WO1994011471A1 - A process for converting waste motor oil to diesel fuel - Google Patents
A process for converting waste motor oil to diesel fuel Download PDFInfo
- Publication number
- WO1994011471A1 WO1994011471A1 PCT/US1993/011082 US9311082W WO9411471A1 WO 1994011471 A1 WO1994011471 A1 WO 1994011471A1 US 9311082 W US9311082 W US 9311082W WO 9411471 A1 WO9411471 A1 WO 9411471A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cracking
- motor oil
- diesel fuel
- oil
- mixture
- Prior art date
Links
- 239000010705 motor oil Substances 0.000 title claims abstract description 30
- 239000002283 diesel fuel Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002699 waste material Substances 0.000 title description 13
- 238000005336 cracking Methods 0.000 claims abstract description 36
- 239000002923 metal particle Substances 0.000 claims abstract description 8
- 238000004821 distillation Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000010913 used oil Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 17
- 150000001336 alkenes Chemical class 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 150000003464 sulfur compounds Chemical class 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005112 continuous flow technique Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- -1 greases Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010747 number 6 fuel oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005120 petroleum cracking Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/02—Working-up used lubricants to recover useful products ; Cleaning mineral-oil based
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/04—Diesel oil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- This invention is directed towards the art of converting used motor oil to a useable fuel source.
- Currently, the market for used motor oil has stymied many recycling and reclamation efforts.
- the market for used motor oil has largely been geared to limited processing steps which convert the used motor oil into a low quality fuel such as bunker oil (#6 fuel oil) .
- a limited amount of used motor oil is reclaimed and converted into a recycled motor oil product.
- Used motor oil retains a high energy potential.
- hazards and cost associated with collecting, storing, transporting, and general handling of used motor oil has limited the efforts to collect used motor oil for disposal or recycling.
- the prior art provides limited processing of used motor oil for other petroleum products, there remains a need for improvement within the art of converting used motor oil to a high quality energy source.
- a process including providing a cracking apparatus, the apparatus comprising a cracking vessel, the vessel in communication with a heating means for heating the used oil, a distillation column in communication with the vessel, and a condenser in communication with the distillation column; supplying the cracking vessel with a source of used motor oil; heating the used motor oil to a cracking temperature; cracking the used motor oil to a mixture of lighter molecular weight compounds; separating the lighter molecular weight compounds into a first mixture of a small fraction of volatile light ends and a second mixture of diesel fuel; collecting the second mixture of diesel fuel.
- Figure 1 is a flow chart of the process of converting used motor oil into diesel fuel.
- Figure 2 is a graph of distillation curves of used motor oil.
- waste oil from internal combustion engines can be cracked under low temperature, low severity conditions to yield a number two grade diesel fuel. This process occurs at much lower temperatures than conventionally held to be possible and permits the continuous flow processing of waste oil to a number two grade diesel fuel without coking or fouling of the cracking apparatus.
- waste oil collected from gas and diesel internal combustion engines is fed into a cracking unit which also serves as a reboiler. While a variety of designs can be employed, the cracking unit/reboiler presently employed is a direct fired unit which burns diesel fuel and air as the heating means for boiler tubes located within the cracking vessel.
- Heat from the boiler tubes is used to convectively heat waste oil via heat exchange with the boiler tubes.
- Attached to the cracking/reboiler unit is an overhead distillation column which may be either a packed column or a plate column, both of which are well known in the art of refining petroleum.
- the distillation column enables the collection of vaporized lighter molecular weight compounds from the top of the column.
- the vaporized fraction from the top of the column can be collected in an adjacent condenser.
- a portion of the condensed vapors are returned to the distillation column and provide reflux for the distillation system.
- the reflux permits the return of material which is heavier than diesel fuel to the cracking vessel for cracking into lighter materials.
- the amount of the reflux can be varied according to the type of equipment used, the quality of the initial column separation and variations in the feed stock starting material.
- the starting hydrocarbon material used motor oil, is characterized by a mixture of parafins, napthenes, aromatics, and olefins.
- a comparison of an ASTM D-86 distillation curve of a typical waste oil feed stock is provided in conjunction with an ASTM D-1160 distillation curve of the same feed stock run under low pressure and at temperatures too low for cracking to occur.
