CN216125447U - Resourceful treatment device for sulfur dioxide tail gas generated in sulfonation reaction of 2-naphthalenesulfonic acid - Google Patents
Resourceful treatment device for sulfur dioxide tail gas generated in sulfonation reaction of 2-naphthalenesulfonic acid Download PDFInfo
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- CN216125447U CN216125447U CN202121216220.XU CN202121216220U CN216125447U CN 216125447 U CN216125447 U CN 216125447U CN 202121216220 U CN202121216220 U CN 202121216220U CN 216125447 U CN216125447 U CN 216125447U
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- sodium sulfite
- sulfur dioxide
- tail gas
- dioxide tail
- naphthalenesulfonic acid
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- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 96
- KVBGVZZKJNLNJU-UHFFFAOYSA-N naphthalene-2-sulfonic acid Chemical compound C1=CC=CC2=CC(S(=O)(=O)O)=CC=C21 KVBGVZZKJNLNJU-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000006277 sulfonation reaction Methods 0.000 title claims abstract description 25
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 136
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 93
- 238000001179 sorption measurement Methods 0.000 claims abstract description 69
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 68
- 238000010521 absorption reaction Methods 0.000 claims abstract description 50
- 238000001035 drying Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 15
- 238000004064 recycling Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 24
- 239000012535 impurity Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000002808 molecular sieve Substances 0.000 claims description 8
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000005416 organic matter Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 abstract description 26
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000002351 wastewater Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
A resourceful treatment device of 2-naphthalenesulfonic acid sulfonation reaction sulfur dioxide tail gas includes: the absorption device is used for providing a sodium hydroxide solution, and the sulfur dioxide tail gas reacts with the sodium hydroxide solution to obtain a sodium sulfite solution; the adsorption device is communicated with the absorption device and is used for purifying the sodium sulfite solution; the drying device is communicated with the adsorption device and is used for drying the purified sodium sulfite solution to obtain a sodium sulfite solid; and the controller is used for controlling the operation of the absorption device, the adsorption device and the drying device. The utility model relates to a recycling treatment device for sulfur dioxide tail gas in 2-naphthalenesulfonic acid sulfonation reaction, which obtains sodium sulfite solution by absorbing sulfur dioxide with liquid caustic soda, and obtains sodium sulfite solid after purifying and drying the sodium sulfite solution, thereby increasing the benefit of enterprises and reducing the pressure of the enterprises on treating waste water.
Description
Technical Field
The utility model belongs to the technical field of chemical production, and particularly relates to a resource treatment device for sulfur dioxide tail gas generated in 2-naphthalenesulfonic acid sulfonation reaction.
Background
In the chemical production, sulfur dioxide is generated in the sulfonation reaction process of 2-naphthalenesulfonic acid, and the sulfur dioxide is directly discharged to pollute the atmosphere. In the prior art, sulfur dioxide tail gas discharged in the sulfonation reaction process of 2-naphthalenesulfonic acid is usually treated by alkali absorption, and the wastewater treatment cost after alkali absorption is higher, so that the sewage treatment cost of enterprises is increased, and the waste of resources is also caused. Therefore, a resource treatment device for sulfur dioxide tail gas generated in the sulfonation reaction of 2-naphthalenesulfonic acid is needed to be designed, so that the sulfur dioxide tail gas can be recycled, the benefits of enterprises are increased, and the treatment cost of the enterprises is also reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a resource treatment device for sulfur dioxide tail gas generated in sulfonation reaction of 2-naphthalenesulfonic acid, which can be used for resource recovery of the sulfur dioxide tail gas.
In order to achieve the purpose, the utility model provides a resource treatment device for sulfur dioxide tail gas in 2-naphthalenesulfonic acid sulfonation reaction, which comprises:
the absorption device is used for providing a sodium hydroxide solution, and the sulfur dioxide tail gas reacts with the sodium hydroxide solution to obtain a sodium sulfite solution;
the adsorption device is communicated with the absorption device and is used for purifying the sodium sulfite solution;
a drying device, which is communicated with the adsorption device and is used for drying the purified sodium sulfite solution to obtain sodium sulfite solid;
a controller for controlling the operation of the absorption device, the adsorption device and the drying device.
Preferably, the absorption device comprises an absorption tank and a first material conveying pump, wherein:
an inlet of the absorption tank is communicated with the sulfur dioxide tail gas discharge device, and a sodium hydroxide solution is arranged in the absorption tank and is used for reacting with the sulfur dioxide tail gas to obtain the sodium sulfite solution;
the inlet of the first material conveying pump is communicated with the outlet of the absorption tank, and the controller controls the first material conveying pump to operate so as to convey the sodium sulfite solution.
Preferably, the inlet of the absorption tank is provided with a gas distributor, and the sulfur dioxide tail gas enters the absorption tank through the gas distributor.
Preferably, the concentration of sodium hydroxide in the sodium hydroxide solution is 10-35%.
Preferably, the adsorption device comprises a filter and an adsorption column device; wherein,
the entry of filter with the export intercommunication of first defeated material pump, the export of filter with adsorption column device intercommunication, the filter is used for getting rid of the impurity of sodium sulfite solution, the adsorption column device is got rid of the organic matter of sodium sulfite solution.
Preferably, a filter bag is arranged in the filter and is used for filtering impurities in the sodium sulfite solution;
the entry of filter is equipped with the three-way valve, the entry intercommunication of three-way valve the export of first conveying pump, the first export intercommunication of three-way valve in the filter, the second export intercommunication of three-way valve the export of first conveying pump, the controller control three-way valve change over switch state with first conveying pump switches over corotation or reversal.
