WO1997019147A1 - Appareil pour liquefier des dechets de plastiques - Google Patents
Appareil pour liquefier des dechets de plastiques Download PDFInfo
- Publication number
- WO1997019147A1 WO1997019147A1 PCT/JP1996/003409 JP9603409W WO9719147A1 WO 1997019147 A1 WO1997019147 A1 WO 1997019147A1 JP 9603409 W JP9603409 W JP 9603409W WO 9719147 A1 WO9719147 A1 WO 9719147A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tank
- waste plastic
- oil
- water
- tower
- Prior art date
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 47
- 229920003023 plastic Polymers 0.000 title claims abstract description 45
- 239000004033 plastic Substances 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000010791 quenching Methods 0.000 claims abstract description 24
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 23
- 230000000171 quenching effect Effects 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000460 chlorine Substances 0.000 claims abstract description 9
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 150000002825 nitriles Chemical class 0.000 claims abstract description 5
- 239000003513 alkali Substances 0.000 claims abstract description 4
- 235000019738 Limestone Nutrition 0.000 claims description 24
- 239000006028 limestone Substances 0.000 claims description 24
- 238000000197 pyrolysis Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000012670 alkaline solution Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000004063 acid-resistant material Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 27
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 14
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 13
- 238000000354 decomposition reaction Methods 0.000 abstract description 10
- 238000005979 thermal decomposition reaction Methods 0.000 abstract description 7
- 230000002378 acidificating effect Effects 0.000 abstract description 6
- 230000003472 neutralizing effect Effects 0.000 abstract description 3
- 230000001627 detrimental effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- 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
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
- C10B47/22—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge in dispersed form
-
- 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
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
- C10K1/06—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials combined with spraying with water
-
- 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
Definitions
- the present invention relates to the treatment of waste plastics, and more particularly, to the effective and low-cost removal of harmful cracked gas and acidic components generated when thermal cracking waste plastics. It is related to waste zolastic oil conversion equipment.
- the present invention allows waste plastics to be directly charged into a pyrolysis tank without removing polyvinyl chloride in advance, thus facilitating handling and producing It is an object of the present invention to provide a waste plastic oil conversion device capable of effectively and at low cost removing toxic decomposed gas and acidic components.
- the waste plastic oil converting apparatus has been devised to achieve the above-mentioned object, and a waste plasticizer capable of containing a chlorine-based resin and a nitrile-based resin is thermally decomposed.
- a waste plasticizer capable of containing a chlorine-based resin and a nitrile-based resin is thermally decomposed.
- a pyrolysis oven that thermally decomposes the injected waste plastic
- a quench tower that cools oil vapor and decomposition gas generated from the pyrolysis oven with water, and used for cooling It is composed of a neutralization tank that neutralizes water with an alcohol, and an oil-water separation tank that separates condensed oil and water.
- the chlorine-based resin refers to a chlorine-containing resin such as polyvinyl chloride (PVC) and polyvinylidene chloride.
- the ditrile resin is a ditrile group-containing resin such as an ABS resin (acrylonitrile-butadiene-styrene copolymer). Nitrile resin may generate HCN gas by thermal decomposition.
- the waste plastic may be charged to the disassembly kettle without removing these.
- the piping from the pyrolysis tank to the quenching tower is preferably heated to 200 ° C or more, more preferably from 250 ° C to 350 ° C, by a heater means. Coated.
- the temperature of the cracked gas immediately before the quenching tower is preferably set to 250 ° C or more, more preferably, by using a heating means for keeping the temperature or heating by covering the pipe from the pyrolysis tank to the quenching tower. depending temperature regulating child to 2 5 0 ⁇ 3 5 0 ° C, when the content of 1 wt% or less of the PVC, and to suppress this a C 1 2 concentration in the recovered oil to 1 0 0 wt ppm% or less Can be done.
- an electric heater is used as the heater means.
- the pipe than is forced heated 2 0 0 ° C or higher by the heater, the reaction is suppressed the decomposition oil vapor and C 1 2. If the heating temperature of the tube is lower than 200 ° C, the reaction between oil vapor and chlorine proceeds rapidly, and organic chlorine compounds are generated.
- the quenching tower preferably has a cracked gas discharge pipe at the top of the tower. Is done.
- the HCN gas one of the pyrolysis products of waste plastics, remains in the form as it is, that is, without forming salts, and the system is discharged from the discharge pipe. Released outside.
- the acidity of the cooling water is too strong, the acid may corrode the tower, so an appropriate amount of water is supplied to the circulating cooling water so that such corrosion does not occur.
- the preferred pH of the circulating cooling water in the quench tower is 1 to 2.
- the inside of the quenching tower is made of a material having excellent acid resistance such as acid-resistant lining for preventing corrosion by acid.
- the neutralization tank is preferably equipped with a device that detects the pH of the solution and replenishes the neutralization tank with an alkaline solution so that the solution is always kept in alkaline.
