WO2019096019A1

WO2019096019A1 - Industrial continuous oily sludge thermal decomposition equipment

Info

Publication number: WO2019096019A1
Application number: PCT/CN2018/113920
Authority: WO
Inventors: 蒲文忠; 陈明晟; 蒲曼
Original assignee: 绵阳油普能源科技有限责任公司
Priority date: 2017-11-20
Filing date: 2018-11-05
Publication date: 2019-05-23
Also published as: CN109810718A

Abstract

Provided is an industrial continuous oily sludge thermal decomposition equipment, belonging to the field of oily sludge treatment. The industrial continuous oily sludge thermal decomposition equipment comprises a cracking furnace and a heating chamber, wherein the heating chamber is arranged outside the cracking furnace, and the cracking furnace interior comprises a full high temperature region or a low temperature region-high temperature region. The cracking furnace is provided with a conveyor chain belt, and the conveyor chain belt can be multi-layered and staggered. The end of the conveyor chain belt is a discharge port, the discharge port is connected to one end of a rotary sealing joint, and the other end of the rotary sealing joint is connected with a cooling cylinder. In the equipment, the conveyor chain belt is staggered in the vertical direction, which increases the residence time of the oily sludge in the cracking furnace, so that the pyrolysis is more sufficient. Meanwhile the length and size of the equipment is shortened, which saves equipment investment. An AC variable frequency stepless speed regulating motor is used to adjust the speed of the conveyor chain belt, so that the pyrolysis rate and residence time can be effectively controlled, and the particle size and dryness of tailings can be precisely controlled.

Description

Industrial continuous sewage sludge thermal decomposition equipment

Technical field

The invention relates to the field of thermal decomposition treatment of organic substances such as oil sludge, oil sand, heavy oil pyrolysis and domestic garbage pyrolysis, and particularly relates to a sewage sludge continuous pyrolysis device.

Background technique

Oily sludge is a concomitant product of petrochemical production, and its treatment is mainly incineration and landfill. However, these two treatment methods cannot achieve the required harmless treatment. Dioxins are easily produced during incineration with sludge, and dioxin is a carcinogenic gas substance that affects the atmosphere and causes secondary pollution. At the same time, these two traditional treatment methods are costly. The oily sludge pyrolysis technology is an effective method to solve the oil content in oily sludge. After the temperature is raised, the water first evaporates, and then the temperature is raised, the light oil is volatilized, and the heavy oil is cracked into small molecules, and the light oil is volatilized and collected, and then the moisture and oil in the sludge are removed, and the obtained dry matter can be obtained. Direct discharge or reprocessing to avoid secondary pollution. The existing equipment for pyrolysis of oily sludge is mainly heated by rotation and has high energy consumption; the equipment covers a large area and the manufacturing cost is high; the particle size of the tailings discharge cannot be well controlled, and sludge coking occurs during the treatment process. To make the pyrolysis insufficient and the equipment cleaned up.

Summary of the invention

In order to solve the above problems, the present invention proposes a sewage sludge continuous pyrolysis device, which saves the rotary energy consumption of the pyrolysis furnace through multi-layer belt conveyance, reduces the equipment volume, reduces the equipment cost, and precisely controls the tailings particle size and drying. Degree, reduce secondary pollution.

In order to achieve the above object, the present invention is achieved by the following technical solutions:

An industrial continuous sewage sludge thermal decomposition device, comprising a pyrolysis furnace and a heating chamber, wherein the heating chamber is disposed on one side or several sides of the outside of the pyrolysis furnace, and a feed inlet is arranged at a front portion of the pyrolysis furnace, The pyrolysis furnace includes a full high temperature zone or a low temperature zone-high temperature zone; the pyrolysis furnace is provided with a conveyor chain belt, the end of the conveyor chain belt is a discharge port, and the discharge port is connected with a sealing device;

a conveyor chain belt is disposed in the full high temperature region, the conveyor chain belt includes at least two layers, and the transmission chain belts between the layers are staggered in a vertical direction;

