CN212215091U - Tail gas treatment device for sulfanilic acid - Google Patents
Tail gas treatment device for sulfanilic acid Download PDFInfo
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- CN212215091U CN212215091U CN201922491237.5U CN201922491237U CN212215091U CN 212215091 U CN212215091 U CN 212215091U CN 201922491237 U CN201922491237 U CN 201922491237U CN 212215091 U CN212215091 U CN 212215091U
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Abstract
The utility model belongs to a sulfanilic acid field specifically discloses a tail gas processing apparatus of sulfanilic acid, and the tail gas of production sulfanilic acid in-process is advanced into heat exchanger, and heat exchanger can improve energy utilization rate with the heat recovery in the tail gas of production sulfanilic acid in-process production. Then the tail gas enters the alkaline washing tower through the first gas inlet, the tail gas enters the first tower body through the first gas inlet, the alkali liquor enters the spraying layer through the first water outlet, is sprayed out of the atomizing spray head and is combined with the gas, and the acid in the tail gas is neutralized and is used for removing sulfur-containing substances in the tail gas; the tail gas enters a water washing tower for further washing the flue gas; and then the tail gas enters the purification tower, and the purification tower purifies the tail gas again, so that the tail gas reaches the emission standard, and the adverse effect on the environment and the health of workers caused by direct emission is avoided.
Description
Technical Field
The utility model belongs to sulfanilic acid field, in particular to sulfanilic acid's tail gas processing apparatus.
Background
The sulfanilic acid is white to grey white powder, turns into white crystal after absorbing water in the air, has one molecule of crystal water, loses the crystal water when the temperature reaches 100 ℃, starts to decompose and carbonize at 300 ℃, is slightly soluble in cold water, is soluble in boiling water, is insoluble in ethanol, diethyl ether and benzene, and has obvious acidity. It can be used for preparing azo dyes, etc., and can also be used as pesticide for preventing and controlling wheat rust. The sulfanilic acid is obtained by reacting aniline with sulfuric acid to form salt and then performing transposition. And (3) dripping aniline into concentrated sulfuric acid for reaction, and pouring the reaction mixture into cold water to obtain colorless precipitate of sulfanilic acid. Cooling, filtering and drying to obtain the sulfanilic acid. Gases containing sulfur substances, aniline and other harmful substances can be generated in the preparation process, and if the gases are directly discharged, adverse effects on the environment and the health of workers can be avoided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tail gas processing apparatus of sulfanilic acid can detach the well harmful substance of flue gas, avoids direct emission to cause adverse effect to environment and workman health.
The technical scheme of the utility model is realized like this:
a tail gas treatment device for sulfanilic acid comprises a heat exchanger, an alkaline washing tower, a spray tower and a purification tower which are sequentially connected;
the alkaline washing tower comprises a first tower body, a liquid storage tank is arranged at the bottom of the first tower body, and alkaline liquor is arranged in the liquid storage tank; the side surface of the first tower body is provided with a first air inlet and a first water outlet, and the top of the first tower body is provided with a first air outlet; the first air inlet is arranged on the first tower body above the liquid storage tank, and the first water outlet is connected with the liquid storage tank;
a plurality of spraying layers are arranged in the first tower body from top to bottom, and each spraying layer comprises a plurality of first spraying pipes; the plurality of second spray pipes are parallel to each other; the bottom of the first spray pipe is provided with a plurality of atomizing nozzles which are uniformly distributed on the second spray pipe;
a guide cylinder is arranged in the first tower body, an interlayer is arranged between the guide cylinder and the inner wall of the first tower body, and vent holes are uniformly arranged on the guide cylinder;
a water outlet pipe is connected between the first water outlet and the uppermost first spray pipe, and a connecting pipe is connected between the first spray pipes except the uppermost first spray pipe and the water outlet pipe;
the plurality of spraying layers are arranged above the guide cylinder, and the liquid storage tank is arranged below the guide cylinder; the first air inlet is communicated with the interlayer.
Further, a drainage plate is arranged above the guide cylinder, the drainage plate is arranged below the first spray pipe at the lowermost layer, and the drainage plate is funnel-shaped.
Further, the aperture of the vent holes increases from bottom to top.
Further, the purification tower comprises a second tower body, a second air inlet is formed in the bottom of the second tower body, and a second air outlet is formed in the top of the second tower body; a filter layer and a filler layer are arranged in the purification tower from bottom to top;
a plurality of first clapboards and a plurality of second clapboards are arranged from top to bottom on the filter layer, the first clapboards and the second clapboards are arranged in a staggered mode, a filter plate is arranged between the first clapboards and the second clapboards, and the filter plate sequentially comprises a wet curtain, a third filter screen and glass fiber cloth according to the airflow flowing direction.
Furthermore, the packing layer comprises a first filter screen and a second filter screen, a filler is filled between the first filter screen and the second filter screen, and the filler is Raschig ring filler or ceramic filler.
