WO2007125626A1 - 廃プラスチック成形方法及び廃プラスチック熱分解方法 - Google Patents
廃プラスチック成形方法及び廃プラスチック熱分解方法 Download PDFInfo
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- WO2007125626A1 WO2007125626A1 PCT/JP2006/323041 JP2006323041W WO2007125626A1 WO 2007125626 A1 WO2007125626 A1 WO 2007125626A1 JP 2006323041 W JP2006323041 W JP 2006323041W WO 2007125626 A1 WO2007125626 A1 WO 2007125626A1
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- plastic
- waste plastic
- nozzle
- molding
- coal
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/04—Conditioning or physical treatment of the material to be shaped by cooling
- B29B13/045—Conditioning or physical treatment of the material to be shaped by cooling of powders or pellets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
- B29B17/0036—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting of large particles, e.g. beads, granules, pellets, flakes, slices
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/12—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/07—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/16—Auxiliary treatment of granules
- B29B2009/168—Removing undesirable residual components, e.g. solvents, unreacted monomers; Degassing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0496—Pyrolysing the materials
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to a method of making waste plastic such as waste plastic generated in a plastic processing process or plastic such as used container packaging plastic into a high-density granular material.
- waste plastic such as waste plastic generated in a plastic processing process or plastic such as used container packaging plastic
- recycling method it relates to a method of obtaining a fuel gas, an oily product, and a coke by dry distillation in a coke oven.
- waste plastic generated in the plastic processing process and used plastics, hereinafter referred to as waste plastic
- the incinerator may be damaged due to high-temperature combustion in the furnace, or dioxin may be generated due to the reaction between mixed chlorine and generated hydrocarbons. Has occurred.
- landfill processing plastics and plastics did not rot, and the soil was solidified. '
- plastic-derived coke is mixed with coal-derived coke and is discharged from the coke oven and used as a reducing agent and fuel in blast furnaces and alloy iron manufacturing processes. '.-.,
- the method of carbonizing plastics in a “cokes oven” is an effective means of economically recycling plastics.
- due to lack of IE's knowledge of the relationship between how to use the bra stick and coke quality there was a problem with the quality of coke produced.
- the means described in Japanese Patent Application Laid-Open No. 1-5 7 8 3 4 uses a technique for recovering a large amount of gas and tar. Then, when the strength of the coke produced under these conditions decreased, there was a problem.
- the coax must be able to withstand the load conditions in these furnaces because it is used in large facilities such as blast furnace cubola, and it must have high strength. Coke. Strength deterioration was becoming an important quality issue.
- Japanese Patent Laid-Open No. 2 0 0 0-3 7 2 0 1 7 As described in the above, it is described that waste plastic particles having a predetermined size and high density are mixed with coal and the mixture is subjected to dry distillation. It is described that it is desirable to use a high-density plastic granular material having an apparent density of 0.45'95 kg / liter. Thus, the improvement by the method of increasing the density of the waste plastic particles has been performed conventionally. Disclosure of the invention
- the plastic U-cycle in the coke oven in the prior art has a high-density waste plastic as described in Japanese Patent Laid-Open No. 2 '0 0-3 7 2.0 1 7.
- a method has been used in which a granular material is mixed with coal and used in a wood-fired furnace. This method can be used because it is molded without melting the waste plastic.
- the area around the surface is fluffed, and the bulk density (the volume of space occupied by the granular material group, divided by the total mass of the granular material) decreases due to the influence of this part ;
- the granular material started bridging and could not be cut out from the storage tank.
- the fluffy part is separated from the main body ', and there are many problems with powder generation.
- the apparent density (the value obtained by dividing the mass of a single granular material by its volume) is generally 0.60.7 g / cm 3 , and is at most 0.7. It was about 8 g / cm 3 . Moreover, it was not possible to achieve 0.95 g / cm 3 or more by a special method such as by using a 35 mm small-diameter nozzle. As a result, there was a limit to the good effect of densification on box production, and further densification was required.
