JP2012144609A - Catalytic cracking furnace for waste plastic, and continuous liquefaction apparatus for waste plastic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a catalytic cracking furnace capable of more efficiently decomposing waste plastics, and to provide a continuous liquefaction apparatus for waste plastics capable of efficiently, inexpensively and continuously producing fuel oil or the like from waste plastics.SOLUTION: In the catalytic cracking furnace 100, an encapsulated type furnace body 102 is disposed inside an encapsulated type casing 101 while leaving a gap space d, a heating chamber 103 is formed to heat the inside of the furnace body from the periphery of the furnace body by hot air helically passing through the gap space between the inner circumference of the casing and the outer circumference of the furnace body, a decomposition chamber 104, to which a waste plastic raw material P is supplied, is formed in the furnace body, and in the decomposition chamber, a catalyst C for catalytic cracking of the supplied waste plastic raw material P under heating conditions is reserved and in the decomposition chamber, a pair of kneading members 105 for kneading the waste plastic raw material P and the catalyst C is disposed. The liquefaction apparatus includes: the catalytic cracking furnace; a raw material supply means 200 of a waste plastic raw material; a hot air generating furnace 300; a fractional distillation means 400 for achieving the fractional distillation of decomposed gas G generated in the catalytic cracking furnace; an oil reserving means 500 reserving the distilled component; and a regenerating means 600 for the catalyst.

Description

  The present invention relates to a catalytic cracking furnace in which waste plastic is decomposed by catalytic reaction with a catalyst, and a waste plastic continuous oil converting apparatus including the catalytic cracking furnace.

  Plastic is a polymer compound, is produced from natural resources such as oil and natural gas, and is used in various fields such as packaging materials, various parts, and daily necessities. Most used plastic products are disposed of in landfills as waste plastic. However, in addition to the conventional problems of securing land for landfills and disassembling waste plastics, waste plastic recycling activities (waste plastic treatment) have been implemented in recent years as efforts toward the realization of a recycling-oriented environmental society are achieved. And recycling).

  As one of such waste plastic recycling technologies, inorganic oxide particles rich in fluidity are added to waste plastic and heated at a temperature of 200 to 500 ° C., and the liquefied oil of waste plastic obtained by heating is further added to another inorganic plastic. A waste plastic liquefaction method (Patent Document 1) has been proposed in which a fuel oil is obtained by contacting with oxide particles at a temperature of 200 to 500 ° C. for decomposition.

JP 2005-187794 A

  However, the above liquefaction method for waste plastics does not disclose a specific method for more efficiently catalytically cracking waste plastics or a method for efficiently purifying from cracked gas as a decomposition product.

  The present invention has been made in view of the above circumstances, and provides a catalytic cracking furnace capable of more efficiently decomposing waste plastics, efficiently decomposing waste plastics, An object of the present invention is to provide a waste plastic continuous oil converting device that enables low-cost continuous production.

In order to solve the above problems, a waste cracking catalytic cracking furnace according to the present invention comprises:
A closed furnace body is arranged inside the closed casing leaving a gap space around it,
In the gap space between the inner periphery of the casing and the outer periphery of the furnace body, a heating chamber for heating the inside of the furnace body from the surroundings is formed,
A decomposition chamber into which waste plastic raw materials are charged is formed in the furnace body,
The cracking chamber stores a catalyst for catalytic cracking of the waste plastic raw material charged under heating,
A main feature is that a pair of kneading members for kneading the waste plastic raw material and the catalyst that are input are arranged in the decomposition chamber.

  According to the waste cracking catalytic cracking furnace according to the present invention, hot air is supplied to the gap space between the inner periphery of the casing and the outer periphery of the furnace body, or an electric heating member is arranged in a wound shape on the outer periphery of the furnace body, The internal catalyst is heated from the entire outer periphery. Therefore, the catalyst in the heating chamber is efficiently heated as a whole, and the catalytic cracking reaction of the catalyst is promoted together with the kneading effect of the waste plastic raw material and the catalyst by the kneading member in the heating chamber. As a result, the waste plastic raw material introduced is efficiently thermally decomposed to obtain cracked gas. Then, by cooling and fractionating the cracked gas, a fractional component that becomes a fuel oil (naphtha, light oil, kerosene, heavy oil, etc.) or a plastic material can be obtained efficiently.

