CN206549415U - A kind of VOCs and coating cloud purifier - Google Patents
A kind of VOCs and coating cloud purifier Download PDFInfo
- Publication number
- CN206549415U CN206549415U CN201720255022.1U CN201720255022U CN206549415U CN 206549415 U CN206549415 U CN 206549415U CN 201720255022 U CN201720255022 U CN 201720255022U CN 206549415 U CN206549415 U CN 206549415U
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- liquid film
- vocs
- solvent
- gas
- flow
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/022—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by using a liquid curtain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0258—Other waste gases from painting equipments or paint drying installations
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
A kind of VOCs and coating cloud purifier, belong to Air Pollution Control and environmental protection technical field, it is characterized in that described device is made up of liquid film absorber and VOCs absorbers, its handling process is that the air-flow containing VOCs and coating cloud is passed through liquid film absorber, lyosoption spray is arrived liquid film absorber surface simultaneously, the solvent liquid film of coating cloud can be absorbed by making one layer of the working surface formation of the liquid film absorber, when the coating cloud in the air-flow is with described solvent liquid film making contact, coating cloud is just captured by the solvent, removed from air-flow, VOCs in air-flow is further removed and reclaimed by VOCs absorbers again.
Description
Technical field
The utility model is related to the purifier of a kind of VOCs and coating cloud, belongs to Air Pollution Control and environmental protection technology
Field.
Background technology
The paint spray booth and workbench of the every profession and trades such as machinery, electrical instrumentation, light industry, building, aircraft and locomotive are in application, printing
A large amount of coating clouds and organic solvent (VOCs) are produced etc. process.The coating cloud accordingly produced is generally using cascade, water curtain or rinsing type etc.
Processing unit is handled, and which part coating cloud forms paint slag after being captured by current, and solid as useless solid or danger, purification efficiency is relatively low.
And the organic solvent such as triphen therein, alcohol, ketone and ester largely discharges these because it is insoluble in water and is discharged into ambient atmosphere
The pollutant such as VOCs and coating cloud, localized region environment generates serious influence.
The utility model is designed and there is provided a kind of VOCs and the purifier of coating cloud, for handling and reclaiming related industries
VOCs and coating cloud that process is produced.
The content of the invention
The technical solution of the utility model is：A kind of VOCs and coating cloud purifier, it is characterised in that described device
It is composed in series by liquid film absorber and VOCs absorbers, wherein liquid film absorber is inhaled by gas feed, lyosoption import, liquid film
After closed tube, cooling medium cushion chamber, cooling medium inlet, solvent cushion chamber, upper perforated plate, gas vent, lower perforated plate, absorption
Cooling medium cushion chamber, cooling medium outlet, solvent outlet and gas channel composition, wherein institute after solvent cushion chamber, cooling
The gas feed stated is connected through described gas channel with gas vent, described solvent inlet through described solvent cushion chamber and
Gap is connected with gas channel between upper perforated plate and liquid film absorption tube, and the described solvent outlet solvent after described absorption delays
Rush chamber and lower perforated plate is connected with gap between liquid film absorption tube with gas channel, described cooling medium inlet is slow through cooling medium
Cooling medium cushion chamber and cooling medium outlet after rushing chamber, liquid film absorption tube and cooling down；The gas vent of liquid film absorber
Connected through VOCs absorbers with VOCs absorber gas vents, VOCs absorbers also have absorbent to add mouth and absorbent discharge
Mouthful.
According to a kind of above-mentioned VOCs and coating cloud purifier, its handling process is that the air-flow containing VOCs and coating cloud is passed through
Liquid film absorber, while lyosoption spray is arrived liquid film absorber surface, forms the working surface of the liquid film absorber
One layer can absorb the solvent liquid film of coating cloud, and when the coating cloud in the air-flow is with described solvent liquid film making contact, coating cloud is just
Captured, removed from air-flow by the solvent, the VOCs in air-flow again by VOCs absorbers obtain further remove and
Reclaim.
