CN108905261A - A kind of organic solvent gas vacuum recovery system and method - Google Patents
A kind of organic solvent gas vacuum recovery system and method Download PDFInfo
- Publication number
- CN108905261A CN108905261A CN201811087351.5A CN201811087351A CN108905261A CN 108905261 A CN108905261 A CN 108905261A CN 201811087351 A CN201811087351 A CN 201811087351A CN 108905261 A CN108905261 A CN 108905261A
- Authority
- CN
- China
- Prior art keywords
- valve
- organic solvent
- pump
- vacuum
- solvent gas
- 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.)
- Pending
Links
- 239000003960 organic solvent Substances 0.000 title claims abstract description 57
- 238000011084 recovery Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 62
- 230000005494 condensation Effects 0.000 description 9
- 238000009833 condensation Methods 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/0072—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of organic solvent gas vacuum recovery system, including be sequentially connected by pipeline knockout drum, vacuum pump, condenser, receiving tank and turn liquid pump；It is provided with the first valve between the knockout drum and vacuum pump, the second valve is provided between the vacuum pump and condenser；First branch pipeline is provided between the vacuum pump and the first valve, the first branch pipeline is connected to condenser, second branch pipeline is provided between the vacuum pump and the second valve, the second branch pipeline is connected to external pipe, is respectively arranged with third valve and the 4th valve on the first branch pipeline and second branch pipeline.In addition, also providing a kind of organic solvent gas vacuum recovery method.The present invention uses closed system, and minute-pressure contracting is carried out in closed system, realizes and recycles to the room temperature of organic solvent gas.
Description
Technical field
The invention belongs to Refrigeration Engineering technical field, specially a kind of organic solvent gas vacuum recovery system and method.
Background technique
Current organic solvent gas recyclable device is all to belong to open type organic solvent gas recyclable device, nothing before vacuum pump
Entrainment separator will be installed filter before some devices, but filter easily blocks, and influences to produce.After some vacuum pumps
Frozen-free device has condensing unit after some vacuum pumps, but needs to be condensed using low temperature chilled water.The former can generate largely
Organic solvent organic solvent gas, either use absorption (by exhaust gas conversion for waste liquid) or burn (RTO burning), all can
Huge pressure, while waste of energy and resource are brought to the environmental protection treatment of rear end.Although the latter has condensing unit, but to cold
The demand for freezing water is huge, while can also generate a certain amount of organic solvent organic solvent gas, however it remains environmental issue, after
It is continuous that there is still a need for use absorption (by exhaust gas conversion for waste liquid) or burn (RTO burning).There is also a safety for open system
There is the possibility flowed backward, can there is very big security risk in problem, air.This is to be related to inflammable and explosive organic solvent industry at present
Use industry common fault and industry problems present in vacuum pump technical process.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of organic solvent gas vacuum recovery systems, using enclosed system
System carries out minute-pressure contracting in closed system, realizes and recycles to the room temperature of organic solvent gas.
In order to solve the above technical problems, the technical solution of the embodiment of the present invention is specific as follows.
A kind of organic solvent gas vacuum recovery system, including the knockout drum, vacuum pump, condensation being sequentially connected by pipeline
Device, receiving tank and turn liquid pump；The first valve is provided between the knockout drum and vacuum pump, between the vacuum pump and condenser
It is provided with the second valve；First branch pipeline is provided between the vacuum pump and the first valve, the first branch pipeline connects
Logical condenser, is provided with second branch pipeline between the vacuum pump and the second valve, the second branch pipeline connection is external
Pipeline is respectively arranged with third valve and the 4th valve on the first branch pipeline and second branch pipeline.
Further, the input end of the receiving tank is provided with exhaust outlet, and the exhaust outlet is connected by third bypass line
External pipe is connect, is provided with counterbalance valve in the third bypass line.
Further, check-valves is provided on the external pipe.
Further, organic solvent gas import is provided on the knockout drum.