  In the waste plastic catalytic cracking furnace according to the present invention, the hot air from the hot air generating means passes through the heating chamber in a spiral shape and supplies heat into the furnace body from the outer periphery of the furnace body. Two features.

  In the waste plastic catalytic cracking furnace according to the present invention, the electric heating member is wound around the furnace main body, and heat generated from the electric heating member is supplied from the outer periphery of the furnace main body into the furnace main body. Three features.

  In the waste plastic catalytic cracking furnace according to the present invention, the pair of kneading members respectively include main shafts rotating in opposite directions, and a spiral ribbon screw is attached to the entire periphery of each main shaft. A fourth feature is that return paddle members, each of which has a blade inclined at a predetermined angle around its own axis, are attached at regular intervals between adjacent apexes.

  The waste plastic catalytic cracking furnace according to the present invention is characterized in that, in the cracking chamber, return screw blades are alternately provided at one end of each main shaft, and stop blades are alternately provided at the other.

  The waste plastic catalytic cracking furnace according to the present invention is characterized in that animal and vegetable oils are introduced in place of the waste plastic raw material.

  The waste plastic continuous oil converting apparatus according to the present invention comprises the catalytic cracking furnace, a raw material supply means for supplying waste plastic raw material to the catalytic cracking furnace, a heat supply means for supplying heat into the catalytic cracking furnace, and catalytic cracking. The main features include a fractionation means for fractionating the cracked gas produced in the furnace to obtain the desired distillate component, and an oil storage means for storing the distillate component obtained by the fractionation means.

  The waste plastic continuous oil converting apparatus according to the present invention includes a condenser in which the fractionating means condenses the cracked gas generated in the catalytic cracking furnace, and generates hot air that is the heat supply means for the cracked gas not condensed in the condenser. The second feature is that the combustion gas is sent to the burner of the furnace.

  The third feature of the waste plastic continuous oil converting apparatus according to the present invention is that it comprises a regenerating means for extracting and regenerating the used catalyst stored in the furnace body of the catalytic cracking furnace for a certain period of time.

  In the waste plastic continuous oil making apparatus according to the present invention, the regeneration means includes a regenerator body having a heating chamber, a regeneration catalyst tank for temporarily storing the regenerated catalyst, and a regeneration catalyst from the regeneration catalyst tank to the catalytic cracking furnace. A fourth feature is provided with a feeding means for feeding and a catalyst loading means for loading the used catalyst extracted from the catalytic cracking furnace into the heating chamber.

  The waste plastic continuous oil making apparatus according to the present invention is a catalyst after use in which a part of hot air generated in a hot air generating furnace as heat supply means is introduced into the heating chamber, and the hot air is introduced into the heating chamber. A fifth feature is that the material is heated and regenerated.

  As described above, according to the waste plastic decomposition furnace according to the present invention, heat is supplied to the heating chamber formed in the gap space between the inner peripheral surface of the casing and the outer peripheral surface of the furnace main body, and the radiant heat in the furnace main body By efficiently heating the catalyst from the surroundings and adding a kneading effect between the waste plastic raw material and the catalyst by the kneading members in the cracking chamber, the waste plastic raw material is efficiently pyrolyzed, There is an excellent effect that a fractional component such as fuel oil can be efficiently obtained.

  In addition, according to the waste plastic continuous oil converting apparatus according to the present invention, there is an excellent effect that the waste plastic can be efficiently decomposed and fractional components such as fuel oil can be produced efficiently and at low cost. .

  The best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows the overall configuration of a waste plastic continuous oil making apparatus S including a waste plastic catalytic cracking furnace 100 according to the present invention.

  In FIG. 1, a waste plastic continuous oil converting apparatus (hereinafter referred to as “oil converting apparatus”) S includes a waste plastic catalytic cracking furnace 100, and a raw material supply means 200 for supplying the plastic waste P to the catalytic cracking furnace 100. , A hot air generating furnace 300 which is a heat supply means for supplying heat to the catalytic cracking furnace 100, a fractionating means 400 for fractionating the cracked gas G generated in the catalytic cracking furnace 100, a light oil fractionated, etc. The main components are an oil storage tank 500 for storing the fractional distillation components and a regeneration means 600 for regenerating the catalyst C in the catalytic cracking furnace 100.

