CN104211984A - Rotary spiral waste organic glass propelling and continuous splitting decomposition method and device - Google Patents
Rotary spiral waste organic glass propelling and continuous splitting decomposition method and device Download PDFInfo
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- CN104211984A CN104211984A CN201410501332.8A CN201410501332A CN104211984A CN 104211984 A CN104211984 A CN 104211984A CN 201410501332 A CN201410501332 A CN 201410501332A CN 104211984 A CN104211984 A CN 104211984A
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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
- 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
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Abstract
The invention relates to a rotary spiral waste organic glass propelling and continuous splitting decomposition method and device and belongs to the field of chemical engineering. The raw material splitting decomposition efficiency and product recovery rate can be improved, and energy consumption and pollutant discharge can be reduced. The device comprises a feeding device, a splitting decomposition device, a condensing device and a waste gas treatment device which are sequentially connected, and further comprises a pressure limiting valve, a residue discharging pipe, a star-shaped valve, a feeding port, guide blades and a discharging port, wherein the pressure limiting valve is used for controlling pressure intensity in a splitting decomposition kettle. The feeding port is movably connected with a feeding pipe. The guide blades are fixedly arranged in the splitting decomposition kettle, and materials are spirally propelled from the feeding port to the discharging port. A hearth is provided with a thermometer. The discharging port is movably connected with the residue discharging pipe, and the residue discharging pipe is connected with the star-shaped valve. The condensing device is connected with the splitting decomposition device through a guide pipe, the guide pipe penetrates through the residue discharging pipe to extend into the discharging port, the guide pipe, a water-cooling device, a storage tank and a copious cooling device are connected in sequence, and the storage tank is arranged at the lower end of the water-cooling device and the lower end of the copious cooling device. The waste gas treatment device is connected with the copious cooling device.
Description
Technical field
The present invention relates to a kind of waste and old organic glass rotation spiral shell formula and advance continuous cracking method and equipment thereof, specifically refer to that adopting waste and old organic glass is that raw material is prepared methyl methacrylate, belongs to chemical field.
Background technology
Pyrolysis technology is one of important means reclaiming in chemical field various resource reutilizations, often uses cracking still to carry out cracking recovery.
Waste and old organic glass returned enterprise of the prior art is generally small, layout is too at random, production technique falls behind, equipment and technique are all extremely simple and crude, manage original extensively, whole efficiency is low, and volatile organic contaminant outlet is many, the waste gas producing is not just administered discharge arbitrarily substantially, and pollution level is high, scope is large.Waste and old organic glass regeneration enterprise is taking monomer cracking and plasticizing as main, and a whole set of production technique mainly can be divided into the three process such as cracking, rectifying and making sheet.What its cracking technology adopted is intermittently autoclave pyrolyzer destructive distillation, and making sheet is to take manual operation grouting, and what whole process was taked is the operation that intermittent type is uncovered, and pollutant discharge amount is very large.
What in waste and old organic glass reclaims, conventionally adopt is intermittent type scission reaction still, and operation is also step, and energy utilization and lysis efficiency are relatively low, and opens the still Shi Douhui that feeds intake at every turn and give off a large amount of waste gas from dog-house, thereby pollutes.In addition, owing to taking direct heating, cracking temperature is high, causes residue and amount of by-products to increase.
For the problems referred to above, existing Some Enterprises is designed a set of waste organic glass continuous cracking device.As Chinese Patent Application No. " 201010121977.0 " discloses a kind of " waste organic glass continuous cracking device ", the safety line with pressure relief pipe is set up in this patent application on the solid-gas separator of pyrolyzer discharge pipe, realized the shunt condensation liquefaction of pyrolyzer inner high voltage gas by discharging pipeline and safety line, make this cracker can reach continuous cracking effect, but the gas of this technical scheme after due to cracking does not arrive emission standard through condensation process for the first time, must the gas after condensation process for the first time be carried out to circulating condensing processing again by safety line, structure is comparatively complicated, and in equipment running process, fire resisting damper is if there is damaging phenomenon, very easily there is security incident.
Summary of the invention
The object of the invention is to overcome above shortcomings in prior art, and provide a kind of reasonable in design, a kind of waste and old organic glass rotation spiral shell formula safe and work of energy continuous cracking to advance continuous cracking method and equipment thereof.
