CN202028605U - Device for recovering freon from hard foaming thermal insulating materials of discarded refrigerator and refrigerating cabinet - Google Patents
Device for recovering freon from hard foaming thermal insulating materials of discarded refrigerator and refrigerating cabinet Download PDFInfo
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- CN202028605U CN202028605U CN2011201008144U CN201120100814U CN202028605U CN 202028605 U CN202028605 U CN 202028605U CN 2011201008144 U CN2011201008144 U CN 2011201008144U CN 201120100814 U CN201120100814 U CN 201120100814U CN 202028605 U CN202028605 U CN 202028605U
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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
- Y02W30/20—Waste processing or separation
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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
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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Abstract
The utility model discloses a device for recovering freon from hard foaming thermal insulating materials of a discarded refrigerator and a refrigerating cabinet. One end of a spiral feeder (7) is connected with a feeding hopper (4), and the other end of the spiral feeder (7) is connected with a defluorination reactor (6); the spiral feeder (7) is provided with a first heating unit (5); the defluorination reactor (6) is provided with a second heating unit (8); an opening a of a first three-way valve (9) is connected with the defluorination reactor (6), and an opening b of the first three-way valve (9) is connected with an inlet of a condensation recoverer (11); an outlet of the condensation recoverer (11) is connected with an inlet of an active carbon absorption box (12); an opening d of a second three-way valve (15) is connected with an outlet of the active carbon absorption box (12), and an opening e of the second three-way valve (15) is connected with an inlet of a vacuum pump (14); an opening c of the first three-way valve (9) is connected with an opening f of the second three-way valve (15); the active carbon absorption box (12) is provided with a third heating unit (13); and the condensation recoverer (11) is connected with a vacuum pressure gauge (10). By using the device, freon can be separated from the hard foaming thermal insulating materials of the discarded refrigerator and the refrigerating cabinet and is collected and recovered.
Description
Technical field
The utility model relates to a kind of device that reclaims freon, particularly relates to a kind of device that separates recovery freon from the waste refrigerators refrigerator-freezer hard bubbles insulation material.
Background technology
The eighties in 20th century middle and late, a large amount of electric equipment products enter China family, calculate by the service lives in 10～15 years, since household electrical appliance in 2003 to eliminating the peak period of scrapping.Interrelated data shows that the social recoverable amount of China's refrigerator surpasses 1.5 hundred million, and on average more than 4,000,000, the refrigerator ice cabinet of scrapping contains environmentally harmful materials such as freon to annual learies, need deal carefully with.Freon in the refrigerator mainly is included in compressor and the hard polyurethane foam insulation material, finds that after deliberation contain freon 165g in the compressor, the insulation material that hard bubbles contains freon 550g.At present to the recycling of cold-producing medium in the compressor with to handle the research of disposing more, harmless treatment to the insulation material that hard bubbles is studied but seldom, its basic reason is exactly that the hard bubble recycling and handling of freon in the insulation material is disposed complicated, cost is also higher, for the consideration of economic interests, all avoiding this social tender subject.Contain a large amount of insulation materials that hard bubbles in waste refrigerators, the refrigerator-freezer, wherein just contain 15～20% blowing agent freon (CFC-11), the disposal that the waste refrigerators refrigerator-freezer is disassembled the insulation material that hard bubbles in a large number of handling the back generation will be the recent unavoidable environmental problem of China.
At present, mainly be to adopt to burn to handle the insulation material that hard bubbles both at home and abroad with broken method.Adopt the burning disposal insulation material that hard bubbles, be meant that insulation material carries out high temperature incineration at 850～1000 ℃ after coarse crushing, primary product is hydrogen chloride, hydrogen fluoride, carbon dioxide, nitrogen oxide, water vapour etc., and hydrogen chloride wherein and hydrogen fluoride mainly are to be decomposed by freon to generate.Hydrogen chloride and hydrogen fluoride are highly acid gas, and equipment is had the deep-etching effect, and in addition, insulation material also can produce poisonous and harmful substance when burning, and need to drop into high plant maintenance operating cost and waste gas pollution control and treatment expense.The break process insulation material that hard bubbles is a kind of method of generally using, because the refrigerator ice cabinet casing is disassembled difficulty, generally in airtight space, sorting is carried out in the whole fragmentation of casing again, realize that metal separates with the insulation material that hard bubbles, the insulation material part of hard bubbling in shattering process freon can discharge, and carries out simple adsorption treatment or directly enters atmosphere through behind the negative pressure extracting.