- the D-1160 curve has been corrected as described in ASTM D-1160-87 to normal atmospheric pressure and at the indicated temperatures.
- a comparison of the two curves indicates that above thirty percent distilled, cracking becomes vigorous between 60 and
- the condensed primary product from the cracking process is characterized by a mixture of light ends, paraffins, napthenes, olefins, and aromatics.
- These light ends can be vaporized with an electric band heater prior to being collected in the condenser, or, alternatively, the primary product can be reheated and passed through a flash pot or a vapor separator where the more volatile light ends are separated and collected. These separated light ends can then be condensed and used to fuel the heat source for the cracking unit.
- the removal of the light ends described above yields a diesel fuel product which will meet federal specifications for number two diesel fuel. As indicated in table 1, the diesel product has a sufficiently high flash point, cetane rating, and distillation profile to meet federal standards for #2 diesel fuel.
- Sample A of Table #1 is a composite of the diesel product collected over a several hour-long run on September 23, 1992.
- the feed stock of waste oil was collected from a service station in the vicinity of Washington, South Carolina.
- Sample B is a product sample collected from a run on September 26, 1992. It is from the same feed stock as described in sample A.
- Sample C is a product sample from a run conducted
- Sample D is a composite sample of the test run as described in sample C and combined with an additional separate run conducted on September 27, 1992.
- Sample E is a composite of five different samples withdrawn over the course of a run conducted on November 7, 1992.
- the feed stock for sample E is a mixture of the feed stock used in sample A combined with a feed stock from a diesel truck fleet which operates in the vicinity of Washington, South Carolina.
- the diesel fuel product can be hydrotreated.
- the hydrotreat ent saturates the double bonds of olefins, thereby preventing the discoloration of the product.
- hydrotreatment has the additional advantage of removing sulfur compounds from the diesel product.
- hydrotreating is not necessary to meet the specifications for number two diesel fuel, hydrotreating will permit a much wider range of feed stock to be used in the process.
- Highly uniform feed stock sources such as those from an oil recovery system for fleet vehicles, is ideal for processing.
- Specialty lube shops and service stations represent a feed stock source of extreme variation in oil types in terms of viscosity, gas/diesel ratings, anti-oxidant content, detergent additives and the presence of synthetic oils.
- community collection sites for used oil often contained other petroleum products such as greases, gear oils and other types of lubricating oils.
- Some of these heavier, more diverse feed stocks will include sulfur compounds which are added to prevent metal to metal contact.
- metal particles which are present in the waste oil.
- Metal particles and shavings from engine wear are suspended in the waste oil. These particles are typically in the micron and submicron range and represent particles sufficiently small such that they pass through standard oil filters. These metal shavings are believed to promote the efficiency of the cracking process in several ways. The large number of the metal particles vastly increases the surface area of metal to hydrocarbon contact within the cracking vessel. Further, the metal particles are thought to operate as a catalyst for the cracking process.
- Coke formation a common problem in petroleum cracking, is not occurring on the cracking equipment used in the present process. While coke formation is a poorly understood phenomena, it is believed that the low temperatures employed to crack the waste oil are sufficiently mild such that coking is avoided. It may also be that any coke formation which may be occurring, is being selectively deposited upon the suspended metal particles. If so, then the metal/coke particles are removed as part of a continuous slurry withdrawal process. This slurry can be used directly as a bunker fuel oil source. Alternatively, the slurry sediments, namely metal ash and high molecular weight hydrocarbons, can be further condensed with the liquid portions being returned to the feed stock for reentry into the cracking process. The process permits the operator to choose between these two approaches.
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Used motor oil is cracked under the cracking temperature ranging from 520 to 650 °F, with the cracking process promoted by the presence of suspended metal particles generated by engine wear, to produce a diesel fuel which may subsequently be subjected to hydrotreatment.
Description
A PROCESS FOR CONVERTING
WASTE MOTOR OIL TO DIESEL FUEL BACKGROUND OF THE INVENTION
This invention is directed towards the art of converting used motor oil to a useable fuel source. Currently, the market for used motor oil has stymied many recycling and reclamation efforts. The market for used motor oil has largely been geared to limited processing steps which convert the used motor oil into a low quality fuel such as bunker oil (#6 fuel oil) . Alternatively, a limited amount of used motor oil is reclaimed and converted into a recycled motor oil product.
