CN202289535U - Solvent recycling and processing equipment - Google Patents
Solvent recycling and processing equipment Download PDFInfo
- Publication number
- CN202289535U CN202289535U CN2011202481258U CN201120248125U CN202289535U CN 202289535 U CN202289535 U CN 202289535U CN 2011202481258 U CN2011202481258 U CN 2011202481258U CN 201120248125 U CN201120248125 U CN 201120248125U CN 202289535 U CN202289535 U CN 202289535U
- Authority
- CN
- China
- Prior art keywords
- condensation
- absorption plant
- condenser
- adsorbent equipment
- treatment facility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Treating Waste Gases (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model relates to solvent recycling and processing equipment, which is provided with a condensing and absorbing device, an adsorbing device, a vacuum pump, a condenser and a separation groove, wherein the adsorbing device is connected with the condensing and absorbing device; the adsorbing device comprises an adsorbing bed which takes active carbon as an adsorbing material; the vacuum pump is connected with the adsorbing device; the condenser is connected with the vacuum pump and is further connected with the adsorbing device to flow uncondensed gas back to the adsorbing device; and the separation groove is connected with the condensing and absorbing device and the condenser, and can be used for carrying out oil-water separation on a product which is processed by the condensing and absorbing device and the condenser.
Description
Technical field
The utility model relates to a kind of solvent recovery treatment facility, particularly a kind of two stages recovery that utilizes condensation and active carbon desorption, the solvent recovery treatment facility that solvent is had high organic efficiency.
Background technology
Such as the various production systems relevant with chemical industry, or the large-scale experiment chamber of association area unavoidably can use various organic or inorganic solvents and be used to the carrying out that react; And in those solvents; Not only almost organism is all had strong toxicity, unhealthful very huge, and it has low-boiling volatilization character, the airspace that entering is opened in the room temperature or the temperature-rise period of reaction easily mostly; Not only can make Plant personnel or experimental implementation person be exposed to dangerous workplace; Those solvent molecules that are spread in the atmosphere also are a kind of significant loss simultaneously, if the unit price of those solvents is to belong to costliness, for example ten hydrocarbonylation naphthalenes; If do not solve, will significantly improve the cost of required cost in the production process to this loss problem.
Therefore, for how reclaiming employed solvent in the processing procedure, particularly those have the solvent of volatilization character, are important security in industrial circle or laboratory and economic benefit property subject under discussion.And to the research or the improvement of solvent recovery treatment facility, the past has in institute more, cherish those inputs still can't to deal with problems fully, and be not to attain in perfection.
Formerly in the technology, the TaiWan, China patent has disclosed a kind of high-effect organic solvent retracting device for M344918 number, and its device includes: a scrubbing tower, be connected with air entraining pipe and blast pipe, and absorb and reclaim and organic solvent soluble in water is washed liquid cooling; One active carbon adsorption desorption unit is connected in the blast pipe downstream of this scrubbing tower, and organic solvent adsorption desorption not soluble in water is reclaimed; One forecooler is arranged at the air entraining pipe of this scrubbing tower, lets the air-flow cooling that gets into this scrubbing tower; And a Temperature and Humidity Control unit, being arranged at the blast pipe of this scrubbing tower, the gas flow temperature that control gets into this active carbon adsorption desorption unit is lower than 40 ℃ and relative humidity and is lower than 60%RH person.A kind of high-effect organic solvent retracting device is provided by this, and has the effect that promotes organic efficiency and carbon reduction.Again in Chinese patent CN201588783 number; It is to disclose a kind of liquid ring vacuum device with solvent recovery; It mainly comprises tank body, first condenser, second condenser and liquid rotary pump; Aforementioned tank body top has and adds working solution mouth and the escape pipe that links to each other with second condenser; Tank body one side has feed tube that is connected with first condenser and the liquid back pipe that links to each other with liquid rotary pump, and the output of first condenser is connected with liquid rotary pump, and the gas-liquid separator on the liquid rotary pump is connected with second condenser through the vacuum degassing pipe; This one have the liquid ring vacuum device of solvent recovery effect be whole system under the state of relative closure, can utilize working solution that organic solvent gas is fully cooled off and reclaim.
