CN220003501U - Device for continuously treating acidic tail gas - Google Patents
Device for continuously treating acidic tail gas Download PDFInfo
- Publication number
- CN220003501U CN220003501U CN202320925888.4U CN202320925888U CN220003501U CN 220003501 U CN220003501 U CN 220003501U CN 202320925888 U CN202320925888 U CN 202320925888U CN 220003501 U CN220003501 U CN 220003501U
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- China
- Prior art keywords
- tail gas
- pump
- alkali liquor
- meter
- liquid level
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- 230000002378 acidificating effect Effects 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- 239000003513 alkali Substances 0.000 claims abstract description 42
- 239000002699 waste material Substances 0.000 claims abstract description 24
- 239000002253 acid Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 34
- 239000006096 absorbing agent Substances 0.000 description 4
- 239000011552 falling film Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to a device for continuously treating acidic tail gas, which is structurally characterized in that an alkali liquor storage tank is connected to the upper part of a reaction container through an alkali liquor pump and an alkali liquor pump valve which are interlocked with two liquid level sensors, the reaction container is provided with the two liquid level sensors and an electronic PH meter, a tail gas contact cover is arranged in the reaction container, a tail gas inlet pipe is connected with the top of the tail gas contact cover, a vacuum pump and a pressure meter are respectively arranged at the top of the reaction container, and the start and stop of the vacuum pump are interlocked with the pressure meter; the inlet of the waste liquid pump is connected with the bottom of the reaction vessel, and the outlet of the waste liquid pump is connected to the top of the reaction vessel and the waste liquid tank through a solenoid valve interlocked with a circulation control valve and an electronic PH meter respectively. The device judges that the alkali liquor is reacted completely through the PH smaller than 7, the second outlet end is opened with the electromagnetic valve linked with the electronic PH meter, the liquid level in the reaction container is reduced, and then the alkali liquor pump controlled by the two liquid level sensors is used for automatically supplementing fresh alkali liquor to absorb acid tail gas, so that continuous treatment of the acid tail gas is realized.
Description
Technical Field
The utility model relates to a device for continuously treating acidic tail gas in chemical enterprises.
Background
In chemical industry factories, many production processes involve the absorption treatment of acidic tail gas, and common treatment equipment is high tower alkali liquor spraying. The high tower spraying equipment has high manufacturing cost, high maintenance cost and troublesome overhaul, the energy consumption of the alkali liquor to be conveyed to the top of the high tower is high, and the absorption efficiency of the acid tail gas cannot reach 100 percent. Patent 201822035626.2 discloses an acidic tail gas treatment device, which comprises a reaction kettle, a condenser, a falling film absorber, an alkaline washing tower, a vacuum buffer tank and a vacuum pump; the top of the reaction kettle is provided with an exhaust port, the exhaust port is communicated with an air inlet of the condenser through a pipeline, an air outlet of the condenser is communicated with a second air inlet at the bottom of the falling film absorber, the top of the falling film absorber is provided with a pure water inlet and a second air outlet, and the bottom of the falling film absorber is also provided with a solution outlet; the second air outlet is communicated with a third air inlet at the bottom of the alkaline washing tower, the third air outlet at the top of the alkaline washing tower is communicated with a vacuum buffer tank, and the vacuum buffer tank discharges tail gas through a vacuum pump. The patent is specially aimed at recycling acid tail gas, and the acid tail gas which can not be recycled, only can be neutralized and absorbed can not be taken into consideration, so that the treatment absorption utilization rate is low, the consumption of membrane treatment materials is fast, and the consumable cost is high.
Disclosure of Invention
The utility model aims to solve the problems of high manufacturing cost, high maintenance cost, troublesome maintenance, capability of disposing various acid tail gases and the like of high-tower spraying equipment in the prior art, and provides a device for continuously disposing the acid tail gases.
The utility model adopts the technical scheme that:
the device for continuously treating the acidic tail gas comprises an alkali liquor storage tank, an alkali liquor pump, a reaction container, a waste liquor pump, a vacuum pump, a waste liquor tank, an alkali liquor pump valve, a tail gas contact cover, a tail gas inlet pipe, two liquid level sensors, an electronic PH meter, a circulation control valve, an electromagnetic valve and a pressure gauge, wherein the electromagnetic valve is interlocked with the electronic PH meter; the method is characterized in that: the alkali liquor storage tank is connected to the upper part of the reaction container through an alkali liquor pump and an alkali liquor pump valve which are interlocked with the two liquid level sensors, the two liquid level sensors and the electronic PH meter are arranged on the reaction container, a tail gas contact cover is arranged in the reaction container, a tail gas inlet pipe is connected with the top of the tail gas contact cover, a vacuum pump and a pressure meter are respectively arranged at the top of the reaction container, and the start and stop of the vacuum pump are interlocked with the pressure meter; the inlet of the waste liquid pump is connected with the bottom of the reaction vessel, and the outlet of the waste liquid pump is connected to the top of the reaction vessel and the waste liquid tank through a solenoid valve interlocked with a circulation control valve and an electronic PH meter respectively.
