TWI268946B - Method and equipment for producing gasoline and diesel fuel from industrial plastic waste - Google Patents

Abstract

This invention provides a method and equipment for producing gasoline and diesel fuel from industrial plastic waste. Plastic wastes such as polyethylene, polypropylene, polystyrene, or polyethylene and polystyrene, or polypropylene and polystyrene in a ratio are mixed, which are then fed into a reactor installed with a twin spiral blender and a jacket having molten salt as heating medium for heating, liquefying and degrading. A viscosity reduction degradation is performed onto the material generated from the heating degradation reaction and the degraded gases are condensed to form liquids, which are sent to a rectification tower for rectifying. Meanwhile, the plastic molten liquid in the reactor is continuously pumped into a solid-liquid separation tank containing molten salt separation liquid for effectively separating residues and dirt in the reactor, in which the residues and dirt are discharged out of the tank through a screw compressor located at the bottom of the solid-liquid separation tank, while the clean plastic molten liquid is returned to the reactor. A pressure reduction distillation is carried out after the above-mentioned processes are completed. This invention requires no complicated catalytic degradation facilities, can be used for continuous production, and provide high fuel conversion, high fuel quality, low cost and conserve energy. Therefore, defects on conventional production technique of gasoline and diesel fuel from waste plastics and white pollutions can be effectively handled.

Description

1268946 V. Description of invention (1) ---

[Technical Field According to the Invention] The present invention relates to a method and an apparatus for producing gasoline and diesel oil for industrial waste plastics, and belongs to the field of petrochemical refining. [Prior Art] The amount of manpower in the country is especially high in China, and a good recovery of the catalytic cracking liquid of waste plastics is low in the following fires, and the impact is reduced; (3) Poor, the dynamics of the coke phenomenon is poor, Raw materials, the cost will be higher than a certain amount of equipment, or positive pressure surgery since the 1970s, many researchers around the world have devoted large and material resources to the research on the use of waste plastics to produce steam and diesel, 'more prominent, just The publication of the patent literature has been indiscriminate. It is said that the use of waste plastics to produce gasoline and diesel technology is a more plastic method. As far as the patent documents are published, the existing methods for producing gasoline and diesel oil are mainly to use complicated technology for waste plastics, and then directly burned with fire. After oiling, a higher viscosity is formed, and the finished product is obtained by steaming. Petrol and diesel. The above methods are insufficient, (1) complex catalytic cracking equipment is required; (2) the waste plastic is unevenly heated during the melting process, the temperature is high or the plastic cracking depth and coking phenomenon occur, and the plastic oil is refined under the quality of the refined oil. It is an endothermic reaction, the thermal conductivity of the material is longer than the thermal cracking temperature, and the heat exchange effect is poor, and four walls appear; (4) the viscosity of the liquid formed after the plasticization of the waste plastic is high, and the flow does not have a viscosity reducing device. The material is used as the basis of the distillation of the distillation column to cause the load of the rectification tower, and a large amount of refining oil is produced, so that refining, (5), waste plastics will be mixed with dirt, sand and the like during collection, tillering and blending. The separation of the harmful substances is not complete, and the slag discharge is not complete, and the operation cannot be continued; (6) the atmospheric pressure is used to reduce the taste and oil conversion rate of the oil πα, waste

1268946 _____ V. Description of invention (4) 〇 · 0 8 kg. The above-mentioned industrial waste plastic production includes a feeding device, a cracking reaction device, and the cracking reaction device described in Jinghan (1) is an internal double device, and a heat-conducting medium jacket (or a barrier layer) is further included for a viscous cohesive unit with the reaction device, a solid-liquid separation device for draining, a distillation portion, a slag discharge port of the reaction device and a fixed port, the gas phase outlet and phase of the reaction device The bottom material receiving device of the rectification column in the rectification section passes the waste plastic propelling material in the reaction device through the gas phase outlet of the reaction device, and the cracked gas is subjected to rectification and rectification through the condenser forming liquid. Part of the heavy oil at the bottom enters the reaction unit and is then cracked. At the same time, the reaction is pumped into the solid-liquid separation device, and the reaction soil is effectively separated. The residue and soil are discharged out of the cylinder through the solid screw extruder. Clean plastic Solvent re-cracking, in the process of completing the above, through the reduction of distillation 'to increase the oil yield and conversion rate. The above-mentioned reaction device may be in the form of a molten salt, a molten salt temperature of 2 〇〇 gasoline, a part, a reaction gas phase of the inner (outer and outer), a viscous liquid separation liquid, a solid liquid separation solid liquid, and a heating liquid reduction. Step-occupying the body, then to the solid-liquid set-up device, the liquid-discharge separation solution, the back-flow distillation type or the vertical °C; double, and the outward direction will be solid wood punching equipment, which is characterized by: a ribbon stirring device; (2) The material of the lower-connected upper splicing device that is connected to the end is separated from the outlet of the device. By the evolutionary cracking, the cleavage device is subjected to visbreaking and then sent to the fine separation unit, and the re-plasticizing solution is not broken, and the back-reaction device provided at the bottom of the mud device is subjected to a vacuum distillation type, and the heat-conducting ribbon agitator is used. It is a spiral belt clockwise rotation to push the slag: outside: with a stirrer, (4) the spiral belt rotates in the opposite direction, the inner screw rotates counterclockwise, the outer spiral

