CN115090079A - Acid mist absorption device and method - Google Patents
Acid mist absorption device and method Download PDFInfo
- Publication number
- CN115090079A CN115090079A CN202210816834.4A CN202210816834A CN115090079A CN 115090079 A CN115090079 A CN 115090079A CN 202210816834 A CN202210816834 A CN 202210816834A CN 115090079 A CN115090079 A CN 115090079A
- Authority
- CN
- China
- Prior art keywords
- water seal
- acid mist
- seal layer
- section area
- water
- 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
Images
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model provides an acid mist absorbing device, including the confined barrel, set up the baffle in the barrel, separate the inner space of barrel for upper cylinder section region, lower cylinder section region, set up the connecting cylinder on the baffle, the regional top of upper cylinder section sets up the water-locator, the regional bottom of upper cylinder section sets up first water seal, the liquid level height of first water seal flushes with the one end of connecting cylinder, set up the filler in the upper cylinder section region, be located between water-locator and the first water seal, the one end of connecting pipe extends into in the first water seal, the other end communicates with the atmosphere, the regional bottom of lower cylinder section sets up the second water seal, and the liquid level height of second water seal is greater than the height of the connecting cylinder other end, set up acid mist import on the barrel, the overflow mouth, the drain mouth, the acid mist import is located between filler and the first water seal, the overflow mouth is located the top of drain mouth, and all correspond the second water seal. The invention has simple structure, no maintenance, small occupied area and low consumption, and can effectively meet the actual requirements of enterprises.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to an acid mist absorption device and method.
Background
Hydrochloric acid is an aqueous solution of hydrogen chloride, is also called hydrochloric acid, belongs to strong unitary inorganic acid, and has wide industrial application. The hydrochloric acid is colorless and transparent liquid, has strong pungent smell, and has high corrosivity. The concentrated hydrochloric acid (mass fraction is about 31%) has extremely strong volatility, so that hydrogen chloride gas can volatilize after a container containing the concentrated hydrochloric acid is opened, and the hydrogen chloride gas is combined with water vapor in the air to generate small drops of hydrochloric acid, so that acid mist is generated.
In industrial application, most of the hydrochloric acid storage tanks are glass fiber reinforced plastic storage tanks, the design is carried out according to a normal-pressure container, and a large amount of acid mist overflows through an empty pipe when liquid is fed, so that the acid mist is absorbed by an acid mist absorber to form low-concentration hydrochloric acid and then is discharged to a sewage treatment system. For hydrochloric acid stored statically, a positive pressure water seal mode is mostly adopted to prevent acid mist from overflowing, and in order to prevent a glass fiber reinforced plastic storage tank from being damaged by negative pressure in the acid release process, negative pressure water seal is mostly adopted to protect. The three sets of devices are usually independently installed and used, have larger occupied area, need to be opened for a long time and have larger water consumption, and also cause the higher load of a sewage treatment system
Therefore, how to design an acid mist absorption device with simple structure and low water consumption is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
One of the purposes of the present invention is to provide an acid mist absorbing device, which has a simple structure, is maintenance-free, occupies a small area, has a small consumption, and can effectively meet the actual requirements of enterprises.
The second purpose of the invention is to provide a method for absorbing acid mist in a hydrochloric acid storage tank by adopting the acid mist absorption device, which is simple and convenient to operate and can ensure the safety and environmental protection of the hydrochloric acid storage tank in the processes of acid feeding, standing and acid discharging.
