CN109569151A - A kind of industrial waste gas treatment device - Google Patents
A kind of industrial waste gas treatment device Download PDFInfo
- Publication number
- CN109569151A CN109569151A CN201710899041.2A CN201710899041A CN109569151A CN 109569151 A CN109569151 A CN 109569151A CN 201710899041 A CN201710899041 A CN 201710899041A CN 109569151 A CN109569151 A CN 109569151A
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- Prior art keywords
- cleaning case
- valve
- dust cleaning
- gas treatment
- waste gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- 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
- B01D53/1456—Removing acid components
- B01D53/1475—Removing carbon dioxide
-
- 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
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
-
- 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
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/91—Bacteria; Microorganisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of industrial waste gas treatment devices, including the first dust cleaning case, water scrubber, blast pipe is provided with below first dust cleaning case, the first valve is provided between first dust cleaning case and the blast pipe, guide duct is provided at the top of first dust cleaning case, the guide duct is internally provided with diversion fan, the guide duct other end is provided with the second dust cleaning case, acceleration pipeline is provided with below second dust cleaning case, the acceleration pipeline is connected with the water scrubber, exhaust fan is connected with by pipeline at the top of the water scrubber, the exhaust fan air intake is provided with dust content detector, the exhaust fan side is provided with circulation air path, the second valve is provided between the circulation air path and the blast pipe.Beneficial effect is: can not only remove the bulky grain dust in air by multiple working procedure, can also remove minute dust and noxious material and peculiar smell, and kill the germ in exhaust gas, improve treatment effect, avoid environmental pollution.
Description
Technical field
The present invention relates to technical field of environment protection equipment, especially more particularly to a kind of industrial waste gas treatment device.
Background technique
The industrial waste gas of all kinds of manufacturing enterprise's discharges is the important sources of atmosphere pollution.If big capacity industrial waste gas without
Handle it is up to standard after be discharged into atmosphere, necessarily decline atmosphere quality, bring serious harm to human health, made to national economy
At massive losses.After poisonous and harmful substance can enter human body by respiratory tract and skin in industrial waste gas, long-term low concentration or short
The contact of phase high concentration can cause the systems such as breathing, blood, the liver of human body and the temporary and permanent lesion of organ, especially benzene
And pyrene class polycyclic aromatic hydrocarbon can make the human body directly carcinogenic great attention to cause the mankind.Therefore repeatability of the present people to environmental protection
Improve very much, industrial waste gas can be just discharged into air after must being handled, enterprises many at present be only to exhaust gas into
The simple dust removal process of row is just discharged into air again and suffers, and exhaust-gas treatment is not thorough, and still will cause certain atmosphere pollution.
Summary of the invention
The object of the invention is that providing a kind of industrial waste gas treatment device to solve the above-mentioned problems.
The present invention through the following technical solutions to achieve the above objectives:
A kind of industrial waste gas treatment device, including the first dust cleaning case, water scrubber, the first dust cleaning case lower section are provided with air inlet
Pipe is provided with the first valve, is provided with wind-guiding at the top of first dust cleaning case between first dust cleaning case and the blast pipe
Pipe, the guide duct are internally provided with diversion fan, and the guide duct other end is provided with the second dust cleaning case, second dedusting
Acceleration pipeline is provided with below case, the acceleration pipeline is connected with the water scrubber, connects at the top of the water scrubber by pipeline
There is exhaust fan, the exhaust fan air intake is provided with dust content detector, and the exhaust fan side is provided with circulation air path, institute
It states and is provided with the second valve between circulation air path and the blast pipe, is provided between the circulation air path and the exhaust fan
Three valves, the exhaust fan outlet air end are provided with sterilization box, and the sterilization box side is provided with discharge pipe, the exhaust fan and institute
It states and is provided with the 4th valve between sterilization box.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, the circulation air path connects the exhaust fan
Air intake and the blast pipe, second valve and the third valve are fixed by screws in the circulation air path both ends.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, first valve, second valve,
The third valve, the 4th valve are the electromagnetic valve of one-way flow.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, first dust cleaning case is bag-type dust
Any one in device, cyclone dust collectors or electrostatic precipitator, the exhaust treatment efficiency of first dust cleaning case is not less than described
The working efficiency of second dust cleaning case.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, the second dust cleaning case inner top is provided with
Odd number block low tension pole plate is provided with one piece of electrode plate with high voltage, the low-field electrode between adjacent two pieces of low tension pole plates
Spacing between plate and the electrode plate with high voltage is 10cm-20cm.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, bottom setting is active in the second dust cleaning case
Charcoal adsorption plate, the activated carbon adsorption plate be honeycomb, at least one piece of the activated carbon adsorption plate.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, bottom is provided with water storage in the water scrubber
Case is provided with level switch on the water storage chamber interior wall, and the water tank is provided with water supply pipe, the water tank by upper bit
Lower section is provided with filter, and the filter is connected with circulating pump by pipeline, and the circulating pump water outlet is provided with spray tube,
It is provided with packing layer above the water tank, is provided with demisting cover above described filler layer.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, the spray tube is coiled in the water scrubber
Inside is equidistantly provided with rotary nozzle on the spray tube.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, the water scrubber is internally provided with layer 2-4
Described filler layer, every layer of described filler layer top are provided with the spray tube.