Liquid film absorber described in the utility model can be multitube liquid film absorber or flat board (including folded plate
Formula) liquid film absorber, the effect of various liquid film absorber demistings is about the same, specifically can be referring to related chemical industry and environmental protection equipment hand
Volume, the air-flow and liquid film can adverse current, following current and cross-flow arrangement, effect is suitable.By taking multitube liquid film absorber as an example, using many
Pipe is vertical or horizontally arranged, more than generally 3 rows, is arranged as many with vertical, maintains a certain distance, adopt between adjacent tubes and pipe
Effect with mistake row is quite a lot of, makes the liquid film of the outer tube surface one layer of solvent of formation, and the air-flow containing coating cloud is from Guan Yuguan
Between passage by when, the coating cloud in air-flow collides with liquid film, is removed from air-flow.Described multitube liquid film absorber
The lyosoption liquid film described in one layer can also be formed in the inner surface of the pipe, pipe is outer to be cooled down by cooling medium, works as gas
Stream out of pipe by when, oil smoke and dust in air-flow collide with liquid film, are removed from air-flow, effect and foregoing phase
When.
The processing technological flow of liquid film absorber described in the utility model is as follows：Air-flow containing VOCs and coating cloud is from described
Gas feed imports the gas channel of the liquid film absorber, while importing capture VOCs and paint from described lyosoption import
The solvent of mist, cooling medium is imported from the cooling medium inlet, and liquid film absorption tube is cooled down after cooling medium cushion chamber, described
Lyosoption behind the gap between solvent cushion chamber and upper perforated plate and liquid film absorption tube, flow down to form liquid film along pipe outer wall,
VOCs and coating cloud in air-flow collide in gas channel with the liquid film to be contacted, and VOCs and coating cloud are captured, from air-flow
In removed, the air-flow after purification from gas vent discharge, described solvent is through the seam between lower perforated plate and liquid film absorption tube
Gap enters solvent cushion chamber after absorption, is discharged through solvent outlet, cooling medium is after cooling medium cushion chamber by cooling medium
Outlet discharge.
Lyosoption described in the utility model is that can absorb the solvent of the coating cloud, including the coating cloud contains in itself
Solvent, mainly have higher boiling aliphatic hydrocarbon, aliphatic acid, benzene homologues, alcohol, ketone, ester and tetrachloro-ethylene etc., wherein with dimethylbenzene, fourth
Alcohol, ethylene glycol and tetrachloro-ethylene etc. are the most commonly used.Solvent described in during absorption should be kept below certain temperature so that in coating cloud
The saturated concentration for the organic matter being evaporate into acquisition procedure in gas phase is maintained at below explosion limit.Can be by pre-cooling
The modes such as the solvent and the wall of the cooling liquid film absorber stated, or two modes cooled down simultaneously, specifically can be according to institute
Depending on stating the aerial saturated vapour pressure of solvent and explosion limit data.The cooling liquid film absorber typically can using water or
Other refrigerants are as cooling medium, and the temperature of cooling medium is general below 35 DEG C, preferential 5 DEG C -15 DEG C.Using dimethylbenzene and fourth
When alcohol is as lyosoption, solvent temperature is maintained at less than 30 DEG C during coating cloud is absorbed, preferably less than 20 DEG C, meanwhile, institute
State air-flow also to control in certain temperature, generally less than 35 DEG C.During using ethylene glycol and tetrachloro-ethylene as lyosoption, absorb
Solvent temperature can be normal temperature.When the air-flow is maintained at relatively low temperature in coating cloud absorption process, the lyosoption is in itself
Volatile quantity very little, containing organic moiety also with coating cloud by the solvent absorption in coating cloud, both subtract each other, always having in air-flow
Machine thing changes of contents less, and decrease to some degree.The spray of the lyosoption can be interlocked with spraying operation, work as spraying
Coating cloud reach liquid film absorber when, start solvent spray-absorption, stop at the end of spraying, to reduce the volatilization of the solvent.
VOCs absorbers are additionally provided with after liquid film absorber described in the utility model, further to remove in air-flow
VOCs, can be using high boiling organic solvent such as ethylene glycol and ore deposit, vegetable oil etc. as absorbent, to the alcohol in air-flow, ketone etc.
Water soluble organic substance, can also be absorbed using aqueous solution etc..Described absorber can use general gas-liquid mass transfer (contact) equipment such as bubbling
Tower, packed tower and plate column etc., specifically can be referring to related chemical industry equipment handbook.By taking bubble tower as an example, structure is generally cylindrical cross section,
Material is generally steel.Pending gas is imported from bubbling tower bottom, by gas distributor, through gas liquid reaction area and absorbent
After generation absorbing reaction, discharged by top.The static liquid level of absorbing liquid is generally more than 3cm, preferably 10- in bubble tower
30cm.Gas-liquid contact time is generally more than 0.2s, and preferably 0.5-15 seconds, specific visual design parameter setting, time of contact was long,
Clearance is high.The VOCs Posterior circles that absorbent can absorb through removing are used.