The vacuum pump is started and stopped when the interlocking pressure of the vacuum pump and the pressure gauge reaches-0.15 mpa, and the vacuum pump is started when the negative pressure is reduced to-0.05 mpa.
The waste liquid pump is normally open, the outlet end is provided with a tee joint, and the first outlet end circulation control valve is connected to the top of the reaction container to realize the internal circulation of alkali liquor, so that the alkali liquor in the reaction container is ensured to be uniform; and the second outlet end is provided with an electromagnetic valve interlocked with an electronic PH meter (the solution PH in the reaction container is smaller than 7, the electromagnetic valve is opened, and the electromagnetic valve is closed, and the PH is larger than 10), and the outlet of the electromagnetic valve interlocked with the electronic PH meter is connected to the waste liquid tank.
The liquid level in the reaction vessel is automatically controlled by an alkaline pump interlocked with two liquid level sensors, the upper limit liquid level sensor is arranged at a position 20cm higher than the bottom plane of the tail gas contact cover, and the lower limit liquid level sensor is arranged at a position 5cm higher than the bottom plane of the tail gas contact cover. The liquid level in the reaction vessel is controlled by an alkaline pump which is interlocked with a liquid level sensor, the liquid level is set to be 5cm high by submerged of the tail gas contact cover, the alkaline pump is automatically started below the liquid level, and the liquid level reaches 20cm higher than the bottom plane of the tail gas contact cover, and the alkaline pump is stopped.
The material of the reaction vessel is acid and alkali resistant material which is easy to seal.
The tail gas contact cover is made of acid and alkali resistant materials.
All the conveying pumps and the pipelines are made of alkali-resistant materials.
The device judges that the alkali liquor is reacted completely through the PH smaller than 7, the second outlet end is opened with the electromagnetic valve linked with the electronic PH meter, the liquid level in the reaction container is reduced, and then the alkali liquor pump controlled by the two liquid level sensors is used for automatically supplementing fresh alkali liquor to absorb acid tail gas, so that continuous treatment of the acid tail gas is realized.
Drawings
Fig. 1 is a schematic front view of the present utility model.
In the figure: 1. the device comprises an alkaline liquid tank, 2, an alkaline liquid pump which is interlocked with a liquid level sensor, 2-1, an alkaline liquid pump valve, 3, a reaction container, 3-1, a tail gas contact cover, 3-2, a tail gas inlet pipe, 3-3, an upper limit liquid level sensor, 3-4, a lower limit liquid level sensor, 3-5, an electronic PH meter, 4, a waste liquid pump, 4-1, a circulation control valve, 4-2, an electromagnetic valve which is interlocked with the electronic PH meter, 5, a vacuum pump, 5-1, a pressure gauge, 6 and a waste liquid tank.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
As shown in figure 1, the device for continuously treating the acidic tail gas comprises an alkali liquor storage tank 1, an alkali liquor pump 2 which is interlocked with liquid level sensors, a reaction container 3, a waste liquor pump 4, a vacuum pump 5, a waste liquor tank 6, an alkali liquor pump valve 2-1, a tail gas contact cover 3-1, a tail gas inlet pipe 3-2, two liquid level sensors (3-3, 3-4), an electronic PH meter 3-5, a circulation control valve 4-1, an electromagnetic valve 4-2 which is interlocked with the electronic PH meter and a pressure gauge 5-1; the method is characterized in that: the alkali liquor storage tank 1 is connected to the upper part of the reaction vessel 3 through an alkali liquor pump 2 and an alkali liquor pump valve 2-1 which are interlocked with two liquid level sensors (3-3, 3-4), the reaction vessel 3 is provided with two liquid level sensors (3-3, 3-4) and an electronic PH meter 3-5, the reaction vessel 3 is internally provided with a tail gas contact cover 3-1, a tail gas inlet pipe 3-2 is connected with the top of the tail gas contact cover 3-1, a vacuum pump 5 and a pressure gauge 5-1 are respectively arranged at the top of the reaction vessel 3, and the start and stop of the vacuum pump 5 are interlocked with the pressure gauge 5-1; the inlet of the waste liquid pump 4 is connected with the bottom of the reaction vessel 3, and the outlet of the waste liquid pump 4 is connected with the top of the reaction vessel 3 and the waste liquid tank 6 through a linkage electromagnetic valve 4-2 with a circulation control valve 4-1 and an electronic PH meter respectively.