In order to further increase industrial waste gas treatment device exhaust-gas treatment effect, the sterilization chamber interior wall two sides are provided with two
Ultraviolet germicidal lamp is arranged, the ultraviolet germicidal lamp both ends are provided with lamp holder, and the lamp holder is fixed by screws in the sterilization
On chamber interior wall, waterproof cover is provided with outside the ultraviolet germicidal lamp, the waterproof cover is made of transparent polyurethane plastics.
The beneficial effects of the present invention are: the bulky grain dust in air can be not only removed by multiple working procedure, may be used also
To remove minute dust and noxious material and peculiar smell, and the germ in exhaust gas is killed, improve treatment effect, avoids environment dirty
Dye.
Detailed description of the invention
Fig. 1 is a kind of space multistory view of industrial waste gas treatment device of the present invention；
Fig. 2 is a kind of the second deduster structure diagram of industrial waste gas treatment device of the present invention；
Fig. 3 is a kind of water scrubber structure diagram of industrial waste gas treatment device of the present invention；
Fig. 4 is a kind of sterilization box structure diagram of industrial waste gas treatment device of the present invention.
The reference numerals are as follows:
1, the first dust cleaning case；2, the first valve；3, blast pipe；4, the second valve；5, circulation air path；6, accelerate pipeline；7, third
Valve；8, dust content detector；9, exhaust fan；10, the 4th valve；11, sterilization box；12, discharge pipe；13, water scrubber；14,
Second dust cleaning case；15, diversion fan；16, guide duct；17, low tension pole plate；18, electrode plate with high voltage；19, activated carbon adsorption plate；
20, demisting cover；21, rotary nozzle；22, packing layer；23, water supply pipe；24, water tank；25, level switch；26, filter；
27, circulating pump；28, spray tube；29, ultraviolet germicidal lamp；30, lamp holder；31, waterproof cover.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As Figure 1-Figure 4, a kind of industrial waste gas treatment device, including the first dust cleaning case 1, water scrubber 13, first dedusting
Blast pipe 3, air inlet described in bulky grain sundries and the dust that first dust cleaning case 1 is used to go in removing exhaust gas are provided with below case 1
Pipe 3 is used to be passed through exhaust gas, and the first valve 2, first dedusting are provided between first dust cleaning case 1 and the blast pipe 3
Guide duct 16 is provided at the top of case 1, the guide duct 16 is used to that exhaust gas is guided to circulate, and the guide duct 16 is internally provided with water conservancy diversion
Blower 15, the diversion fan 15 are used to accelerate exhaust gas velocity of liquid assets, and 16 other end of guide duct is provided with the second dust cleaning case
14, second dust cleaning case 14 is used to molecule dust and the peculiar smell gone in removing exhaust gas, sets below second dust cleaning case 14
It is equipped with and accelerates pipeline 6, the acceleration air duct is used to accelerate exhaust gas velocity of liquid assets by reducing bore, and the acceleration pipeline 6 connects
There is the water scrubber 13, the water scrubber 13 is used to the dust and toxic gas further gone in removing exhaust gas, the water scrubber 13
Top is connected with exhaust fan 9 by pipeline, and 9 air intake of exhaust fan is provided with dust content detector 8, the dust content
Detector 8 is used to detect the content of dust in exhaust gas, and 9 side of exhaust fan is provided with circulation air path 5, the circulation air path 5
Processing, the circulated air are re-started for exhaust gas to be imported to exhaust-gas treatment port again in the underproof situation of exhaust-gas treatment
It is provided with the second valve 4 between road 5 and the blast pipe 3, is provided with third between the circulation air path 5 and the exhaust fan 9
Valve 7,9 outlet air end of exhaust fan are provided with sterilization box 11, and the sterilization box 11 is used to kill the microorganism in exhaust gas, described
11 side of sterilization box is provided with discharge pipe 12, is provided with the 4th valve 10 between the exhaust fan 9 and the sterilization box 11.
In the present embodiment, the circulation air path 5 connects 9 air intake of exhaust fan and the blast pipe 3, second valve
Door 4 and the third valve 7 are fixed by screws in 5 both ends of circulation air path.
In the present embodiment, first valve 2, second valve 4, the third valve 7, the 4th valve 10 are equal
For the electromagnetic valve of one-way flow.