- the neutralization tank has a packed bed of limestone instead of having the pH detection and alkaline solution replenishing device as described above, and the water used for cooling is passed through the limestone packed bed and neutralized. May be
- the neutralization tank When limestone is used as a neutralizing agent, the neutralization tank is provided with a limestone supply hopper at the top so that the limestone supplied from the hot pot descends in the tank by a moving bed method. It may be done.
- the pH detection and alkaline solution replenishing device By placing a sufficient amount of limestone in the hotspot, the pH detection and alkaline solution replenishing device as described above can be omitted.
- the neutralization tank has a limestone packed bed and water used for cooling is passed through the limestone packed bed and neutralized, the cost of running limestone is reduced by using inexpensive limestone as a neutralizing agent. Can save money.
- the neutralization tank has a limestone supply hopper at the top, and the limestone supplied from the hopper descends in the tank by a moving bed method, a sufficient amount of limestone is put in the hotspot.
- This makes it possible to omit complicated devices such as a pH detection device and an alkaline solution replenishing device, thereby simplifying maintenance and achieving a reduction in construction costs and base material costs.
- FIG. 1 is a system diagram showing Embodiment 1 of the present invention.
- FIG. 2 is a system diagram showing Embodiment 2 of the present invention.
- Figure 3 is a view to graph the relationship between the C 1 9 concentration in recovered oil and cracked gas temperature.
- Embodiments of the present invention are implemented by giving the following examples. Explain physically.
- waste plastic containing 1% by weight or 10% by weight of polyvinyl chloride is fed into the pyrolysis tank (1) by a feeder.
- the pyrolysis kettle (1) is heated by the burner (2), and the waste plastic is decomposed to produce cracked oil vapor and cracked gas.
- the gas mixture of the cracked oil vapor and the cracked gas is then sent from the pyrolysis tank (1) to the quench tower (3) via the pipe (4).
- the pipe (4) is covered with an electric heater that keeps or heats the pipe at 250 ° C. to 35 ° C.
- the quenching tower (3) has a decomposed gas discharge pipe (5) at the top of the tower, through which the decomposed gas is discharged out of the system.
- the inside of the quench tower (3) is made of acid-resistant lining to prevent acid corrosion.
- the gas mixture of cracked oil vapor and cracked gas is cooled by direct contact with cooling water.
- the cooling water of the quench tower (3) is circulated from the bottom to the top of the tower by a pump (11) outside the tower.
- the cooling water is supplied with an appropriate amount of water so that the hydrochloric acid concentration will not rise excessively and the tower will not corrode.
- the oil liquid condensed in the quenching tower (3) is sent to a neutralization tank (6), where it is neutralized with an alkaline solution to remove hydrochloric acid contained in the water in the oil liquid.
- the neutralization tank (6) includes an alkali replenishing device (7) for replenishing the neutralization tank with an alkaline solution, a ⁇ meter (8) for detecting ⁇ of the liquid in the neutralization tank, and A ⁇ adjuster (9) that receives the signal from the evening (8) and activates the alkali replenishing device (7) so that the ⁇ is always kept alkaline.
- ⁇ ⁇ of the solution in the neutralization tank becomes acidic by these devices, the alkaline solution is supplied to the tank. It is.
- the oily liquid containing water is then sent to an oil / water separation tank (10), the recovered oil in the upper layer of the tank (10) is sent to the oil tank, and the water in the lower layer of the tank (10) is collected as wastewater. And sent out of the system for processing.
- the total amount of C 1, the amount of H C 1 and the pH were measured for the obtained recovered oil.
- Table 1 shows the obtained measurement results.
- No. 1 is based on waste plastic containing 1% by weight of polyvinyl chloride, and Nos. 2 to 7 are wastes containing 10% by weight of polyvinyl chloride. It is made from plastic.
- the waste plastics of No. 2 to 7 contain 10 times more vinyl chloride than No. 1 and contain the total amount of C 1 and HC 1 in the recovered oil, despite containing polyvinyl chloride.
- the amount is slightly less than that of No.1. For this reason, even if waste plastic is directly introduced into the pyrolysis tank without removing the polyvinyl chloride in advance, the generated decomposed oil It can be seen that the chlorine component in the water and its cooling water can be effectively removed.
- a heat exchanger (12) is provided in the cooling water circulation line of the quench tower (3).
- the neutralization tank (13) is tower-shaped, has a hopper (14) at the top, and a packing holding plate (15) made of a perforated plate at the bottom, horizontally installed. Have been.
- the inside of the neutralization tank (13) is also filled with ash from a hopper [14], and a limestone filled layer (16) is formed on the holding plate (15).
- Hotsuba (14) contains a large excess of limestone relative to HC1 to be neutralized.
- the oil liquid condensed in the quenching tower (3) is sent to the bottom of the neutralization tank (13), where it goes up the limestone packed bed (16) and is neutralized by contact with limestone.
- hydrochloric acid contained in the water in the oil solution is removed.
- the oil solution containing water then goes out of the upper end of the oil / water separation tank (10) and is sent to the oil / water separation tank (10).