1268946 V. INSTRUCTIONS (7) No defective plastics reach thermal cracking, cracking a defect, with a clockwise outer spiral phase oil to obtain the inner wall to maintain the inner wall of the wall. 4 * The light oil waste plastic material is produced as A large number of traps, the use of viscosity, mention 5. Plastic quantitative mud reaction 莶 problem, the role of this hair. The hair oilization is inconsistent with the depth of the endothermic reaction temperature, and the invention rotates in the reactor, the inner spiral belt rotates in the reverse direction, and the heat exchange is formed, and the coke formed at intervals of 2 mm to 5 mm is accelerated, ' However, the length of the material is easy to cause the anti-concomitant local coking. There is an internal and external double-screw hour hand rotation, which is struck in the laminar flow, and the rate of cracking occurs. The outer screw's outer spiral band rotates, thus ensuring the thermal conductivity of the refining salt. The material is affected by the image. In order to work with a stirrer, the turbulent flow, the belt and the trough shape can be passed to the dad at any time, and the heat is unevenly solved. The outer snail uses the plastic reaction kettle to scrape off the heat effect, and the viscous yield is reduced. After the oiling, the refining oil of the Jingde Tower, the refining oil, the viscous kettle, and other materials of the refinery are used to collect the soil and the sandstone, and the solidification measures are adopted, and the base of the fine formation is reduced, so that other light and light oils are divided. Sorting and replacing, so that the liquid separation reduces the viscosity of the oil 馑 j ramie refining liquid compared with the base material, the oil cost increases and the low temperature cracking yield, the reduction, blending process 'the harmful substance can not continue from the cylinder The viscosity to the discharge increases the refinery---------〇-~~ high's poor fluidity, and this kind of 40% is the load of the tower. In order to solve this problem, the oil refining tower is reduced. If it is not cleaned, there will be a quality that will not affect the production if it is not removed. In order to solve this difficult problem, the κ\明 of mud, sand and other mud is based on the principle of organic and inorganic incompatibility and various

Page 11 1268946 V. Description of the invention (8) * One ~------ The characteristics of the material specific gravity are produced ^ By the reaction of the dad's discharge, the temperature pump is continuously flowing through the pipeline, due to the oil And the molten salt is not: the material in the kettle should be pumped into the solid-liquid separation weight, so the oil will rise out ": and the specific gravity of the oil is lighter than the ratio of dissolved salt into the reaction, and the gas is discharged from the reaction;; The residue on the liquid separation tank, such as dirt and sand, is: in the kettle. It enters the part of the solid-liquid separation tank. When it is deposited to a certain amount, it sinks into the solid-liquid separation base than the salt. The soil, and, == the press will discharge it. Repeat the cycle of operation to make it continuous:: Replace the 纟, prolong the realization of the reactor ΐ ==:::: u reduce the pressure and reduce the original (four), and then improve the oil :::: When the oil is pressed, the priest is π 口 Α ί ί ί ί 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源 源Once the total smashing 4 sighs, it can be continuously produced to solve the existing waste plastics:::: low cost, f about energy, defects 'effective treatment of white;;,: oil technology and equipment existing treatment methods . / Wood 疋 A Solid Waste Recycling Detailed Features and Advantages of the Invention: Implementation, and any relating to the present invention:: =:: Month: Branching and according to the above description of the present invention. The present invention is used to demonstrate and explain the principles of the present invention; μ and provide the specialization of the present invention

Page 12 1268946 V. DESCRIPTION OF THE INVENTION (9) [Embodiment] The features and implementations of the present invention are described in detail as a preferred embodiment. Example 1 In the first step, waste plastic polyethylene, polypropylene, and polystyrene are blended in a ratio of i · 1 : 0.8, such as polyethylene 100 kg, polypropylene.