Further, first valve, the second valve, third valve and the 4th valve are reversal valve.
Further, cyclone separator is provided in the knockout drum.
On the other hand, the present invention also provides a kind of organic solvent gas vacuum recovery method, include the following steps：
S1, draw-off pump initial vacuum：Using the incoagulable gas in system before vacuum pump draw-off pump, establishes and pump the true of preceding system
Reciprocal of duty cycle；
Vacuum after S2, draw-off pump：Connection before cutting pumps between system and vacuum pump, using system after vacuum pump draw-off pump
In incoagulable gas, establish pump after system vacuum degree；
S3, by the minute-pressure contracting of the vacuum pump so that micro-positive pressure is formed in condenser, so that by condenser
Organic solvent gas is condensed by room temperature.
Further, system includes knockout drum before the pump, is provided with cyclone separator in the knockout drum.
Compared with prior art, this have the advantage that：
(1) incoagulable gas in vacuum recovery system is excluded by vacuum pump, it is ensured that subsequent recovery organic solvent gas
Purity.
(2) the bottom line discharge (zero-emission) for realizing organic solvent gas, recycles organic solvent gas to the greatest extent
Body raw material solves to have saved resource while environmental issue.
(3) it realizes that micro-positive pressure locks gas by the minute-pressure contracting of vacuum pump, improves the condensation temperature of organic solvent gas, realize
Room temperature condensation, it is energy saving.
(4) it prevents air from flowing backward by the counterbalance valve and check-valves of receiving tank exhaust outlet, prevents the generation of safety accident.
(5) organic solvent gas being separated by knockout drum, the liquid and solid entrainment being had separate,
Vacuum pump is entered back into, protects vacuum pump not block stuck, avoids the safety accident generated due to pump chamber buildup.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of organic solvent gas vacuum recovery system in the embodiment of the present invention.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, " connection " should do broad sense
Understand, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be directly connected, it can also
Indirectly connected through an intermediary, can be the connection inside two elements.For the ordinary skill in the art,
The concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As shown in Figure 1, a kind of organic solvent gas vacuum recovery system, including the separation being sequentially connected by pipeline 200
Tank 100, vacuum pump 400, condenser 500, receiving tank 600 and turn liquid pump 700；It is set between the knockout drum 100 and vacuum pump 400
It is equipped with the first valve 310, the second valve 320 is provided between the vacuum pump 400 and condenser 500；400 He of vacuum pump
First branch pipeline is provided between first valve 310, the first branch pipeline is connected to condenser 500, the vacuum pump 400
And second be provided with second branch pipeline between valve 320, the second branch pipeline is connected to external pipe, the first branch
Third valve 330 and the 4th valve 340 are respectively arranged on pipeline and second branch pipeline.Vacuum is excluded by vacuum pump 400
Incoagulable gas in recovery system, it is ensured that the purity of subsequent recovery organic solvent gas.Turning liquid pump 700 can be by condensation
Organic solvent gas recycling utilizes again.Organic solvent gas vacuum recovery system realizes the bottom line of organic solvent gas
It discharges (zero-emission), recycles organic solvent gas raw material to the greatest extent, solve to have saved resource while environmental issue.Pass through
Micro-positive pressure between the minute-pressure contracting and receiving tank 600 of vacuum pump 400 locks gas, improves the condensation temperature of organic solvent gas, real
Existing room temperature condensation, it is energy saving.
Further, the input end of the receiving tank 600 is provided with exhaust outlet, and the exhaust outlet passes through third bypass line
External pipe is connected, is provided with counterbalance valve 350 in the third bypass line.Micro-positive pressure makes counterbalance valve 350 normally closed and then reaches
To lock gas effect, micro-positive pressure lock gas effect is improved.
Further, air flows backward in order to prevent, prevents the generation of safety accident, is provided with non-return on the external pipe
Valve 360.
Further, organic solvent gas import 110 is provided on the knockout drum 100.