In fact, relevant research (list of references [1] Yang Yong etc., useless refrigerator insulation material low temperature pyrogenation and gas composition analysis; [2] DR J S, Estimating CFC releases fromcutting of fridges) show: the insulation material that hard bubbles in the refrigerator has 60%～70% freon to exist with the gas phase form, 30%～40% exists with liquid form, dissolves in part and is difficult to discharge in shattering process.It obviously is improper adopting pure breaking method to handle the insulation material that hard bubbles, and the freon that is adsorbed on the insulation material that hard bubbles can slowly release and damage the ozone layer, and 1 freon molecule can destroy 100,000 ozone molecules at least.
Therefore; the processing of the insulation material that hard bubbles in the refrigeration electric equipment products such as useless refrigerator ice cabinet should be considered economic benefit and environmental protection comprehensively; prior art needs further to improve; also need to develop new processing method and equipment simultaneously, to seek the extensive resource technology of handling that is fit to of low cost, high-efficiency environment friendly.
The utility model content
Technical problem to be solved in the utility model provides a kind ofly thoroughly isolates freon from the waste refrigerators refrigerator-freezer hard bubbles insulation material, and is collected the device that reclaims freon from the waste refrigerators refrigerator-freezer hard bubbles insulation material that reclaims.
In order to solve above-mentioned technical problem, the device that from the waste refrigerators refrigerator-freezer hard bubbles insulation material, reclaims freon that the utility model provides, feeding screw one end is connected with material bin, the other end is connected with the defluorination reaction device, described feeding screw is provided with heating unit No. one, described defluorination reaction device is provided with heating unit No. two, the a mouth of a triple valve is connected with described defluorination reaction device, the b mouth of a described triple valve is connected with the inlet that machine is reclaimed in described condensation, the outlet that machine is reclaimed in described condensation is connected with the inlet of charcoal absorption case, the d mouth of No. two triple valves is connected with the outlet of described charcoal absorption case, the e mouth of described No. two triple valves is connected with the inlet of vavuum pump, the c mouth of a described triple valve is connected with the f mouth of described No. two triple valves, described charcoal absorption case is provided with heating unit No. three, and described condensation recovery machine is connected with pressure vacuum gauge.
Described feeding screw be provided with movable sealing sleeve and by belt by motor-driven.
Adopt the device that reclaims freon from the waste refrigerators refrigerator-freezer hard bubbles insulation material of technique scheme, its operation principle is sketched in following:
In the hopper of the utility model with the insulation material embedded device that hard bubbles in the waste refrigerators refrigerator-freezer, connect entire equipment, make system be in vacuum state, open motor, slowly send in the defluorination reaction device with the feeding screw insulation material that will hard bubble, in this process, feeding screw and defluorination reaction device are heated.In feeding screw feeding process, hard bubbling in the feeding screw, insulation material is squeezed and abrasive action, freon is overflowed from the abscess of the insulation material that hard bubbles He in the foam beads solid, and good cooperative effect has been played in the heating of feeding screw, and freon is separated fast; In addition, carrying out the post bake insulation in the defluorination reaction device makes freon thoroughly separate from the insulation material that hard bubbles; Whole system is carried out under vacuum condition, and vacuum force can cause freon to separate from the insulation material that hard bubbles rapidly, realizes the efficient separation of freon.The freon that separates from the insulation material that hard bubbles enters condensation recovery machine and obtains condensation and reclaim, and the minute quantity Freon gas that condensation gets off that is not able to do in time enters the charcoal absorption case, is clean gas after the charcoal absorption, enters atmosphere through vavuum pump.Use in order to make active carbon repeat regeneration, the charcoal absorption case is heated, remove the Freon gas that is adsorbed in wherein, gas enters once more and obtains condensation liquefaction in the condensation recovery machine and reclaim, thus the thorough separation and the recovery of freon in the insulation material of having realized hard bubbling.