When air-flow described in the utility model is by liquid film absorber, the humidity in air-flow should also be maintained at certain value with
Under, make air-flow when by liquid film absorber, the vapor in air-flow will not gas flow temperature reduction and condensation and dewfall is separated out, typically
When gas flow temperature is 25 DEG C, relative humidity should be below 80%, humidity preferably less than 60%, and relevant parameter can check the heat of air
Mechanical Data handbook.
Air-flow described in the utility model typically should be more than 0.1m/s in liquid film absorber interior air-flow speed, preferably
0.5m/s-3m/s, described air-flow is generally more than 0.2s in the liquid film absorber residence time, preferably 0.5-10 seconds, specifically may be used
Depending on parameter settings such as clearances, the residence time is long, and clearance is high.Solvent used in liquid film absorber can be recycled, typically
Solvent or separation of solid and liquid should be changed when the composition of wherein solids paint reaches more than 10%, to prevent influenceing flowing after solvent retrogradation
Property.The spray flux of solvent does not have specific requirement, can typically make absorption pipe surface formation liquid film, and thickness of liquid film typically exists
More than 0.3mm, preferably thickness of liquid film is between 1mm-3mm.Absorber typically uses metal material such as stainless steel, also can be using modeling
The materials such as material, sorbent surface can cover one layer of plastics, polytetrafluoroethylene (PTFE) and nylon etc. to the related lyosoption surface
The larger material of power, with the flowing of favourable solvent.
The preferred dimethylbenzene of lyosoption, butanol, ethylene glycol and the tetrachloro-ethylene of liquid film absorber described in the utility model
One or more of mixtures, effect is about the same, and coating cloud can be re-used after absorbing after the processing such as modulation.
Compared with prior art, the utility model has the advantage of：Using specific solvent at a certain temperature described
Liquid film absorber in absorb and remove VOCs and coating cloud that spraying process is produced, the VOCs in air-flow again by further absorbing after
Removed, it is low with removal efficiency height, operating cost, it is simple to operate, it is adapted to promote the use of.
Brief description of the drawings
Fig. 1 illustrates for a kind of liquid film absorber structure of VOCs and coating cloud purifier used in the utility model embodiment
Figure, Fig. 2 is A-A profiles, and Fig. 3 is a kind of system flow chart of the purifier of VOCs and coating cloud.
In figure：101 liquid film absorbents；102VOCs absorbers；1 gas feed；2 lyosoption imports；3 liquid film absorption tubes；
4 cooling medium cushion chambers；5 cooling medium inlets；6 solvent cushion chambers；Perforated plate on 7；8 gas vents；9 times perforated plates；10 inhale
Solvent cushion chamber after receipts；Cooling medium cushion chamber after 11 coolings；12 cooling mediums are exported；13 solvent outlets；14 gas channels；
15VOCs absorber gas vents；16 absorbents add mouth；17 absorbent outlets.
Embodiment
The utility model is described in further detail below in conjunction with drawings and examples.
Embodiment 1：Liquid film absorber such as Fig. 1 institutes of a kind of VOCs and coating cloud described in the utility model purifier
Show.Described gas feed (1) is connected through described gas channel (14) with gas vent (8), described lyosoption import
(2) connected through described solvent cushion chamber (6) and upper perforated plate (7) with gap between liquid film absorption tube with gas channel (14), institute
The solvent outlet (12) stated gap between solvent cushion chamber (10) and lower perforated plate (9) and liquid film absorption tube after described absorption
Connected with gas channel (14), described cooling medium inlet (5) is through cooling medium cushion chamber (4), liquid film absorption tube (3) and cold
But cooling medium cushion chamber (11) is connected with cooling medium outlet (12) after.
Processing technological flow is as follows：Air-flow containing coating cloud imports the air-flow of liquid film absorber from described gas feed (1)
Passage (14), while the solvent of capture coating cloud is imported from described lyosoption import (2), from described cooling medium inlet
(5) cooling medium is imported, liquid film absorption tube (3) is cooled down after cooling medium cushion chamber (4), described solvent is through solvent cushion chamber
(6) behind the gap between upper perforated plate (7) and liquid film absorption tube, flow down to form liquid film along pipe outer wall, the coating cloud in air-flow is in gas
Collide in circulation road (14) and contact with the liquid film, coating cloud is captured, is removed from air-flow, the air-flow after purification from
Gas vent (8) is discharged, solvent after described solvent enters absorption through the gap between lower perforated plate (9) and liquid film absorption tube (3)
Cushion chamber (10), discharges through solvent outlet (12) and recycles, cooling medium is after cooling medium cushion chamber (11) after cooling
(12) discharge is exported by cooling medium.