The utility model provides a tail gas processing apparatus of sulfanilic acid has following advantage:
1) the tail gas in the process of producing sulfanilic acid firstly enters a heat exchanger, and the heat exchanger can recover heat in the tail gas generated in the process of producing sulfanilic acid, so that the energy utilization rate is improved. Then the tail gas enters the alkaline washing tower through the first gas inlet, the tail gas enters the first tower body through the first gas inlet, the alkali liquor enters the spraying layer through the first water outlet, is sprayed out of the atomizing spray head and is combined with the gas, and the acid in the tail gas is neutralized and is used for removing sulfur-containing substances in the tail gas; and the tail gas enters the purification tower again, and is purified again by the purification tower, so that the tail gas reaches the emission standard, and adverse effects on the environment and the health of workers caused by direct emission are avoided.
2) A plurality of spraying layers are arranged in the alkaline washing tower from top to bottom, so that acid in the tail gas can be effectively and fully neutralized; the draft tube can make the cooled tail gas enter into the interlayer firstly, then enter into the first tower body through the vent hole on the draft tube, the setting of the draft tube can make the tail gas be divided into a plurality of small flows, and the neutralization reaction of the tail gas and the alkali liquor is more sufficient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for treating tail gas of sulfanilic acid provided by the present invention;
FIG. 2 is a schematic diagram of the caustic tower of FIG. 1;
FIG. 3 is a schematic structural view of the water washing column in FIG. 1;
fig. 4 is a schematic view of the purification tower of fig. 1.
In the figure:
1. a heat exchanger; 2. an alkaline washing tower; 3. a spray tower; 4. a purification tower; 5. a first tower body; 6. a liquid storage tank; 7. a first shower pipe; 8. a second shower pipe; 9. an atomizing spray head; 10. a draft tube; 11. a drainage plate; 12. a second tower body; 13. a first separator; 14. a second separator; 15. a filter layer; 16. a water outlet pipe; 17. A filter plate; 18. a third tower body; 19. a water storage tank; 20. and (4) connecting the pipes.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1 to 4, a tail gas treatment device for sulfanilic acid comprises a heat exchanger 1, an alkaline washing tower 2, a spray tower 2 and a purification tower 4 which are connected in sequence;
the alkaline washing tower 2 comprises a first tower body 5, a liquid storage tank 6 is arranged at the bottom of the first tower body 5, and alkaline liquor is arranged in the liquid storage tank 6; a first air inlet and a first water outlet are arranged on the side surface of the first tower body 5, and a first air outlet is arranged at the top of the first tower body; the first air inlet is arranged on the first tower body 5 above the liquid storage tank 6, and the first water outlet is connected with the liquid storage tank 6;
a plurality of spraying layers are arranged in the first tower body 5 from top to bottom, and each spraying layer comprises a plurality of first spraying pipes 7; the first spray pipes 7 are parallel to each other; the bottoms of the first spray pipes 7 are provided with a plurality of atomizing nozzles 9, and the atomizing nozzles are uniformly distributed on the first spray pipes 7;
a guide shell 10 is arranged in the first tower body 5, an interlayer is arranged between the guide shell 10 and the inner wall of the first tower body 5, and vent holes are uniformly arranged on the guide shell 10;
a water outlet pipe 16 is connected between the first water outlet and the uppermost first spray pipe 7, and a connecting pipe 20 is connected between the first spray pipes 7 except the uppermost first spray pipe 7 and the water outlet pipe 16;
the plurality of spraying layers are arranged above the guide shell 10, and the liquid storage tank 6 is arranged below the guide shell 10; the first air inlet is communicated with the guide shell 10.
Above-mentioned, heat exchanger 1 can retrieve the heat in the tail gas that produces in the process of producing sulfanilic acid.
The alkaline washing tower 2 is used for neutralizing acid in tail gas, the tail gas enters the first tower body 5 from the first air inlet, alkali liquor enters the spraying layer from the first water outlet, is sprayed out from the atomizing nozzle 9 and is combined with gas, and the acid in the tail gas is neutralized.
The washing tower can clean the tail gas, so that the purity of the flue gas is improved; it should be noted that the water washing tower comprises a third tower body 18, a water storage tank 19 is arranged in the tower body, water is arranged in the water storage tank 19, a second spray pipe 8 is arranged above the water storage tank 19, and a water spray head is arranged at the bottom of the second spray pipe 8; a third air inlet is arranged on one side of the third tower body 18 above the water storage tank 19 and below the second spray pipe 8, and a third air outlet is arranged at the bottom.
It is noted that the spray layers arranged from top to bottom can effectively and fully neutralize the acid in the tail gas; the draft tube 10 can make the tail gas after the cooling enter into the intermediate layer earlier, and then the air vent on the draft tube 10 enters into first tower body 5, and the setting of draft tube 10 can make the tail gas cut apart into a plurality of little air currents, and the neutralization reaction of just tail gas and alkali lye is more abundant.
It should be noted that the aperture of the vent holes on the draft tube 10 increases from bottom to top; the arrangement of the vent holes can improve the uniformity of the tail gas distribution in the second tower body 12.