The beneficial effects of the utility model are:
The utility model will wrap up and be adsorbed in hard bubble freon in the insulation material of waste refrigerators refrigerator-freezer and thoroughly separate and reclaim, avoided the high energy consumption and the problem of environmental pollution that produce owing to burning disposal, reduced prior art and adopted simple broken method to handle the freon discharging that the insulation material that hard bubbles causes; Environmental benefit and economic benefit are big; Whole process is carried out in vacuum systems, does not have secondary pollution; Technology and device simple possible, the activity duration is short, and condition is easy to control, and security is good; Combine the separation and the recovery of freon in the efficient insulation material of realizing hard bubbling by extruding and abrasive action, heat effect and vacuum draw effect.
With the refrigerator is example, and the social recoverable amount of China's refrigerator surpasses 1.5 hundred million, and annual learies is on average more than 4,000,000.Calculate with every refrigerator 6kg insulation material that hard bubbles, the insulation material that hard bubbles that China every year (in 4,000,000) needs to handle is up to 24000 tons, and the blowing agent freon that wherein contains is up to more than 2000 tons.Contain about 550g freon in the insulation material that hard bubbles of a refrigerator, if release can damage the ozone layer fully, the greenhouse effects that cause are equivalent to 2200kgCO
2Burst size, calculating learns, uses the annual insulation material that hard bubbles of handling 4,400,000 waste refrigerators of the utility model method, is equivalent to discharge less every year 8800000 tons of CO
2, reach the effect of reduction of discharging.
In sum, the utility model is a kind ofly thoroughly to isolate freon from the waste refrigerators refrigerator-freezer hard bubbles insulation material, and is collected the device that reclaims freon from the waste refrigerators refrigerator-freezer hard bubbles insulation material that reclaims.
Description of drawings
Fig. 1 separate to reclaim the device schematic diagram of freon for the waste refrigerators refrigerator-freezer insulation material that hard bubbles.
Among the figure: 1. motor, 2. belt, 3. movable sealing sleeve, 4. material bin, 5. a heating unit, 6. defluorination reaction device, 7. feeding screw, 8. No. two heating units, 9. a triple valve, 10. pressure vacuum gauge, 11. machine, 12. charcoal absorption casees, 13. No. three heating units are reclaimed in condensation, 14. vavuum pump, 15. No. two triple valves.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, the device of the method for freon is reclaimed in realization from the waste refrigerators refrigerator-freezer hard bubbles insulation material, feeding screw 7 is provided with movable sealing sleeve 3 and is driven by motor 1 by belt 2, feeding screw 7 one ends are connected with material bin 4, the other end is connected with defluorination reaction device 6, feeding screw 7 is provided with heating unit 5 No. one, defluorination reaction device 6 is provided with heating unit 8 No. two, the a mouth of a triple valve 9 is connected with defluorination reaction device 6, the b mouth of a triple valve 9 is connected with the inlet that machine 11 is reclaimed in condensation, the outlet that machine 11 is reclaimed in condensation is connected with the inlet of charcoal absorption case 12, the d mouth of No. two triple valves 15 is connected with the outlet of charcoal absorption case 12, the e mouth of No. two triple valves 15 is connected with the inlet of vavuum pump 14, the c mouth of a triple valve 9 is connected with the f mouth of No. two triple valves 15, charcoal absorption case 12 is provided with heating unit 13 No. three, and condensation is reclaimed machine 11 and is connected with pressure vacuum gauge 10.