- the present invention solves the above problems and is a new technology that overcomes the disadvantages of the conventional method when producing high-density plastic granules from waste plastic and carbonizing it in a coke oven. is there.
- the present invention has been made to solve such a problem, and its contents are as described in (1) to (.9).
- Waste plastic contained in is used as a raw material.
- This waste plastic is molded using a molding method in which it is extruded from a nozzle with a screw-type pusher.
- the waste plastic is set to a temperature of 180 to 260 ° C. in the molding apparatus. In this state, the gas in the molding apparatus is sucked. By this operation, polyethylene, polypropylene, polystyrene are brought into a molten state, and the gas in the plastic is reduced.
- the surface temperature should be less than 80 ° 0 within 2 seconds. To do.
- a molding device that has a single indentation screw and arranges two to two nozzles, and the total nozzle diameter (nozzle diameter x number) is less than 1 Z4 of the circumference of the indentation screw Using the above equipment, waste plastic is molded by any of the above methods (1) to (3). '
- a molding device having a pair of push-in screws and arranging 2 to 8 nozzles, the total nozzle diameter (nozzle diameter X number) Using a device with a total screw perimeter of 1 to 6 or less, use any of the methods (1) to (3) above to mold waste plastic. '
- the volume of the granular material is from 600 to 200 cm.
- This granular material is mixed with coal having an average particle size of 5 mm or less, which is caustic to coal, and the mixture is fed to a coke oven.
- the waste plastic is pyrolyzed to obtain a combustible gas mainly composed of hydrogen and methane, and an oily product that is a hydrocarbon compound. Carbon from the carbonization residue is recovered as coke.
- the single maximum S of pores existing inside the plastic granular material is less than or equal to 1/3 of the volume of the plastic granular material, and the single volume of the pores is the plastic granular material. 10% or less of the volume of the product:
- a waste plastic pyrolysis method characterized in that a plastic granular material is mixed with coal and then carbonized in a coke oven.
- Figure 1 is a diagram showing the overall configuration of equipment for processing waste plastic. The ''
- FIG. 2 is a diagram showing a ⁇ example of the waste plastic molding apparatus for carrying out the present invention. .
- Fig. 3 is a diagram of a water cooling device for cooling a mass of waste plastic with fluidity extruded from a molding device used to carry out the present invention.
- Fig. 4 is a diagram of a granular material produced according to the present invention.
- FIG. ⁇ 'Fig. 5 shows the contents of the coking oven carbonization chamber.
- 'Fig. 6 is a diagram showing the results of examining the relationship between the strength of coke obtained from a mixture of various volumes of granular materials mixed with coal' and the mixing ratio of granular materials. The best mode for carrying out the invention, ''. As a plastic, a mixture of multiple types of plastic pieces is targeted.
- waste plastics discharged from households such as 'container packaging and daily plastic waste factory' are common.
- These waste plastics are a mixture of various plastic pieces, and are made from a material containing 50% by mass of a thermoplastic resin, polyethylene, and a heat-softening resin of polystyrene.
- the maximum ratio is preferably 90% by mass.
- it is desirable to perform the molding process after the crushing process because waste plastics can be easily molded by setting the maximum length to about 50 mm or less.
- waste plastic contains foreign matter, so it is good practice to remove the foreign matter before or after failure. Pressing during molding From the target to prevent deterioration of the special characteristics and properties, the amount of inorganic inclusions is
- a particularly desirable inorganic range is 0.5 to 5% by mass.
- FIG. 1 shows the configuration of a 'waste plastic treatment facility suitable for performing these operations'.
- Waste plastic as a raw material is cut into a size of 10 to 50 mm or less by crusher ⁇ 3 after removing inorganic substances by vibrating sieve 1 and magnetic separator 2.
- This cut plastic' is fed to the molding device 4 and molded. This is cooled to room temperature with a cooling device 5 to obtain grains +.