The technical scheme for realizing one purpose of the invention is as follows: the acid mist absorption device comprises a closed barrel, wherein a partition plate is arranged in the barrel, the inner space of the barrel is sequentially divided into an upper barrel section area and a lower barrel section area which are mutually independent from top to bottom, a connecting barrel is arranged on the partition plate, one end of the connecting barrel is positioned in the upper barrel section area, the other end of the connecting barrel is positioned in the lower barrel section area, a water distribution pipe is arranged at the top of the upper barrel section area, a first water seal layer is arranged at the bottom of the upper barrel section area, the liquid level of the first water seal layer is flush with one end of the connecting barrel, a filler is arranged in the upper barrel section area and positioned between the water distribution pipe and the first water seal layer, one end of a connecting pipe extends into the first water seal layer, the other end of the connecting pipe is communicated with the atmosphere, a second water seal layer is arranged at the bottom of the lower barrel section area, the liquid level of the second water seal layer is higher than the other end of the connecting barrel, an acid mist inlet, an overflow port is arranged on the barrel, The acid mist inlet is positioned between the filler and the first water seal layer, and the overflow port is positioned above the drainage port and corresponds to the second water seal layer.
The connecting cylinder extends in a vertical direction.
The water inlet of the water distribution pipe is provided with a first valve, and the drain port is provided with a second valve.
One end of the connecting pipe is located in the upper cylinder section area and vertically extends downwards to enter the first water seal layer, and the other end of the connecting pipe extends out of the cylinder and is of an inverted U-shaped structure.
The acid mist inlet is directed upward toward the packing.
The second technical scheme for realizing the aim of the invention is as follows: the method for absorbing the acid mist in the hydrochloric acid storage tank by adopting any one of the acid mist absorption devices comprises the following steps:
1) an acid mist inlet of the acid mist absorption device is connected with an empty pipe of the hydrochloric acid storage tank;
2) when the hydrochloric acid storage tank enters acid, the water distribution pipe and the exhaust port are opened, and the hydrochloric acid storage tank absorbs acid mist exhausted by the empty pipe to generate diluted hydrochloric acid which is exhausted by the exhaust port;
3) after the hydrochloric acid storage tank finishes feeding acid, the drain port is closed, the water distribution pipe is kept open until water is discharged from the overflow port, the water distribution pipe is closed, a first water seal layer with stable liquid level is formed in the upper cylinder section area, negative pressure water seal is formed when the hydrochloric acid storage tank discharges acid, a second water seal layer with stable liquid level is formed in the lower cylinder section area, and positive pressure water seal is formed when the hydrochloric acid storage tank stands.
Further, the dilute hydrochloric acid discharged from the discharge port in the step 2) is recycled or discharged to a sewage treatment system.
Preferably, the liquid level of the first water sealing layer in the step 3) exceeds 50mm of one end of the connecting pipe.
Preferably, the liquid level of the second water seal layer in the step 3) exceeds the other end of the connecting cylinder by 100 mm.
Adopt above-mentioned technical scheme to have following beneficial effect:
1. the acid mist absorption device comprises a closed barrel, wherein a partition plate is arranged in the barrel, and the inner space of the barrel is sequentially divided into an upper barrel section area and a lower barrel section area which are mutually independent from top to bottom, namely, the upper barrel section area and the lower barrel section area are divided into two independent barrel-shaped spaces along the height direction. The partition board is provided with a connecting cylinder, one end of the connecting cylinder is located in the upper cylinder section area, the other end of the connecting cylinder is located in the lower cylinder section area, and the connecting cylinder penetrates through the partition board. The acid mist storage device is characterized in that a water distribution pipe is arranged at the top of the upper cylinder section area, a first water seal layer is arranged at the bottom of the upper cylinder section area, the liquid level of the first water seal layer is flush with one end of the connecting cylinder, a filler is arranged in the upper cylinder section area and is positioned between the water distribution pipe and the first water seal layer, the water distribution pipe and the filler are matched to form an acid mist