Further, first valve 310, the second valve 320, third valve 330 and the 4th valve 340 are commutation
Valve.
Further, cyclone separator is provided in the knockout drum 100.Knockout drum 100 is according to organic solvent gas
Vacuum recovery system in use the characteristics of, gas generated big using initial stage, 100 internal cyclone separators of knockout drum play
Effect, drop or dust that a large amount of organic solvent gas are carried secretly are fallen by centrifugal force separate, later period gas flow it is small when
It after being failed by whirlwind, is collided by the filler on separator top, baffling removes a small amount of entrainment.Knockout drum simultaneously
Gas purging device is designed on 100, convenient for cleaning and cleaning.
The principle of closed vacuum refrigeration and cold accumulation equipment in order to better understand, below to closed vacuum refrigeration and cold accumulation equipment
Course of work further progress illustrates：
System before the first draw-off pump of vacuum pump 400 (process equipment, preceding condensing unit and pipeline group i.e. before knockout drum 100 and tank
At system) in incoagulable gas, establish pump before system vacuum degree, at this time the first valve 310, the second valve 320 work,
Third valve 330, the 4th valve 340 are closed；Then system incoagulable gas after 400 draw-off pump of vacuum pump, valve transfer at this time,
The first valve 310, the second valve 320 are closed at this time, third valve 330, the work of the 4th valve 340, and system is true after foundation pump
Restore after reciprocal of duty cycle to initial state, the work of organic solvent gas vacuum recovery system open type.It is organic in the whole system course of work
Solvent gas is all to carry out entrainment separation by knockout drum 100, guarantees that vacuum pump 400 is not contaminated；Whole system is all located
Extremely low in the oxygen content concentration in closed state, system, air will not flow backward at any time, prevent using organic solvent gas
There is safety accident in the vacuum system of body.System is in micro-positive pressure system after pump, and the condensation temperature of solvent gas is increased, and becomes
It obtains and more easily condenses, can be cooled down using room temperature cooling water.Turn liquid pump 700 by 600 Liquid level of receiving tank can and
When lime set is produced.Whole process is realized by automatic control.In the establishment process of pump initial vacuum degree, incoagulable gas is compressed
System after to pump；The establishment process of vacuum degree after pump is the received tank 600 of incoagulable gas, condenser 500, valve 330, true
Sky pump 400 arrives the emptying of valve 340 again.
On the other hand, the present invention also provides a kind of organic solvent gas vacuum recovery method, include the following steps：
S1, draw-off pump initial vacuum：Using the incoagulable gas in system before 400 draw-off pump of vacuum pump, system before pumping is established
Vacuum degree；
Vacuum after S2, draw-off pump：Connection before cutting pumps between system and vacuum pump 400, using 400 draw-off pump of vacuum pump
Incoagulable gas in system afterwards establishes the vacuum degree of system after pump；
S3, by the minute-pressure contracting of the vacuum pump 400 so that micro-positive pressure is formed in condenser 500, so that through being subcooled
The organic solvent gas of condenser 500 is condensed by room temperature.
Go out it should be noted that vacuum pump 400 and condenser 500 are sequentially connected to the organic solvent gas in production equipment
Mouth and organic solvent liquid material inlet, vacuum pump 400 and condenser 500 are used in combination realizes solvent gas under normal temperature conditions
The liquefaction and recycling of body.
Organic solvent gas vacuum recovery method excludes the incoagulable gas in vacuum recovery system by vacuum pump 400,
Ensure the purity of subsequent recovery organic solvent gas.Organic solvent gas vacuum recovery method realizes organic solvent gas
Bottom line discharges (zero-emission), recycles organic solvent gas raw material to the greatest extent, solves to save while environmental issue
Resource.By the minute-pressure contracting of the vacuum pump 400 so that forming micro-positive pressure in condenser 500, organic solvent gas is improved
Condensation temperature realizes room temperature condensation, energy saving.