- the recovered oil in the upper layer of the tank (10) is sent to the oil tank.
- the water in the lower layer of the tank (10) is sent to the outside of the system as wastewater for treatment.
- This wastewater is neutralized to a pH of 6 or more and 8 or less by supplying a large excess of limestone as described above. Therefore, the pH detection and alkaline solution replenishing device provided in the first embodiment can be omitted.
- the present invention contributes to the treatment of waste plastics, and more specifically, is produced when waste plastics are pyrolyzed to oil. It is an object of the present invention to provide a waste plastic oil converting apparatus capable of effectively removing harmful decomposition gases and acidic components at low cost.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Processing Of Solid Wastes (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Coke Industry (AREA)
- Treating Waste Gases (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980703836A KR19990071562A (ko) | 1995-11-22 | 1996-11-21 | 폐플라스틱을 오일로 전환시키는 장치 |
EP96939296A EP0878531A4 (en) | 1995-11-22 | 1996-11-21 | APPARATUS FOR LIQUEFIING PLASTIC WASTE |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7/303215 | 1995-11-22 | ||
JP30321595 | 1995-11-22 | ||
JP2658396 | 1996-02-14 | ||
JP8/26583 | 1996-02-14 | ||
JP18706396A JP3376439B2 (ja) | 1995-11-22 | 1996-07-17 | 廃プラスチック油化装置 |
JP8/187063 | 1996-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997019147A1 true WO1997019147A1 (fr) | 1997-05-29 |
Family
ID=27285467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/003409 WO1997019147A1 (fr) | 1995-11-22 | 1996-11-21 | Appareil pour liquefier des dechets de plastiques |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0878531A4 (ja) |
JP (1) | JP3376439B2 (ja) |
KR (1) | KR19990071562A (ja) |
CA (1) | CA2238090A1 (ja) |
TW (1) | TW309453B (ja) |
WO (1) | WO1997019147A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10551059B2 (en) | 2014-12-17 | 2020-02-04 | Pilkington Group Limited | Furnace |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002301665A (ja) * | 2001-04-02 | 2002-10-15 | Mitsui Mining & Smelting Co Ltd | 研削砥石及びその製造方法 |
KR20030076008A (ko) * | 2002-03-22 | 2003-09-26 | 유지고하라 | 폐플라스틱 염화비닐의 유화장치 |
KR100861574B1 (ko) * | 2007-06-25 | 2008-10-07 | 한신테크놀로지 (주) | 폐플라스틱의 오일 환원 장치에 장착되는 역류 방지조 |
JP5962245B2 (ja) * | 2012-06-18 | 2016-08-03 | 富士通株式会社 | 分解油回収装置 |
CN113121997B (zh) * | 2021-03-19 | 2022-09-30 | 成都大学 | 一种基于腈基树脂回收的腈基树脂单组分复合材料及其制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06226233A (ja) * | 1993-01-29 | 1994-08-16 | Nichias Corp | 塩素含有プラスチック廃棄物の減容処理方法及び装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2132220A (en) * | 1982-12-10 | 1984-07-04 | Kameda Works Limited Company | Treating method for the industrial waste products under the dry distillation |
DE3725584A1 (de) * | 1987-08-01 | 1989-02-16 | Helmut Zink | Verfahren und vorrichtung zum thermischen aufbereiten von ausgangsmaterial |
DE3835827A1 (de) * | 1988-05-21 | 1990-04-26 | Asea Brown Boveri | Verfahren zum aufarbeiten von abfallmaterial |
FR2701035B1 (fr) * | 1993-02-01 | 1995-04-21 | Thermolyse Ste Francaise | Procédé et installation pour le traitement par thermolyse de déchets solides, sans condensation d'hydrocarbures. |
-
1996
- 1996-07-17 JP JP18706396A patent/JP3376439B2/ja not_active Expired - Fee Related
- 1996-11-21 CA CA002238090A patent/CA2238090A1/en not_active Abandoned
- 1996-11-21 TW TW085114347A patent/TW309453B/zh active
- 1996-11-21 EP EP96939296A patent/EP0878531A4/en not_active Withdrawn
- 1996-11-21 KR KR1019980703836A patent/KR19990071562A/ko not_active Application Discontinuation
- 1996-11-21 WO PCT/JP1996/003409 patent/WO1997019147A1/ja not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06226233A (ja) * | 1993-01-29 | 1994-08-16 | Nichias Corp | 塩素含有プラスチック廃棄物の減容処理方法及び装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10551059B2 (en) | 2014-12-17 | 2020-02-04 | Pilkington Group Limited | Furnace |
Also Published As
Publication number | Publication date |
---|---|
EP0878531A4 (en) | 1999-02-17 |
EP0878531A1 (en) | 1998-11-18 |
KR19990071562A (ko) | 1999-09-27 |
TW309453B (ja) | 1997-07-01 |
JPH09279155A (ja) | 1997-10-28 |
CA2238090A1 (en) | 1997-05-29 |
JP3376439B2 (ja) | 2003-02-10 |
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