  The catalytic cracking furnace 100 generates waste gas by contacting the waste plastic raw material P with the catalyst C under heating, and a sealed furnace body 102 is disposed inside a horizontally long and sealed casing 101. Has been. As shown in FIGS. 2 and 3, a gap d is provided over the entire circumference between the inner peripheral surface of the casing 101 and the outer peripheral surface of the furnace main body 102, and the space of the gap d is hot air from the hot air generating furnace 300. A heating chamber 103 that passes in a spiral shape and heats the inside of the furnace main body 102 from the entire periphery is formed. A decomposition chamber 104 for waste plastic material P is formed inside the furnace body 102, and the catalyst C is stored in the decomposition chamber 104 to a predetermined height.

  As shown in FIGS. 2 and 3, a pair (two) of kneading members 105, 105 are arranged in the decomposition chamber 104, and each kneading member 105 is placed between the front and rear bearings 106, 106. Both ends of the main shaft 107 rotating in different directions (inward) are supported. A ribbon screw 108 is spirally attached around each main shaft 107 at a constant pitch p throughout. Between adjacent apexes of the ribbon screw 108, return paddle members 109, each having a blade inclined at a predetermined angle around its own axis, are attached at a constant pitch p and at intervals of 90 degrees in the circumferential direction. Further, in the vicinity of both bearings 106 of each main shaft 107, return screw blades 110 are alternately provided on one side, and stop blades 111 are alternately provided on the other side.

  When the agitating members 105 and 105 having such a structure are rotated inward with respect to each other as shown in FIG. 3 by the driving force from the driving source 112, the ribbon screw 108 causes the material charging unit 115 to be described later. The waste plastic raw material P charged into the decomposition chamber 104 of the furnace main body 102 is conveyed to one end side of the decomposition chamber 104 together with the catalyst C as shown by the arrow in FIG. In the vicinity, the return screw blade 110 returns the mixture to the adjacent ribbon screw 108 side, transports it from the adjacent ribbon screw 108 to the other end of the decomposition chamber 104, and then returns the mixture to the other end of the decomposition chamber 104. Returns the mixture to the first ribbon screw 108 side, and the first ribbon screw 108 is conveyed again to one end. While the mixture of the waste plastic raw material P and the catalyst C is conveyed together in the decomposition chamber 104 in the direction of the arrow, a large number of return paddle members 109 repeatedly move the mixture of the waste plastic raw material P and the catalyst C up and down. By kneading, the contact ratio of the entire waste plastic raw material P and the entire catalyst C is drastically increased.

  On the outer peripheral surface of the casing 101, there are provided a hot air introducing portion 113 for introducing hot air near one end of the heating chamber 103 and a hot air discharging portion 114 for discharging hot air from the other end of the heating chamber 103. In addition, a raw material input portion 115 for waste plastic raw material P, a catalyst input portion 116 for catalyst C, and a gas extraction portion 117 for cracked gas G generated in the main body 102 are provided on the outer peripheral surface of the furnace main body 102. It has been. The raw material charging unit 115, the catalyst charging unit 116, and the gas extraction unit 117 all penetrate the casing 101 and protrude outward. Note that a catalyst discharge unit 118 that discharges the used catalyst for regeneration and a residue discharge unit 119 that extracts a decomposition residue of the waste plastic raw material P are provided at the lower outer peripheral surface of the furnace body 102.

The catalyst C is an inorganic oxide fine particle or an inorganic composite oxide fine particle, such as SiO ₂ , Al ₂ O ₃ , ZrO ₂ , TiO ₂ , MgO, Sb ₂ O ₃ , SiO ₂ —Al ₂ O ₃ , SiO ₂ —TiO _2. SiO ₂ —ZrO ₂ , Al ₂ O ₃ —MgO, Al ₂ O ₃ —ZrO ₂ , Al ₂ O ₃ —TiO _2, etc. are used. Furthermore, natural zeolite and the like can be suitably used in addition to clay minerals such as bentonite, kaolinite and sepiolite, and composite oxide fine particles are particularly preferable because waste plastics can be liquefied at a lower temperature. The inorganic oxide fine particles constituting the catalyst C have an average particle diameter of 30 μm to 5 mm, preferably 30 μm to 1 mm, particularly preferably 30 to 150 μm. With such a range, it is possible to increase fluidity, increase the contact efficiency with waste plastic, and reduce the liquefaction temperature.