The present invention addresses the above problem adopted technical scheme: a kind of waste and old organic glass rotation spiral shell formula advances continuous cracking equipment, comprise the feeding unit, cracker, condensing works and the emission-control equipment that connect successively, described feeding unit comprises loading hopper, feed pipe, motor and spiral handspike, and material is pushed to cracker by described electric machine control spiral handspike; Described cracker comprises burner hearth, rotating machine and cracking still, and described rotating machine control cracking still rotates in burner hearth, and described burner hearth is provided with blast inlet and air outlet; It is characterized in that: described cracker also comprises pressure limiting valve and slag discharging device the pressure in described pressure limiting valve control cracking still; Described cracking still comprises opening for feed, turning vane and discharge port; Described opening for feed is flexibly connected with described feed pipe; Described turning vane is fixedly installed on described cracking still inside, will expect from opening for feed spiral pushing to discharge port; Described burner hearth is provided with thermometer; Described slag discharging device comprises Residue extraction pipeline and Starlike valve, and described discharge port is flexibly connected with described Residue extraction pipeline, and described Residue extraction pipeline is connected with described Starlike valve; Described condensing works is connected with cracker by conduit, described conduit runs through Residue extraction pipeline and stretches in discharge port, described condensing works comprises water cooling plant, hold-up vessel and cryogenic unit, described conduit, water cooling plant, hold-up vessel, cryogenic unit connect successively, the lower end of described hold-up vessel setting and described water cooling plant and cryogenic unit; Described emission-control equipment is connected with described cryogenic unit.
Further, described opening for feed of the present invention and feed pipe junction and described discharge port and Residue extraction pipeline junction are equipped with tightness system.
Further, described feeding unit of the present invention also comprises electric heater, and described electric heater is arranged at the outside surface of described feed pipe.
Further, described blast inlet of the present invention is located at the lower end of described opening for feed, and described air outlet is located at the upper end of described discharge port, and described thermometer is arranged at described discharge port place, and described pressure limiting valve is arranged at the opening for feed upper end position of cracking still.
Further, described conduit of the present invention is being arranged to " n " type bending with condensing works junction, and described cryogenic unit adopts compression refrigerator, and described emission-control equipment adopts photocatalysis treatment device.
Further, described water cooling plant of the present invention comprises first-stage condenser and secondary condenser, described first-stage condenser is connected with conduit, and the lower end that secondary condenser is arranged at first-stage condenser is connected with it, described first-stage condenser and secondary condenser water inlet direction all with the interior exhaust flow of conduit to contrary.
A kind of waste and old organic glass rotation spiral shell formula advances continuous cracking method, it is characterized in that: technical process is as follows:
(1) waste and old organic glass processing: synthetic glass scrap stock, clout and old waste material are carried out to fragmentation, and the material grain that obtains synthetic glass is for subsequent use;
(2) screw conveying feeding: the rotation of electric machine control feed pipe, described material grain enters in feed pipe by loading hopper, is delivered in cracking still by helical pipe;
(3) cracking still rotary steering advances cracking: the material grain entering in cracking still rotates and slowly pushes to discharge port by the turning vane in cracking still with cracking still, and in propelling movement process, the burner hearth at cracking still place constantly heats;
(4) deslagging: the slag ash after cracking enters Residue extraction pipeline and discharges through Starlike valve;
(5) methyl methacrylate reclaims: the gas after cracking is delivered in water cooling plant and is carried out preliminary condensation process by conduit, and the methyl methacrylate of generation is recycled in hold-up vessel; Gas after preliminary condensation process enters cryogenic unit, carries out time condensation processing, and methyl methacrylate after treatment is recycled in hold-up vessel;
(6) off gas treatment: carry out off gas treatment by emission-control equipment through time condensation gas after treatment;
(7) waste gas that meets emission standard is discharged.
Further, in described step (2), material grain is preheated to processing.
Further, in described step (3), the Heating temperature of burner hearth is 700 degree-800 degree, and cracking temperature in the kettle is 500 degree-600 degree.
Further, in described step (6), the waste gas processing method adopting is light catalytic treatment method.
