CN202410221U - Device for recovering and incinerating solvent and comprehensively utilizing energy in drying workshop on coating production line - Google Patents
Device for recovering and incinerating solvent and comprehensively utilizing energy in drying workshop on coating production line Download PDFInfo
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- CN202410221U CN202410221U CN2012200207003U CN201220020700U CN202410221U CN 202410221 U CN202410221 U CN 202410221U CN 2012200207003 U CN2012200207003 U CN 2012200207003U CN 201220020700 U CN201220020700 U CN 201220020700U CN 202410221 U CN202410221 U CN 202410221U
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a device for recovering and incinerating a solvent and comprehensively utilizing energy in a drying workshop on a coating production line. According to the device, waste gas in a drying chamber is purified in an adsorption recovering mode to recover the solvent, the adsorbed gas is introduced into heat accumulating type oxidation equipment to thoroughly remove residual organic ingredients, and heat generated in the removing process is fully utilized; and the treated waste gas is used as high-temperature gas of the drying chamber and introduced into the drying chamber after being mixed with air and low-concentration waste gas, and the aperture of a valve and the quantity of cold air and hot air which enter all drying sections are adjusted according to differences of various drying temperatures to ensure that temperatures of all the drying sections are stable. By the device, an adsorption and heat accumulation oxidation waste gas treatment mode is combined with the production line, so that the solvent and the energy can be recovered to the maximum extent; and the device is low in operation cost and energy consumption and high in heat utilization rate and is easy to operate.
Description
Technical field
The utility model relates to the device of solvent recovery, burned waste gas processing and the total energy approach in a kind of coating line oven dry workshop, belongs to organic waste-gas purification and total energy approach field.
Background technology
In the coating industry, the coating procedure of film need contain a large amount of organic solvents, and organic solvent is of a great variety, and harmful mostly, like toluene, xylenes, ethyl acetate, acetone, isopropyl alcohol etc.After coating process was accomplished, film was transported to drying chamber and dries.Produce a large amount of organic exhaust gas in the drying course, concentration is higher, and organic exhaust gas is taken out of drying chamber with the oven dry hot blast, enters in the atmosphere.Harm is as follows: one, producers' healthy generation is endangered lastingly; Two, the organic exhaust gas of discharging might produce blast, has potential safety hazard; Three, the discharging of organic exhaust gas can increase the weight of environmental pressure, damages the ozone layer; Four, a large amount of solvent consumptions can improve production cost.To above situation, comprehensively improve extremely urgent to the oven dry workshop of coating line.
At present; Btu utilization and exhaust-gas treatment to the oven dry workshop have following several kinds of modes: first kind is that the hot blast of drying chamber carries the discharging of organic solvent rear section, circulates the part hot blast emptying after treatment of discharging in the part; And, be supplemented to drying chamber by heat-conducting oil furnace or Steam Heating fresh air; Second kind is circulation in the hot blast partial discharge part, the portion gas of discharging behind high-temperature oxydation with the fresh air heat exchange, the part heat is provided, to reduce the consumption of heat-conducting oil furnace or steam, after-heat is still provided by original thermal source.This dual mode generally is that existing production line is transformed, and can only the two get one of which to the recovery and the Btu utilization of solvent, can not well reach doulbe-sides' victory energy-saving and cost-reducing and recover materials.
The utility model content
Based on above-mentioned technical problem, the utility model provides solvent recovery and the burning disposal and the total energy approach device in a kind of coating line oven dry workshop.
Its technical solution is:
Solvent recovery and the burning disposal and the total energy approach device in a kind of coating line oven dry workshop, it comprises drying system, waste gas adsorption system, solvent recovering system, burned waste gas system, air-makeup system, aiutage and connects pipeline; The outlet of drying system links to each other with the inlet of waste gas adsorption system or burned waste gas system; The outlet of waste gas adsorption system links to each other with inlet, aiutage and the inlet of burned waste gas system of solvent recovering system respectively; The outlet of burned waste gas system links to each other with the inlet of aiutage and air-makeup system respectively, and the outlet of air-makeup system links to each other with the inlet of drying system.