Embodiment 1:
1, (particle size range is 2～5mm) to insert in the hopper 4 with the granular insulation material that hard bubbles, connect entire equipment, a triple valve 9 is communicated with ab and closes c, and No. two triple valves 15 are opened de and closed f, open vavuum pump 14, make system be in vacuum state, system pressure 30Pa opens a heating unit 5 and 8 pairs of supplied materials of No. two heating units heat, and heating-up temperature is 100 ℃, open motor 1, slowly send in the defluorination reaction device 6 with feeding screw 7 insulation material that will hard bubble;
2, supplied materials is incubated processing in defluorination reaction device 6, and holding temperature is 100, and temperature retention time is 30min;
3, condensation being set, to reclaim the condensation temperature of machine 11 be 20 ℃, and the gas after the condensation recycling filters after vavuum pump 14 is sent into atmosphere through charcoal absorption case 12;
4, disable motor 1, heating unit 5, No. two heating units 8, a triple valve 9 is communicated with bc closes a, No. two triple valves 15 are opened ef and are closed d, open 13 pairs of charcoal absorption casees of No. 3 heating units 12 and carry out heat treated, heating-up temperature is 100, temperature retention time is 0.5h, is adsorbed on a small quantity to reenter condensation after freon in the active carbon of charcoal absorption case 12 is overflowed and reclaim machine 11 and reclaim, and sends into atmosphere through vavuum pump 14.
Embodiment 2:
1, (particle size range is 2～5mm) to insert in the hopper 4 with the granular insulation material that hard bubbles, connect entire equipment, a triple valve 9 is communicated with ab and closes c, and No. two triple valves 11 are opened de and closed f, open vavuum pump 14, make system be in vacuum state, system pressure 20Pa opens a heating unit 5 and 8 pairs of supplied materials of No. two heating units heat, and heating-up temperature is 120 ℃, open motor 1, slowly send in the defluorination reaction device 6 with feeding screw 7 insulation material that will hard bubble;
2, supplied materials is incubated processing in defluorination reaction device 6, and holding temperature is 120 ℃, and temperature retention time is 1h;
3, condensation being set, to reclaim the condensation temperature of machine 11 be 10 ℃, and the gas after the condensation recycling filters after vavuum pump 14 is sent into atmosphere through charcoal absorption case 12;
4, disable motor 1, a heating unit, No. two heating units 8, a triple valve 9 is communicated with bc closes a, No. two triple valves 11 are opened ef and are closed d, open 13 pairs of charcoal absorption casees of No. 3 heating units 12 and carry out heat treated, heating-up temperature is 120 ℃, temperature retention time is 0.5h, is adsorbed on a small quantity to reenter condensation after freon in the active carbon of charcoal absorption case 12 is overflowed and reclaim machine 11 and reclaim, and sends into atmosphere through vavuum pump 14.
Embodiment 3:
1, (particle size range is 2～5mm) to insert in the hopper 4 with the granular insulation material that hard bubbles, connect entire equipment, a triple valve 9 is communicated with ab and closes c, and No. two triple valves 11 are opened de and closed f, open vavuum pump 14, make system be in vacuum state, system pressure 10Pa opens a heating unit 5 and 8 pairs of supplied materials of No. two heating units heat, and heating-up temperature is 140 ℃, open motor 1, slowly send in the defluorination reaction device 6 with feeding screw 7 insulation material that will hard bubble;
2, supplied materials is incubated processing in defluorination reaction device 6, and holding temperature is 140, and temperature retention time is 1.5h;
3, condensation being set, to reclaim the condensation temperature of machine 11 be 0 ℃, and the gas after the condensation recycling filters after vavuum pump 14 is sent into atmosphere through charcoal absorption case 12;
4, disable motor 1, heating unit 5, No. two heating units 8, a triple valve 9 is communicated with bc closes a, No. two triple valves 11 are opened ef and are closed d, open 13 pairs of charcoal absorption casees of No. 3 heating units 12 and carry out heat treated, heating-up temperature is 140 ℃, temperature retention time is 0.5h, is adsorbed on a small quantity to reenter condensation after freon in the active carbon of charcoal absorption case 12 is overflowed and reclaim machine 11 and reclaim, and sends into atmosphere through vavuum pump 14.