  The raw material supply means 200 includes a raw material tank 201 for temporarily storing the waste plastic raw material P and a raw material input conveyor 202, and inputs the raw material from the raw material input conveyor 202 to the raw material input unit 110 of the catalytic cracking furnace 100. As the waste plastic raw material P, waste plastics such as polyethylene, polypropylene, polystyrene, epoxy resin, polyester resin, phenol resin, polycarbonate resin, melamine resin, urea resin, alkyd, and polyurethane resin can be used. Waste plastics may contain various additives and coloring agents. Further, it is desirable to remove the vinyl chloride resin in advance, but it may be contained in some amount. The waste plastic raw material P is preferably as small as possible, crushed, shredded, etc., and the size of the waste plastic raw material P is preferably about 2 mm to 50 mm.

The hot air generating furnace 300 is a furnace that generates hot air (500 to 650 ° C.) H to be supplied to the heating chamber 103. A combustion chamber 302 is formed inside the casing 301, and combustion is performed by ignition of a burner 303 attached to the casing 301. fuel oil within chamber 302 to combustion (diesel, kerosene, heavy oil, etc.) of gas from the off-gas line L ₆ to or later, to generate combustion gases, so as to generate hot air (500 to 650 ° C.) H Yes. A hot air supply line L ₁ is provided from the hot air outlet 304 of the casing 301 of the hot air generating furnace 300 to the hot air introducing section 113 of the catalytic cracking furnace 100. Further, a hot air circulation line L ₂ is provided from the hot air discharge part 114 of the catalytic cracking furnace 100 to the hot air return part 305 of the hot air generator 300, and a circulation blower 306 provided in the middle of the hot air circulation line L ₂ Hot air generated in the hot air generating furnace 300 is circulated to the combustion chamber of the hot air generating furnace 300 via the heating chamber 103 of the catalytic cracking furnace 100.

The fractionating means 400 is an apparatus for fractionating the cracked gas G rising from the gas extraction part 117 of the catalytic cracking furnace 100 using the difference in boiling point, and the distillation column 401 has a packing 402 for distillation. Are incorporated in a plurality of stages, and a wet dust collection filler 403 is incorporated in the lowermost stage. A condenser (condenser) 404 is arranged on the upper side of the distillation column 401, and the cracked gas G that has risen in the distillation column 401 is sent to the condenser (condenser) 404, cooled and condensed, and it is adapted to reflux the distillation column 401 through reflux line L _3. The condensate refluxed to the distillation column 401 is dropped from the liquid disperser 405 to the lower packing 402, and the cracked gas G from below is brought into gas-liquid contact on the surface of the packing 402.

A liquid collector 406 is disposed above the middle stage of the distillation column 401, and a redisperser 407 is disposed below the liquid collector 406. Low-boiling light oil component as a distillate in Osamueki 406 (naphtha, kerosene, gas oil) are Osamueki, Osamueki been light oil (fuel oil) O is product oil storage through component extraction line L ₄ It is stored in the tank 500. The condensate L that has not been collected is dropped from the re-dispersing device 407 into the packing 402 under it, finally reaches the catalytic cracking furnace 100, and rises again in the distillation column 401 as the cracked gas G. By repeating this, the ratio of the light oil component having a low boiling point increases in the upper part of the distillation column 401, and the ratio of the heavy oil component (such as heavy oil) having a high boiling point increases in the lower part. By appropriately adjusting the height positions of the liquid collector 406 and the re-disperser 407, the target component can be separated and taken out.

Thus, by disposing the fractionating means 400 on the catalytic cracking furnace 100, the cracked gas G generated by cracking the waste plastic raw material P is efficiently separated into light oil components and heavy oil components. You can take them out. Incorporating the dust collection filler 403 at the bottom of the distillation column 401 can prevent floating components (catalyst, waste plastic) generated in the catalytic cracking furnace 100 from entering the distillation column 401. Also by disposing the offgas line L ₅ from the condenser 404 to the burner 303, the decomposition gas G uncondensed can be supplied as a combustion gas of the burner 303 as off gas.