Used motor oil retains a high energy potential. However, hazards and cost associated with collecting, storing, transporting, and general handling of used motor oil has limited the efforts to collect used motor oil for disposal or recycling. Although the prior art provides limited processing of used motor oil for other petroleum products, there remains a need for improvement within the art of converting used motor oil to a high quality energy source. SUMMARY OF THE INVENTION
It is thus an object of this invention to provide a process for converting used motor oil into a diesel fuel product.
It is a further object of this invention to provide an apparatus and process for the low temperature, ambient pressure cracking of used motor oil into a diesel product.
It is yet another object of this invention to provide for mobile processing for the conversion of used motor oil to a diesel fuel product. These, as well as other objects of this invention, are provided by a process including providing a cracking apparatus, the apparatus comprising a cracking vessel, the vessel in
communication with a heating means for heating the used oil, a distillation column in communication with the vessel, and a condenser in communication with the distillation column; supplying the cracking vessel with a source of used motor oil; heating the used motor oil to a cracking temperature; cracking the used motor oil to a mixture of lighter molecular weight compounds; separating the lighter molecular weight compounds into a first mixture of a small fraction of volatile light ends and a second mixture of diesel fuel; collecting the second mixture of diesel fuel.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart of the process of converting used motor oil into diesel fuel.
Figure 2 is a graph of distillation curves of used motor oil.
DETAILED DESCRIPTION In accordance with this invention, it has been found that waste oil from internal combustion engines can be cracked under low temperature, low severity conditions to yield a number two grade diesel fuel. This process occurs at much lower temperatures than conventionally held to be possible and permits the continuous flow processing of waste oil to a number two grade diesel fuel without coking or fouling of the cracking apparatus. As best seen in reference to figure 1, waste oil collected from gas and diesel internal combustion engines is fed into a cracking unit which also serves as a reboiler. While a variety of designs can be employed, the cracking unit/reboiler presently employed is a direct fired unit which burns diesel fuel and air as the heating means for boiler tubes located within the cracking vessel. Heat from the boiler tubes is used to convectively heat waste oil via heat exchange with the boiler tubes.
Attached to the cracking/reboiler unit is an overhead distillation column which may be either a packed column or a plate column, both of which are well known in the art of refining petroleum. The distillation column enables the collection of vaporized lighter molecular weight compounds from the top of the column. The vaporized fraction from the top of the column can be collected in an adjacent condenser. A portion of the condensed vapors are returned to the distillation column and provide reflux for the distillation system. The reflux permits the return of material which is heavier than diesel fuel to the cracking vessel for cracking into lighter materials. The amount of the reflux can be varied according to the type of equipment used, the quality of the initial column separation and variations in the feed stock starting material.
The starting hydrocarbon material, used motor oil, is characterized by a mixture of parafins, napthenes, aromatics, and olefins. As seen in figure 2, a comparison of an ASTM D-86 distillation curve of a typical waste oil feed stock is provided in conjunction with an ASTM D-1160 distillation curve of the same feed stock run under low pressure and at temperatures too low for cracking to occur. The D-1160 curve has been corrected as described in ASTM D-1160-87 to normal atmospheric pressure and at the indicated temperatures. A comparison of the two curves indicates that above thirty percent distilled, cracking becomes vigorous between 60 and
650°F. The condensation temperature of the distilled material never exceeds the maximum boiling point temperature for #2 two diesel fuel. Therefore, in terms of boiling points, the cracked material meets the specifications for #2 diesel fuel.
Further comparison of the D-86 curve with the D-1160 curve indicates that a low level of cracking activity begins at approximately 520°F. D-86 distillation runs from a variety of
waste oil feed stocks from around the United States indicates that the data in figure 2 is representative of waste oil in general.
The condensed primary product from the cracking process is characterized by a mixture of light ends, paraffins, napthenes, olefins, and aromatics. To ensure a sufficiently high flashpoint, it is desirable to remove some of the light ends from the primary collected product. These light ends can be vaporized with an electric band heater prior to being collected in the condenser, or, alternatively, the primary product can be reheated and passed through a flash pot or a vapor separator where the more volatile light ends are separated and collected. These separated light ends can then be condensed and used to fuel the heat source for the cracking unit. Under steady state operating conditions, the removal of the light ends described above, yields a diesel fuel product which will meet federal specifications for number two diesel fuel. As indicated in table 1, the diesel product has a sufficiently high flash point, cetane rating, and distillation profile to meet federal standards for #2 diesel fuel.
