CN218688029U - Integrated equipment for treating high-temperature tail gas of hydrogen halide - Google Patents
Integrated equipment for treating high-temperature tail gas of hydrogen halide Download PDFInfo
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- CN218688029U CN218688029U CN202222598999.7U CN202222598999U CN218688029U CN 218688029 U CN218688029 U CN 218688029U CN 202222598999 U CN202222598999 U CN 202222598999U CN 218688029 U CN218688029 U CN 218688029U
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Abstract
The utility model discloses a handle integration equipment to hydrogen halide high temperature tail gas relates to chemical industry, environmental protection field. The equipment comprises a quench tower and a washing tower, wherein the quench tower comprises a tower wall cooling water inlet, a quench water inlet and a nozzle, the top end of the quench tower is provided with a tail gas inlet, and the bottom end of the quench tower is connected with an alkaline washing tower; the washing tower comprises a demister, a demister washing port, a spraying liquid inlet, a filler and a liquid collecting disc liquid outlet, a tail gas outlet is formed in the top end of the washing tower, and the bottom end of the washing tower and the quench tower share a tower kettle. The utility model provides high flue gas cooling efficiency has restrained the regeneration of dioxin, gets rid of the acid material in the tail gas effectively, adopts different materials to quench tower body and tower internals to the tower internal environment of difference simultaneously, has effectively prevented the corruption of equipment and internals. And the quenching and alkali washing integrated equipment occupies small area, and reduces equipment investment and operation cost.
Description
Technical Field
The utility model relates to a chemical industry, environmental protection field relate to a handle integration equipment to hydrogen halide high temperature tail gas.
Background
At present, VOCs gas and organic waste liquid containing halogen (F, cl, br and I) can be treated by a direct burning method, and the discharge reaching the standard is realized by a method of quenching and alkali washing. The direct incineration temperature of the waste gas and the waste liquid needs to reach about 1100 ℃, and the generated tail gas containing hydrogen halide only has high-temperature oxidation corrosion at high temperature. When high-temperature tail gas enters the quench tower for cooling, the medium at the inlet of the quench tower is cooling flue gas after incineration and water supplement of a quench system, and the high-temperature flue gas and low-temperature water can enable the inlet of the quench tower to form a dry-wet alternate interface, which is a harsh corrosion environment. The medium in the washing tower is flue gas (70-90 ℃), alkali liquor and the like after quenching, and the high-halogen alkaline environment needs to pay attention to the pitting corrosion resistance of the material under the condition of meeting the corrosion resistance of the material; therefore, the method has important significance for adopting different anticorrosive materials for equipment and internals aiming at different environments in the tower.
At present, the purification process of tail gas containing halogen needs more equipment and has higher engineering investment and operation cost, so when the high-temperature tail gas containing hydrogen halide is treated, specific measures and methods are needed.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model aims to: the utility model provides a handle integration equipment to hydrogen halide high temperature tail gas to solve hydrogen halide high temperature tail gas and produce the problem that causes strong corruption to equipment and internals in the cooling process, get rid of the hydrogen halide in the tail gas simultaneously, make tail gas discharge up to standard. In addition, the novel quenching and alkali washing integrated equipment has the advantages of good treatment effect, less equipment investment and small occupied area.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides a handle integration equipment to hydrogen halide high temperature tail gas which characterized in that: the equipment comprises a quench tower and a washing tower, wherein the bottom of the quench tower is connected with a tower kettle of the washing tower, and a first layer of filler, a first spraying layer, a demister B, a liquid collecting disc, a second layer of filler, a second spraying layer and a demister A are sequentially arranged above the tower kettle of the washing tower.
The utility model discloses among the technical scheme: the top of quench tower is equipped with the tail gas entry, and the upper portion of tail gas entry is equipped with quench water entry, and the lower part of tail gas entry is equipped with tower wall cooling water entry.
The utility model discloses among the technical scheme: and a nozzle A and a nozzle B are arranged in the upper inner cavity of the quenching tower at intervals.
The utility model discloses among the technical scheme: the nozzles A and B are arranged at intervals on the vertical center line of the quenching tower.