Further, drying system comprises drying chamber, at the two ends of drying chamber unreeling structure and rolling-up mechanism is set respectively; Waste gas adsorption system comprises absorber, and absorber links to each other with drying chamber, jet chimney and drying air fan respectively, and gas radiator is installed in being connected between drying chamber and absorber on the pipeline; Solvent recovering system comprises cool condenser and layering groove, and cool condenser links to each other with absorber, and the layering groove links to each other with condenser; The burned waste gas system comprises the heat accumulating type oxidation furnaces, and the inlet of heat accumulating type oxidation furnaces connects flame arrester for pipe, and flame arrester for pipe links to each other with drying chamber, absorber respectively; Air-makeup system comprises circulating fan, smoke filter and heat exchanger, and the outlet of heat accumulating type oxidation furnaces links to each other with circulating fan, smoke filter and heat exchanger successively, and heat exchanger links to each other with drying chamber.
Further; Drying chamber is made up of a plurality of oven dry sections; The oven dry section outlet that is positioned at the drying chamber upper reaches links to each other with the absorption fans entrance, and the outlet of absorption blower fan links to each other with gas radiator, flame arrester for pipe and aiutage respectively, and the oven dry section outlet that is positioned at the drying chamber downstream connects circulating fan.
Further, solvent recovering system also comprises wastewater trough and flux bath, and wastewater trough links to each other with the layering groove respectively with flux bath, and flux bath connects solvent tank through solvent pump; Layering groove, wastewater trough are communicated with the inlet that adsorbs blower fan through being connected pipeline respectively with flux bath.
Further, the burned waste gas system also comprises buner system, and buner system comprises combustion fan and burner, and combustion fan links to each other with burner, and burner links to each other with the heat accumulating type oxidation furnaces.
Further, air-makeup system also comprises mends wind blower fan and air cleaner, mends the wind blower fan and connects air cleaner, and air cleaner connects drying chamber.
The useful technique effect of the utility model is:
The utility model uses exhaust-gas treatment and the energy utilization that the mode of absorption, burning, heat exchange and the combination of mixed gas is dried the workshop with coating line to combine; High-concentration waste gas, low concentration gas are handled respectively, can the high efficiente callback solvent, can the residue organic principle in the waste gas be burned again; Play catharsis on the one hand; Make full use of the heat energy of organic principle on the other hand, reach effectively integrating of physical resources and energy resource, purification efficiency is high; Less energy consumption, and system architecture is flexible; In underrun, when the composition in the waste gas does not possess the benefit of recovery, can directly get into the burned waste gas system and burn, utilize its heat, the maximization optimization is utilized the efficient resource in the waste gas, has realized the double goal of economic benefit and social benefit.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described further:
Fig. 1 is the structural representation sketch of the utility model.
In Fig. 1, the anti-roll mechanism of 1-, the 2-drying chamber, 201,202,203,204,205-dry the section, 3-rolling-up mechanism, 4-aiutage; 5-adsorbs blower fan, 6-gas radiator, 7-absorber, 8-drying air fan, 9-condenser, 10-layering groove; The 11-wastewater trough, 12-flux bath, 13-solvent pump, 14-solvent tank, 15-flame arrester for pipe, 16-heat accumulating type oxidation furnaces; The 17-purging motor, 18-buner system, 1801-combustion fan, 1802-burner, 19-circulating fan; The 20-smoke filter, the 21-heat exchanger, 22-mends wind blower fan, 23-air cleaner, V1～V21-valve; The A1-drying system, A2-waste gas adsorption system, A3-solvent recovering system, A4-burned waste gas system, A5-air-makeup system.