Further, system includes knockout drum 100 before the pump, is provided with cyclone separator in the knockout drum 100.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It both falls in the scope of protection of present invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (8)
1. a kind of organic solvent gas vacuum recovery system, it is characterised in that：Including the separation being sequentially connected by pipeline (200)
Tank (100), vacuum pump (400), condenser (500), receiving tank (600) and turn liquid pump (700)；The knockout drum (100) and true
It is provided with the first valve (310) between sky pump (400), is provided with the second valve between the vacuum pump (400) and condenser (500)
Door (320)；First branch pipeline, the first branch pipeline are provided between the vacuum pump (400) and the first valve (310)
It is connected to condenser (500), is provided with second branch pipeline between the vacuum pump (400) and the second valve (320), described second
Bypass line is connected to external pipe, is respectively arranged with third valve (330) on the first branch pipeline and second branch pipeline
With the 4th valve (340).
2. organic solvent gas vacuum recovery system according to claim 1, it is characterised in that：The receiving tank (600)
Input end be provided with exhaust outlet, the exhaust outlet connects external pipe, the third bypass line by third bypass line
On be provided with counterbalance valve (350).
3. organic solvent gas vacuum recovery system according to claim 1, it is characterised in that：It is set on the external pipe
It is equipped with check-valves (360).
4. organic solvent gas vacuum recovery system according to claim 1, it is characterised in that：The knockout drum (100)
On be provided with organic solvent gas import (110).
5. organic solvent gas vacuum recovery system according to claim 1, it is characterised in that：First valve
(310), the second valve (320), third valve (330) and the 4th valve (340) are reversal valve.
6. organic solvent gas vacuum recovery system according to claim 1, it is characterised in that：The knockout drum (100)
Inside it is provided with cyclone separator.
7. a kind of organic solvent gas vacuum recovery method, which is characterized in that include the following steps：
S1, draw-off pump initial vacuum：Using the incoagulable gas in system before vacuum pump (400) draw-off pump, system before pumping is established
Vacuum degree；
Vacuum after S2, draw-off pump：Connection before cutting pumps between system and vacuum pump (400), using vacuum pump (400) draw-off pump
Incoagulable gas in system afterwards establishes the vacuum degree of system after pump；
S3, micro-positive pressure is formed so that condenser (500) is middle by the minute-pressure contracting of the vacuum pump (400), so that through being subcooled
The organic solvent gas of condenser (500) is condensed by room temperature.
8. organic solvent gas vacuum recovery method according to claim 7, it is characterised in that：System includes before the pump
Knockout drum (100) is provided with cyclone separator in the knockout drum (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811087351.5A CN108905261A (en) | 2018-09-18 | 2018-09-18 | A kind of organic solvent gas vacuum recovery system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811087351.5A CN108905261A (en) | 2018-09-18 | 2018-09-18 | A kind of organic solvent gas vacuum recovery system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108905261A true CN108905261A (en) | 2018-11-30 |
Family
ID=64408071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811087351.5A Pending CN108905261A (en) | 2018-09-18 | 2018-09-18 | A kind of organic solvent gas vacuum recovery system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108905261A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494976A (en) * | 2020-09-21 | 2021-03-16 | 安徽新涛光电科技有限公司 | PMMA volatile gas condensation recovery equipment |
| CN114379845A (en) * | 2020-10-20 | 2022-04-22 | 鸿蒙科技(浙江)有限公司 | Aerosol can refrigerant split charging method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201551866U (en) * | 2009-11-03 | 2010-08-18 | 焦作健康元生物制品有限公司 | Device for recovering tail gas of 7-aminoce-phalosporanic acid menstruum vacuum pump |
