WO2005065006A2

WO2005065006A2 - Enhanced oil recovery from waste plastics reacror

Info

Publication number: WO2005065006A2
Application number: PCT/IB2004/000306
Authority: WO
Inventors: Myung Ma
Original assignee: Myung Ma
Priority date: 2003-12-23
Filing date: 2004-02-06
Publication date: 2005-07-21

Abstract

This invention is a reactor with the ‘FIR’ heater therein that converts waste plastics into oil and the process associated with our invention. The ‘FIR’ heater consists of electrical resistance space, far infrared radiator, insulator, protective shell, tight set and other parts. The far infrared ray radiator can be made into various shapes; rod-shape, band-shape and other shapes, and on the outside is encased by metal pipe, and painted with the far infrared radiator. So the far infrared ray can directly heat the plastics thereby turning the waste plastics into recoverable oil. This technique of splitting oil dregs and emulsification will scatter the oil dregs into atoms below 100μ m, and combine them in the emulsified oil equitably, and get 30-60 °C liquid oil in the emulsification container. Hot oil will be directly changed into burnable liquid oil and it can be stored safely at normal temperatures.

Description

Description ENHANCEDOILRECOVERYFROMWASTEPLASTICS REACTOR

[l] 1 , - Field of the invention - : This invention relates to a reactor with the "FIR* heater therein that converts waste plastics into oil and the process associated with our invention. - 2. - Description of the related art - : Conventional reactors for converting waste plastics into oil, for example, Ihese reactors reported in US5947721, US5951826 and USS584969, all use high temperature flue gas to supply the heat required to decompose the plastics into oil. But those reactors involve some disadvantages. First, their heating efficiency is not high. The high temperature flue gas transfers the heat to the outer surface of the reactor, and then the outer surface conducts the heat to the plastics in the reactor. Because the heat is not directly transferred to the plastics, the heating efficiency is lower. The decomposition of oil usually applies die hot-splitting technique and it is important to cure heavy oil to light oil_,, increasing the efficiency of the light oil. The hot-splitting method is one of the waste plastic and waste oil reclamation methods. It is an economical and environmentally sound process, Jt is one of the main techniques used for waste plastic and waste oil reclamation. As wc all know, because the heat-cond netting coefficient of the plastic is low, it is difficult to conduct the heat into it from the heat source. But the plastics, for example, PP (polypropylene), PE (polyethylene) and PS (polystyrene), absorb the far infrared ray easily, especially in the band of wavelength between 2.5 and 25 microns where the absorption is the strongest. When the wavelength of the infrared ray is in this range, it is calle ' far inftared ra ' . So when the waste plastics are heated by far infrared ray, the heating rate and heating efficiency will be increased. The PP, PE, PNC, PS, PET and other plastics have their own special absorbing wavelength band. Various metal oxidants, nitride, carbide and boride, which are called far inftared radiator, emit the far infrared ray of different wavelengths when heated, and the wavelength is different at different temperatures to similar material. Therefore, in order to get a high heating efficiency the wavelength of the far infrared ray should be focused within this range by selecting the appropriate far infrared ray radiator and working temperature. The ' FIR ' heater consists of electrical resistance space, far infrared radiator, insulator, protective shell, tight set and αtiier parts. The protection well always consists of an isolation device that is made of metal, for example, iron and stainless. The isolation device, which separates the heater from the stream in the reactor, must be able to endure die high temperature;, high pressure and corrosion, In order to enhance the emitting of the far inftared ray, a layer of the far infrared radiator covers the outer surface of the far infrared ray heater. To implement this thought, the far infrared ray radiator can be made into various shapes, for example, rod-shape, band-shape and other shapes, and then on the outside is encased by metal pipe, and finally painted with the far infrared radiator. So the far infrared ray can directly heat the plastics, When decomposed, the plastics will be tmracd into some coke. This coke will cover the outer surface of the radiator, thus decreasing the heating efficiency, So an agitator is installed in the reactor. The flowing liquid will make the coke peel off the rods, and the heating efficiency ia not affected or has minimal affect. The agitator may be gate, propeller, combinatorial agitator and other shapes of agitator, According to a closed, system, this will discharge 200~300 ° C oil dregs from splitting equipment safely while hot splitting from heavy oil, waste oil, and waste plastic. According to this technique of splitting oil dregs and emulsification, this will scatter the oil dregs into atoms below 1.00 μ m, and combine them in the emulsified oil, equitably, and get 30~60 ° C liquid oil in the emulsification container. According to this easy method, hot oil will be directly changed into burnable liquid oil and it can be stored safely at normal temperatures. -