The specific embodiment
As shown in Figure 1; Drying system A1 comprises unreeling structure 1, drying chamber 2 and rolling-up mechanism 3; Waste gas adsorption system A2 comprises absorption blower fan 5, gas radiator 6, absorber 7 and drying air fan 8; Solvent recovering system A3 comprises condenser 9, layering groove 10, wastewater trough 11, flux bath 12, solvent pump 13 and solvent tank 14; The A4 of burned waste gas system comprises flame arrester for pipe 15, heat accumulating type oxidation furnaces 16, purging motor 17 and buner system 18, and air-makeup system A5 comprises circulating fan 19, smoke filter 20, heat exchanger 21, mends wind blower fan 22 and air cleaner 23.
Unreeling structure 1 and rolling-up mechanism 3 lay respectively at the both sides of drying chamber 2.Drying chamber 2 is provided with 5 sections different oven dry sections altogether along the transmission direction of film, respectively with 201,202,203,204,205 marks.Oven dry section 201,202,203 links to each other with aiutage 4 with valve V1 through pipeline, links to each other with the inlet of absorption blower fan 5 with valve V2 through pipeline.Air duct links to each other with the inlet of absorption blower fan 5 through valve V3.
The outlet of absorption blower fan 5 links to each other with the inlet of gas radiator 6 through valve V4.The outlet of absorption blower fan 5 also links to each other with the inlet of flame arrester for pipe 15 with valve V5, V6 through pipeline, and links to each other with aiutage 4 with valve V5, V7 through pipeline.The outlet of gas radiator 6 links to each other with the inlet of absorber 7.Steam pipeline links to each other with the inlet of absorber 7.Air duct links to each other with the inlet of drying air fan 8, and the outlet of drying air fan 8 links to each other with the inlet of absorber 7.Absorber 7 has three outlets, and wherein two outlets link to each other with condenser 9, aiutage 4 respectively, and another outlet links to each other with inlet, the aiutage 4 of flame arrester for pipe 15 through valve V6, V7 respectively.The liquid outlet of condenser 9 links to each other with the inlet of layering groove 10.The gas vent of condenser 9 links to each other with the inlet of absorption blower fan 5.Three outlets of layering groove 10 link to each other with the inlet of flux bath 12, wastewater trough 11 and absorption blower fan 5 respectively.Two outlets of flux bath 12 link to each other with the inlet of solvent pump 13, absorption blower fan 5 respectively.The outlet of solvent pump 13 links to each other with solvent tank 14.
The outlet of flame arrester for pipe 15 links to each other with the inlet of heat accumulating type oxidation furnaces 16.Air duct links to each other with the inlet of purging motor 17, and the outlet of purging motor 17 links to each other with the inlet of heat accumulating type oxidation furnaces 16.Buner system 18 links to each other with heat accumulating type oxidation furnaces 16.Buner system 18 comprises combustion fan 1801 and burner 1802; Air duct links to each other with the inlet of combustion fan 1801; The outlet of combustion fan 1801 links to each other with burner 1802, and fuel channel links to each other with burner 1802, and burner 1802 links to each other with heat accumulating type oxidation furnaces 16.The outlet of heat accumulating type oxidation furnaces 16 links to each other with aiutage 4, and another outlet of heat accumulating type oxidation furnaces 16 links to each other with the inlet of aiutage 4, circulating fan 19 through V8, V9 respectively.Air duct links to each other with the inlet of circulating fan 19 through valve V10.Oven dry section 204,205 links to each other with the inlet of circulating fan 19 with valve V11 through pipeline.
The outlet of circulating fan 19 links to each other with the inlet of smoke filter 20.The outlet of smoke filter 20 links to each other with the inlet of heat exchanger 21.The outlet of heat exchanger 21 links to each other with oven dry section 201,202,203,204,205 through valve V13, V15, V17, V19, V21.Air duct links to each other with the inlet of mending wind blower fan 22.The outlet of mending wind blower fan 22 links to each other with the inlet of air cleaner 23.The outlet of air cleaner 23 links to each other with oven dry section 201,202,203,204,205 through valve V12, V14, V16, V18, V20.