absorption section, when the storage container is in an acid inlet state, generated acid mist enters the upper cylinder section area, is uniformly dispersed through the filler and is absorbed by water curtain sprayed by the water distribution pipe in a countercurrent contact manner to form dilute absorption liquid, and the acid mist absorption section also corresponds to the acid inlet stage of the storage container during working. One end of a connecting pipe extends into the first water seal layer, the other end of the connecting pipe is communicated with the atmosphere and is matched with the first water seal layer to form a negative pressure water seal section, when the storage container is used for discharging acid, negative pressure is formed inside the storage container, usually, an external pressure container is adopted for the storage container, and through the matching of the first water seal layer and the connecting pipe, on the basis of balancing the internal pressure of the storage container and avoiding instability damage of the storage container possibly caused by internal negative pressure, acid mist in the storage container is prevented from being discharged outside, so that the water seal effect is achieved, namely, the negative pressure water seal section corresponds to the acid discharge stage of the storage container during working. The bottom of the lower cylinder section area is provided with a second water seal layer, the liquid level height of the second water seal layer is larger than the height of the other end of the connecting cylinder, the second water seal layer is matched with the connecting cylinder to form a positive pressure water seal section, and when the storage container is in a standing state, the positive pressure water seal section prevents acid mist in the storage container from being discharged outwards to play a water seal role. Set up acid mist import, overflow mouth, row's clean mouth on the barrel, the acid mist import is located and packs and first water seal, the overflow mouth is located the top of arranging clean mouth, and all corresponds second water seal, and wherein, the acid mist import is used for linking to each other with the blank pipe of the storage container that produces the acid mist, and the overflow mouth is used for guaranteeing the liquid level height of first water seal, second water seal, avoids the problem that human operation error causes the water seal not enough in height, arranges clean mouth and is used for discharging the thin absorption liquid that generates for recycle or arrange to sewage treatment system and concentrate. The acid mist absorption, the negative pressure water seal and the positive pressure water seal are integrated in the cylinder body, so that the invention has the advantages of small volume and small occupied area, and the dilute absorption liquid obtained by acid mist absorption can be used for the negative pressure water seal and the positive pressure water seal, thereby effectively saving resources on the basis of avoiding environmental pollution.
2. One end of the connecting pipe is located in the upper cylinder section area and vertically extends downwards to enter the first water seal layer, the other end of the connecting pipe extends out of the cylinder body and is of an inverted U-shaped structure, and on the basis that negative pressure water seals are formed on connected storage containers, impurities are prevented from entering the first water seal layer, so that the whole acid mist absorption device is free of maintenance.
3. The method for absorbing the acid mist of the hydrochloric acid storage tank by using the acid mist absorption device carries out targeted control on the acid inlet state, the acid discharge state and the standing state of the hydrochloric acid storage tank, and keeps the liquid level heights of the first water seal layer and the second water seal layer through the designed connecting cylinder and the overflow port on the basis of meeting the requirements of acid mist absorption, acid discharge negative pressure water seal and standing positive pressure water seal and further avoiding environmental pollution caused by overflow of the acid mist, so that the problem of insufficient height of the first water seal layer or the second water seal layer caused by manual operation errors can be effectively avoided, the safety of the device is ensured, and the environmental protection requirement is met.
The following description is further described with reference to the accompanying drawings and the detailed description.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the attached drawing, 1 is a cylinder, 2 is a partition board, 3 is an upper cylinder section area, 4 is a lower cylinder section area, 5 is a connecting cylinder, 6 is a water distribution pipe, 7 is a first water seal layer, 8 is a filler, 9 is a connecting pipe, 10 is a second water seal layer, 11 is an acid mist inlet, 12 is an overflow port, 13 is a drain port, a is a first valve, and b is a second valve.