In the present embodiment, first dust cleaning case 1 is any in bag filter, cyclone dust collectors or electrostatic precipitator
One kind, the exhaust treatment efficiency of first dust cleaning case 1 are not less than the working efficiency of second dust cleaning case 14.
In the present embodiment, 14 inner top of the second dust cleaning case is provided with odd number block low tension pole plate 17, adjacent two pieces of institutes
State and be provided with one piece of electrode plate with high voltage 18 between low tension pole plate 17, the low tension pole plate 17 and the electrode plate with high voltage 18 it
Between spacing be 10cm-20cm, the low tension pole plate 17 and the electrode plate with high voltage 18 are formed in electrostatic field absorption exhaust gas
Minute dust particle.
In the present embodiment, bottom is provided with activated carbon adsorption plate 19, the activated carbon adsorption plate 19 in the second dust cleaning case 14
For the peculiar smell and harmful alcohols material gone in removing exhaust gas, the activated carbon adsorption plate 19 is honeycomb, the activated carbon adsorption
At least one piece of plate 19.
In the present embodiment, bottom is provided with water tank 24 in the water scrubber 13, is provided on 24 inner wall of water tank
Level switch 25, the level switch 25 be used to detect water in water tank 24 number, the water tank 24 leans on upper bit
It is provided with water supply pipe 23, the water supply pipe 23 is used to supplement water, the water storage when conveniently water level is too low in the water tank 24
Filter 26 is provided with below case 24, the harmful substance and sundries that the filter 26 was used in drainage avoid damage circulating pump
27, the filter 26 is connected with the circulating pump 27 by pipeline, and 27 water outlet of circulating pump is provided with spray tube 28, institute
It states and is provided with packing layer 22 above water tank 24, described filler layer 22 is used to sulfur dioxide, the carbon dioxide gas gone in removing exhaust gas
Body, demisting cover 20 is provided with above described filler layer 22, and the demisting cover 20 is used to make steam regelation at liquid, reduce useless
Water content in gas.
In the present embodiment, the spray tube 28 is coiled in inside the water scrubber 13, is equidistantly set on the spray tube 28
It is equipped with rotary nozzle 21.
In the present embodiment, the water scrubber 13 is internally provided with layer 2-4 described filler layer 22, in every layer of described filler layer 22
Side is provided with the spray tube 28.
In the present embodiment, the 11 inner wall two sides of sterilization box are provided with two rows of ultraviolet germicidal lamps 29, and the ultraviolet light kills
Bacterium lamp 29 is used to issue ultraviolet and kills bacterium, and 29 both ends of ultraviolet germicidal lamp are provided with lamp holder 30, the lamp holder 30
It is fixed by screws on 11 inner wall of sterilization box, waterproof cover 31 is provided with outside the ultraviolet germicidal lamp 29, it is described anti-
Water cover 31 is made of transparent polyurethane plastics.
Concrete operating principle of the invention are as follows: the second valve 4 described in when initial and the third valve 7 are in closed
State, first valve 2 and the 4th valve 10 are in the open state, and industrial waste gas enters described the by the blast pipe 3
One dust cleaning case 1 removes 90% dust in removing exhaust gas after first dust cleaning case 1, then enters by the guide duct 16
Second dust cleaning case 14, second dust cleaning case 14 remove molecule dust and peculiar smell in removing exhaust gas, described in exhaust gas enters
After water scrubber 13, the water flow that the rotary nozzle 21 sprays takes away the gases such as carbon dioxide, sulfur dioxide in exhaust gas, then gives up
Gas is discharged into atmosphere after entering the sterilization box 11 sterilization after the exhaust fan 9 by the discharge pipe 12, the powder
Dust content detector 8 detects the dust content in exhaust gas, and when finding standard of the dust beyond setting, the 4th valve 10 is closed
It closes, second valve 4 and the third valve 7 are opened, so that exhaust gas reenters first dust cleaning case 1 and located again
Reason.
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 all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and equivalents circle
It is fixed.
Claims (10)
1. a kind of industrial waste gas treatment device, it is characterised in that: removed including the first dust cleaning case (1), water scrubber (13), described first
It is provided with blast pipe (3) below dirt case (1), is provided with the first valve between first dust cleaning case (1) and the blast pipe (3)
(2), it is provided with guide duct (16) at the top of first dust cleaning case (1), the guide duct (16) is internally provided with diversion fan
(15), guide duct (16) other end is provided with the second dust cleaning case (14), is provided with and is added below second dust cleaning case (14)
Fast pipeline (6), the acceleration pipeline (6) are connected with the water scrubber (13), are connected at the top of the water scrubber (13) by pipeline
Have exhaust fan (9), exhaust fan (9) air intake is provided with dust content detector (8), exhaust fan (9) the side setting
Have circulation air path (5), the second valve (4), the circulated air are provided between the circulation air path (5) and the blast pipe (3)
It is provided between road (5) and the exhaust fan (9) third valve (7), exhaust fan (9) outlet air end is provided with sterilization box
(11), sterilization box (11) side is provided with discharge pipe (12), is arranged between the exhaust fan (9) and the sterilization box (11)
There is the 4th valve (10).