The utility model discloses among the technical scheme: a liquid outlet of the liquid collecting disc is arranged below the liquid collecting disc.
The utility model discloses among the technical scheme: the first spraying layer is provided with a spraying liquid inlet B, and the second spraying layer is provided with a spraying liquid inlet A.
The utility model discloses among the technical scheme: the top of the washing tower is provided with a tail gas outlet.
The utility model discloses among the technical scheme: the demister B is provided with a demister flushing port B.
In some more specific technical schemes, the integrated equipment for treating the high-temperature tail gas of the hydrogen halide comprises a quenching tower and a washing tower. The quenching tower comprises a quenching water inlet, a tower wall cooling water inlet and a nozzle, wherein the top end of the quenching tower is provided with a tail gas inlet, and the bottom end of the quenching tower is connected with an alkaline washing tower; the tower wall cooling water inlet is positioned below the quenching water inlet and is externally connected with a cooling water pipeline; the output end of the quenching water inlet is provided with a horizontal atomizing nozzle, and the input end of the quenching water inlet is externally connected with a production water pipeline through a pipeline; the nozzles are vertical nozzles, are positioned at the upper part of the quenching tower and are arranged on the vertical central line of the quenching tower at intervals. The washing tower comprises a demister, a demister washing port, a spraying liquid inlet, a filler and a liquid collecting tray liquid outlet. The top end of the washing tower is provided with a tail gas outlet, the bottom end of the washing tower and the quenching tower share a tower kettle, and the liquid level of the tower kettle is maintained by supplementing water from the washing tower. The defroster washes a mouthful input and connects the process water pipeline, and the output sets up the nozzle, regularly washes the defroster.
Preferably, the quenching tower and the washing tower share a tower kettle, and the quenching liquid is also alkali liquor. The liquid level of the tower kettle is maintained by replenishing water from the washing tower, and the pH value of the tower kettle is maintained by replenishing alkali from the washing tower.
Preferably, the quenching tower is of a Venturi structure, and the dry-wet alternate interface at the top of the tower is of an overflow ring structure.
Preferably, the quenching tower body is divided into an upper part and a lower part, the middle parts are connected by a flange, and the upper structure of the quenching tower is made of Hastelloy materials. The lower structure of the quenching tower adopts glass fiber reinforced plastic materials.
Preferably, the washing tower is a packed tower, the washing tower is made of glass fiber reinforced plastic, and the packing is plastic structured packing.
Preferably, the washing tower adopts two-stage washing, and the first stage adopts NaOH solution for washing. The solution enters from the middle part of the washing tower and downwards absorbs most of hydrogen halide in the tail gas through the packing; the second stage is washed with industrial water to wash the hydrogen halide not washed away by the first stage.
Preferably, a demister is arranged at the outlet of the washing tower to prevent liquid drops from being entrained in the tail gas. Meanwhile, a nozzle is arranged in front of the demister and used for periodically washing the demister to keep the demister clean.
The utility model has the advantages that:
1) The incinerated high-temperature tail gas containing the hydrogen halide enters a quench tower, the temperature of the flue gas is reduced to be lower than the adiabatic saturation temperature (70-90 ℃) of the flue gas by the quench tower, and the cooling time of the flue gas is less than 0.5 second, so that the requirements of related standards are met.
2) The quench tower adopts a Venturi structure, and the quench liquid is alkali liquor. When the quenching circulating liquid is atomized and sprayed into the flue gas, part of the quenching circulating liquid is evaporated and vaporized, fully contacts with the flue gas, cools the flue gas and absorbs the hydrogen halide.
3) The top of the quenching tower is designed into an overflow ring structure, and the overflow ring can form a layer of water curtain on the wall of the tower to protect the wall of the tower from high temperature damage.
4) The nozzle at the upper section of the quenching tower is in a high-temperature, dry-wet alternative environment, the waste gas contains hydrogen halide gas, the corrosion to the nozzle and the upper structure is strong, and the upper structure is made of Hastelloy materials and has good corrosion resistance and thermal stability. The temperature of the waste gas at the lower section of the quench tower is lower (about 70-90 ℃), and the lower part structure is made of glass fiber reinforced plastic materials. Different anticorrosive materials are selected according to different internal environments of the tower so as to prevent the corrosion of the quenching tower and the internal parts of the tower.