The regeneration means 600 is a means for gradually removing the catalyst C in the catalytic cracking furnace 100 and regenerating and returning it again. The catalyst C has a reaction area component of waste plastic adhering to its surface due to repeated use, and the contact area is reduced. The performance as a catalyst gradually decreases. The regenerating unit 600 includes a regenerator main body 602 including a heating chamber 601 and a regenerated catalyst tank 603 that temporarily stores the regenerated catalyst C. The regenerator main body 602 is provided with a charging conveyor 604 for gradually charging the used catalyst into the heating chamber 601, and the charging conveyor 604 is provided with a conveying screw 605. From furnace body 102 side of the catalyst discharge portion 118 to the charging conveyor 604 extends catalyst transport line L _6, and the catalyst C ₁ after use from the catalyst discharge unit 118 so withdrawn little by little. Further, a hot air branch line L ₇ branched from the middle of the hot air circulation line L ₂ is extended and connected to the hot air introducing portion 606 of the regenerator body 602 so that a part of the hot air is introduced into the heating chamber 601. It has become.

Was heated to catalyst C ₁ after use, which is turned in the heating chamber 601 of the regenerator body 602 by adding hot air H, it adapted to regenerate the catalyst by decomposing the reaction residue component surface. Catalyst C after regeneration is temporarily stored in the regenerated catalyst tank 603 through transport line L ₈ by the conveying screw 607, through the conveyor 608 and conveying line L ₈ arranged underneath the regenerated catalyst tank 603, catalytic cracking furnace 100 of the catalyst It returns to the decomposition chamber 104 from the input part 116. Further, the catalyst particles generated in the heating chamber 601 of the regenerator 602 is sent from the extraction unit 609 to the cyclone 610, it is centrifugally separated in the cyclone 610, so as to join the conveying line L _8.

  Next, the operation of the waste plastic continuous oil making apparatus S configured as described above will be described.

First, the circulation blower 306 is actuated and sends the air into the combustion chamber 302, thereby generating combustion gases by the ignition of the burner 303, the hot air of 500 to 650 ° C., the hot air supply line _{L 1} from the hot air outlet 304 As described above, the hot air introduction unit 113 of the catalytic cracking furnace 100 supplies the heating chamber 103. The hot air H passes through the heating chamber 103 in a spiral shape and gives heat from the entire periphery into the furnace main body 102, then reaches about 450 to 500 ° C. and exits from the hot air discharge unit 114, and passes through the hot air circulation line L ₂ . As a result, the process returns to the hot air return unit 305 of the hot air generating furnace 300. At the same time, the catalyst C is stirred by rotating the stirring members 105 and 105 inward by the operation of the drive source 112. In the meantime, the heating chamber 103 in the furnace main body 102 becomes high temperature of about 400-450 degreeC.

  When the catalyst C in the furnace body 102 reaches the reaction temperature, the waste plastic raw material P in the raw material tank 201 is charged into the raw material charging unit 110 of the catalytic cracking furnace 100 by the operation of the raw material charging conveyor 202. In the decomposition chamber 104, the mixture of the catalyst C and the introduced waste plastic raw material P is conveyed together in one direction as indicated by the arrow shown in FIG. At that time, a large number of return paddle members 109 repeatedly knead the mixture of the waste plastic raw material P and the catalyst C up and down. The raw material feeding conveyor 202 may be operated based on a signal from a temperature sensor disposed in the decomposition chamber 104.

  Then, at the end in one direction, the return screw blade 110 returns these mixtures to the adjacent ribbon screw 108 side and conveys them from the adjacent ribbon screw 108 to the other end, and the return screw blade 110 mixes these. Return the body to the first ribbon screw 108 side. In the high-temperature decomposition chamber 104, the waste plastic raw material P and the catalyst C are repeatedly brought into contact with each other and the catalytic reaction is promoted. As a result, the waste plastic raw material P is thermally decomposed and a cracked gas G is generated.