During the drying chamber oepration at full load, high-concentration waste gas is through waste gas adsorption system and burned waste gas system.At this moment, valve V1, V3, V5, V7 close, other valve opens, and the high concentration gas after the oven dry gets into absorption blower fan 5 by oven dry section 201,202,203 through valve V2, gets into gas radiator 6 through valve V4 then, gets into absorber 7 again.Get into heat accumulating type oxidation furnaces 16 through the gas behind the adsorption cleaning through valve V6 and flame arrester for pipe 15.Adsorb saturated absorber 7 by the steam desorption, steam carries solvent and gets into condenser 9 by absorber 7.In condenser 9, most of steam and solvent all are condensed, and get into layering groove 10 through pipeline.On-condensible gas is got back to the porch of absorption blower fan 5 through pipeline.In layering groove 10, water and separated from solvent, and get into wastewater trough 11 and flux bath 12 respectively.The little of gas of layering groove 10 volatilizations is taken back the porch of absorption blower fan 5 by pipeline.Solvent in the flux bath 12 pumps into solvent tank 14 by solvent pump 13.The solvent of volatilization is connected to the porch of absorption blower fan 5 in the flux bath 12 by pipeline.Air is blown into absorber 7 by drying air fan 8, takes away the residual moisture behind the desorption, and through discharge of pipes to air draft tube 4.Gas behind the adsorption cleaning carries out high-temperature oxydation after getting into heat accumulating type oxidation furnaces 16.Gas behind the high-temperature oxydation partly enters aiutage 4 through valve V8, and part gets into circulating fan 19 through valve V9.Air gets into the inlet of circulating fan 19 through piping and valve V10.Light concentration gas is got into the inlet of circulating fan 19 through valve V11 by oven dry section 204,205.Filter through smoke filter 20 after three strands of gases mix, get into heat exchanger 21 heat exchange then.Guarantee stable flow rate and temperature in heat exchanger 21 exits.Air gets into air cleaners 23 through piping and benefit wind blower fan 22.Mist after air after the filtration and the heating by air cleaner 23 and the adjusting of heat exchanger 21 through valve V12-V21, gets into drying chamber 2 respectively, and each oven dry section of assurance has preset equilibrium temperature.
During the drying chamber underrun, the exhaust gas concentration of generation is lower, and it is not high to adsorb economic benefit, and needs to consume steam, produces secondary pollution.At this moment, waste gas directly gets into the burned waste gas system without waste gas adsorption system.Valve V1, V3, V4, V7 close, other valve opens.The waste gas of oven dry section 201,202,203 gets into absorption blower fan 5 through valve V2, gets into flame arrester for pipe 15 through valve V5, V6, gets into heat accumulating type oxidation furnaces 16 then.If exhaust gas concentration is low excessively, then can start buner system 18, in heat accumulating type oxidation furnaces 16, import heat.All the other are identical with oepration at full load.
When system needs to be serviced or because of other reasons can not pass through waste gas adsorption system and burned waste gas system, valve V1 opens, waste gas gets into aiutage 4 through valve V1.The hot-air that need to replenish get into circulating fan 19 through valve V10, V11, behind smoke filter 20 and heat exchanger 21, by valve V13, V15, V17, V19, V21 control, gets into each oven dry section.
The quantity of above-mentioned oven dry section also can correspondingly increase; Can select to get into exhaust-gas treatment and the ratio of returning circulating fan according to system loading during concrete the use; Mend the air valve place temperature detection is set, and control blower fan and valve, adjustment gets into the cold wind of each oven dry section and the amount of hot blast; Guarantee each oven dry section temperature stabilization, to realize the automatic operation of system.