Detailed Description
Example 1
Referring to fig. 1, a specific embodiment of an acid mist absorbing device is shown. The acid mist absorption device comprises a closed cylinder body 1, and is specifically made of glass fiber reinforced plastic materials, the diameter is 2500mm, the height is 3000mm, the wall thickness is 15mm, the elastic modulus E of the glass fiber reinforced plastic is 14100-2400 MPa, the safety coefficient m is 5, the circumferential tensile strength is 45-60MPa, the axial tensile strength is 120-180MPa, the design pressure is 0.07MPa, and the design temperature is normal temperature. The barrel 1 is provided with the partition plate 2, the inner space of the barrel 1 is sequentially divided into an upper barrel section area 3 and a lower barrel section area 4 which are mutually independent from top to bottom, and generally, the length of the upper barrel section area along the height direction is greater than that of the lower barrel section area along the height direction. The partition board 2 is provided with a connecting cylinder 5, one end of the connecting cylinder 5 is located in the upper cylinder section area 3, the other end of the connecting cylinder 5 is located in the lower cylinder section area 4, specifically, the connecting cylinder 5 is arranged in the middle of the partition board and extends in the vertical direction, and obviously, the other end of the connecting cylinder and the bottom of the lower cylinder section area are provided with a spacing space. The top of the upper barrel section area 3 is provided with a water distribution pipe 6, and a water inlet of the water distribution pipe is provided with a first valve a. The bottom of the upper barrel section area 3 is provided with a first water seal layer 7, the liquid level of the first water seal layer 7 is flush with one end of the connecting barrel 5, and the upper barrel section area 3 is provided with a filler 8 which is specifically a ball ring filler and is positioned between the water distribution pipe 6 and the first water seal layer 7. One end of a connecting pipe 9 extends into the first water seal layer 7, and the other end is communicated with the atmosphere, in this embodiment, one end of the connecting pipe 9 is located in the upper cylinder section area 3, vertically extends downwards to enter the first water seal layer 7, the height of the connecting pipe 9 immersed in the first water seal layer is 50mm, and the other end of the connecting pipe 9 extends out of the cylinder 1 and is of an inverted U-shaped structure. The bottom of the lower barrel section area 4 is provided with a second water seal layer 10, the liquid level height of the second water seal layer 10 is larger than the height of the other end of the connecting barrel 5, and specifically, the height of the other end of the connecting barrel immersed in the second water seal layer is 100 mm. The acid mist inlet 11 is positioned between the filler 8 and the first water seal layer 7, and particularly, the acid mist inlet 11 is positioned in the middle of the upper barrel section area and faces upwards to the filler 8. The overflow port 12 is located the top of row's clean mouth 13, and all corresponds second water seal 10, and is specific, arranges clean mouthful below that is located the connecting cylinder other end, and is provided with second valve b, and the overflow port is 100mm apart from the height of the connecting cylinder other end.
Example 2
The method for absorbing acid mist in the hydrochloric acid storage tank by using the acid mist absorption device in the embodiment 1 comprises the following steps:
1) connecting an acid mist inlet of the acid mist absorption device with an empty pipe of the hydrochloric acid storage tank by using a pipeline;
2) when concentrated hydrochloric acid (the mass fraction is about 31%) is added into a hydrochloric acid storage tank, a large amount of acid mist is generated, the acid mist enters an upper barrel section area through an empty pipe and an acid mist inlet, is dispersed through filler, a first valve and a second valve are opened, a water curtain sprayed by a water distribution pipe is in countercurrent contact with the dispersed acid mist to form dilute hydrochloric acid (lower than 20%), the dilute hydrochloric acid forms a first water seal layer at the bottom of the upper barrel section area, then overflows to a lower barrel section area through a connecting barrel and is discharged from a discharge port for recycling or is discharged to a sewage treatment system for centralized treatment;
3) after the hydrochloric acid storage tank is filled with acid, the second valve is closed, the first valve is kept open, namely the water distribution pipe keeps a spraying water curtain to dilute the first water seal layer (the liquid level of the first water seal layer is kept stable), the liquid level of the second water seal layer gradually rises until water is discharged from an overflow port, namely the liquid level of the second water seal layer is stable, the first valve is closed, the first water seal layer with stable liquid level is formed in an upper cylinder section area, when the hydrochloric acid storage tank discharges stored concentrated hydrochloric acid, negative pressure is formed in the inner space of the hydrochloric acid storage tank, air is supplemented to the hydrochloric acid storage tank through the first water seal layer through a connecting pipe, air pressure balance is maintained, negative pressure water seal is formed on the hydrochloric acid storage tank, the second water seal layer with stable liquid level is formed in a lower cylinder section area, and positive pressure water seal is formed when the hydrochloric acid storage tank is kept stand.
