CN216498541U - Device for removing low-content hydrogen chloride in tail gas in coal chemical industry - Google Patents
Device for removing low-content hydrogen chloride in tail gas in coal chemical industry Download PDFInfo
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- CN216498541U CN216498541U CN202123186974.8U CN202123186974U CN216498541U CN 216498541 U CN216498541 U CN 216498541U CN 202123186974 U CN202123186974 U CN 202123186974U CN 216498541 U CN216498541 U CN 216498541U
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Abstract
The utility model discloses a device for removing low-content hydrogen chloride in tail gas in the coal chemical industry, which comprises a base, a spray tower and a condenser, wherein the spray tower is fixed on the upper surface of the base through bolts, a sodium hydroxide solution tank is arranged on a bottom plate in the spray tower, a packing layer is arranged above the sodium hydroxide solution tank in the spray tower, and a spray head is fixed in the spray tower above the packing layer through bolts. According to the device for removing the low-content hydrogen chloride in the tail gas in the coal chemical industry, the HCL gas discharged in the process of generating the waste gas in the coal chemical industry is absorbed by utilizing a neutralization reaction, the process realizes reverse flow through the spray tower, the spray liquid in the tower is used as a disperse phase and flows from top to bottom under the action of gravity, the hydrogen chloride gas flows through the whole tower under the action of pressure difference, a larger average driving force can be obtained in a reverse flow mode, the neutralization efficiency in the flow process can be effectively improved, and therefore the consumption of the absorbent is reduced.
Description
Technical Field
The utility model relates to the technical field of tail gas treatment, in particular to a device for removing low-content hydrogen chloride in tail gas in the coal chemical industry.
Background
Most hydrogen chloride tail gas treatment equipment adopts a foam tower absorption process, so that the defects of low hydrogen chloride absorption efficiency, high consumption of subsequent neutralization treatment and the like exist, the waste of hydrogen chloride and hydrochloric acid is caused, and the environmental pollution is caused. And after the hydrogen chloride gas and the hydrochloric acid fog drops are inhaled, the hydrogen chloride gas and the hydrochloric acid fog drops can be dissociated under the action of water on the surface of respiratory mucosa, so that the local mucosa has strong stimulation and corrosion effects.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for removing low-content hydrogen chloride in tail gas in the coal chemical industry, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model adopts the following technical scheme: a device for removing low-content hydrogen chloride in tail gas in the coal chemical industry comprises a base, a spray tower and a condenser, wherein the spray tower is fixed on the upper surface of the base through bolts, a sodium hydroxide solution tank is arranged on an inner bottom plate of the spray tower, a packing layer is arranged in the spray tower and above the sodium hydroxide solution tank, a spray head is fixed in the spray tower and above the packing layer through bolts, a nozzle is arranged below the spray head, an exhaust pipe is connected to the center of the top of the spray tower in a conduction mode, a tail gas inlet pipe is connected to the outer wall of the spray tower in a conduction mode, and the tail gas inlet pipe is located between the sodium hydroxide solution tank and the packing layer;
be provided with heat exchange coil in the condenser, heat exchange coil one end and blast pipe turn-on connection, heat exchange coil's the other end turn-on connection has the discharge pipe that extends to the condenser outside.
As a further description of the above technical solution:
the top of one side wall of the condenser is in conduction connection with a cooling medium inlet pipe, and the bottom of the other side wall of the condenser is in conduction connection with a cooling medium outlet pipe.
As a further description of the above technical solution:
the two packing layers and the two spray headers are arranged respectively, the two packing layers are arranged above the sodium hydroxide solution tank, and the two spray headers are arranged above the two packing layers respectively.
As a further description of the above technical solution:
the spray tower is characterized in that a liquid injection pipe is connected to the outer wall of the spray tower in a conduction mode, and the bottom end of the liquid injection pipe extends into the sodium hydroxide solution tank.
As a further description of the above technical solution:
the spraying tower is characterized in that an infusion pump is fixed on one side of the base, which is positioned on the spraying tower, through a bolt, a liquid inlet pipe of the infusion pump is in conduction connection with the sodium hydroxide solution tank through a connecting pipe, and a liquid outlet pipe of the infusion pump is in conduction connection with the spraying head through a guide pipe.