Embodiment 4:
1, (particle size range is 2～5mm) to insert in the hopper 4 with the granular insulation material that hard bubbles, connect entire equipment, a triple valve 9 is communicated with ab and closes c, and No. two triple valves 1 are opened de and closed f, open vavuum pump 14, make system be in vacuum state, system pressure 5Pa opens a heating unit 5 and 8 pairs of supplied materials of No. two heating units heat, and heating-up temperature is 150 ℃, open motor 1, slowly send in the defluorination reaction device 6 with feeding screw 7 insulation material that will hard bubble;
2, supplied materials is incubated processing in defluorination reaction device 6, and holding temperature is 150 ℃, and temperature retention time is 2h;
3, condensation is set and reclaims the condensation temperature of machine 11 and be-10 ℃, the gas after the condensation recycling through 12 filtrations of charcoal absorption case after vavuum pump 14 is sent into atmosphere;
4, disable motor 1, heating unit 5, No. two heating units 8, a triple valve 9 is communicated with bc closes a, No. two triple valves 15 are opened ef and are closed d, open 13 pairs of charcoal absorption casees of No. 3 heating units 12 and carry out heat treated, heating-up temperature is 150 ℃, temperature retention time is 0.5h, is adsorbed on a small quantity to reenter condensation after freon in the active carbon of charcoal absorption case 12 is overflowed and reclaim machine 11 and reclaim, and sends into atmosphere through vavuum pump 14.
Embodiment 5:
1, (particle size range is 2～5mm) to insert in the hopper 4 with the granular insulation material that hard bubbles, connect entire equipment, a triple valve 9 is communicated with ab and closes c, and No. two triple valves 15 are opened de and closed f, open vavuum pump 14, make system be in vacuum state, system pressure 5Pa opens a heating unit 5 and 8 pairs of supplied materials of No. two heating units heat, and heating-up temperature is 155 ℃, open motor 1, slowly send in the defluorination reaction device 6 with feeding screw 7 insulation material that will hard bubble;
2, supplied materials is incubated processing in defluorination reaction device 6, and holding temperature is 155 ℃, and temperature retention time is 2h;
3, condensation is set and reclaims the condensation temperature of machine 11 and be-20 ℃, the gas after the condensation recycling through 12 filtrations of charcoal absorption case after vavuum pump 14 is sent into atmosphere;
4, disable motor 1, heating unit 5, No. two heating units 8, a triple valve 9 is communicated with bc closes a, No. two triple valves 15 are opened ef and are closed d, open 13 pairs of charcoal absorption casees of No. 3 heating units 12 and carry out heat treated, heating-up temperature is 155 ℃, temperature retention time is 1h, is adsorbed on a small quantity to reenter condensation after freon in the active carbon of charcoal absorption case 12 is overflowed and reclaim machine 11 and reclaim, and sends into atmosphere through vavuum pump 14.
Embodiment 6:
1, (particle size range is 2～5mm) to insert in the hopper 4 with the granular insulation material that hard bubbles, connect entire equipment, a triple valve 9 is communicated with ab and closes c, and No. two triple valves 15 are opened de and closed f, open vavuum pump 14, make system be in vacuum state, system pressure 5Pa opens a heating unit 5 and 8 pairs of supplied materials of No. two heating units heat, and heating-up temperature is 160 ℃, open motor 1, slowly send in the defluorination reaction device 6 with feeding screw 7 insulation material that will hard bubble;
2, supplied materials is incubated processing in defluorination reaction device 6, and holding temperature is 160 ℃, and temperature retention time is 1h;
3, condensation being set, to reclaim the condensation temperature of machine 11 be 0 ℃, and the gas after the condensation recycling filters after vavuum pump 14 is sent into atmosphere through charcoal absorption case 12;
4, disable motor 1, heating unit 5, No. two heating units 8, a triple valve 9 is communicated with bc closes a, No. two triple valves 15 are opened ef and are closed d, open 13 pairs of charcoal absorption casees of No. 3 heating units 12 and carry out heat treated, heating-up temperature is 160 ℃, temperature retention time is 0.5h, is adsorbed on a small quantity to reenter condensation after freon in the active carbon of charcoal absorption case 12 is overflowed and reclaim machine 11 and reclaim, and sends into atmosphere through vavuum pump 14.