But in those prior arts; Though it uses active carbon is sorbing material; Or use and a plurality of condensers are set are retracting device, but organic efficiency still has growing space, simultaneously in the process that reclaims; Also can not accomplish to make institute's recovered solvent immediately in recycling, or still can't guarantee to desire recovered solvent ease during the course fully and lose.
The utility model is to organic efficiency; And the recycled in its entirety flow process is made improvement for the follow-up convenience of utilizing again; See through the utility model two stage solvent recovery treatment facilities and arrange, can solve the high-recovery of failing to reach, the high usability again and the high feature of environmental protection over.
The utility model content
The main purpose of the utility model provides a kind of solvent recovery treatment facility, and this solvent recovery treatment facility utilizes two phase process flow processs of condensation and charcoal absorption, can expeditiously the solvent recovery in the waste gas be utilized again.
The secondary objective of the utility model provides a kind of solvent recovery treatment facility, and this solvent recovery treatment facility can reach the environmental objective of solvent and sewage zero-discharge.
Another purpose of the utility model provides a kind of solvent recovery treatment facility, and its recovered solvent purity is high, and moisture-free can directly reuse.
A purpose again of the utility model provides a kind of solvent recovery treatment facility, and it is simple for structure, is beneficial to follow-up serviceability.
The technical scheme of the utility model: a kind of solvent recovery treatment facility, it is to comprise:
One condensation and absorption plant;
One adsorbent equipment is to be connected with this condensation and absorption plant, and wherein to comprise with the active carbon be the adsorbent bed of sorbing material to this adsorbent equipment;
One vavuum pump is to be connected with this adsorbent equipment;
One condenser is to be connected with this vavuum pump, and it is connected with this adsorbent equipment in addition, will not coagulate gas backstreaming to this adsorbent equipment; And
One separating tank is to be connected with this condensation and absorption plant and this condenser, the product water-oil separating after it can be handled this condensation and absorption plant and this condenser.
In the utility model, further comprise an inlet duct, this inlet duct is to be connected with this condensation and absorption plant, supplies waste gas to get into.
In the utility model, further comprise an accumulator tank, this accumulator tank is to be connected with this separating tank.
In the utility model, wherein this inlet duct comprises a gas collection blower fan, and waste gas is introduced.
In the utility model, wherein this inlet duct comprises a filter, in order to dust removal by filtration.
In the utility model, wherein this waste gas can comprise organic volatile property solvents such as ten hydrocarbonylation naphthalenes and n-hexane.
In the utility model, wherein the condensation temperature of this condensation and absorption plant can reach-35 ℃~-45 ℃.
In the utility model, wherein this condensation and absorption plant have liquid film.
In the utility model, wherein this adsorbent equipment further comprises at least one first adsorbent bed and one second adsorbent bed.
In the utility model, wherein this adsorbent equipment further comprises a steam injection device, and this steam injection device is to be used for the steam desorption.
In the utility model, when wherein this steam injection device carried out the steam desorption when injecting steam to this first adsorbent bed or second adsorbent bed, the temperature of this first adsorbent bed or second adsorbent bed can be promoted to 110 ℃.
The invention also discloses a kind of solvent recovery treatment facility, it is to comprise:
One contains the inlet duct of ten hydrocarbonylation naphthalene waste gas;
One condensation and absorption plant;
One adsorbent equipment is to be connected with this condensation and absorption plant, and wherein to comprise with the active carbon be the adsorbent bed of sorbing material to this adsorbent equipment;
One vavuum pump is to be connected with this adsorbent equipment;
One condenser is to be connected with this vavuum pump, and it is connected with this adsorbent equipment in addition, will not coagulate gas backstreaming to this adsorbent equipment; And
One separating tank is to be connected with this condensation and absorption plant and this condenser, the product water-oil separating after it can be handled this condensation and absorption plant and this condenser.