The utility model provides a device for removing low-content hydrogen chloride in tail gas in coal chemical industry. The method has the following beneficial effects:
the device for removing low-content hydrogen chloride in tail gas in the coal chemical industry absorbs HCL gas discharged in the process of generating waste gas in the coal chemical industry by utilizing neutralization reaction, the process realizes reverse flow through the spray tower, the spray liquid in the tower flows from top to bottom by the action of gravity as a dispersed phase, the hydrogen chloride gas flows through the whole tower by the action of pressure difference, a larger average driving force can be obtained in a reverse flow mode, the neutralization efficiency in the flow process can be effectively improved, the consumption of an absorbent is reduced, the concentration of gas discharged from the tower is reduced, secondly, a condenser is arranged to cool and reflux the absorption liquid which is generated by heat evaporation in the neutralization reaction, thereby realizing the recycling of the alkali liquor, and the device for removing the low-content hydrogen chloride in the tail gas in the coal chemical industry has the advantages of simple operation, low manufacturing cost, low energy consumption, less industrial water, high hydrogen chloride recovery efficiency, environmental friendliness and contribution to industrial continuous production.
Drawings
FIG. 1 is a front view of a device for removing low-content hydrogen chloride in tail gas in the coal chemical industry according to the present invention;
FIG. 2 is a cross-sectional view of a spray tower of the present invention;
fig. 3 is a sectional view of a condenser in the present invention.
Illustration of the drawings:
1. a base; 2. a spray tower; 3. a liquid injection pipe; 4. an infusion pump; 5. introducing tail gas into a pipe; 6. a conduit; 7. an exhaust pipe; 8. a condenser; 9. a cooling medium inlet pipe; 10. a cooling medium outlet pipe; 11. a heat exchange coil; 12. a discharge pipe; 13. a filler layer; 14. a shower head; 15. a nozzle; 16. a sodium hydroxide solution tank; 17. and (4) connecting the pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a device for removing low-content hydrogen chloride in tail gas in coal chemical industry comprises a base 1, a spray tower 2 and a condenser 8, wherein the spray tower 2 is fixed on the upper surface of the base 1 through bolts, a sodium hydroxide solution tank 16 is arranged on an inner bottom plate of the spray tower 2, a packing layer 13 is arranged inside the spray tower 2 and above the sodium hydroxide solution tank 16, a spray head 14 is fixed inside the spray tower 2 and above the packing layer 13 through bolts, a nozzle 15 is arranged below the spray head 14, an exhaust pipe 7 is connected to the center of the top of the spray tower 2 in a conduction manner, a tail gas inlet pipe 5 is connected to the outer wall of the spray tower 2 in a conduction manner, and the tail gas inlet pipe 5 is positioned between the sodium hydroxide solution tank 16 and the packing layer 13;
a heat exchange coil 11 is arranged in the condenser 8, one end of the heat exchange coil 11 is in conduction connection with the exhaust pipe 7, and the other end of the heat exchange coil 11 is in conduction connection with a discharge pipe 12 extending to the outer side of the condenser 8.
The top of one side wall of the condenser 8 is in conduction connection with a cooling medium inlet pipe 9, and the bottom of the other side wall of the condenser 8 is in conduction connection with a cooling medium outlet pipe 10.
The packing layers 13 and the spray headers 14 are arranged in two numbers, the two packing layers 13 are arranged above the sodium hydroxide solution tank 16, and the two spray headers 14 are respectively arranged above the two packing layers 13.
The outer wall of the spray tower 2 is conductively connected with a liquid injection pipe 3, and the bottom end of the liquid injection pipe 3 extends into the sodium hydroxide solution tank 16.
The infusion pump 4 is fixed on the base 1 at one side of the spray tower 2 through a bolt, a liquid inlet pipe of the infusion pump 4 is in conduction connection with the sodium hydroxide solution tank 16 through a connecting pipe 17, and a liquid outlet pipe of the infusion pump 4 is in conduction connection with the spray header 14 through a guide pipe 6.