Claims

[11 1.A reactor for converting waste plastics into oil using the ' FI ' heater. In this method, the ' FI ' heater, which is installed in the reactor, supplies the heat requited to melt and decompose the waste plastics. 2.TTie reactor as defined in claim 1 can be used to singly melt or decompose the plastics, or simultaneously melt and decompose the plastics. 3,The far infrared ray heater as defined in claim 1 includes the far infrared ray- heating rod, the far infrared ray heating band and other shapes offer inftared ray heater, 4.The waste plastics as defined in claim 1 is all kinds of PP, PE, PS, PET, PVC and other plastics. 5.As defined in claim 1, tiierc is an agitator in the reactor. 6 As defined in claim 5, the agitator may be gate, propeller, combined and other types of agitator. 7.Thc ' FIR ' heater according to claim 1 consists of electrical resistance space, far infrared radiator, insulator, protective shell, tight set and other parts. SAccording to claim 7, from inside to outside be arranged in sequence, installed with the electrical resistance space, insulator (or far infrared radiator), protective shell and far infrared radiator. 9.Thc far infrared radiator according to claim 7 is made of various metal oxidαnts, nitride, carbide and boride. lO.The protective shell according to claim 7 consists of an isolation device that is made of metal, for example, iron and stainless. 11 According to claim 7 a layer of the far infrared radiator covers the outer surface of the far infrared ray heater, 12 According to claim 7 a layer of the far infrared radiator docs not cover the outer surface of d e far inftared ray heater. Claims for the process are; \ .To augment the cooling of the 20O~3O0 ° C waste plastic, wasle oil, and heavy oil hoi-slitting dregs and put them into a closed system and change them to oil to store and deliver and then bum under normal temperatures, 2. Add a certain amount of light oil, water and intcrfacial active impregnate and emulsify the hot-splitting oil dregs. 3. Put the hot-splitting dregs into the container for emulsification directly and change the burning characteristics of the oil under normal temperatures. 4. Discharge the hot-splitting dregs with a closed method. 5. An effective and safe process to change the hot-splitting dregs to normal temperature oil, 6. The granularity of hot-splitting matter used to emulsify and mix is a liquid fuel below 100 μ m. Tn order to reach the intent and purpose of this invention, the first invention of application I is that of putting the hot-splitting dregs into the container for e ulsifϊcatiorj directly and cools them to emulsify the light oil and water primarily, and emulsify them in depth again and filter and separate them to get liquid fuels with different uses. Invention of application 2 is that because the liquid for emulsification contains water, discharging the hot-splitting dregs directly and mixing them into fuel oil. Then le the 200-300 ° C combustible fluid, created with this method and the liquid fuel thereafter created be stored and delivered to be burned under normal temperatures. Invention of application 3 is since the process is to discharge 200-300 " C combustible fluid, change to oil then store it under normal temperatures, to design a system of emulsification and the management of this system. According to be able to discharge oil dregs several times, emulsify thorn continuously and cool them primarily without over presis rissation and spontaneous combustion thereby guaranteeing a safe process that is not dangerous. Invention of application 4 is that of discharging the hot- slitting dregs with a closed system, that this method, guarantees the safety to discharge residuals and safely store them for delivery. Invention of application 5 is that operating the flush and related equipment to seal and discharge 200~300 " C splitting dregs, store for delivery and burning. It contains die container for emulsification, on-line system of emulsification and control system and closed system with safety features. Design of bottom has entrance to let out oil dregs, it is the joint with the equipment and discharging dregs system, and the container sends out the oil through the pump. Besides the above two and die joint of the outside system, this system is closed. And also accordmg to actual circumstances of outside equipment, it can be adjusted to reduce the amount of equipment needed as well. Invention of application 6 is the hot decomposition residual through the emulsification, with forms below micro granularity of 100 μ, m, the isotropic disperser to d e emulsified oil obtained may reduce the pollution of the fuel.