- FIG. 1 An example of a molding apparatus suitable for carrying out the present invention is shown in FIG.
- the molding device 4 has a supply port 6, a casing 7, a push-in screw 8, an end plate 9, a nozzle 1 0, an electric heating element 1 and 1, a mode 1 2 and a true
- the temperature of the waste plastic is raised to 180-260 ° C. by using the frictional heat generated at this time and the electric heating element 11 1.
- a heat-softening resin such as polyethylene, polypropylene or polystyrene is dissolved.
- Polyethylene, polypropylene, polystyrene, etc. should preferably be 50% by mass or more, and if the ratio is less than this, there will be a problem that the melted portion will decrease and the adhesion during molding will deteriorate.
- the ratio of polyethylene, polypropylene, polystyrene, etc. exceeds 90% by mass. As a result, the nozzle resistance of the molding machine decreases and the force to compress the plastic decreases, so hopefully it is 90% by mass or less.
- the temperature of the waste plastic in the molding equipment is 180 to 260 ° C.
- the temperature of this waste plastic is determined according to the blending ratio of each component of the plastic. However, if the ratio of thermosoftening resin is high, or if the blending ratio of low melting point polyethylene is large among thermosoftening resins, 1 8 0 Keep the temperature as low as ⁇ 200 ° C. Further, when the ratio of the heat softening resin is low, or when the blending ratio of a high melting point polypropylene is large, the temperature is set to about 20.degree. To 260.degree. ''.
- chlorinated resins such as polyvinyl chloride and polyvinylidene chloride have a problem of actively generating hydrogen chloride gas. Due to the generation of hydrogen chloride 'gas, there is a problem that the granular density swells and the apparent density does not increase. In addition, since hydrogen chloride gas is highly corrosive, it is desirable to suppress the generation of hydrogen chloride by treating it at 260 ° C or lower from the viewpoint of equipment maintenance.
- the waste plastic has a liquid part of 50 to 90%, and the solid or poorly fluid part has a state of 10 to 50%, and the plastic as a whole is in a fluid state.
- the waste plastic kneaded by the push screw 8 'due to the evaporation of some plastic components and the vaporization of some plastic components. If this is left as it is, the result is that internal pores exist in the granular material after cutting and cooling. As a result, there arises a problem that the apparent density of the granular material after cooling is reduced (in order to prevent this, from the plastic in the flow state via the exhaust pipe 14 connected to the vacuum pump 13.
- the suction pressure of the casing 7 be lower than the atmospheric pressure in the case 7.
- the suction pressure (absolute pressure) at this time should be 0.1 to ⁇ . ⁇ 5 atm, especially when processing plastics that contain vinyl chloride, etc., or under conditions of high productivity of 1 ton / hour or more per unit of molding equipment. It is necessary to keep the pressure relatively low, in particular, when chlorine resin is mixed at a ratio of 4% by mass or less in terms of chlorine, the pressure should be 0.1 to 0.35 atm.
- the plastic in the state of commuting has a high viscosity, even if the temperature is low and 3 ⁇ 4 degree If the pressure is not less than the pressure, it will take too much time for the gas to escape, and the gas will not be exhausted while the plastic in the fluid state is in the molding device, but if the suction pressure is too low, In some cases, there may be a problem that induces excessive gas generation due to decompression, so it is best to control the suction pressure to 0.1 atm or higher. In the case of 1 8 '0 to 2200 ° C, which is a low condition, the viscosity of the plastic is high, so the suction pressure should be in the range of 0.':! To 0.2 atm.
- the viscosity of the plastic is relatively low, so the suction pressure is particularly good in the range of 0.12 to 0.35 atm.
- the range of 0.1 to 0.2 atm is used. Household. In this condition, when the resin chloride is 0. 5 wt% or more chlorine terms is particularly effective is there. .