Claims (9)
1. An acid mist absorption device, which is characterized in that: comprises a closed cylinder body (1),
the barrel (1) is internally provided with a clapboard (2) which divides the inner space of the barrel (1) into an upper barrel section area (3) and a lower barrel section area (4) which are mutually independent from top to bottom, the clapboard (2) is provided with a connecting barrel (5), one end of the connecting barrel (5) is positioned in the upper barrel section area (3), the other end is positioned in the lower barrel section area (4),
the top of the upper barrel section area (3) is provided with a water distribution pipe (6), the bottom of the upper barrel section area (3) is provided with a first water seal layer (7), the liquid level of the first water seal layer (7) is flush with one end of the connecting barrel (5), a filler (8) is arranged in the upper barrel section area (3) and is positioned between the water distribution pipe (6) and the first water seal layer (7), one end of a connecting pipe (9) extends into the first water seal layer (7), and the other end is communicated with the atmosphere,
a second water seal layer (10) is arranged at the bottom of the lower cylinder section area (4), the liquid level height of the second water seal layer (10) is greater than the height of the other end of the connecting cylinder (5),
the cylinder body (1) is provided with an acid mist inlet (11), an overflow port (12) and a drain port (13),
the acid mist inlet (11) is located between the filler (8) and the first water seal layer (7), and the overflow port (12) is located above the drain port (13) and corresponds to the second water seal layer (10).
2. The acid mist absorbing device of claim 1, wherein: the connecting cylinder (5) extends in the vertical direction.
3. The acid mist absorbing device of claim 1, wherein: the water inlet of the water distribution pipe (6) is provided with a first valve (a), and the drain port (13) is provided with a second valve (b).
4. The acid mist absorbing device of claim 1, wherein: one end of the connecting pipe (9) is located in the upper barrel section area (3), vertically extends downwards to enter the first water seal layer (7), and the other end of the connecting pipe (9) extends out of the barrel body (1) and is of an inverted U-shaped structure.
5. The acid mist absorbing device of claim 1, wherein: the acid mist inlet (11) faces upwards towards the packing (8).
6. A method for absorbing acid mist in a hydrochloric acid storage tank by using the acid mist absorption device of any one of claims 1 to 5, which is characterized by comprising the following steps:
1) an acid mist inlet of the acid mist absorption device is connected with an empty pipe of the hydrochloric acid storage tank;
2) when the hydrochloric acid storage tank enters acid, the water distribution pipe and the exhaust port are opened, and the hydrochloric acid storage tank absorbs acid mist exhausted by the empty pipe to generate diluted hydrochloric acid which is exhausted by the exhaust port;
3) after the hydrochloric acid storage tank finishes feeding acid, the drain port is closed, the water distribution pipe is kept open until water is discharged from the overflow port, the water distribution pipe is closed, a first water seal layer with stable liquid level is formed in the upper cylinder section area, negative pressure water seal is formed when the hydrochloric acid storage tank discharges acid, a second water seal layer with stable liquid level is formed in the lower cylinder section area, and positive pressure water seal is formed when the hydrochloric acid storage tank stands.
7. The method of claim 6, wherein the dilute hydrochloric acid discharged from the discharge port in the step 2) is recycled or discharged to a sewage treatment system.
8. The method of claim 6, wherein the liquid level of the first water seal layer in step 3) is 50mm higher than one end of the connecting pipe.