5) The washing tower adopts two-stage washing, and the middle part is separated by a liquid collecting disc. After quenching, tail gas enters a washing tower which is a packed tower, and the first stage adopts NaOH solution for washing. The solution enters from the middle part of the washing and downwards passes through the packing to absorb most of the hydrogen halide in the flue gas; the second stage is washed with industrial water to wash the hydrogen halide not washed away by the first stage. The washing tower and the quenching tower share a tower kettle, and the water tank liquid level is maintained through water supplement from the washing tower.
6) The demister is arranged at the outlet of the washing tower to prevent liquid drops from being carried in the tail gas. The nozzle is arranged in front of the demister, the demister is washed regularly, and the demister is kept clean.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. a quench tower; 2. a washing tower; 3. a quench water inlet; 4. a tower wall cooling water inlet; 5. a nozzle A; 6. a nozzle B; 7. a tail gas inlet; 8. a tail gas outlet; 9. a demister A; 10. a spray liquid inlet A; 11. a second layer of filler; 12. a drip pan liquid outlet; 13. a demister B; 14. a spray liquid inlet B; 15. a first layer of filler; 16. a tower kettle; 17. a demister flushing port A; 18. demister washing port B.
Detailed Description
The present invention will be further explained with reference to the following embodiments, but the scope of the present invention is not limited thereto:
as shown in the figure 1, the integrated equipment for treating the high-temperature tail gas of the hydrogen halide comprises a quenching tower 1 and a washing tower 2, wherein the bottom of the quenching tower 1 is connected with a tower kettle 16 of the washing tower 2, and a first layer of filler 15, a first spraying layer, a demister B13, a liquid collecting disc, a second layer of filler 11, a second spraying layer and a demister A9 are sequentially arranged above the tower kettle 16 of the washing tower 2. The top of quench tower 1 is equipped with tail gas entry 7, and the upper portion of tail gas entry 7 is equipped with quench water entry 3, and the lower part of tail gas entry 7 is equipped with tower wall cooling water entry 4. A nozzle A5 and a nozzle B6 are arranged in the upper inner cavity of the quenching tower 1 at intervals. The nozzles A5 and B6 are arranged at intervals on the vertical center line of the quenching tower 1. A drip pan liquid outlet 12 is provided below the drip pan. The first spraying layer is provided with a spraying liquid inlet B14, and the second spraying layer is provided with a spraying liquid inlet A10. The top of the washing tower 2 is provided with a tail gas outlet 8. The demister B13 is provided with a demister flushing port B18.
As shown in figure 1, the invention relates to a quenching and alkali washing integrated equipment for treating high-temperature tail gas containing hydrogen halide, wherein incinerated high-temperature flue gas enters a quenching tower 1 from a tail gas inlet 7, the flue gas flows through the quenching tower from top to bottom, a quenching water inlet 3 is provided with a horizontal atomizing nozzle, when the quenching water is atomized and sprayed into the flue gas, part of the quenching water is evaporated and vaporized, and most of the excessive quenching water falls into a tower kettle and is pumped back to the top of the tower through a circulating pump. The quenching tower 1 reduces the temperature of the flue gas to 80 ℃ of the adiabatic saturation temperature of the flue gas, and the time for cooling the flue gas to the adiabatic saturation temperature is less than 0.5 second. The vertical nozzles 5 and 6 are arranged on the vertical central line of the quenching tower 1 at intervals, the input ends of the vertical nozzles are respectively externally connected with a tower kettle, and the circulating liquid is sprayed into the tower to carry out quenching and cooling on high-temperature flue gas through a circulating pump outlet pipeline, and meanwhile, part of acid gas in the flue gas is removed. The tower wall cooling water inlet 4 is positioned below the quenching water inlet 3 and is externally connected with a cooling water pipeline, the tower top is designed into an overflow ring structure, and the overflow ring can form a layer of water curtain on the tower wall to protect the tower wall from high-temperature damage. The cooled flue gas enters a washing tower 2, passes through the washing tower from bottom to top, the quenching liquid flows into a tower kettle 16 of the washing tower, the washing tower 2 is a packed tower and adopts two-stage washing, and the first stage adopts NaOH solution for washing. NaOH solution enters from a spray liquid inlet B14 and downwards passes through the first layer of filler 15 to absorb most of hydrogen halide in the flue gas; the second stage is washed by industrial water, the industrial water enters from a spray liquid inlet A10 and washes the hydrogen halide which is not washed away in the first stage downwards through a second layer of packing 11. The washing tower 2 and the quenching tower 1 share a tower bottom 16, and the tower bottom solution is used as the circulating spray liquid of the quenching tower 1 and the washing tower 2. And a demister is arranged in the washing tower to prevent liquid drops from being carried in the tail gas. The nozzle is arranged in front of the demister, and the input end of the nozzle is connected with production water to regularly wash the demister so as to keep the demister clean. The tail gas is discharged from a tail gas outlet 8 after being washed by two stages.