- the nozzle diameter should be 15 to 60 mm. In the case of a nozzle diameter of less than 15 mm, a phenomenon in which solids or poorly flowable parts in plastic in a flowing state increases the friction with the nozzle tends to occur. As a result, nozzle clogging is likely to occur. : Also, if the nozzle diameter exceeds 60, hi, the flow rate of plastic in the flowing state will be too high, and the density of the plastic inside the casing will not increase. . As a result, the apparent density does not increase. Also, because the plastic in this flow state has a large variation in viscosity, when extruding from multiple nozzles, there is a special operation to extrude plastic from each nozzle evenly.
- the most suitable force is a type with a sharp blade (30 ° or less is good) with a rotating blade. This is because a sharp blade is necessary to cut this fluid plastic. .
- the present inventors conducted experiments using a nozzle having a diameter of 15 to 60 mm, and obtained the following results.
- this relationship is evaluated quantitatively, it has been found that there are appropriate ranges for the diameter and nozzle diameter of the indentation screw 8 and the number of nozzles. If the ratio to the product of the number of nozzles is below a certain value, molding can be performed successfully.
- the total nozzle diameter (nozzle diameter X number) should be designed to be less than 1/4 of the circumferential length of push-in screw 8 Is valid is there. If the push screw 8 is composed of a pair (2 types), the total nozzle diameter should be less than 1 / .6 of the total screw circumference. ,
- the plastic extruded from the nozzle is cut by a cutter 15 to produce a plastic mass whose length is 1 to 3 times the diameter of the nozzle 10. Cool the mass immediately after cutting to produce normal temperature plastic granules. 'When the cooling start is delayed or the cooling rate is low, the phenomenon that the particulate matter swells due to the expansion of the gas remaining in the lump occurs. As a result, for the purpose of the present invention, high-density granular materials cannot be produced. Cutting 3 ⁇ 4; After the 'plastic' is still 'flowing' due to force and gas remaining inside. Therefore, it is necessary to quickly solidify the plastic in the fluid state. For this reason, cooling is started immediately after cutting. We still use a water cooling method that can achieve a high cooling rate. ''
- the present invention has a sufficient surface solidified layer. It can be formed within the required time.
- the plastic in the flowing state is immersed in water at 50 ° C or lower and sprinkled with water at 50 ° C or lower.
- a method such as soaking in running water is good. For example, there is a method as shown in the figure. Fill water tank 1.6 with 'water. 1 7', and put granular material 1 8 into 'this'.
- the temperature of water 17 is controlled by methods such as circulating cooling and cold water supply.
- the same phenomenon occurs at 5 mass% or less.
- the granular material produced has the advantage that this phenomenon is less likely to occur due to the higher density.
- Coal was pulverized to 5 mm or less. Use a mixture of caking coal and steaming coal. As a mixing method, a predetermined amount of granular materials and right charcoal are mixed so as to be uniform. Feed the mixture into a coke oven as shown in Figure 5.
- the mixture '25 supplied to the carbonization chamber 2 2 gradually becomes high temperature due to the heat of the heating chamber 23 on both sides'.
- Carbonization chamber wall 2 4 Carbonized from the surroundings. When the granular material reaches 25 '0 ° C or higher'. From the point, the pyrolysis reaction begins, and the plastic is hydrogen, carbon monoxide, methane.
- the optimal carbonization time is 18 to 24 hours, because plastic carbon is not caking.
- the coke strength at the interface between the plastic particles and coal is low, so the mixing ratio and properties of the particles are Affects coke quality.
- the granular material of the present invention has the following S point characteristics.
- the granular material of the present invention has a high density, when the same amount of waste plastic as the low density plastic granular material produced by the conventional method is mixed with coal, There is an advantage that the interfacial area is small.
- Fig. 6 shows the results of investigating the relationship between the strength of the coke obtained from a mixture of various volumes of particulate matter mixed with coal and the proportion of the particulate matter.
- the density of the plastic particles was 0.9 to 1.0. 5 kg Z liter.