Concrete application example below in conjunction with the utility model comes the utility model is described further:
The organic exhaust gas main component of paint line oven dry workshop discharging is toluene, xylenes, and volume ratio is 1: 1, and discharge amount of exhaust gas is 80000m3/h; Wherein high-concentration waste gas is 30000m3/h; Concentration is 4000ppm, and temperature is 100 ℃, and low concentration gas is 50000m3/h; Concentration is 50ppm, and temperature is 120 ℃.High-concentration waste gas at first through after the cooling, gets into waste gas adsorption system, adsorption efficiency 90%, and exit concentration is about 400ppm, gets into the burned waste gas system then, and exit concentration is about 3～5ppm, and control exhanst gas outlet temperature is about 160 ℃.Flue gas mixes with low concentration gas, part air, and temperature is 120 ℃, filters and the heat exchanger heat exchange through smoke filter, reaches 150 ℃, gets into drying chamber through valve, and the aperture of passing through to mend the wind blower fan and mend air valve is regulated the drying chamber temperature.
Above embodiment has carried out detailed introduction to the solvent recovery in coating line that the utility model provided oven dry workshop and burning disposal and total energy approach device; But only be used to understand the method and the core concept thereof of the utility model, should not be construed as is the restriction to the utility model protection domain; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, on the specific embodiment and range of application, can also make various deformation such as replacement, simple combination, this also should belong to the protection domain of the utility model.
Claims (6)
1. solvent recovery and the burning disposal and the total energy approach device in coating line oven dry workshop, be characterised in that: it comprises drying system, waste gas adsorption system, solvent recovering system, burned waste gas system, air-makeup system, aiutage and connection pipeline; The outlet of drying system links to each other with the inlet of waste gas adsorption system or burned waste gas system; The outlet of waste gas adsorption system links to each other with inlet, aiutage and the inlet of burned waste gas system of solvent recovering system respectively; The outlet of burned waste gas system links to each other with the inlet of aiutage and air-makeup system respectively, and the outlet of air-makeup system links to each other with the inlet of drying system.
2. solvent recovery and the burning disposal and the total energy approach device in a kind of coating line oven dry according to claim 1 workshop, it is characterized in that: drying system comprises drying chamber, at the two ends of drying chamber unreeling structure and rolling-up mechanism is set respectively; Waste gas adsorption system comprises absorber, and absorber links to each other with drying chamber, jet chimney and drying air fan respectively, and gas radiator is installed in being connected between drying chamber and absorber on the pipeline; Solvent recovering system comprises cool condenser and layering groove, and cool condenser links to each other with absorber, and the layering groove links to each other with condenser; The burned waste gas system comprises the heat accumulating type oxidation furnaces, and the inlet of heat accumulating type oxidation furnaces connects flame arrester for pipe, and flame arrester for pipe links to each other with drying chamber, absorber respectively; Air-makeup system comprises circulating fan, smoke filter and heat exchanger, and the outlet of heat accumulating type oxidation furnaces links to each other with circulating fan, smoke filter and heat exchanger successively, and heat exchanger links to each other with drying chamber.
3. solvent recovery and the burning disposal and the total energy approach device in a kind of coating line oven dry according to claim 2 workshop; It is characterized in that: drying chamber is made up of a plurality of oven dry sections; The oven dry section outlet that is positioned at the drying chamber upper reaches links to each other with the absorption fans entrance; The outlet of absorption blower fan links to each other with gas radiator, flame arrester for pipe and aiutage respectively, and the oven dry section outlet that is positioned at the drying chamber downstream connects circulating fan.
4. solvent recovery and the burning disposal and the total energy approach device in a kind of coating line oven dry according to claim 2 workshop; It is characterized in that: solvent recovering system also comprises wastewater trough and flux bath; Wastewater trough links to each other with the layering groove respectively with flux bath, and flux bath connects solvent tank through solvent pump; Layering groove, wastewater trough are communicated with the inlet that adsorbs blower fan through being connected pipeline respectively with flux bath.
5. solvent recovery and the burning disposal and the total energy approach device in a kind of coating line oven dry according to claim 2 workshop; It is characterized in that: the burned waste gas system also comprises buner system; Buner system comprises combustion fan and burner; Combustion fan links to each other with burner, and burner links to each other with the heat accumulating type oxidation furnaces.