The present invention compared with prior art, has the following advantages and effect: 1, improve raw material lysis efficiency and selectivity, improve product recovery rate, reduce energy consumption, reduce pollutant emission; 2, realize the waste gas producing in process is focused on and discharged, to reach the basic goal of pollution treatment; 3, increase the continuity of technological operation and the stopping property of complete assembly, reduce the intermediate transfer step of product stream between each reaction unit and tripping device, improve the collection effciency to product, reduce the discharge of volatile organic matter, the requirement of producing to meet modern industry; 4, not only can improve lysis efficiency, reduce cracking temperature, reduce by product generation with become the quantity of slag, also can realize the serialization of operation; 5, safe.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is process flow diagram of the present invention.
In accompanying drawing: 1 is feeding unit; 11 is loading hopper, and 12 is feed pipe, and 13 is motor, and 14 is spiral handspike, and 15 is electric heater; 21 is burner hearth, and 211 is rotating machine, and 212 is blast inlet, and 213 is air outlet, and 214 is thermometer, 22 is cracking still, and 221 is opening for feed, and 222 is turning vane, and 223 is discharge port, and 224 is pressure limiting valve, 225 is screw-blade, and 23 is slag discharging device, and 231 is Residue extraction pipeline, and 232 is Starlike valve; 31 is conduit, and 32 is first-stage condenser, and 33 is secondary condenser, and 34 is hold-up vessel, and 35 is compression refrigerator; 4 is photocatalysis treatment device.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment.
Referring to Fig. 1, the present embodiment comprises the feeding unit 1, cracker, condensing works and the emission-control equipment that connect successively.
Feeding unit 1 in the present embodiment comprises electric heater 15, loading hopper 11, feed pipe 12, motor 13 and spiral handspike 14, spiral handspike 14 and feed pipe 12 active links, and the spiral external diameter of spiral handspike 14 is slightly less than the internal diameter of feed pipe 12, motor 13 is controlled spiral handspike 14 and is rotated, and spiral handspike 14 pushes to material grain in cracker gradually from loading hopper 11 ends; Electric heater 15 is arranged at the outside surface of feed pipe 12, before material grain pushes to cracker, adopts this electric heater 15 to carry out preheating, makes material grain softening, increases the stopping property of feed pipe 12.
Cracker in the present embodiment comprises burner hearth 21, rotating machine 211, cracking still 22, pressure limiting valve 224 and slag discharging device 23, rotating machine 211 is controlled cracking still 22 and is rotated in burner hearth 21, burner hearth 21 is provided with blast inlet 212 and air outlet 213, blast inlet 212 is located at the lower end of opening for feed 221, and air outlet 213 is located at the upper end of discharge port 223; Pressure limiting valve 224 is controlled the pressure in cracking still 22, is arranged at opening for feed 221 upper end positions of cracking still 22, is arranged at this position, place and can effectively prevents that material grain from passing through a cracking slag ash after treatment and blocking this pressure limiting valve 224, improves security; Cracking still 22 comprises opening for feed 221, turning vane 222 and discharge port 223; Opening for feed 221 is flexibly connected with feed pipe 12, and adopts asbestos twine to carry out encapsulation process in junction; Turning vane 222 is arranged at cracking still 22 inside, and is fixed into and is integrated with cracking still 22, and this cracking still 22 can be by material from opening for feed 221 spiral pushings to discharge port 223; Be fixedly connected with screw-blade 225 in discharge port 223 inside, this screw-blade 225 can be released discharge port 223 by slag ash, prevents that lime-ash from stopping up at discharge port 223 places; Burner hearth 21 is provided with thermometer 214, and this thermometer 214 is arranged at discharge port 223 places of cracking still 22, can monitor the temperature at discharge port 223 places, further infers that the cracking of cracking still 22 completes effect; Slag discharging device 23 comprises Residue extraction pipeline 231 and Starlike valve 232, and discharge port 223 is flexibly connected with Residue extraction pipeline 231, and adopts asbestos twine to carry out encapsulation process in junction, and Residue extraction pipeline 231 is connected with Starlike valve 232; In the present embodiment, adopt electric heater 15 to carry out preheating to feed pipe 12, and adopt asbestos twine to seal, adopt Starlike valve 232 to carry out deslagging, can prevent that the pressure in cracker from leaking.Blast inlet 212 and air outlet 213 adopt this kind of mode to arrange, can make the Heating temperature of burner hearth 21 lower in opening for feed 221 place's temperature, and go out at discharge port 223 effect that Heating temperature is higher, the material grain in cracking still 22 is progressively heated, to improve lytic effect.