The cracked gas G generated in the heating chamber 104 is fractionated in the distillation column 401 and separated into a light oil component having a low boiling point (naphtha, kerosene, light oil) and a heavy oil component having a high boiling point (heavy oil, etc.). , light oil O in the former from Osamueki 406 is distillate components are stored in the product oil storage tank 500 through the component take-out line L _4. In this way, by disposing the distillation tower 401 on the catalytic cracking furnace 100, the cracked gas G generated by cracking the waste plastic raw material P is efficiently separated into light oil components and heavy oil components and those components are separated. Can be taken out.

Decomposition gas G uncondensed that was not refluxed to the distillation column 401 from the condenser 404 passes through the offgas line L _5, sent to the burner 303 can be used as combustion gas for hot air generator. Thereby, fuel costs, such as heavy oil, can be saved.

Little by little withdrawn operating the catalyst C ₁ after use from the furnace body 102 side of the catalyst discharge portion 118. The catalyst C ₁ extracted from the catalyst discharge unit 118 passes through the catalyst transport line L ₆ and is input into the regenerator body 602 from the input conveyor 604. The input conveyor 604 may be automatically operated after a predetermined time has elapsed from the operation of the raw material input conveyor 202. As a result of introducing a part of the hot air branched from the middle of the hot air circulation line L ₂ into the heating chamber 601, the used catalyst C ₁ that has been put into the heating chamber 601 without preparing a new heat source is used. Is heated, and the reaction residue components on the surface are thermally decomposed to regenerate the catalyst.

The regenerated catalyst, after being stored in the regenerated catalyst tank 603 through the conveying line L ₈ from conveyor 608, so returned to the decomposition chamber 104 of the catalytic cracking reactor 100, the decomposition chamber 104, which is turned on A fresh catalyst can always be supplied to the waste plastic raw material P, and the catalytic cracking ability of the waste plastic raw material P can be always kept constant.

  The waste plastic continuous oil making apparatus S including the hot air generating furnace 300 is suitable for a large apparatus. Instead of the hot air generator 300, an electric heating member can be used as the heat supply means. That is, in the heating chamber 103 of the catalytic cracking furnace 100, an electric heating member is wound around the furnace main body 102 so that heat generated from the electric heating member is supplied from the outer periphery of the furnace main body 102 into the furnace main body 102, and the entire apparatus is It can be downsized.

  Thus, the waste plastic can be efficiently decomposed by using the waste plastic catalytic cracking furnace according to the present invention, and the waste plastic can be efficiently decomposed by using the waste plastic continuous oil converting apparatus S. Thus, the target fuel oil can be produced continuously and efficiently at a low cost.

  The waste plastic catalytic cracking furnace according to the present invention can also be used as a biodiesel fuel (BDF) production furnace using animal and vegetable oils as a raw material. That is, animal and vegetable oils as raw materials are fed from the raw material charging unit 115 into the cracking chamber 104 of the furnace body 102, and the biaxial kneading member 105 is rotationally driven to be catalytically cracked with the catalyst C under heating. (BDF) can be produced efficiently.

  The waste plastic catalytic cracking furnace according to the present invention is used as a furnace for decomposing waste plastic and as a BDF production furnace, and the continuous plasticizer for waste plastic is an apparatus capable of continuously obtaining fuel oil from ash plastic. In addition, it can also be used as an apparatus for continuously producing BDF from animal and vegetable oils.

The figure which shows the whole structure of the waste plastic continuous oil-ized apparatus which concerns on this invention, FIG. 1 is a horizontal sectional view of a catalytic cracking furnace included in the waste plastic continuous oil converting apparatus of FIG. AA sectional view of the catalytic cracking furnace shown in FIG. It is a figure which shows the effect | action of the catalytic cracking furnace shown in FIG.