6. solvent recovery and the burning disposal and the total energy approach device in a kind of coating line oven dry according to claim 2 workshop; It is characterized in that: air-makeup system also comprises mends wind blower fan and air cleaner; Mend the wind blower fan and connect air cleaner, air cleaner connects drying chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200207003U CN202410221U (en) | 2012-01-17 | 2012-01-17 | Device for recovering and incinerating solvent and comprehensively utilizing energy in drying workshop on coating production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200207003U CN202410221U (en) | 2012-01-17 | 2012-01-17 | Device for recovering and incinerating solvent and comprehensively utilizing energy in drying workshop on coating production line |
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| Publication Number | Publication Date |
|---|---|
| CN202410221U true CN202410221U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200207003U Expired - Lifetime CN202410221U (en) | 2012-01-17 | 2012-01-17 | Device for recovering and incinerating solvent and comprehensively utilizing energy in drying workshop on coating production line |
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| CN (1) | CN202410221U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553286A (en) * | 2012-01-17 | 2012-07-11 | 青岛华世洁环保科技有限公司 | Method and device for solvent recovery and incineration processing of coating production line drying workshop and comprehensive utilization of energy |
| CN104515374A (en) * | 2013-09-30 | 2015-04-15 | 台橡股份有限公司 | Environmental protection system and its application in factory |
| CN105222140A (en) * | 2015-10-20 | 2016-01-06 | 浙江工商大学 | A kind of waste gas purification apparatus for high-temperature heating device and method |
| CN105698521A (en) * | 2016-03-30 | 2016-06-22 | 广东环葆嘉节能科技有限公司 | Hot-air drying system and method |
| TWI604883B (en) * | 2016-07-22 | 2017-11-11 | Jg Environmental Technology Co Ltd | Organic waste gas pretreatment purification system and organic waste gas purification method of coating operation |
-
2012
- 2012-01-17 CN CN2012200207003U patent/CN202410221U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553286A (en) * | 2012-01-17 | 2012-07-11 | 青岛华世洁环保科技有限公司 | Method and device for solvent recovery and incineration processing of coating production line drying workshop and comprehensive utilization of energy |
| CN102553286B (en) * | 2012-01-17 | 2014-05-14 | 青岛华世洁环保科技有限公司 | Method and device for solvent recovery and incineration processing of coating production line drying workshop and comprehensive utilization of energy |
| CN104515374A (en) * | 2013-09-30 | 2015-04-15 | 台橡股份有限公司 | Environmental protection system and its application in factory |
| CN104515374B (en) * | 2013-09-30 | 2017-09-26 | 台橡股份有限公司 | Environmental protection system and its application in factory |
| CN105222140A (en) * | 2015-10-20 | 2016-01-06 | 浙江工商大学 | A kind of waste gas purification apparatus for high-temperature heating device and method |
| CN105698521A (en) * | 2016-03-30 | 2016-06-22 | 广东环葆嘉节能科技有限公司 | Hot-air drying system and method |
| TWI604883B (en) * | 2016-07-22 | 2017-11-11 | Jg Environmental Technology Co Ltd | Organic waste gas pretreatment purification system and organic waste gas purification method of coating operation |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN HUASHIJIE ENVIRONMENTAL PROTECTION NEW MAT Free format text: FORMER OWNER: QINGDAO HUASHIJIE ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Effective date: 20141205 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 266510 QINGDAO, SHANDONG PROVINCE TO: 300457 HANGU, TIANJIN |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141205 Address after: Nangang Industrial Zone 300457 Tianjin City Economic and Technological Development Zone No. 2 single plant Patentee after: Tianjin huashijie environmental protection new Mstar Technology Ltd Address before: Six Qingdao economic and Technological Development Zone, Shandong, No. 266510 Road, No. 16 Patentee before: Qingdao Huashijie Environment Protection Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
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| CX01 | Expiry of patent term |