The beneficial effect that the utlity model has: the utility model is to disclose a kind of solvent recovery treatment facility; It is with after production line processing procedure or the introducing of breadboard waste gas, utilizes cooling condensation and liquid film earlier, can carry out condensation when making high boiling volatile solvent gas molecule through liquid film and obtain; One adsorbent equipment is set again; It is that to comprise with the active carbon be the adsorbent bed of sorbing material, through charcoal absorption and steam desorption program, utilizes vavuum pump that the mist of adsorbent bed steam desorption program is extracted out; Carry out water-oil separating after handling with condenser again, the solvent recovery of high value is utilized once more.
Description of drawings
Fig. 1: it is the structural representation of a preferred embodiment of the utility model.
[figure number is to as directed]
10 inlet ducts, 101 gas collection blower fans
12 condensations of 102 filters and absorption plant
14 adsorbent equipments, 141 first adsorbent beds
142 second adsorbent beds, 143 steam injection devices
144 air combs, 16 vavuum pumps
18 condensers, 20 separating tanks
22 accumulator tanks, 24 valves
The specific embodiment
For making architectural feature of the utility model and the effect of being reached there are further understanding and understanding, cooperate detailed explanation, explain as follows in order to preferred embodiment and accompanying drawing:
Those solvent recovery treatment facilities in prior art; It is in removal process; The recovery ratio of gained is not thoroughly, maybe can not make institute's recovered solvent immediately in recycling, or the ease that still can't guarantee solvent is fully lost; So the utility model designs this solvent recovery treatment facility to reach the target of the high benefit and the high feature of environmental protection to those disappearances.
At first, please refer to Fig. 1, it is the structural representation of a preferred embodiment of the utility model; As shown in the figure, the solvent recovery treatment facility of the utility model, it comprises an inlet duct 10, wherein comprises a gas collection blower fan 101, a filter 102; One condensation and absorption plant 12; One adsorbent equipment 14 wherein comprises one first adsorbent bed 141, one second adsorbent bed 142, a steam injection device 143, an air comb 144; One vavuum pump 16; One condenser 18; One separating tank 20; One accumulator tank 22; A plurality of valves 24 and each device connect necessary pipeline.
Wherein, inlet duct 10 is to supply waste gas to get into, and the gas collection blower fan 101 in the inlet duct 10 is connected with filter 102; Condensation and absorption plant 12 be with inlet duct 10 in filter 102 be connected; First adsorbent bed 141 in the adsorbent equipment 14 and second adsorbent bed 142 are to be connected with condensation and absorption plant 12 simultaneously; And first adsorbent bed 141 and second adsorbent bed 142 are connected with steam injection device 143 all in addition, and first adsorbent bed 141 and second adsorbent bed 142 are connected with air comb 144 all more in addition again; Vavuum pump 16 be simultaneously with adsorbent equipment 14 in first adsorbent bed 141 and second adsorbent bed 142 be connected; Condenser 18 is to be connected with vacuum pump 16, its in addition simultaneously with adsorbent equipment 14 in first adsorbent bed 141 and second adsorbent bed 142 be connected, will not coagulate gas backstreaming to adsorbent equipment 14; Separating tank 20 is to be connected with condenser 18, and it is connected with this condensation and absorption plant 12 in addition; Accumulator tank 22 is to be connected with separating tank 20.The pipe that 24 on a plurality of valves are arranged between first adsorbent bed 141 and second adsorbent bed 142 and condensation and absorption plant 12, steam injection device 143, air comb 144, the vavuum pump 16 is online, to control the gas turnover of first adsorbent bed 141 and second adsorbent bed 142.
The utility model is that inlet duct 10 is connected with collected waste line in the running of recycling, sees through the gas collection blower fan 101 that inlet duct 10 is comprised, and waste gas is introduced begin to recycle.Gas collection blower fan 101 is introduced into filter 102 dust removals by filtration with waste gas, and this filter 102 can fall diameter for the dust-filtering more than several microns, to guarantee the service life of this solvent recovery treatment facility.Waste gas after the dedusting gets into condensation and absorption plant 12 through pipeline; This condensation and absorption plant 12 comprise liquid film; The dual usefulness of utilizing cooling condensation and liquid film to absorb; Under the temperature conditions to specific solvent boiling point (as to ten hydrocarbonylation naphthalenes, being set at-35 ℃~-45 ℃ approximately), the inner coil pipe wall of condensation and absorption plant 12 condenses the moisture or the organic volatile property solvent condenses of higher boiling molecule waste gas; When the higher boiling volatilization gas can absorb during through liquid film, along pipeline transmission to separating tank 20.