The low temperature zone-high temperature zone includes a low temperature zone and a high temperature zone, the low temperature zone is adjacent to the feed port, and a transfer chain belt is disposed between the low temperature zone and the high temperature zone, and the low temperature zone and the high temperature zone are disposed between the low temperature zone and the high temperature zone. There is a heat insulation board, the conveying chain belt of the low temperature zone comprises a feeding end and a discharging end; the conveying end belt of the feeding end and the discharging end are at least one layer, and the feeding end and the discharging end of each layer The end conveyor belts are staggered in a vertical direction; the conveyor belts in the high temperature zone are at least two layers, and the conveyor chains in the high temperature zone are staggered in a vertical direction in a high temperature zone;

A burner for heating the furnace body of the cracking furnace is provided in the heating chamber, and the burner is connected to the fuel input device.

Further, the pyrolysis furnace is a cracking furnace, the sealing device comprises a rotary sealing joint, the discharge port is connected to one end of the rotary sealing joint, and the other end of the rotary sealing joint is connected with a cooling cylinder.

Further, the feed port includes a solid feed port, a semi-fluid, and a fluid feed port.

Further, the top of the cracking furnace is provided with an oil and gas outlet and a dust removing device. The oil and gas are mainly light oil and water vapor. After the oil and gas are discharged, the water and oil are separated by condensation, and the obtained oil can be reused. The dust removal device is mainly a wet dust removal device, which reduces the dust in the cracking furnace.

Further, the furnace body of the cracking furnace is any one of a rectangular shape, a circular shape and a tubular shape. However, it is not limited to these types, and the shape of the furnace body can be selected and designed according to specific conditions.

Further, a scraper is disposed at the bottom of the cracking furnace. The scraper is mainly used to scrape the residual material on the conveyor chain to strengthen the operation of the equipment.

Further, the low temperature zone-high temperature zone includes a low temperature zone and a high temperature zone; and the burner is disposed in the heating chamber of the full high temperature zone or the high temperature zone.

Further, the control device and the transmission power device are electrically connected, and the control device is electrically connected to the transmission power device; the transmission power device is connected to the transmission chain.

Further, a solid conveyor belt for conveying solids is connected to the front end of the solid feed port.

Further, a fluid and a semi-fluid transfer pump for transporting a semi-fluid or a fluid is connected to the front end of the semi-fluid and fluid feed port.

Further, the transmission power device comprises a motor, a speed reducer, a driving wheel and a tensioning wheel, wherein the speed reducer is respectively connected with the driving wheel and the motor; the motor is an AC variable frequency stepless speed regulating motor; the tensioning wheel is set On the drive wheel, the conveyor chain is disposed between the drive wheel and the tensioning wheel.

The industrial continuous chemical sludge thermal decomposition equipment of the invention has the beneficial effects of:

(1) The solid or semi-dry solids are transported and cracked by a conveyor chain inside the pyrolysis furnace, thereby avoiding an increase in energy consumption due to the rotation of the furnace body. Conveying the chain with a conveyor belt is more energy efficient.

(2) The conveyor chains in the pyrolysis furnace are staggered in the vertical direction, which increases the residence time of the oily sludge in the cracking furnace, so that the pyrolysis is more sufficient;

(3) The conveyor chains in the pyrolysis furnace are staggered in the vertical direction, which shortens the length of the equipment, reduces the size of the equipment, and saves equipment investment.

(4) The AC variable frequency stepless speed regulating motor is used to adjust the speed of the conveyor chain, effectively control the pyrolysis rate and residence time, and accurately control the particle size and dryness of the tailings.