- the volume is less than 600 cubic mm, it is a high-density grain; (Even if it is a dog, the effect of the invention is due to the problem that the interface area between waste plastic and coal becomes large.
- the volume exceeds 2 000 000 cubic mm, the gap after the volatile components (combustible gas and liquefied product) escape through thermal decomposition of the waste plastic will increase.
- the gap is too large, the strength of the produced coke will also be low.
- This limit is that the volume is 2 0 0 0.0 0.0 3 mm, that is, the volume of the granular material is 6 If it is 0 0 0 to 2 0 0 0 0 0 cubic mm (nozzle diameter is about 15 to 6.0 mm), the impact on the lowering of the coust strength is particularly small.
- the surface of the granular material is not connected to the inside, that is, that there are no holes or cracks penetrating from the surface to the inside. If the internal voids are connected to the outside, the water in the coal will enter the interior of the granular material when mixed with the coal. As a result, when the granular material is supplied to the high temperature part in the furnace, the water inside the granular material evaporates rapidly, and the filling state of coal around the granular material is disturbed. Intrusion is an important condition for producing high strength coke. . This kind of event occurs when the coal moisture is 4% by mass or more.
- raw material 1 having the composition shown in Table 1, the method of the present invention, a waste plastic granule was produced, and this was pyrolyzed in a cork and furnace.
- Raw material 1 was waste plastic recovered from the production process of the plastic processing plant.
- This', waste plastics such as vinyl chloride were not mixed with resin.
- ⁇ means polypropylene
- PS means polystyrene. (Unit: mass%)
- This mixed plastic is crushed into pieces with a maximum length of 25 mm, and is a single push-in screw of the type shown in Fig. 2 and installed in a molding machine with one nozzle with a diameter of 25 mm.
- 'Processing' was performed.
- the processing speed was 1 ⁇ 0 tons, and the processing temperature was set between 1 8.0 and 26 ° at 0 ° C in increments of 10 ° C.
- the suction pressure absolute pressure
- suction pressure is 0.1'4 at the time of '19 C ° C, 0.15 at the pressure of 20 ° C, 0.15 at the pressure of 0.15 °
- the pressure was 0.18 at 2600 ° C.
- the granular materials (products 1 to 5) obtained by the present invention were recycled in a coke oven. These granular materials had a smooth upper surface, and there were no cracks or pores reaching the inside. The maximum length of these closed pores was 2 to 10 mm, and none exceeded the representative length of 1 Z 2. Also, the volume of a single closed pore is 3-7% of the volume of particulate matter. Met. Regarding the processing conditions in the coke oven, the mixing ratio of these granular materials to the coal was 2.3 mass%, and the mixture was mixed almost uniformly and supplied to the coke oven carbonization chamber. The treatment time was 20 hours, and the treatment temperature was 1 160 ° C at the highest temperature.
- the amounts of combustible gas and liquefied material obtained were 4400 kg and 3500 kg, respectively, per ton of plastic.
- the coke was converted to about 190 kg and mixed with the coke derived from the right coal and integrated.
- the strength index of the coke was (0 to '5 2 to 1 to 0.78%). Thus, even at a relatively large mixing ratio of 2.3%, there was little decrease in coke strength.
- the strength index is indicated by the rate of occurrence of 15 mm or less after rotating 15,000 times at a speed of 15 revolutions per minute on a rotating wear device. Compared with the value of. ⁇ Table 2
- the granular material produced by the conventional method had an apparent specific gravity of 0 ′, 61 g / cm 3 .
- This granular material with a volume of 300,000 cubic mm was mixed with coal at a mixing ratio of 2.3% and recycled.
- the amount of combustible gas and liquefied material obtained with this granular material was the same as in Example 1.
- the strength index of the obtained coke (with no additive) was 1.2.5%. In this way, the coke strength index decreased greatly for granular materials with the same mixing ratio and low specific gravity.