Waste gas after condensation and absorption plant 12 processing gets into adsorbent equipments 14 along pipeline through valve 24; Wherein, First adsorbent bed 141 and second adsorbent bed 142 that adsorbent equipment 14 is comprised are to be used alternatingly; Anticipate when promptly first adsorbent bed 141 is used to adsorb, 142 of second adsorbent beds carry out the steam desorption, and vice versa.Act as example with first adsorbent bed 141; After waste gas gets into first adsorbent bed 141; The charcoal absorption material of first adsorbent bed 141 is with solvent molecule absorption in the waste gas; And through the pure air behind the charcoal absorption solvent molecule, then via the pipeline and the valve 24 thereof that connect air comb 144, discharge by air comb 144.And the charcoal absorption of treating first adsorbent bed 141 saturated after; Steam injection device 143 passes through valve 24 with steam via pipeline; Steam is injected first adsorbent bed 141, make first adsorbent bed, 141 temperature be increased to about 110 ℃, this moment, solvent molecule was from the active carbon desorption; 16 pairs first adsorbent beds 141 of vavuum pump vacuumize simultaneously; What make first adsorbent bed 141 contains the solvent molecule steam via the pipeline and the valve 24 thereof that connect vavuum pump 16, arrives at vavuum pump 16 earlier, is transported to condenser 18 via vavuum pump 16 again.
Condenser 18 will contain the solvent molecule steam and be cooled to liquid; Again this liquid is delivered to separating tank 20 through pipeline; The gas that does not condense is then via the pipeline and the valve 24 thereof that connect first adsorbent bed 141 and second adsorbent bed 142, gets back to first adsorbent bed 141 or second adsorbent bed 142 adsorbs once more.The liquid that enters to separating tank 20 then carries out water-oil separating; High-purity solvent after the separation reclaims into accumulator tank 22 along pipeline; Water after separating is then done recovery through another pipeline in addition, can recycle to be used to make the steam of steam injection device 143 or the liquid film of condensation and absorption plant 12.
The foregoing description is that the solvent recovery treatment facility is through two phase process; Utilize cooling condensation and liquid film earlier; Can carry out condensation when making high boiling volatile solvent gas molecule and obtain, again through being the adsorbent equipment of sorbing material, through absorption and steam desorption program with the active carbon through liquid film; Obtain highly purified solvent molecule, can directly utilize again.
In the chemical fibre process, employed ten hydrocarbonylation naphthalenes are expensive solvent, in order to take into account environmental protection and to reduce production costs, therefore, are another preferred embodiment to reclaim this expensive solvent of ten hydrocarbonylation naphthalenes again.Compare with the composition assembly of previous embodiment, increased by one contain ten hydrocarbonylation naphthalene waste gas inlet duct, that is the inlet duct 10 collected waste gas that pass through contain ten hydrocarbonylation naphthalenes.In this embodiment; Experimental machine equipment gives off about 60 ℃~80 ℃ waste gas that contains volatile organic solvent ten hydrocarbonylation naphthalenes after pipeline is collected, and through the gas collection blower fan 101 and the filter 102 of inlet duct 10, the dust particle more than the micron grade is removed at first in regular turn; Get into condensation and absorption plant 12 then; This moment, temperature dropped to-35 ℃~-45 ℃, and the fusing point of ten hydrocarbonylation naphthalenes is-43.3 ℃, and boiling point is 194.6 ℃; So the time ten hydrocarbonylation naphthalenes will be condensed into the tube wall face that liquid state or solid fine grain are attached to this condensation and absorption plant 12, those coagulations get into separating tank 20 through pipeline again.Gas after this condensation and absorption plant 12 processing; First adsorbent bed 141 or second adsorbent bed 142 that get into adsorbent equipment 14 again carry out charcoal absorption; Ten hydrocarbonylation naphthalenes of the overwhelming majority reclaim completion in preceding condensation and absorption stage again; This moment, gas temperature was about 40 ℃, and these adsorbent equipment 14 purposes are the volatilization gas of minute quantity is adsorbed fully.After this adsorbent bed absorption; Clean gas through charcoal absorption then is disposed to atmosphere via the air comb; Then the valve switching makes steam injection device 143 that steam is injected this adsorbent bed, and temperature increase is to about 110 ℃, and vavuum pump 16 begins this adsorbent bed is vacuumized simultaneously.The gas that adsorbent bed is released is transported to condenser 18 by vavuum pump 16, and condensed liquid enters to separating tank 20 and carries out water-oil separating, and the gas that does not coagulate is then carried resorption to attach device 14 again and repeated absorption.High-purity ten hydrocarbonylation naphthalene solvents after the separation reclaim into accumulator tank 22 along pipeline, can directly utilize.