(5) In the pyrolysis furnace with low temperature zone-high temperature zone, the high temperature zone is provided with a burner, while in the low temperature zone, the burner is not provided, and the material in the high temperature zone directly enters the low temperature zone, because the low temperature zone and the feed port phase Adjacent, the waste heat from the high temperature zone can heat the raw materials in the low temperature zone after the feed port, making full use of heat energy. It can reduce the setting of the burner while saving energy. The pyrolysis contains sludge, and the hydrocarbons in the sludge are collected in the meteorological environment without causing air pollution, recycling, and environmental protection.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic view showing the structure of a pyrolysis furnace in a high temperature zone in the present invention;

2 is a schematic view showing the structure of the pyrolysis furnace in the low temperature zone-high temperature zone and the low temperature zone in the present invention;

3 is a schematic view showing the structure of the pyrolysis furnace in the low temperature zone-high temperature zone and the low temperature zone in the present invention;

1-cracking furnace, 2-heating bin, 3-transport chain, 4-full high temperature zone, 5-low temperature zone, 6-high temperature zone, 7-discharge port, 8-rotation sealing joint, 9-cooling cylinder, 10 - burner, 11-solid feed port, 12-semifluid and fluid feed port, 13-oil and gas outlet, 14-solid conveyor, 15-fluid and semi-fluid transfer pump, 16-scraper, 17-dust removal device, 18-insulation board.

Detailed ways

The present invention will be further described in detail below in conjunction with the specific embodiments and the accompanying drawings.

Example 1

An industrial continuous sewage sludge thermal decomposition device is shown in Fig. 1, comprising a pyrolysis furnace 1 and a heating chamber 2, and the heating chamber can be disposed on either side of the pyrolysis furnace, or on both sides, or three according to requirements. On the side or the four sides, in the embodiment 1 of the present invention, the pyrolysis furnace may preferably be the cracking furnace 1. The heating chamber 2 in this embodiment is disposed on the lower side of the cracking furnace 1, and the front end of the cracking furnace 1 is provided with a feeding port, and the feeding port includes a solid feeding port 11, a semi-fluid and a fluid inlet port 12, when the raw material is In the case of a solid, it can be directly transported by a solid conveying device. In the specific embodiment 1, the solid conveying belt 14 is preferably used for direct conveying; when the raw material is semi-fluid or fluid, the fluid and semi-fluid conveying pump 15 can be used for the raw material. Carrying in the feed. The inside of the cracking furnace 1 includes a full-temperature zone 4; the cracking furnace 1 is provided with a conveyor chain 3, the end of the conveyor chain 3 is a discharge port 7, and the discharge port 7 is connected with a sealing device. In the specific embodiment 1, The sealing device preferably comprises a rotary sealing joint 8, ie the discharge opening 7 can preferably be connected to one end of the rotary sealing joint 8, the other end of the rotary sealing joint 8 is connected to the cooling cylinder 9; in the full high temperature zone 4 there is a conveyor chain 3, which is conveyed The chain belt 3 comprises at least two layers, and the conveyor chain belts 3 between each layer are staggered in a vertical direction; the heating chamber 2 is provided with a burner 10 for heating the furnace body of the cracking furnace 1, the burner 10 and the gas Input device connection. The fuel may include gas, coal gas, natural gas, fuel oil, etc., and the burners 10 are adapted to each other depending on the fuel. The furnace body of the cracking furnace 1 is any one of a rectangular shape, a circular shape and a tubular shape, but is not limited to these types, and the shape of the furnace body can be selected and designed according to specific actual conditions. The top of the cracking furnace 1 is provided with an oil and gas outlet 13 and a dust removing device 17. The oil and gas contain water vapor, and the oil and gas after the separation is separated and collected by condensation, and the obtained oil can be reused. The bottom of the cracking furnace 1 is provided with a scraper 16 which is mainly disposed near the discharge port 7 to facilitate scraping of the tailings on the drive chain belt at the discharge port 7, thereby ensuring smooth operation of the equipment.