- raw material 2 is a container / packaging collected from households and waste plastics for daily necessities. It contains 31% by mass of polyethylene, 18% by mass of polypropylene, and 4% by mass of polystyrene. Therefore, the total of polyethylene, polypropylene and polystyrene was 53.3% by mass. Chlorine contained in chlorinated resins such as polyvinyl chloride is 2.2% by mass.
- the product (granular material) obtained by the treatment here has a volume ', of 140,000 cubic mm, and an apparent density of 0.97.
- the granular material having a volume of 140,000 cubic m'm obtained in the present invention was recycled in a coke oven.
- the processing conditions are the same as in Implementation 1.
- the mixing ratio with coal was 2.8% by mass, and was almost uniformly mixed and supplied to the coke oven carbonization chamber.
- the strength index of the coke obtained by this treatment was (0.68%) (without addition), and there was little decrease in the coke strength. 'Example 3'
- waste plastics (raw material 3) with the composition shown in Table 1
- the waste plastic 'granular material was produced by the method of the present invention and pyrolyzed in a coke oven.
- Raw material 3 was collected from households and was used as waste plastic for containers and packaging, including 51% by weight of polyethylene, 19% by weight of polypropylene, and 8% by weight of polystyrene. Therefore, the total of polyethylene, polypropylene, and polystyrene was 78% by mass. ''
- This mixed plastic is broken into pieces with a maximum length of 50 mm and is the type described in ⁇ 2 but is a pair of screw-in screws with a diameter of 1 96 mm.
- the processing speed was 2.4 tons / hour and the processing temperature was' 1 85 ° C.
- the suction pressure was minus 0.1 1 atm.
- the flowing plastic from the molding device nozzle was poured into 40 ° C still water in 1 second.
- the product '(granular material) obtained by this treatment had a volume of 760 to 0 cubic mm and an apparent density of 0', 99. ,
- the granular material obtained by this treatment and having a volume of 76.00 cubic mm was recycled in a cake furnace.
- the processing conditions are the same as in Example 1.
- the mixing ratio with coal was 2.8% by mass, and it was mixed almost uniformly and fed to the coke oven carbonization chamber.
- the strength index of the coke obtained by this recycling process was 0.38% (without addition), and the decrease in coke strength was particularly small due to the large particle size.
- INDUSTRIAL APPLICABILITY According to the present invention, it is possible to economically produce high-density plastic granular materials with little powdering.
- the method described above Since the density of the granulated material is about 1.2 to 1.5 times higher than that of the conventional technology, the ratio of addition to the coke oven should be reduced even under recycling conditions of the same condition. Even if it is 1 to .2 to 1.5 times, it does not deteriorate the productivity of the coke oven and is useful for recycling plastics in the coke oven.
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0621622-6A BRPI0621622B1 (pt) | 2006-04-27 | 2006-11-13 | Refugo plastic molding method |
EP20060832919 EP2017050A4 (en) | 2006-04-27 | 2006-11-13 | PLASTIC WASTE MOLDING PROCESS AND PLASTIC WASTE PYROLYSIS METHOD |
US12/298,746 US20090102088A1 (en) | 2006-04-27 | 2006-11-13 | Method for molding waste plastic and method for thermal decomposition of plastic |