DESCRIPTION OF SYMBOLS 100 Waste plastic contact cracking furnace 101,301 Casing 102 Furnace main body 103,601 Heating chamber 104 Decomposition chamber 105 Kneading member 106 Bearing 107 Rotating shaft 108 Ribbon screw 109 Return paddle member 110 Return screw blade 111 Stop blade 112 Drive source 113, 606 Hot air introduction section 114 Hot air discharge section 115 Raw material input section 116 Catalyst input section 117 Gas extraction section 118 Catalyst discharge section 119 Residue discharge section 120 Regenerated catalyst input section 200 Raw material tank 300 Hot air generating furnace 302 Combustion chamber 303 Burner 304 Hot air outlet section 305 Hot air return section 306 Circulating blower 400 Fractionation means 401 Distillation tower 402 Packing material 403 Dust collection packing 404 Condenser 405 Liquid disperser 406 Liquid collector 407 Redisperser 500 Product oil storage tank 600 Regenerator 602 regenerator body 603 regenerated catalyst tank 604 feed conveyor 607 conveying screw 608 conveyor 609 extraction unit 610 cyclone L ₁ hot air supply line L ₂ hot air circulation line L ₃ return line L ₄ component extraction line L ₅ offgas line L ₆ catalyst transfer line L ₇ Hot air branch line L ₈ Conveying line C, C ₁ catalyst G Decomposed gas O Condensate S Waste plastic continuous oil generator

Claims (11)

A closed furnace body is arranged inside the closed casing leaving a gap space around it,
In the gap space between the inner periphery of the casing and the outer periphery of the furnace body, a heating chamber for heating the inside of the furnace body from the surroundings is formed,
A decomposition chamber into which waste plastic raw materials are charged is formed in the furnace body,
The cracking chamber stores a catalyst for catalytic cracking of the waste plastic raw material charged under heating,
A waste plastic catalytic cracking furnace characterized in that a pair of kneading members for kneading charged waste plastic raw material and catalyst are arranged in the cracking chamber.   The waste plastic catalytic cracking furnace according to claim 1, wherein hot air from the hot air generating means passes through the heating chamber in a spiral shape and supplies heat into the furnace body from the outer periphery of the furnace body.   2. The waste plastic catalytic cracking furnace according to claim 1, wherein the electric heating member is wound around the furnace main body, and heat generated from the electric heating member is supplied into the furnace main body from the outer periphery of the furnace main body.   Each of the pair of kneading members includes main shafts that rotate in different directions, and a spiral ribbon screw is attached to the entire periphery of each main shaft, and a paddle around its own axis is placed between adjacent tops of the ribbon screws. The waste plastic catalytic cracking furnace according to any one of claims 1 to 3, wherein return paddle members having blades inclined at a predetermined angle are attached at regular intervals.   5. The waste according to claim 1, wherein in the decomposition chamber, return screw blades are provided alternately at one end of each main shaft, and stop blades are provided alternately at the other end. Plastic catalytic cracking furnace.   The catalytic cracking furnace according to any one of claims 1 to 5, wherein animal and vegetable oil is introduced in place of the waste plastic raw material.   A catalytic cracking furnace according to any one of claims 1 to 5, a raw material supply means for supplying waste plastic raw material to the catalytic cracking furnace, a heat supply means for supplying heat to the catalytic cracking furnace, Waste comprising: a fractionating means for fractionating a cracked gas generated in a cracking furnace to obtain a target distillate component; and an oil storage means for storing the distillate component obtained by the fractionating means. Plastic continuous oiling equipment.   The fractionation means is equipped with a condenser that condenses the cracked gas generated in the catalytic cracking furnace, and the cracked gas that has not been condensed in the condenser is sent as a combustion gas to the burner of the hot-air generator that is the heat supply means. The waste plastic continuous oil-ized device according to claim 7.   The waste plastic continuous oil making apparatus according to claim 7 or 8, further comprising a regenerating unit that extracts and regenerates the catalyst stored in the furnace body of the catalytic cracking furnace after use for a certain period of time.   The regeneration means is extracted from the regenerator body having a heating chamber, a regeneration catalyst tank for temporarily storing the regenerated catalyst, a supply means for sending the regeneration catalyst from the regeneration catalyst tank to the catalytic cracking furnace, and the catalytic cracking furnace. The waste plastic continuous oil-producing apparatus according to any one of claims 7 to 9, further comprising catalyst charging means for charging the used catalyst into the heating chamber.   A part of hot air generated in a hot air generating furnace as heat supply means is introduced into the heating chamber, and the used catalyst charged into the heating chamber is heated and regenerated by the hot air. The waste plastic continuous oil-ized apparatus as described in any one of Claims 7 thru | or 10.

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