The invention can effectively remove acidic substances in the tail gas, so that the temperature of the flue gas is rapidly cooled to about 80 ℃ from the high temperature after incineration, and different anticorrosive materials are adopted for the quenching tower body and the internal parts of the tower, thereby solving the problem of corrosion of equipment and the internal parts of the tower. Meanwhile, the quenching and the washing share one tower kettle, and the alkali washing and the water washing share one tower, so that the occupied area is small, and the equipment investment is reduced.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (8)
1. The utility model provides a handle integration equipment to hydrogen halide high temperature tail gas which characterized in that: the equipment comprises a quenching tower (1) and a washing tower (2), wherein the bottom of the quenching tower (1) is connected with a tower kettle (16) of the washing tower (2), and a first layer of filler (15), a first spraying layer, a demister B (13), a liquid collecting disc, a second layer of filler (11), a second spraying layer and a demister A (9) are sequentially arranged above the tower kettle (16) of the washing tower (2).
2. The integrated equipment for hydrogen halide high-temperature tail gas treatment according to claim 1, characterized in that: the top of quench tower (1) is equipped with tail gas entry (7), and the upper portion of tail gas entry (7) is equipped with quench water entry (3), and the lower part of tail gas entry (7) is equipped with tower wall cooling water entry (4).
3. The integrated equipment for hydrogen halide high-temperature tail gas treatment according to claim 1, characterized in that: the upper inner cavity of the quenching tower (1) is provided with a nozzle A (5) and a nozzle B (6) at intervals.
4. The integrated equipment for hydrogen halide high-temperature tail gas treatment according to claim 3, characterized in that: the nozzles A (5) and B (6) are arranged at intervals on the vertical center line of the quenching tower (1).
5. The integrated equipment for hydrogen halide high-temperature tail gas treatment according to claim 1, characterized in that: a drip pan liquid outlet (12) is arranged below the drip pan.
6. The integrated equipment for hydrogen halide high-temperature tail gas treatment according to claim 1, characterized in that: the first spraying layer is provided with a spraying liquid inlet B (14), and the second spraying layer is provided with a spraying liquid inlet A (10).
7. The integrated equipment for hydrogen halide high-temperature tail gas treatment according to claim 1, characterized in that: the top of the washing tower (2) is provided with a tail gas outlet (8).
8. The integrated equipment for hydrogen halide high-temperature tail gas treatment according to claim 1, characterized in that: the demister B (13) is provided with a demister flushing port B (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222598999.7U CN218688029U (en) | 2022-09-29 | 2022-09-29 | Integrated equipment for treating high-temperature tail gas of hydrogen halide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222598999.7U CN218688029U (en) | 2022-09-29 | 2022-09-29 | Integrated equipment for treating high-temperature tail gas of hydrogen halide |
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| Publication Number | Publication Date |
|---|---|
| CN218688029U true CN218688029U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222598999.7U Active CN218688029U (en) | 2022-09-29 | 2022-09-29 | Integrated equipment for treating high-temperature tail gas of hydrogen halide |
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| Country | Link |
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| CN (1) | CN218688029U (en) |
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