Condensing works in the present embodiment is connected with cracker by conduit 31, and conduit 31 runs through Residue extraction pipeline 231, screw-blade 225 stretches in discharge port 223, and conduit 31 is flexibly connected with screw-blade 225, adopts and is welded and fixed with Residue extraction pipeline 231 junctions; Condensing works comprises water cooling plant, hold-up vessel 34 and cryogenic unit, and conduit 31, water cooling plant, hold-up vessel 34, cryogenic unit connect successively, the lower end of hold-up vessel 34 settings and water cooling plant and cryogenic unit.Conduit 31 is being arranged to " n " type bending with condensing works junction, prevents from flowing backwards through water cooling plant methyl methacrylate after treatment.In the present embodiment, water cooling plant is made up of first-stage condenser 32 and secondary condenser 33, first-stage condenser 32 is connected with conduit 31, the lower end that secondary condenser 33 is arranged at first-stage condenser 32 is connected with it, first-stage condenser 32 and secondary condenser 33 intake direction all with the interior exhaust flow of conduit 31 to contrary.
Emission-control equipment in the present embodiment is connected with cryogenic unit.Emission-control equipment in the present embodiment adopts photocatalysis treatment device 4, and this photocatalysis treatment device 4 comprises heat exchanger, photocatalytic region, ozone oxidation district and reduction zone, connects successively.
Referring to Fig. 2, the cracking technology flow process in the present embodiment is as follows:
(1) waste and old organic glass processing: synthetic glass scrap stock, clout and old waste material are carried out to fragmentation, and the material grain of the synthetic glass obtaining is for subsequent use.
(2) screw conveying feeding: motor 13 is controlled feed pipe 12 and rotated, material grain enters in feed pipe 12 by loading hopper 11, is delivered in cracking still 22 by helical pipe; By the electric heater 15 of feed pipe 12 outside surface settings, material grain is carried out to thermal pretreatment in this step, pellet is through thermal pretreatment post softening, in the situation that spiral handspike 14 advances, feed pipe 12 is sealed, ensure can reach certain pressure in cracking still 22.
(3) cracking still 22 rotary steerings advance cracking: the material grain entering in cracking still 22 rotates by the turning vane 222 in cracking still 22 and slowly pushes to discharge port 223 with cracking still 22, and in propelling movement process, the burner hearth 21 at cracking still 22 places constantly heats; Cracking still 22 length in the present embodiment are 7m, and diameter is 2m, control cracking still 22 rotate by rotating machine 211, and speed control is 0.3m/min-0.4m/min in the rotation progress of turning vane 222; Burner hearth 21 can adopt the type of heating such as coal, coke, Sweet natural gas, electrically heated, the temperature of burner hearth 21 is controlled at 700 degree left and right, degree-800, and then the temperature that makes cracking still 22 opening for feeds 221 is controlled at 500 degree left and right, the temperature of discharge port 223 is controlled at 600 degree left and right, detect through experiment, adopting the slag ash under this condition control is innoxious mineral powder, can make landfill disposal or the use of paving the way.
(4) deslagging: the slag ash after cracking enters Residue extraction pipeline 231 and discharges through Starlike valve 232; Utilize Starlike valve 232 deslagginves can effectively prevent that the pressure in cracking still 22 from leaking.
(5) methyl methacrylate reclaims: the gas after cracking is delivered in water cooling plant and is carried out preliminary condensation process by conduit 31, and the methyl methacrylate of generation is recycled in hold-up vessel 34; This water cooling plant is made up of first-stage condenser 32 and secondary condenser 33, is controlled at 40 degree left and right through first-stage condenser 32 gas temperature after treatment, is controlled at 20 degree left and right through secondary condenser 33 gas temperature after treatment; Enter cryogenic unit through secondary condenser 33 gas after treatment, carry out time condensation processing, this cryogenic unit adopts compression refrigerator 35, and these compression refrigerator 35 freezing temps are controlled at sub-zero zero, and methyl methacrylate after treatment is recycled in hold-up vessel 34.
(6) off gas treatment: carry out off gas treatment by emission-control equipment through time condensation gas after treatment; What this off gas treatment adopted is light catalytic treatment method, this waste gas is successively through the processing of over-heat-exchanger, photocatalytic region, ozone oxidation district and reduction zone, specific works principle has been described in detail and is open in the Chinese patent application title method of waste gas " photocatalytic ozonation remove ", number of patent application be the patent application of " 201310513873.8 ", detailed description no longer in the application.