The present embodiment is painted using resinae, and wherein solvent composition is the mixture of dimethylbenzene and butanol, solvent and paint
Ratio is about 4：1, gas flow is about 120m3/ h, air-flow gas feed is about 25 DEG C, and humidity is about 65%, and air-flow gas goes out
About 20 DEG C of mouth, the gas feed coating cloud concentration in air-flow is about 150mg/m3-200mg/m3.Capture the solvent point that coating cloud is used
Not Wei dimethylbenzene, butanol, ethylene glycol and tetrachloro-ethylene, lyosoption inlet temperature is about 15 DEG C, and flow is about 300L/h.Cooling
Medium is the cooling water of about 10 DEG C of temperature, and flow is about 300L/h.
Described liquid film absorber uses stainless steel, overall dimensions be about 600 × 300 × 500 (unit is millimeter,
Similarly hereinafter), wherein cooling medium cushion chamber, solvent cushion chamber, absorb after solvent cushion chamber and cooling after cooling medium cushion chamber it is equal
For 500 × 300 × 50, gas flow channel is 500 × 300 × 300, and described upper perforated plate, aperture is about Φ 36, longitudinal direction 6
Row, often arranges 5, laterally 10 rows, often arranges 3, described lower perforated plate, aperture is about Φ 40, other ibid perforated plates, two perforation
On the same axis, liquid film absorption tube external diameter is about Φ 32 at the center of plate.
Coating cloud before and after after processing in air-flow calculates removal effect after adsorbing demarcation of weighing.Measuring coating cloud is averagely gone
Except rate is about 99%, it is substantially the same using the effect of different lyosoptions.
Embodiment 2：Gas flow is about 180m3/ h, other conditions be the same as Example 1.The average removal of measuring coating cloud
Rate is about 97%.
Embodiment 3：Gas is absorbed by solvent absorber again after embodiment 2 is removed coating cloud through liquid film absorber, and Fig. 3 is this
A kind of system flow chart of VOCs and coating cloud purifier described in utility model.The gas vent (8) of liquid film absorber (101)
Connected through VOCs absorbers (102) with VOCs absorbers gas vent (15), absorbent adds mouth (16) by absorbent and added,
Discharged through absorbent outlet (17).
The VOCs, absorber uses bubble absorbing tower, and size is Φ 200mm × 600mm, and material is steel, air-flow warp
Absorption tower lower gas distributor is imported, and the gas distributor is porous plate, and aperture is about Φ 2mm, totally 30 uniform, additions
Absorbent in the high about 15cm of gas distributor upper stationary, absorb agent flux about 1L/min.The paint mist purifying means gas
VOCs concentration in the air-flow of outlet is about 100mg/m3-150mg/m3, ethylene glycol and clear water, absorbent is respectively adopted in absorbent
Temperature is room temperature.Experimental result：The solvent that liquid film absorber capture coating cloud is used is respectively dimethylbenzene, butanol, ethylene glycol and four
During vinyl chloride, during using ethylene glycol as absorbent, VOCs concentration respectively may be about in the air-flow of VOCs absorber gas vents
15mg/m3-20mg/m3、10mg/m3-15mg/m3、5mg/m3-10mg/m3And 25mg/m3-35mg/m3；Absorption is used as using clear water
During agent, VOCs concentration respectively may be about 80mg/m in the air-flow of VOCs absorber gas vents3-120mg/m3、35mg/m3-45mg/
m3、10mg/m3-15mg/m3And 75mg/m3-105mg/m3。
It should be noted that above example is merely to illustrate the technical solution of the utility model, guarantor of the present utility model
Protect scope not limited to this.For those skilled in the art, it is all within spirit of the present utility model and principle, to each reality
Apply the technical scheme described in example to modify, or any equivalent substitution, modification, change are carried out to some technical characteristics therein
Change and improvement etc., should be included within protection domain of the present utility model.