2. a kind of industrial waste gas treatment device according to claim 1, it is characterised in that: circulation air path (5) connection
Exhaust fan (9) air intake and the blast pipe (3), second valve (4) and the third valve (7) are solid by screw
It is scheduled on the circulation air path (5) both ends.
3. a kind of industrial waste gas treatment device according to claim 1, it is characterised in that: first valve (2), described
Second valve (4), the third valve (7), the 4th valve (10) are the electromagnetic valve of one-way flow.
4. a kind of industrial waste gas treatment device according to claim 1, it is characterised in that: first dust cleaning case (1) is
Any one in bag filter, cyclone dust collectors or electrostatic precipitator, the exhaust treatment efficiency of first dust cleaning case (1)
Not less than the working efficiency of second dust cleaning case (14).
5. a kind of industrial waste gas treatment device according to claim 1, it is characterised in that: in second dust cleaning case (14)
Top is provided with odd number block low tension pole plate (17), is provided with one piece of high-voltage electricity between adjacent two pieces of low tension pole plates (17)
Pole plate (18), the spacing between the low tension pole plate (17) and the electrode plate with high voltage (18) are 10cm-20cm.
6. a kind of industrial waste gas treatment device according to claim 1, it is characterised in that: the second dust cleaning case (14) interior bottom
It is provided with activated carbon adsorption plate (19), the activated carbon adsorption plate (19) is honeycomb, and the activated carbon adsorption plate (19) is at least
There is one piece.
7. a kind of industrial waste gas treatment device according to claim 1, it is characterised in that: the interior bottom of the water scrubber (13)
It is provided with water tank (24), is provided with level switch (25) on water tank (24) inner wall, the water tank (24) is top
Position is provided with water supply pipe (23), is provided with filter (26) below the water tank (24), the filter (26) passes through pipe
Road is connected with circulating pump (27), and circulating pump (27) water outlet is provided with spray tube (28), is set above the water tank (24)
It is equipped with packing layer (22), is provided with demisting cover (20) above described filler layer (22).
8. a kind of industrial waste gas treatment device according to claim 7, it is characterised in that: the spray tube (28) is coiled in
The water scrubber (13) is internal, is equidistantly provided with rotary nozzle (21) on the spray tube (28).
9. a kind of industrial waste gas treatment device according to claim 7, it is characterised in that: set inside the water scrubber (13)
It is equipped with layer 2-4 described filler layer (22), is provided with the spray tube (28) above every layer of described filler layer (22).
10. a kind of industrial waste gas treatment device according to claim 1, it is characterised in that: sterilization box (11) inner wall
Two sides are provided with two rows of ultraviolet germicidal lamps (29), and ultraviolet germicidal lamp (29) both ends are provided with lamp holder (30), the lamp
Seat (30) is fixed by screws on the sterilization box (11) inner wall, is provided with waterproof cover outside the ultraviolet germicidal lamp (29)
(31), the waterproof cover (31) is made of transparent polyurethane plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710899041.2A CN109569151A (en) | 2017-09-28 | 2017-09-28 | A kind of industrial waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710899041.2A CN109569151A (en) | 2017-09-28 | 2017-09-28 | A kind of industrial waste gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109569151A true CN109569151A (en) | 2019-04-05 |
Family
ID=65913694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710899041.2A Withdrawn CN109569151A (en) | 2017-09-28 | 2017-09-28 | A kind of industrial waste gas treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109569151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110870999A (en) * | 2019-11-19 | 2020-03-10 | 安徽枫慧金属股份有限公司 | Combined dust removal device for smelting furnace and use method thereof |
| CN114733324A (en) * | 2022-06-13 | 2022-07-12 | 烟台蓬莱区天阳化工有限公司 | Small-sized filler absorption tower for dissolved acetylene gas purification |
-
2017
- 2017-09-28 CN CN201710899041.2A patent/CN109569151A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110870999A (en) * | 2019-11-19 | 2020-03-10 | 安徽枫慧金属股份有限公司 | Combined dust removal device for smelting furnace and use method thereof |
| CN114733324A (en) * | 2022-06-13 | 2022-07-12 | 烟台蓬莱区天阳化工有限公司 | Small-sized filler absorption tower for dissolved acetylene gas purification |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190405 |
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| WW01 | Invention patent application withdrawn after publication |