In this embodiment, the drainage plate 11 is arranged above the liquid storage tank 6, the drainage plate 11 is arranged below the first spray pipe 7 at the lowermost layer, the drainage plate 11 is funnel-shaped, and the bottom of the drainage plate 11 is provided with a gate. The water and alkali liquid generated by acid-alkali neutralization can be guided to flow into the alkali liquid tank.
In the present embodiment, the purification tower 4 includes a second tower body 12, the second tower body 12 is provided with a second air inlet at the bottom and a second air outlet at the top; a filter layer 15 and a filler layer are arranged in the purification tower 4 from bottom to top; the filter layer 15 is provided with a plurality of first clapboards 13 and a plurality of second clapboards 14 from top to bottom, the first clapboards 13 and the second clapboards 14 are arranged in a staggered mode, a filter plate 17 is longitudinally arranged between the first clapboards 13 and the second clapboards 14, and the filter plate 17 sequentially comprises a wet curtain, a third filter screen and glass fiber cloth according to the airflow flowing direction. The filtering layer 15 and the filler layer arranged in the purifying tower 4 can remove multiple nitrogen oxides and sulfur oxides in the tail gas, so that the treatment efficiency is high; the filter 17 can prolong the detour of the tail gas in the second tower body 12, and can remove harmful substances in the tail gas.
Wherein, the number of the first partition boards 13 and the second partition boards 14 may be 4.
It should be noted that the filter layer 15 includes a first filter and a second filter, a filler is filled between the first filter and the second filter, and the filler is a raschig ring filler or a ceramic filler; the filter layer 15 can remove impurities from the exhaust gas.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The tail gas treatment device for sulfanilic acid is characterized by comprising a heat exchanger, an alkaline washing tower, a spray tower and a purification tower which are sequentially connected;
the alkaline washing tower comprises a first tower body, a liquid storage tank is arranged at the bottom of the first tower body, and alkaline liquor is arranged in the liquid storage tank; the side surface of the first tower body is provided with a first air inlet and a first water outlet, and the top of the first tower body is provided with a first air outlet; the first air inlet is arranged on the first tower body above the liquid storage tank, and the first water outlet is connected with the liquid storage tank;
a plurality of spraying layers are arranged in the first tower body from top to bottom, and each spraying layer comprises a plurality of first spraying pipes; the plurality of second spray pipes are parallel to each other; the bottom of the first spray pipe is provided with a plurality of atomizing nozzles which are uniformly distributed on the second spray pipe;
a guide cylinder is arranged in the first tower body, an interlayer is arranged between the guide cylinder and the inner wall of the first tower body, and vent holes are uniformly arranged on the guide cylinder;
a water outlet pipe is connected between the first water outlet and the uppermost first spray pipe, and a connecting pipe is connected between the first spray pipes except the uppermost first spray pipe and the water outlet pipe;
the plurality of spraying layers are arranged above the guide cylinder, and the liquid storage tank is arranged below the guide cylinder; the first air inlet is communicated with the interlayer.
2. The device for treating the tail gas of sulfanilic acid as claimed in claim 1, wherein a flow guide plate is arranged above the flow guide cylinder, the flow guide plate is arranged below the first spray pipe at the lowest layer, and the flow guide plate is funnel-shaped.
3. The apparatus for treating tail gas of sulfanilic acid as claimed in claim 1, wherein the diameter of the vent hole increases from bottom to top.
4. The tail gas treatment device of sulfanilic acid according to claim 1, wherein the purification tower comprises a second tower body, a second gas inlet is arranged at the bottom of the second tower body, and a second gas outlet is arranged at the top of the second tower body; a filter layer and a filler layer are arranged in the purification tower from bottom to top;
a plurality of first clapboards and a plurality of second clapboards are arranged from top to bottom on the filter layer, the first clapboards and the second clapboards are arranged in a staggered mode, a filter plate is longitudinally arranged between the first clapboards and the second clapboards, and the filter plate sequentially comprises a wet curtain, a third filter screen and glass fiber cloth according to the airflow flowing direction.
5. The device for treating the tail gas of sulfanilic acid as claimed in claim 4, wherein the filler layer comprises a first filter screen and a second filter screen, a filler is filled between the first filter screen and the second filter screen, and the filler is Raschig ring filler or ceramic filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922491237.5U CN212215091U (en) | 2019-12-31 | 2019-12-31 | Tail gas treatment device for sulfanilic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922491237.5U CN212215091U (en) | 2019-12-31 | 2019-12-31 | Tail gas treatment device for sulfanilic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212215091U true CN212215091U (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922491237.5U Active CN212215091U (en) | 2019-12-31 | 2019-12-31 | Tail gas treatment device for sulfanilic acid |
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| Country | Link |
|---|---|
| CN (1) | CN212215091U (en) |
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2019
- 2019-12-31 CN CN201922491237.5U patent/CN212215091U/en active Active
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