The vacuum pump is started and stopped when the interlocking pressure of the vacuum pump and the pressure gauge reaches-0.15 mpa, and the vacuum pump is started when the negative pressure is reduced to-0.05 mpa.
The waste liquid pump is normally open, the outlet end is provided with a tee joint, the first outlet end circulation control valve 4-1 is connected to the top of the reaction container 3 to realize the internal circulation of alkali liquid, and the alkali liquid in the reaction container 3 is ensured to be uniform; the second outlet end is provided with an electromagnetic valve 4-2 interlocked with an electronic PH meter (the electromagnetic valve is opened when the PH of the solution in the reaction container 3 is smaller than 7 and is closed when the PH is larger than 10), and the outlet of the electromagnetic valve 4-2 interlocked with the electronic PH meter is connected to a waste liquid tank 6.
The liquid level in the reaction vessel 3 is automatically controlled by an alkaline pump 2 which is interlocked with two liquid level sensors (3-3, 3-4), the upper limit liquid level sensor 3-3 is arranged at a position 20cm higher than the bottom plane of the tail gas contact cover 3-1, and the lower limit liquid level sensor 3-4 is arranged at a position 5cm higher than the bottom plane of the tail gas contact cover 3-1. The material of the reaction vessel 3 is acid and alkali resistant material which is easy to seal. The tail gas contact cover is made of acid and alkali resistant materials. All the conveying pumps and the pipelines are made of alkali-resistant materials.
Claims (6)
1. The device for continuously treating the acidic tail gas comprises an alkali liquor storage tank, an alkali liquor pump, a reaction container, a waste liquor pump, a vacuum pump, a waste liquor tank, an alkali liquor pump valve, a tail gas contact cover, a tail gas inlet pipe, two liquid level sensors, an electronic PH meter, a circulation control valve, an electromagnetic valve and a pressure gauge, wherein the electromagnetic valve is interlocked with the electronic PH meter; the method is characterized in that: the alkali liquor storage tank is connected to the upper part of the reaction container through an alkali liquor pump and an alkali liquor pump valve which are interlocked with the two liquid level sensors, the two liquid level sensors and the electronic PH meter are arranged on the reaction container, a tail gas contact cover is arranged in the reaction container, a tail gas inlet pipe is connected with the top of the tail gas contact cover, a vacuum pump and a pressure meter are respectively arranged at the top of the reaction container, and the start and stop of the vacuum pump are interlocked with the pressure meter; the inlet of the waste liquid pump is connected with the bottom of the reaction vessel, and the outlet of the waste liquid pump is connected to the top of the reaction vessel and the waste liquid tank through a solenoid valve interlocked with a circulation control valve and an electronic PH meter respectively.
2. An apparatus for continuously treating an acidic tail gas as claimed in claim 1 wherein: the vacuum pump is started and stopped when the interlocking pressure of the vacuum pump and the pressure gauge reaches-0.15 mpa, and the vacuum pump is started when the negative pressure is reduced to-0.05 mpa.
3. An apparatus for continuously treating an acidic tail gas as claimed in claim 1 wherein: the upper limit liquid level sensor is arranged at a position 20cm higher than the bottom plane of the tail gas contact cover, and the lower limit liquid level sensor is arranged at a position 5cm higher than the bottom plane of the tail gas contact cover.
4. An apparatus for continuously treating an acidic tail gas as claimed in claim 1 wherein: the material of the reaction vessel is acid and alkali resistant material which is easy to seal.
5. An apparatus for continuously treating an acidic tail gas as claimed in claim 1 wherein: the tail gas contact cover is made of acid and alkali resistant materials.
6. An apparatus for continuously treating an acidic tail gas as claimed in claim 1 wherein: all the conveying pumps and the pipelines are made of alkali-resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320925888.4U CN220003501U (en) | 2023-04-23 | 2023-04-23 | Device for continuously treating acidic tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320925888.4U CN220003501U (en) | 2023-04-23 | 2023-04-23 | Device for continuously treating acidic tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220003501U true CN220003501U (en) | 2023-11-14 |
Family
ID=88673741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320925888.4U Active CN220003501U (en) | 2023-04-23 | 2023-04-23 | Device for continuously treating acidic tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220003501U (en) |
-
2023
- 2023-04-23 CN CN202320925888.4U patent/CN220003501U/en active Active
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