Polystyrene 80 kg; A. In the second step, the waste plastics blended according to the above ratio are hydraulically propelled into a propeller with a double ribbon stirrer, and the molten salt is used as a heat transfer medium. The reactor is heated and liquefied, the molten salt temperature is 45 〇, and the liquefaction cracking temperature in the reactor is 3 5 G °C. The third step, the waste plastic in the reactor is heated to crack into the crucible kettle or other mitigation. The low-temperature cracking enthalpy is placed in the middle: visbreaking f retort, the viscosity reduction temperature is 250 〇C, the cracking gas is treated, the human t is the ten liquid, and the distillation column is sent to the rectification; * h cyclone Condensation is formed into a fourth step. At the same time, the solid-liquid octalysis solution containing the sulphate salt separation liquid is pumped into the reaction vessel, and the slag and the soil are effectively separated by the pump to carry out the separation in the reaction kettle to complete the return of the above steps. Reaction dad inside; kg ~ 1.06 kg. The working pressure of the reduced boiler is -0.04.

Brother 13 Page 1268946 V. Invention Description (ίο) The first step is to mix waste plastic polyethylene and polystyrene according to 丨·〇, such as 100 kg of polyethylene and 4 〇 of polystyrene; Step 'Pushing the waste plastics blended in the above ratio to push the double-belt stirrer with the dissolved salt as the heat-conducting trough or the heating and liquefaction cracking in the '4 reactor'赜: 度: degree is 5 5 0 C, reaction lad liquefaction temperature 4 5 〇 / dish third step, the waste plastic in the reaction kettle is heated and cracked, the anti-object 2 enters the visbreaking kettle or other mild low-temperature cracking device To the chemical distillation, the drying temperature is 3〇〇t, the cracking gas is condensed by the condenser to sputum the liquid, and sent to the rectification column for rectification; $成(\ 丄 fourth step' @, the plastic melting in the reactor The liquid passes through the pump and continues. The chestnut is filled with the dazzling: the solid-liquid separation cylinder that keeps the oil I knife away from the liquid, and the reaction kettle is Μ# L;:::effect: OK Separation, residual, ... the discharge of the branch at the bottom of the cylinder: outside, the clean plastic melt is returned to the reactor; distillation: (2) In the steps (3) and (4), the decompression crucible is implemented, wherein the reaction pressure of the dad is one. The first two are two pressures of -"4~-., kilograms, minus the dry dad 4 pressure 〇· 〇4~一〇· 〇8 kg. ρ i knife von Example 3 〇4 ratio; / person' polypropylene, polystyrene and other thermoplastic waste plastics according to the ratio of 1. Combination, such as polypropylene _ kg, polystyrene; 40. Stirring of the public T, with the molten salt as the heat transfer medium jacket push the M MWW will know the above ratio of the mixed waste plastic hydraulic propulsion There is a double screw belt in the advancement j^ ^

1268946

1268946 V. Description of invention (13) The machine is discharged outside the cylinder. Although the invention has been described above in terms of the preferred embodiments thereof, the invention has been described above. It is within the scope of patent protection of the present invention without departing from the spirit and scope of the invention. For the scope of protection defined, please refer to the attached patent application scope, but it is not within the scope of the invention.

Page 18

Claims (1)

1268946 Sixth, the scope of application for patents i. The method for producing steam/yield and diesel oil for industrial waste plastics according to claim 1, wherein the step (2) has a double-spiral belt feeder-external molten salt heat-conducting medium clip The reactor is a trough reactor or a vertical reaction dad. The method for producing gasoline and diesel oil for industrial waste plastics according to the first aspect of the patent application, wherein the molten salt temperature is 2 〇〇°c~8 〇〇t, and the temperature is 450 °c~550 °C. 3. The method for producing steam and diesel from the waste plastic for industrial use as described in claim 1 is characterized in that the temperature of the plastic liquefaction cracking in the step (2) is 305 ° C. 4 0 0 °C. 7. The method for producing steam and diesel oil for industrial waste plastics according to claim 1, wherein the double-spiral belt detacher J in the step (2) rotates clockwise, the inner ribbon Rotate counterclockwise, outer ribbon and reverse 1 should be: double ribbon stirrer with inner wall spacing of 2 mm~5 mm. The invention relates to the production of waste plastics for industrialization according to item 1 of the patent scope, and the gas method, wherein the wire method in the step (1) adopts a low-temperature cracking method of π or octahole, wherein the visbreaking body is horizontal The central 冋 = =, the longitudinal fire tube arrangement in the kettle, the bottom of the raft is equipped with a sedimentation tank, the upper part of the raft is connected with the tower. The viscosity reduction temperature of the plastic liquid in the dad is 25 0 t~ The oil is as the patent application scope The method, the cone, the upper end of the cylinder, the solid waste cylinder port in the step (4) of the industrial waste plastic production steam is connected with the reaction vessel vapor outlet, the lower end of the cylinder Page 20 1268946 VI. Patent Application Range When the hour hand rotates, the rotation of the outer ribbon pushes the solid object toward the slag discharge port, and the outer spiral band is spaced from the inner wall of the reaction raft by 2 mm to 5 mm.