(7) waste gas that meets emission standard is discharged; One time lytic cycle completes.Lytic cycle in the present embodiment is about 6 hours.According to the mode of working continuously, within one day, can make the continuous cracking in 4 cycles, the cracking of material grain completely, fully, has improved greatly lysis efficiency in the situation that ensureing safe operation.
Although the present invention with embodiment openly as above; but it is not in order to limit protection scope of the present invention; any technician who is familiar with this technology, not departing from change and the retouching done in the spirit and scope of the present invention, all should belong to protection scope of the present invention.
Claims (10)
1. a waste and old organic glass rotation spiral shell formula advances continuous cracking equipment, comprise the feeding unit, cracker, condensing works and the emission-control equipment that connect successively, described feeding unit comprises loading hopper, feed pipe, motor and spiral handspike, and material is pushed to cracker by described electric machine control spiral handspike; Described cracker comprises burner hearth, rotating machine and cracking still, and described rotating machine control cracking still rotates in burner hearth, and described burner hearth is provided with blast inlet and air outlet; It is characterized in that: described cracker also comprises pressure limiting valve and slag discharging device the pressure in described pressure limiting valve control cracking still; Described cracking still comprises opening for feed, turning vane and discharge port; Described opening for feed is flexibly connected with described feed pipe; Described turning vane is fixedly installed on described cracking still inside, will expect from opening for feed spiral pushing to discharge port; Described burner hearth is provided with thermometer; Described slag discharging device comprises Residue extraction pipeline and Starlike valve, and described discharge port is flexibly connected with described Residue extraction pipeline, and described Residue extraction pipeline is connected with described Starlike valve; Described condensing works is connected with cracker by conduit, described conduit runs through Residue extraction pipeline and stretches in discharge port, described condensing works comprises water cooling plant, hold-up vessel and cryogenic unit, described conduit, water cooling plant, hold-up vessel, cryogenic unit connect successively, the lower end of described hold-up vessel setting and described water cooling plant and cryogenic unit; Described emission-control equipment is connected with described cryogenic unit.
2. waste and old organic glass rotation spiral shell formula according to claim 1 advances continuous cracking equipment, it is characterized in that: described opening for feed and feed pipe junction and described discharge port and Residue extraction pipeline junction are equipped with tightness system.
3. waste and old organic glass rotation spiral shell formula according to claim 2 advances continuous cracking equipment, it is characterized in that: described feeding unit also comprises electric heater, and described electric heater is arranged at the outside surface of described feed pipe.
4. waste and old organic glass rotation spiral shell formula according to claim 1 advances continuous cracking equipment, it is characterized in that: described blast inlet is located at the lower end of described opening for feed, described air outlet is located at the upper end of described discharge port, described thermometer is arranged at described discharge port place, and described pressure limiting valve is arranged at the opening for feed upper end position of cracking still.
5. waste and old organic glass rotation spiral shell formula according to claim 1 advances continuous cracking equipment, it is characterized in that: described conduit is being arranged to " n " type bending with condensing works junction, described cryogenic unit adopts compression refrigerator, and described emission-control equipment adopts photocatalysis treatment device.
6. waste and old organic glass rotation spiral shell formula according to claim 5 advances continuous cracking equipment, it is characterized in that: described water cooling plant comprises first-stage condenser and secondary condenser, described first-stage condenser is connected with conduit, the lower end that secondary condenser is arranged at first-stage condenser is connected with it, described first-stage condenser and secondary condenser water inlet direction all with the interior exhaust flow of conduit to contrary.