See through this solvent recovery treatment facility; The solvent of high value is able to utilize once more; Be the material that given off simultaneously for through filtration and charcoal absorption after pure air; Reach the target that contains the solvent gas zero-emission, compliance with environmental protection requirements, the cost that also in industrial process, consumes solvent simultaneously significantly reduces.
In sum; Be merely the preferred embodiment of the utility model; Be not to be used for limiting the scope that the utility model is implemented; All equalizations of doing according to the described shape of the utility model claim scope, structure, characteristic and spirit change and modify, and all should be included in the claim scope of the utility model.
Claims (9)
1. a solvent recovery treatment facility is characterized in that, it is to comprise:
One condensation and absorption plant;
One adsorbent equipment is to be connected with this condensation and absorption plant, and wherein to comprise with the active carbon be the adsorbent bed of sorbing material to this adsorbent equipment;
One vavuum pump is to be connected with this adsorbent equipment;
One condenser is to be connected with this vavuum pump, and it is connected with this adsorbent equipment in addition, will not coagulate gas backstreaming to this adsorbent equipment; And
One separating tank is to be connected with this condensation and absorption plant and this condenser, the product water-oil separating after it can be handled this condensation and absorption plant and this condenser.
2. solvent recovery treatment facility as claimed in claim 1 is characterized in that, further comprises an inlet duct, and this inlet duct is to be connected with this condensation and absorption plant, supplies waste gas to get into.
3. solvent recovery treatment facility as claimed in claim 1 is characterized in that, further comprises an accumulator tank, and this accumulator tank is to be connected with this separating tank.
4. solvent recovery treatment facility as claimed in claim 2 is characterized in that, wherein this inlet duct comprises a gas collection blower fan, and waste gas is introduced.
5. solvent recovery treatment facility as claimed in claim 2 is characterized in that wherein this inlet duct comprises a filter, in order to dust removal by filtration.
6. solvent recovery treatment facility as claimed in claim 1 is characterized in that wherein this condensation and absorption plant have liquid film.
7. solvent recovery treatment facility as claimed in claim 1 is characterized in that, wherein this adsorbent equipment further comprises at least one first adsorbent bed and one second adsorbent bed.
8. solvent recovery treatment facility as claimed in claim 1 is characterized in that, wherein this adsorbent equipment further comprises a steam injection device, and this steam injection device is to be used for the steam desorption.