Sample A of Table #1 is a composite of the diesel product collected over a several hour-long run on September 23, 1992. The feed stock of waste oil was collected from a service station in the vicinity of Charleston, South Carolina. Sample B is a product sample collected from a run on September 26, 1992. It is from the same feed stock as described in sample A.
Sample C is a product sample from a run conducted
September 27, 1992, from the feed stock described in sample A. Sample D is a composite sample of the test run as described in sample C and combined with an additional separate run conducted on September 27, 1992.
Sample E is a composite of five different samples withdrawn over the course of a run conducted on November 7, 1992. The feed stock for sample E is a mixture of the feed stock used in sample A combined with a feed stock from a diesel truck fleet which operates in the vicinity of Charleston, South Carolina.
While the data provided in Table #1 indicates the diesel products meets federal standards for #2 diesel fuel, it has proven beneficial to routinely perform additional steps to maintain continuous production of a high quality diesel fuel. Initially, the collected diesel product is of a light tea color which will meet stringent pipe' line color standards. However, the diesel fuel product will often darken over time due to the presence of reactive olefins within the fuel. To prevent the discoloration, well known fuel stabilizers can be added to the product which will stabilize the olefins.
As an alternative, the diesel fuel product can be hydrotreated. The hydrotreat ent saturates the double bonds of olefins, thereby preventing the discoloration of the product. Further, hydrotreatment has the additional advantage of removing sulfur compounds from the diesel product.
While hydrotreating is not necessary to meet the specifications for number two diesel fuel, hydrotreating will permit a much wider range of feed stock to be used in the process. Highly uniform feed stock sources, such as those from an oil recovery system for fleet vehicles, is ideal for processing. However, there is a vast supply of used motor oil which varies as to content and source. Specialty lube shops and service stations represent a feed stock source of extreme variation in oil types in terms of viscosity, gas/diesel ratings, anti-oxidant content, detergent additives and the presence of synthetic oils. Further, community collection
sites for used oil often contained other petroleum products such as greases, gear oils and other types of lubricating oils. Some of these heavier, more diverse feed stocks will include sulfur compounds which are added to prevent metal to metal contact. By incorporating a hydro-treatment step in the refining process, a more diverse range of feed stocks can be efficiently processed by removing sulfur compounds as well as reducing the level of reactive olefins.
It is believed that the above low temperature cracking process is facilitated by the presence of metal particles which are present in the waste oil. Metal particles and shavings from engine wear are suspended in the waste oil. These particles are typically in the micron and submicron range and represent particles sufficiently small such that they pass through standard oil filters. These metal shavings are believed to promote the efficiency of the cracking process in several ways. The large number of the metal particles vastly increases the surface area of metal to hydrocarbon contact within the cracking vessel. Further, the metal particles are thought to operate as a catalyst for the cracking process.
While it is difficult to analyze the cracking reactions, it is believed that the majority of the cracking is occurring within the interior portions of the hydrocarbon molecule. Only a small percentage of light ends are being produced relative to diesel product. Therefore, it is inferred that cracking under the mild conditions employed is minimized along the end portions of the parent hydrocarbon chains.
Coke formation, a common problem in petroleum cracking, is not occurring on the cracking equipment used in the present process. While coke formation is a poorly understood phenomena, it is believed that the low temperatures employed to crack the waste oil are sufficiently mild such that coking is avoided.
It may also be that any coke formation which may be occurring, is being selectively deposited upon the suspended metal particles. If so, then the metal/coke particles are removed as part of a continuous slurry withdrawal process. This slurry can be used directly as a bunker fuel oil source. Alternatively, the slurry sediments, namely metal ash and high molecular weight hydrocarbons, can be further condensed with the liquid portions being returned to the feed stock for reentry into the cracking process. The process permits the operator to choose between these two approaches.
It is thus seen that the present process provides for a method of converting used motor oil to a diesel fuel product. As many variations and modifications of the above process will be apparent to those having skill in the art from a reading of the above specification, and, therefore, such variation are within the spirit and scope of the following appended claims.