Claims (6)
1. a kind of VOCs and coating cloud purifier, it is characterised in that described device is inhaled by liquid film absorber (101) and VOCs
Receive device (102) composition, wherein liquid film absorber (101) by gas feed (1), lyosoption import (2), liquid film absorption tube (3),
Cooling medium cushion chamber (4), cooling medium inlet (5), solvent cushion chamber (6), upper perforated plate (7), gas vent (8), under wear
Cooling medium cushion chamber (11), cooling medium outlet (12), solvent are arranged after solvent cushion chamber (10), cooling after orifice plate (9), absorption
(13) and gas channel (14) composition are exported, wherein described gas feed (1) goes out through described gas channel (14) with gas
Mouth (8) connection, described solvent inlet (2) is through described solvent cushion chamber (6) and upper perforated plate (7) and liquid film absorption tube (3)
Between gap connected with gas channel (14), described solvent outlet (13) after described absorption solvent cushion chamber (10) and under
Gap is connected with gas channel (14) between perforated plate (9) and liquid film absorption tube (3), and described cooling medium inlet (5) is through cooling
Cooling medium cushion chamber (11) is connected with cooling medium outlet (12) after medium cushion chamber (4), liquid film absorption tube (3) and cooling；
The gas vent (8) of liquid film absorber (101) is connected through VOCs absorbers (102) with VOCs absorbers gas vent (15),
VOCs absorbers (102) also have absorbent to add mouth (16) and absorbent outlet (17).
2. device according to claim 1, it is characterised in that the liquid film absorber includes multitube and board-like liquid film absorbs
Device.
3. device according to claim 1, it is characterised in that described VOCs absorbers are general gas-liquid mass transfer (contact) equipment,
Including bubble tower, packed tower and plate column.
4. device according to claim 1 or 2, it is characterised in that liquid film absorber interior air-flow speed is more than 0.1m/s,
Residence time of the described air-flow in liquid film absorber is more than 0.2s.
5. the device according to claim 1 or 3, it is characterised in that when the VOCs absorbers are bubble tower, air-flow is in drum
It is more than 0.2s to steep gas-liquid contact time in tower and inhale.
6. device according to claim 1 or 2, it is characterised in that the thickness of liquid film of the liquid film absorber 0.3mm with
On.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016105729695 | 2016-07-04 | ||
| CN201610572969.5A CN106215630A (en) | 2016-07-04 | 2016-07-04 | The purification method of a kind of coating cloud and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206549415U true CN206549415U (en) | 2017-10-13 |
Family
ID=57531460
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610572969.5A Pending CN106215630A (en) | 2016-07-04 | 2016-07-04 | The purification method of a kind of coating cloud and device |
| CN201710144078.4A Withdrawn CN107569976A (en) | 2016-07-04 | 2017-03-01 | A kind of VOCs and coating cloud purification method and device |
| CN201720255022.1U Expired - Fee Related CN206549415U (en) | 2016-07-04 | 2017-03-01 | A kind of VOCs and coating cloud purifier |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610572969.5A Pending CN106215630A (en) | 2016-07-04 | 2016-07-04 | The purification method of a kind of coating cloud and device |
| CN201710144078.4A Withdrawn CN107569976A (en) | 2016-07-04 | 2017-03-01 | A kind of VOCs and coating cloud purification method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN106215630A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2735843C1 (en) * | 2019-10-14 | 2020-11-09 | Общество с Ограниченной Ответственностью "ДИСТИЛИУМ" | Method of organochlorine compounds removal from oil |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106076030A (en) * | 2016-07-27 | 2016-11-09 | 黄立维 | The purification method of a kind of industry lampblack and device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007327658A (en) * | 2006-06-06 | 2007-12-20 | Japan Steel Works Ltd:The | Single effect absorption-type cold generating/outputting device |
| JP5904351B2 (en) * | 2009-03-16 | 2016-04-13 | 藤本 雅久 | Absorption cooler, heat exchanger |
| CN101607144B (en) * | 2009-07-20 | 2011-12-07 | 姚立猛 | Purifying and recovery method of organic waste gas |
| CN202460426U (en) * | 2012-03-07 | 2012-10-03 | 凯恩德利(北京)科贸有限公司 | Falling film absorption column |
| CN103977668A (en) * | 2014-05-29 | 2014-08-13 | 厦门市大净环保科技有限公司 | Combined type paint mist purification device |
-
2016
- 2016-07-04 CN CN201610572969.5A patent/CN106215630A/en active Pending
-
2017
- 2017-03-01 CN CN201710144078.4A patent/CN107569976A/en not_active Withdrawn
- 2017-03-01 CN CN201720255022.1U patent/CN206549415U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2735843C1 (en) * | 2019-10-14 | 2020-11-09 | Общество с Ограниченной Ответственностью "ДИСТИЛИУМ" | Method of organochlorine compounds removal from oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107569976A (en) | 2018-01-12 |
| CN106215630A (en) | 2016-12-14 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20171013 Termination date: 20200301 |