9. The method of claim 6, wherein the liquid level of the second water sealing layer in step 3) exceeds the other end of the connecting cylinder by 100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210816834.4A CN115090079A (en) | 2022-07-12 | 2022-07-12 | Acid mist absorption device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210816834.4A CN115090079A (en) | 2022-07-12 | 2022-07-12 | Acid mist absorption device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115090079A true CN115090079A (en) | 2022-09-23 |
Family
ID=83297419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210816834.4A Pending CN115090079A (en) | 2022-07-12 | 2022-07-12 | Acid mist absorption device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115090079A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2176820Y (en) * | 1993-11-30 | 1994-09-14 | 天津市大港区振东玻璃钢厂 | Acid-fume absorber |
| WO2010006848A1 (en) * | 2008-07-17 | 2010-01-21 | Ae&E Austria Gmbh & Co Kg | System and method for the absorption of pollutants in gases |
| CN103521037A (en) * | 2012-07-04 | 2014-01-22 | 中国石油化工股份有限公司 | Water-saving double-water seal hydrogen chloride gas absorption device |
| CN204656293U (en) * | 2015-01-13 | 2015-09-23 | 中材国际环境工程（北京）有限公司 | There is the recyclable ammonia absorption device of pressure balance function |
| CN217887472U (en) * | 2022-07-12 | 2022-11-25 | 重庆天原化工有限公司 | Acid mist absorption device |
-
2022
- 2022-07-12 CN CN202210816834.4A patent/CN115090079A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2176820Y (en) * | 1993-11-30 | 1994-09-14 | 天津市大港区振东玻璃钢厂 | Acid-fume absorber |
| WO2010006848A1 (en) * | 2008-07-17 | 2010-01-21 | Ae&E Austria Gmbh & Co Kg | System and method for the absorption of pollutants in gases |
| CN102099093A (en) * | 2008-07-17 | 2011-06-15 | Ae及E奥地利有限责任两合公司 | System and method for the absorption of pollutants in gases |
| CN103521037A (en) * | 2012-07-04 | 2014-01-22 | 中国石油化工股份有限公司 | Water-saving double-water seal hydrogen chloride gas absorption device |
| CN204656293U (en) * | 2015-01-13 | 2015-09-23 | 中材国际环境工程（北京）有限公司 | There is the recyclable ammonia absorption device of pressure balance function |
| CN217887472U (en) * | 2022-07-12 | 2022-11-25 | 重庆天原化工有限公司 | Acid mist absorption device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217887472U (en) | Acid mist absorption device | |
| CN202203454U (en) | Positive and negative pressure water seal safety system for isolating waste gas | |
| CN204816203U (en) | A acid mist purification tower for handling acid gas | |
| CN115090079A (en) | Acid mist absorption device and method | |
| CN211189165U (en) | Vacuum buffer absorption device | |
| CN204957456U (en) | Eliminate hydrochloric acid storage device that acid mist discharged | |
| CN102502131B (en) | Hydrochloric acid storage tank and breathing valve thereof | |
| CN215246796U (en) | Negative pressure water seal tank | |
| CN210479706U (en) | Water seal arrangement of acrylonitrile storage tank | |
| CN215673589U (en) | Water seal tank capable of effectively isolating working gas condensate from sealing liquid | |
| CN210619117U (en) | Methanol storage tank oil gas recovery device | |
| CN209922077U (en) | Waste acid storage tank capable of preventing leakage | |
| CN211677048U (en) | Automatic absorption and reutilization device for ammonia gas discharged by ammonia water tank at overpressure | |
| CN210683194U (en) | Volatile liquid filling system | |
| CN212236705U (en) | Acid mist absorber | |
| CN204916778U (en) | Hydrochloric acid liquid seal jar | |
| CN202265123U (en) | Breather valve of hydrochloric acid storage tank and hydrochloric acid with breather valve | |
| CN2187157Y (en) | Damping averager | |
| CN2349168Y (en) | Liquid sealing gas absorber | |
| CN201746324U (en) | Device for reclaiming sodium sulfhydrate | |
| CN220622849U (en) | External water seal device of pipeline | |
| CN201337877Y (en) | Absorbing and collecting device for exhaust generated in polystyrene production | |
| CN209865715U (en) | Pressure balance and positive pressure acid mist absorption device for hydrochloric acid storage tank | |
| CN219991562U (en) | Water sealed tank for pickling full-ecological pickled Chinese cabbage | |
| CN204656293U (en) | There is the recyclable ammonia absorption device of pressure balance function |
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 |