Claims
1. A process for cracking used motor oil to a diesel fuel comprising the following steps: providing a cracking apparatus, said apparatus comprising a cracking vessel, said vessel in communication with a heating means for heating said used oil; a distillation column in communication with said vessel; a condenser in communication with said distillation column; supplying said cracking vessel with a source of used motor oil, said motor oil carrying a suspension of metal particles, said metal particles generated from the wear of an internal combustion engine; heating said used motor oil to a cracking temperature; cracking said used motor oil to a mixture of lighter molecular weight compounds; separating said lighter molecular weight compounds into a first mixture of volatile light ends and a second mixture of diesel fuel; collecting said second mixture of diesel fuel.
2. The process according to claim 1, wherein said second mixture is hydrotreated.
3. The process according to claim 1, including the additional step of continuously removing a slurry of material from said cracking vessel.
4. The process according to claim 1, wherein said temperature is in excess of 520° F.
5. The process according to claim 1 wherein said temperature is between 600° and 650° F.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU56075/94A AU5607594A (en) | 1992-11-17 | 1993-11-16 | A process for converting waste motor oil to diesel fuel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US97762792A | 1992-11-17 | 1992-11-17 | |
US07/977,627 | 1992-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994011471A1 true WO1994011471A1 (en) | 1994-05-26 |
Family
ID=25525340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1993/011082 WO1994011471A1 (en) | 1992-11-17 | 1993-11-16 | A process for converting waste motor oil to diesel fuel |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN1089640A (en) |
AU (1) | AU5607594A (en) |
WO (1) | WO1994011471A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19605887A1 (en) * | 1996-02-19 | 1997-08-21 | Delinic Kresimir Dipl Ing Dr R | Use of waste slag produced in mfr. of ferrous alloys as catalyst |
EP0805195A3 (en) * | 1996-04-29 | 1998-01-07 | Sicogesa Explotacion, S.A. | Used lubricating oil electric power generating process and facility |
EP0826762A1 (en) * | 1996-08-28 | 1998-03-04 | Sung Rae Lee | Apparatus and process for reclaiming fuel oil from waste oil |
EP0900837A1 (en) * | 1997-08-21 | 1999-03-10 | Her Majesty in Right of Canada as represented by the Minister of Natural Resources Canada | Methanol extraction of contaminating substances from thermally cracked waste oils |
US5885444A (en) * | 1992-11-17 | 1999-03-23 | Green Oasis Environmental, Inc. | Process for converting waste motor oil to diesel fuel |
US6440298B1 (en) | 1988-09-20 | 2002-08-27 | Patent Holdings Ltd. | Method of reclaiming waste oil |
CN102226104A (en) * | 2011-05-23 | 2011-10-26 | 大连理工大学 | A method for producing gasoline and diesel from waste lubricating oil |
US8153577B2 (en) | 2009-08-12 | 2012-04-10 | Rhodia Operations | Methods for cleaning recyclable substrates or containers |
WO2013155498A1 (en) * | 2012-04-12 | 2013-10-17 | OTG Research, LLC | Methods and systems for obtaining long chain carbons from petroleum based oil |
US8859833B2 (en) | 2011-04-12 | 2014-10-14 | OTG Research, LLC | Methods and systems for obtaining long chain carbons from petroleum based oil |
CN104893767A (en) * | 2015-05-19 | 2015-09-09 | 李菊明 | A production process of high-quality fuel oil from waste engine oil |
US11591528B2 (en) | 2017-12-13 | 2023-02-28 | Karl Ip Holdings Inc. | Low-pressure catalytic conversion of used motor oil to diesel fuel |
Families Citing this family (1)
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CN107699282B (en) * | 2017-11-07 | 2019-07-05 | 中北大学 | Environmental protection technology of diesel oil regeneration by catalytic cracking waste lubricating oil |