The control of the transmission chain belt mainly adopts a control device and a transmission power device, and the control device is electrically connected with the transmission power device; the transmission power device comprises an AC variable frequency stepless speed regulation motor, a speed reducer, a driving wheel and a tensioning wheel, and a speed reducer. The driving wheel and the motor are respectively connected; the tensioning wheel is disposed on the driving wheel, the transmission chain belt 3 is disposed between the driving wheel and the tensioning wheel, the driving wheel rotates, and the transmission chain belt is driven to move by friction. The control device can directly control the frequency of the AC variable frequency stepless speed regulating motor, and then control the speed of the speed reducer and the driving wheel to control the running speed of the raw material in the cracking furnace 1 and ensure the granularity and dryness of the tailings.

Example 2

An industrial continuous sewage sludge thermal decomposition device is shown in Fig. 2 and Fig. 3, and comprises a pyrolysis furnace 1 and a heating chamber 2, and the heating chamber can be disposed on either side or both sides of the outside of the pyrolysis furnace according to requirements. Or, on the three sides, or on the four sides, in the second embodiment of the present invention, the pyrolysis furnace may preferably be the cracking furnace 1. The heating chamber 2 in this embodiment is disposed on the lower side of the cracking furnace 1, and the front end of the cracking furnace 1 is provided with a feeding port, and the feeding port includes a solid feeding port 11, a semi-fluid and a fluid inlet port 12, when the raw material is When solid, it can be directly transported through the solid conveyor belt 14; when the raw material is semi-fluid or fluid, the raw material can be fed and fed by the fluid and semi-fluid transfer pump 15 at this time. The inside of the cracking furnace 1 includes a low temperature zone-high temperature zone; the cracking furnace 1 is provided with a conveyor chain belt 3, the end of the conveyor chain belt 3 is a discharge port 7, and the discharge port 7 is connected with a sealing device, in the second embodiment of the present invention The sealing device preferably comprises a rotary sealing joint 8, that is, the discharge opening 7 can preferably be connected to one end of the rotary sealing joint 8, and the other end of the rotary sealing joint 8 is connected with the cooling cylinder 9; the low temperature zone-high temperature zone includes the low temperature zone 5 and the high temperature zone 6, wherein the low temperature zone 5 is adjacent to the feed port, the transfer chain zone 3 is provided between the low temperature zone and the high temperature zone, the heat insulation board 18 is arranged between the low temperature zone 5 and the high temperature zone 6, and the conveyor chain zone of the low temperature zone 5 is provided. 3 comprising a feed end and a discharge end; the transfer chain 3 of the feed end and the discharge end are each at least one layer, and the transfer chain strips 3 at the feed end and the discharge end of each layer are staggered in a vertical direction; The conveyor belt 3 of the high temperature zone 6 is at least two layers, and the conveyor chain belts 3 of the high temperature zone 6 are staggered in the vertical direction in the high temperature zone 6; the heating compartment 2 is provided with a heating for heating the furnace body of the cracking furnace 1. The nozzle 10 is mainly disposed below the high temperature zone 6, and the burner 10 is connected to the gas input device. The fuel may include gas, coal gas, natural gas, fuel oil, etc., and the burners 10 are adapted to each other depending on the fuel. The furnace body of the cracking furnace 1 is any one of a rectangular shape, a circular shape and a tubular shape, but is not limited to these types, and the shape of the furnace body can be selected and designed according to specific actual conditions. The top of the cracking furnace 1 is provided with an oil and gas outlet 13 and a dust removing device 17. The oil and gas contain water vapor, and the oil and gas after the separation is separated and collected by condensation, and the obtained oil can be reused. The bottom of the cracking furnace 1 is provided with a scraper 16 which is mainly disposed near the discharge port 7 to facilitate scraping of the tailings on the drive chain belt at the discharge port 7, thereby ensuring smooth operation of the equipment.