Claims (2)
1. one kind hard bubbles from the waste refrigerators refrigerator-freezer and to reclaim the device of freon the insulation material, it is characterized in that: feeding screw (7) one ends are connected with material bin (4), the other end is connected with defluorination reaction device (6), described feeding screw (7) is provided with a heating unit (5), described defluorination reaction device (6) is provided with No. two heating units (8), the a mouth of a triple valve (9) is connected with described defluorination reaction device (6), the b mouth of a described triple valve (9) is connected with the inlet that machine (11) is reclaimed in described condensation, the outlet that machine (11) is reclaimed in described condensation is connected with the inlet of charcoal absorption case (12), the d mouth of No. two triple valves (15) is connected with the outlet of described charcoal absorption case (12), the e mouth of described No. two triple valves (15) is connected with the inlet of vavuum pump (14), the c mouth of a described triple valve (9) is connected with the f mouth of described No. two triple valves (15), described charcoal absorption case (12) is provided with No. three heating units (13), and described condensation is reclaimed machine (11) and is connected with pressure vacuum gauge (10).
2. according to the right right 1 described device that reclaims freon from the waste refrigerators refrigerator-freezer hard bubbles insulation material, it is characterized in that: described feeding screw (7) is provided with movable sealing sleeve (3) and is driven by motor (1) by belt (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201008144U CN202028605U (en) | 2011-04-08 | 2011-04-08 | Device for recovering freon from hard foaming thermal insulating materials of discarded refrigerator and refrigerating cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201008144U CN202028605U (en) | 2011-04-08 | 2011-04-08 | Device for recovering freon from hard foaming thermal insulating materials of discarded refrigerator and refrigerating cabinet |
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| CN202028605U true CN202028605U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201008144U Expired - Fee Related CN202028605U (en) | 2011-04-08 | 2011-04-08 | Device for recovering freon from hard foaming thermal insulating materials of discarded refrigerator and refrigerating cabinet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247970A (en) * | 2011-04-08 | 2011-11-23 | 凯天环保科技股份有限公司 | Method and device for recycling Freon from rigid foam insulating material of waste and old refrigerator and ice tank |
| CN106807723A (en) * | 2017-01-04 | 2017-06-09 | 长沙汇聚环境技术有限公司 | It is a kind of from waste refrigerators hard bubble insulation material in reclaim freon method |
| CN106824978A (en) * | 2017-01-04 | 2017-06-13 | 长沙汇聚环境技术有限公司 | It is a kind of from waste refrigerator hard bubble insulation material in separate and recover freon method |
-
2011
- 2011-04-08 CN CN2011201008144U patent/CN202028605U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247970A (en) * | 2011-04-08 | 2011-11-23 | 凯天环保科技股份有限公司 | Method and device for recycling Freon from rigid foam insulating material of waste and old refrigerator and ice tank |
| CN102247970B (en) * | 2011-04-08 | 2013-01-30 | 凯天环保科技股份有限公司 | Method and device for recycling Freon from rigid foam insulating material of waste and old refrigerator and ice tank |
| CN106807723A (en) * | 2017-01-04 | 2017-06-09 | 长沙汇聚环境技术有限公司 | It is a kind of from waste refrigerators hard bubble insulation material in reclaim freon method |
| CN106824978A (en) * | 2017-01-04 | 2017-06-13 | 长沙汇聚环境技术有限公司 | It is a kind of from waste refrigerator hard bubble insulation material in separate and recover freon method |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20111109 Termination date: 20140408 |