The working principle is as follows: when the device for removing low-content hydrogen chloride in tail gas in the coal chemical industry is used, a power supply is externally connected, the infusion pump 4 is turned on, the infusion pump 4 pumps absorption liquid in the sodium hydroxide solution tank 6 into the spray header 14 to be sprayed out, then the tail gas is conveyed into the spray tower 2 through the tail gas inlet pipe 5, the tail gas is contacted with the absorption liquid sprayed out from the spray header 14 to carry out acid-base neutralization reaction, hydrogen chloride in the tail gas is absorbed, in the reaction process, heat can be generated to evaporate the absorption liquid, the evaporated absorption liquid and the purified tail gas are discharged into the heat exchange coil 11 in the condenser 8 through the exhaust pipe 7, a cooling medium is circularly injected into the condenser 8 through the cooling medium inlet pipe 9, heat exchange is carried out through the cooling medium and the heat exchange coil 11, the evaporated absorption liquid is cooled into liquid, and then the evaporated absorption liquid can be recycled.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (5)
1. A device for removing low-content hydrogen chloride in tail gas in the coal chemical industry, which comprises a base (1), a spray tower (2) and a condenser (8), it is characterized in that a spray tower (2) is fixed on the upper surface of the base (1) by bolts, a sodium hydroxide solution tank (16) is arranged on the inner bottom plate of the spray tower (2), a packing layer (13) is arranged in the spray tower (2) and above the sodium hydroxide solution tank (16), a spray header (14) is fixed in the spray tower (2) by bolts above the packing layer (13), a nozzle (15) is arranged below the spray header (14), the center of the top of the spray tower (2) is connected with an exhaust pipe (7) in a conduction way, the outer wall of the spray tower (2) is connected with a tail gas inlet pipe (5) in a conduction way, and the tail gas inlet pipe (5) is positioned between the sodium hydroxide solution tank (16) and the packing layer (13);
be provided with heat exchange coil (11) in condenser (8), heat exchange coil (11) one end and blast pipe (7) turn-on connection, the other end turn-on connection of heat exchange coil (11) has discharge pipe (12) that extend to the condenser (8) outside.
2. The device for removing low-content hydrogen chloride in tail gas in the coal chemical industry according to claim 1, wherein a cooling medium inlet pipe (9) is connected to the top of one side wall of the condenser (8) in a conduction mode, and a cooling medium outlet pipe (10) is connected to the bottom of the other side wall of the condenser (8) in a conduction mode.
3. The device for removing low-content hydrogen chloride in tail gas in the coal chemical industry according to claim 1, wherein two packing layers (13) and two spray headers (14) are arranged, the two packing layers (13) are arranged above the sodium hydroxide solution tank (16), and the two spray headers (14) are respectively arranged above the two packing layers (13).
4. The device for removing low-content hydrogen chloride in tail gas in the coal chemical industry according to claim 1, wherein a liquid injection pipe (3) is connected to the outer wall of the spray tower (2) in a conduction manner, and the bottom end of the liquid injection pipe (3) extends into the sodium hydroxide solution tank (16).
5. The device for removing low-content hydrogen chloride in tail gas in the coal chemical industry according to claim 1, wherein a liquid infusion pump (4) is fixed on one side of the base (1) on the spray tower (2) through a bolt, a liquid inlet pipe of the liquid infusion pump (4) is in conduction connection with a sodium hydroxide solution tank (16) through a connecting pipe (17), and a liquid outlet pipe of the liquid infusion pump (4) is in conduction connection with a spray header (14) through a conduit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123186974.8U CN216498541U (en) | 2021-12-17 | 2021-12-17 | Device for removing low-content hydrogen chloride in tail gas in coal chemical industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123186974.8U CN216498541U (en) | 2021-12-17 | 2021-12-17 | Device for removing low-content hydrogen chloride in tail gas in coal chemical industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216498541U true CN216498541U (en) | 2022-05-13 |
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ID=81500016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123186974.8U Active CN216498541U (en) | 2021-12-17 | 2021-12-17 | Device for removing low-content hydrogen chloride in tail gas in coal chemical industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216498541U (en) |
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2021
- 2021-12-17 CN CN202123186974.8U patent/CN216498541U/en active Active
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