| JP5360328B1 (en) * | 2013-06-04 | 2013-12-04 | Ｊｏｉｎｔエンジニアリング株式会社 | Method and apparatus for simultaneously recovering lithium salt for electrolyte and organic solvent from waste electrolyte |
| CN204768117U (en) * | 2015-05-27 | 2015-11-18 | 南通沃兰化工有限公司 | Organic solvent recovery unit among wet article dry run of diphenyl sulphone (DPS) |
| CN105214442A (en) * | 2015-10-26 | 2016-01-06 | 马军 | A kind of new and effective recovery system for organic solvent |
| CN208893664U (en) * | 2018-09-18 | 2019-05-24 | 迪茗（上海）智能科技有限公司 | A kind of organic solvent gas vacuum recovery system |
-
2018
- 2018-09-18 CN CN201811087351.5A patent/CN108905261A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201551866U (en) * | 2009-11-03 | 2010-08-18 | 焦作健康元生物制品有限公司 | Device for recovering tail gas of 7-aminoce-phalosporanic acid menstruum vacuum pump |
| JP5360328B1 (en) * | 2013-06-04 | 2013-12-04 | Ｊｏｉｎｔエンジニアリング株式会社 | Method and apparatus for simultaneously recovering lithium salt for electrolyte and organic solvent from waste electrolyte |
| CN204768117U (en) * | 2015-05-27 | 2015-11-18 | 南通沃兰化工有限公司 | Organic solvent recovery unit among wet article dry run of diphenyl sulphone (DPS) |
| CN105214442A (en) * | 2015-10-26 | 2016-01-06 | 马军 | A kind of new and effective recovery system for organic solvent |
| CN208893664U (en) * | 2018-09-18 | 2019-05-24 | 迪茗（上海）智能科技有限公司 | A kind of organic solvent gas vacuum recovery system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494976A (en) * | 2020-09-21 | 2021-03-16 | 安徽新涛光电科技有限公司 | PMMA volatile gas condensation recovery equipment |
| CN114379845A (en) * | 2020-10-20 | 2022-04-22 | 鸿蒙科技(浙江)有限公司 | Aerosol can refrigerant split charging method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201255547Y (en) | Air-conditioning duct cleaning device in coolant recovering machine | |
| CN102161905B (en) | Oil gas recovering system | |
| CN104826472A (en) | Flue gas carbon dioxide capture recovery system | |
| CN108905261A (en) | A kind of organic solvent gas vacuum recovery system and method | |
| CN108211671A (en) | A kind of energy-saving carbon dioxide regeneration and compressibility and method | |
| CN208893664U (en) | A kind of organic solvent gas vacuum recovery system | |
| CN209500851U (en) | A kind of cracking tail gas recovery and processing system | |
| CN207048936U (en) | The recovery system of natural gas compressor | |
| CN204799090U (en) | Flue gas carbon dioxide entrapment recovery system | |
| CN208778054U (en) | Exhaust steam residual heat and condensate recovery device after the matched injector work done of steam turbine | |
| CN206785636U (en) | Natural gas compressor system | |
| CN105056695B (en) | Furfural vapour slag separating and reclaiming device and its recovery method | |
| CN110614006B (en) | Full-automatic oil fume purification treatment method of chemical fiber filaments | |
| CN214142216U (en) | Dust filtration system is failed to coal bed gas collection | |
| CN209116630U (en) | The centrifugal ammonia ice maker device of self-operated type drain | |
| CN210287248U (en) | Improved supersonic speed natural gas dehydration and dealkylation separator | |
| CN113153231A (en) | Negative pressure gas production device | |
| CN202786057U (en) | Methyl chloride and heat recovery system | |
| CN110657608A (en) | Recovery and filling machine for automobile air conditioner refrigerant and application thereof | |
| CN205838927U (en) | Light oil recovery devices from natural gas | |
| CN2560846Y (en) | Closed recovering device suitable for high-temp. condensed water with high steam content | |
| CN220151304U (en) | Dust removing system for underground tunnel drilling machine | |
| CN200946763Y (en) | Decompression device for condensed water closed type recovery system | |
| CN212383431U (en) | Recovery system of volatile organic compounds in tail gas | |
| CN212819022U (en) | Ultra-high molecular weight polyethylene fiber extractant recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181130 |