9. a solvent recovery treatment facility is characterized in that, it is to comprise:
One contains the inlet duct of ten hydrocarbonylation naphthalene waste gas;
One condensation and absorption plant;
One adsorbent equipment is to be connected with this condensation and absorption plant, and wherein to comprise with the active carbon be the adsorbent bed of sorbing material to this adsorbent equipment;
One vavuum pump is to be connected with this adsorbent equipment;
One condenser is to be connected with this vavuum pump, and it is connected with this adsorbent equipment in addition, will not coagulate gas backstreaming to this adsorbent equipment; And
One separating tank is to be connected with this condensation and absorption plant and this condenser, the product water-oil separating after it can be handled this condensation and absorption plant and this condenser.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011202481258U CN202289535U (en) | 2011-07-11 | 2011-07-11 | Solvent recycling and processing equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011202481258U CN202289535U (en) | 2011-07-11 | 2011-07-11 | Solvent recycling and processing equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202289535U true CN202289535U (en) | 2012-07-04 |
Family
ID=46358523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011202481258U Expired - Fee Related CN202289535U (en) | 2011-07-11 | 2011-07-11 | Solvent recycling and processing equipment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202289535U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104069717A (en) * | 2013-03-29 | 2014-10-01 | 张家港市苏承环保设备有限公司 | Solvent separating and processing device |
CN105999993A (en) * | 2016-07-05 | 2016-10-12 | 中国环境科学研究院 | Flue gas demercuration device and method for recycling flue gas mercury through adsorption-desorption self-coupling |
CN109289226A (en) * | 2018-09-29 | 2019-02-01 | 武汉旭日华环保科技股份有限公司 | The processing method and its device of high concentration decahydronaphthalene tail gas |
-
2011
- 2011-07-11 CN CN2011202481258U patent/CN202289535U/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104069717A (en) * | 2013-03-29 | 2014-10-01 | 张家港市苏承环保设备有限公司 | Solvent separating and processing device |
CN105999993A (en) * | 2016-07-05 | 2016-10-12 | 中国环境科学研究院 | Flue gas demercuration device and method for recycling flue gas mercury through adsorption-desorption self-coupling |
CN105999993B (en) * | 2016-07-05 | 2018-09-11 | 中国环境科学研究院 | The method of flue gas mercury removal device and adsorption-desorption self coupling method recovered flue gas mercury |
CN109289226A (en) * | 2018-09-29 | 2019-02-01 | 武汉旭日华环保科技股份有限公司 | The processing method and its device of high concentration decahydronaphthalene tail gas |
CN109289226B (en) * | 2018-09-29 | 2024-04-05 | 武汉旭日华环保科技股份有限公司 | Method and device for treating high-concentration decalin tail gas |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103990351B (en) | A kind of purification recovery device of volatile organic waste gas | |
CN105498446A (en) | Method for recycling organic matter through organic waste gas adsorption, steam desorption and fractional condensation | |
CN104524929A (en) | Efficient energy-saving purification and recovery process of tail gas containing volatile organic compounds (VOCs) | |
CN202297109U (en) | Total recycle low-pressure hydrogen recovery device | |
CN104028075A (en) | Device and process for recycling organic gas through low-pressure dry-type indirect heating desorption | |
CN105413226A (en) | Organic waste gas recycling device and organic waste gas recycling process based on membrane-method coupled condensation adsorption | |
CN102350204B (en) | Modular absorbing and purifying device for volatile organic waste gases | |
CN203899371U (en) | Waste gas treatment device for plastic granulator | |
CN106853315A (en) | Low-concentration organic exhaust gas recovery and processing system | |
CN102009955B (en) | Method for recovering hydrogen chloride from trichlorosilane tail gas | |
CN102653815A (en) | Mirror face plate annealing furnace shielding gas reclamation and cyclic utilization device | |
CN101391154A (en) | Improved volatile organic compounds recovery method | |
CN202289535U (en) | Solvent recycling and processing equipment | |
CN107670454B (en) | Toluene waste gas vacuum cryogenic recovery system and recovery process thereof | |
CN202141345U (en) | Tail gas recovering system for annealing furnace | |
CN104815514A (en) | Waste gas treatment system using condensation method | |
CN102019127A (en) | Recovery unit for absorbing organic waste gas by activated carbon | |
CN202666652U (en) | Nitrogen-desorbing organic waste gas recycling device | |
CN206911061U (en) | Low-concentration organic exhaust gas recovery and processing system | |
CN104436982A (en) | Low concentration oxygen-containing organic waste gas recovery technology for dry spinning | |
CN105381682A (en) | VOC waste gas purification and recycle system | |
CN206064080U (en) | A kind of organic waste-gas purification reclaims integrated apparatus | |
CN104190197A (en) | Device and technology for purifying waste gas escaping from top of wet coke quenching tower | |
CN103830983A (en) | Process method for removing dust in waste gas | |
CN205042330U (en) | Novel efficient organic solvent recovery system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20200711 |