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US3717569A (en) * | 1971-01-22 | 1973-02-20 | Standard Oil Co | Method for increasing a refinery's capacity for processing metals-containing residual-type hydrocarbons |
US4101414A (en) * | 1975-09-02 | 1978-07-18 | Unitech Chemical Inc. | Rerefining of used motor oils |
US4512878A (en) * | 1983-02-16 | 1985-04-23 | Exxon Research And Engineering Co. | Used oil re-refining |
US5248410A (en) * | 1991-11-29 | 1993-09-28 | Texaco Inc. | Delayed coking of used lubricating oil |
-
1993
- 1993-11-16 AU AU56075/94A patent/AU5607594A/en not_active Abandoned
- 1993-11-16 WO PCT/US1993/011082 patent/WO1994011471A1/en active Application Filing
- 1993-11-17 CN CN93121438A patent/CN1089640A/en active Pending
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US4512878A (en) * | 1983-02-16 | 1985-04-23 | Exxon Research And Engineering Co. | Used oil re-refining |
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Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
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US6440298B1 (en) | 1988-09-20 | 2002-08-27 | Patent Holdings Ltd. | Method of reclaiming waste oil |
US5885444A (en) * | 1992-11-17 | 1999-03-23 | Green Oasis Environmental, Inc. | Process for converting waste motor oil to diesel fuel |
DE19605887A1 (en) * | 1996-02-19 | 1997-08-21 | Delinic Kresimir Dipl Ing Dr R | Use of waste slag produced in mfr. of ferrous alloys as catalyst |
EP0805195A3 (en) * | 1996-04-29 | 1998-01-07 | Sicogesa Explotacion, S.A. | Used lubricating oil electric power generating process and facility |
ES2117942A1 (en) * | 1996-04-29 | 1998-08-16 | Sicogesa Explotacion S A | Used lubricating oil electric power generating process and facility |
EP0826762A1 (en) * | 1996-08-28 | 1998-03-04 | Sung Rae Lee | Apparatus and process for reclaiming fuel oil from waste oil |
WO1998008923A1 (en) * | 1996-08-28 | 1998-03-05 | Arrison Norman L | Apparatus and process for reclaiming fuel oil from waste oil |
AU691131B2 (en) * | 1996-08-28 | 1998-05-07 | Norman L Arrison | Apparatus and process for reclaiming fuel oil waste from waste oil |
CN1083875C (en) * | 1996-08-28 | 2002-05-01 | 李性来 | Apparatus and method for regenerating fuel oil from waste oil |
EP0940463A3 (en) * | 1997-03-03 | 2003-01-02 | Green Oasis Environmental Inc. | A process for converting waste motor oil to diesel fuel |
EP0900837A1 (en) * | 1997-08-21 | 1999-03-10 | Her Majesty in Right of Canada as represented by the Minister of Natural Resources Canada | Methanol extraction of contaminating substances from thermally cracked waste oils |
US8153577B2 (en) | 2009-08-12 | 2012-04-10 | Rhodia Operations | Methods for cleaning recyclable substrates or containers |
US8859833B2 (en) | 2011-04-12 | 2014-10-14 | OTG Research, LLC | Methods and systems for obtaining long chain carbons from petroleum based oil |
US9006504B2 (en) | 2011-04-12 | 2015-04-14 | OTG Research, LLC | Methods for converting motor oil into fuel |
US9499754B2 (en) | 2011-04-12 | 2016-11-22 | OTG Research, LLC | Methods for converting motor oil into fuel |
US9518234B2 (en) | 2011-04-12 | 2016-12-13 | OTG Research, LLC | Methods and systems for converting petroleum based oil into fuel |
CN102226104A (en) * | 2011-05-23 | 2011-10-26 | 大连理工大学 | A method for producing gasoline and diesel from waste lubricating oil |
WO2013155498A1 (en) * | 2012-04-12 | 2013-10-17 | OTG Research, LLC | Methods and systems for obtaining long chain carbons from petroleum based oil |
CN104893767A (en) * | 2015-05-19 | 2015-09-09 | 李菊明 | A production process of high-quality fuel oil from waste engine oil |
CN104893767B (en) * | 2015-05-19 | 2016-08-17 | 李菊明 | A kind of production technology of used oil processing high-quality fuel oil |
US11591528B2 (en) | 2017-12-13 | 2023-02-28 | Karl Ip Holdings Inc. | Low-pressure catalytic conversion of used motor oil to diesel fuel |
Also Published As
Publication number | Publication date |
---|---|
CN1089640A (en) | 1994-07-20 |
AU5607594A (en) | 1994-06-08 |
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