The control of the transmission chain belt mainly adopts a control device and a transmission power device, and the control device is electrically connected with the transmission power device; the transmission power device comprises an AC variable frequency stepless speed regulating motor, a speed reducer, a driving wheel and a tensioning wheel, The reducer is respectively connected with the driving wheel and the motor; the tensioning wheel is disposed on the driving wheel, the transmission chain belt 3 is disposed between the driving wheel and the tensioning wheel, the driving wheel rotates, and the transmission chain belt is driven by friction . The control device can directly control the frequency of the AC variable frequency stepless speed regulating motor, and then control the speed of the speed reducer and the driving wheel to control the running speed of the raw material in the cracking furnace 1 and ensure the granularity and dryness of the tailings.

The technical solutions provided by the embodiments of the present invention are described in detail above. The principles and implementation manners of the embodiments of the present invention are described in the following. The description of the foregoing embodiments is only applicable to help understand the embodiments of the present invention. The present invention is not limited by the scope of the present invention, and the description of the present invention is not limited to the details of the present invention.

Claims

An industrial continuous sewage sludge thermal decomposition device, comprising: a pyrolysis furnace and a heating chamber, wherein the heating chamber is disposed on either side or sides of the pyrolysis furnace, and the front portion of the pyrolysis furnace is provided a feed port, the pyrolysis furnace includes a full high temperature zone or a low temperature zone-high temperature zone; the pyrolysis furnace is provided with a conveyor chain belt, and the end of the conveyor chain belt is a discharge port, and the discharge port Connecting the sealing device;

a conveyor chain belt is disposed in the full high temperature region, the conveyor chain belt includes at least two layers, and the transmission chain belts between the layers are staggered in a vertical direction;

The low temperature zone-high temperature zone includes a low temperature zone and a high temperature zone, the low temperature zone is adjacent to the feed port, and a transfer chain belt is disposed between the low temperature zone and the high temperature zone, and between the low temperature zone and the high temperature zone Provided with a heat insulation panel, the conveyor belt of the low temperature zone comprises a feed end and a discharge end; the conveyor chain of the feed end and the discharge end are at least one layer, and the feed end and the outlet of each layer The conveyor chain belts of the material end are staggered in a vertical direction; the conveyor chain belts in the high temperature zone are at least two layers, and the conveyor chain belts in the high temperature zone are staggered in a vertical direction in a high temperature zone;

A burner for heating the furnace body of the pyrolysis furnace is provided in the heating chamber, and the burner is connected to the fuel input device.
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 1, wherein the pyrolysis furnace is a cracking furnace, the sealing device comprises a rotary sealing joint, and the discharge port is connected to the rotary sealing joint. One end; the other end of the rotary sealing joint is connected with a cooling cylinder.
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 2, wherein the feed port comprises a solid feed port, a semi-fluid, and a fluid feed port.
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 2, characterized in that the top of the cracking furnace is provided with an oil and gas outlet and a dust removing device.
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 2, wherein the furnace body of the cracking furnace is any one of a rectangular shape, a circular shape and a tubular shape.
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 2, wherein the burner is disposed in the heating chamber of the high temperature zone or the high temperature zone.
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 2, comprising: a control device and a transmission power device, wherein said control device is electrically connected to said transmission power device; said transmission power device is connected to a transmission chain .
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 3, wherein a solid conveying means for conveying solids is connected to the front end of said solid feed port.
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 3, characterized in that the front end of the semi-fluid and fluid feed port is connected with a fluid for transporting a semi-fluid or a fluid and a semi-fluid transfer pump.
The industrial continuous sewage sludge thermal decomposition apparatus according to claim 7, wherein the transmission power unit comprises a motor, a speed reducer, a driving wheel and a tensioning wheel, and the speed reducer is respectively connected to the driving wheel and the motor; The motor is an AC variable frequency stepless speed regulating motor; the tensioning wheel is disposed on the driving wheel, and the transmission chain belt is disposed between the driving wheel and the tensioning wheel.