CA2650679A CA2650679C (en) | 2006-04-27 | 2006-11-13 | Method for molding waste plastic and method for thermal decomposition of plastic |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006122860A JP4469352B2 (ja) | 2005-04-28 | 2006-04-27 | 廃プラスチック成形方法 |
JP2006-122860 | 2006-04-27 |
Publications (1)
Publication Number | Publication Date |
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WO2007125626A1 true WO2007125626A1 (ja) | 2007-11-08 |
Family
ID=38655170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/323041 WO2007125626A1 (ja) | 2006-04-27 | 2006-11-13 | 廃プラスチック成形方法及び廃プラスチック熱分解方法 |
Country Status (9)
Country | Link |
---|---|
US (1) | US20090102088A1 (ja) |
EP (1) | EP2017050A4 (ja) |
KR (1) | KR101017714B1 (ja) |
CN (1) | CN101426628A (ja) |
BR (1) | BRPI0621622B1 (ja) |
CA (1) | CA2650679C (ja) |
RU (1) | RU2421330C2 (ja) |
TW (1) | TWI312309B (ja) |
WO (1) | WO2007125626A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2535266T3 (es) * | 2010-04-19 | 2015-05-07 | Holt Lloyd International Limited | Sellador para neumáticos y composición insuflante |
JP4920113B2 (ja) * | 2010-04-19 | 2012-04-18 | パナソニック株式会社 | 燃料ペレット、燃料ペレットの製造方法及び製造装置 |
US8536238B2 (en) | 2010-07-23 | 2013-09-17 | King Abdulaziz City For Science And Technology | Process for preparing insulation sheets from unseparated mixtures of post-consumer plastic articles |
EP2933289A1 (en) * | 2014-04-17 | 2015-10-21 | Rexest Grupp OÜ | Polymer composition from mixed plastic waste |
CN106929067A (zh) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | 一种包覆有低阶煤和颗粒物的型煤原料的提质工艺 |
MX2016006406A (es) * | 2016-05-16 | 2017-11-15 | Mexalit Ind S A De C V | Proceso de extrusion para la fabricacion de productos a partir de material plastico y metalico de desecho. |
KR101839959B1 (ko) * | 2016-08-29 | 2018-03-19 | 주식회사 포스코 | 성형탄 제조 설비의 원료 공급장치 및 원료 공급 방법 |
RU2689605C1 (ru) * | 2018-08-06 | 2019-05-28 | Александр Борисович Домрачев | Установка для предварительной переработки отходов полимеров и вспененных полимеров на месте их сбора |
CN110819413B (zh) * | 2019-12-20 | 2021-05-14 | 广州绿之洁清洁服务有限公司 | 一种利用废旧塑料制造固体燃料的设备 |
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JPH0577301A (ja) | 1991-05-10 | 1993-03-30 | Japan Steel Works Ltd:The | 射出成形における樹脂温度推定方法および装置 |
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2006
- 2006-11-13 RU RU2008146770A patent/RU2421330C2/ru active
- 2006-11-13 CN CNA2006800544023A patent/CN101426628A/zh active Pending
- 2006-11-13 KR KR20087025869A patent/KR101017714B1/ko active IP Right Grant
- 2006-11-13 US US12/298,746 patent/US20090102088A1/en not_active Abandoned
- 2006-11-13 TW TW95141877A patent/TWI312309B/zh active
- 2006-11-13 WO PCT/JP2006/323041 patent/WO2007125626A1/ja active Application Filing
- 2006-11-13 EP EP20060832919 patent/EP2017050A4/en not_active Withdrawn
- 2006-11-13 CA CA2650679A patent/CA2650679C/en active Active
- 2006-11-13 BR BRPI0621622-6A patent/BRPI0621622B1/pt active IP Right Grant
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Also Published As
Publication number | Publication date |
---|---|
KR20080111499A (ko) | 2008-12-23 |
CN101426628A (zh) | 2009-05-06 |
RU2421330C2 (ru) | 2011-06-20 |
CA2650679A1 (en) | 2007-11-08 |
US20090102088A1 (en) | 2009-04-23 |
CA2650679C (en) | 2012-12-11 |
KR101017714B1 (ko) | 2011-02-25 |
TW200740580A (en) | 2007-11-01 |
BRPI0621622A2 (pt) | 2011-12-13 |
TWI312309B (en) | 2009-07-21 |
EP2017050A4 (en) | 2012-03-28 |
EP2017050A1 (en) | 2009-01-21 |
RU2008146770A (ru) | 2010-06-10 |
BRPI0621622B1 (pt) | 2017-10-31 |
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