7. waste and old organic glass rotation spiral shell formula advances a continuous cracking method, it is characterized in that: technical process is as follows:
(1) waste and old organic glass processing: synthetic glass scrap stock, clout and old waste material are carried out to fragmentation, and the material grain that obtains synthetic glass is for subsequent use;
(2) screw conveying feeding: the rotation of electric machine control feed pipe, described material grain enters in feed pipe by loading hopper, is delivered in cracking still by helical pipe;
(3) cracking still rotary steering advances cracking: the material grain entering in cracking still rotates and slowly pushes to discharge port by the turning vane in cracking still with cracking still, and in propelling movement process, the burner hearth at cracking still place constantly heats;
(4) deslagging: the slag ash after cracking enters Residue extraction pipeline and discharges through Starlike valve;
(5) methyl methacrylate reclaims: the gas after cracking is delivered in water cooling plant and is carried out preliminary condensation process by conduit, and the methyl methacrylate of generation is recycled in hold-up vessel; Gas after preliminary condensation process enters cryogenic unit, carries out time condensation processing, and methyl methacrylate after treatment is recycled in hold-up vessel;
(6) off gas treatment: carry out off gas treatment by emission-control equipment through time condensation gas after treatment;
(7) waste gas that meets emission standard is discharged.
8. waste and old organic glass rotation spiral shell formula according to claim 7 advances continuous cracking method, it is characterized in that: in described step (2), material grain is preheated to processing.
9. waste and old organic glass rotation spiral shell formula according to claim 7 advances continuous cracking method, it is characterized in that: in described step (3), the Heating temperature of burner hearth is 700 degree-800 degree, and cracking temperature in the kettle is 500 degree-600 degree.
10. waste and old organic glass rotation spiral shell formula according to claim 7 advances continuous cracking method, it is characterized in that: in described step (6), the waste gas processing method adopting is light catalytic treatment method.
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| CN201410501332.8A CN104211984B (en) | 2014-09-26 | 2014-09-26 | Rotary spiral waste organic glass propelling and continuous splitting decomposition method and device |
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| CN105435920A (en) * | 2016-01-05 | 2016-03-30 | 湖州丰瑞塑化有限公司 | Waste organic glass crushing device |
| CN105435940A (en) * | 2016-01-05 | 2016-03-30 | 湖州丰瑞塑化有限公司 | Plastic cutting device |
| CN105435896A (en) * | 2016-01-05 | 2016-03-30 | 湖州丰瑞塑化有限公司 | Organic glass crushing and splitting equipment |
| CN105461556A (en) * | 2016-01-05 | 2016-04-06 | 湖州丰瑞塑化有限公司 | Recycling device of waste organic glass |
| CN105504340A (en) * | 2016-01-05 | 2016-04-20 | 湖州丰瑞塑化有限公司 | Cracking device for organic glass |
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| CN109230297A (en) * | 2018-08-23 | 2019-01-18 | 瑞昌荣联环保科技有限公司 | A kind of automatic valve type pyrolysis furnace continuous feeding device |
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| CN105619644A (en) * | 2016-01-05 | 2016-06-01 | 湖州丰瑞塑化有限公司 | Recycling device for organic glass |
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| CN105504340A (en) * | 2016-01-05 | 2016-04-20 | 湖州丰瑞塑化有限公司 | Cracking device for organic glass |
| CN105619644B (en) * | 2016-01-05 | 2018-06-26 | 青岛耀恩玻璃制品有限公司 | A kind of recycling equipment of organic glass |
| CN106009033A (en) * | 2016-07-01 | 2016-10-12 | 李剑辉 | Environment-friendly continuous cracking device of waste organic glass and plastic |
| CN109230297A (en) * | 2018-08-23 | 2019-01-18 | 瑞昌荣联环保科技有限公司 | A kind of automatic valve type pyrolysis furnace continuous feeding device |
| CN109648740A (en) * | 2018-12-19 | 2019-04-19 | 霍振辉 | A kind of heating system of MMA monomer production |
| CN109648740B (en) * | 2018-12-19 | 2024-05-14 | 霍振辉 | Heating system for MMA monomer production is used |
| CN113200854A (en) * | 2021-05-08 | 2021-08-03 | 中石油吉林化工工程有限公司 | Cracking recovery process for producing polymethyl methacrylate |
| CN114634413A (en) * | 2022-04-02 | 2022-06-17 | 北京化工大学 | Method and reaction device for catalytic depolymerization of polymethyl methacrylate into monomer |
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| CN104211984B (en) | 2017-01-25 |
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Effective date of registration: 20191212 Address after: 311300 No. 320, building 7, Jiangnan shopping mall, Jincheng Street, Lin'an City, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Lin'an Qingyun environmental protection equipment Co., Ltd Address before: Hangzhou City, Zhejiang province 311399 Ling'an City Jincheng Street South Mall Building 7 No. 320 Patentee before: Linan Qing Yun environmental protection equipment Co., Ltd |