Preferably, the adsorption column device comprises a primary adsorption column, a booster pump and a secondary adsorption column, wherein:
the inlet of the first-stage adsorption column is communicated with the outlet of the filter, and the first-stage adsorption column is communicated with the inlet of the second-stage adsorption column through the booster pump.
Preferably, an activated carbon adsorption device is arranged in the primary adsorption column and is used for removing impurities in the sodium sulfite solution; and a molecular sieve adsorption device is arranged in the secondary adsorption column, is of a porous structure and is used for removing the organic matters of the sodium sulfite solution.
Preferably, the drying device comprises a receiving groove, a second material conveying pump and a drying tower; wherein,
the inlet of the receiving groove is communicated with the outlet of the secondary adsorption column and is used for storing liquid;
and the outlet of the receiving groove is communicated with the inlet of the drying tower through the second material conveying pump.
Preferably, the drying tower is used for removing water in the sodium sulfite solution at high temperature to obtain water vapor and sodium sulfite solid, and the sodium sulfite solid is collected through an outlet of the drying tower;
the absorption tank is provided with a liquid inlet, and the water vapor is collected through condensation treatment and is communicated with the liquid inlet of the absorption tank.
The utility model relates to a resource treatment device for sulfur dioxide tail gas in 2-naphthalenesulfonic acid sulfonation reaction, which has the beneficial effects that: the sodium sulfite solution is obtained by absorbing sulfur dioxide with liquid caustic soda, and sodium sulfite solid is obtained after the sodium sulfite solution is purified and dried, so that the benefit of an enterprise is increased, and the pressure of the enterprise for treating wastewater is reduced.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
FIG. 1 shows a schematic flow diagram of a recycling device for sulfur dioxide tail gas from 2-naphthalenesulfonic acid sulfonation reaction according to one embodiment of the present invention;
description of reference numerals:
1 absorption tank, 2 first delivery pumps, 3 filters, 4 first-stage adsorption columns, 5 booster pumps, 6 second-stage adsorption columns, 7 receiving tanks, 8 second delivery pumps, 9 drying towers, 10 three-way valves and 11 condensing units.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
In order to solve the problems in the prior art, the utility model provides a resource treatment device for sulfur dioxide tail gas generated in sulfonation reaction of 2-naphthalenesulfonic acid, which comprises the following components:
the absorption device is used for providing a sodium hydroxide solution, and the sulfur dioxide tail gas reacts with the sodium hydroxide solution to obtain a sodium sulfite solution;
the adsorption device is communicated with the absorption device and is used for purifying the sodium sulfite solution;
the drying device is communicated with the adsorption device and is used for drying the purified sodium sulfite solution to obtain a sodium sulfite solid;
and the controller is used for controlling the operation of the absorption device, the adsorption device and the drying device.
The utility model relates to a resource treatment device for sulfur dioxide tail gas generated in 2-naphthalenesulfonic acid sulfonation reaction, which is used for treating sulfur dioxide tail gas generated in 2-naphthalenesulfonic acid sulfonation reaction, absorbing sulfur dioxide by liquid alkali, namely sodium hydroxide solution to obtain sodium sulfite solution, purifying and drying the sodium sulfite solution to obtain sodium sulfite solid, thereby increasing the benefit of enterprises and reducing the pressure of the enterprises on treating waste water.
Preferably, the absorption device comprises an absorption tank 1 and a first material conveying pump 2, wherein:
an inlet of the absorption tank 1 is communicated with a sulfur dioxide tail gas discharge device, and a sodium hydroxide solution is arranged in the absorption tank 1 and is used for reacting with the sulfur dioxide tail gas to obtain a sodium sulfite solution;
the inlet of the first material delivery pump 2 is communicated with the outlet of the absorption tank 1, and the controller controls the first material delivery pump 2 to operate so as to deliver the sodium sulfite solution to the next treatment equipment.
The sodium hydroxide solution, i.e. caustic soda liquid, is used for reacting with sulfur dioxide to generate sodium sulfite, and the caustic soda liquid can be prepared by mixing solid sodium hydroxide and water.
Preferably, the concentration of the sodium hydroxide in the sodium hydroxide solution is 10-35% to obtain a better reaction effect.
As a more preferable scheme, the concentration of the sodium hydroxide in the sodium hydroxide solution is 10-20% so as to obtain a better reaction effect.
In this example, the concentration of sodium hydroxide in the sodium hydroxide solution was 15%.
The absorption tank 1 is common device, and in this embodiment, the entry of absorption tank 1 is equipped with gas distributor, and gas distributor is porous structure, and sulfur dioxide tail gas passes through in gas distributor gets into absorption tank 1 to increase the gaseous output range of sulfur dioxide, make the gaseous distribution of sulfur dioxide wider, be convenient for accelerate the reaction. The absorption tank 1 is provided with a stirring device (not shown in the figure) for stirring the sodium hydroxide solution.
The adsorption device comprises a filter 3 and an adsorption column device; wherein,
the entry of filter 3 and the export intercommunication of first defeated material pump 2, the export and the adsorption column device intercommunication of filter 3, filter 3 is used for getting rid of the impurity of sodium sulfite solution, and the organic matter of sodium sulfite solution is got rid of to the adsorption column device.
A filter bag is arranged in the filter 3 and is used for filtering impurities in the sodium sulfite solution;
the inlet of the filter 3 is provided with a three-way valve 10, the inlet of the three-way valve 10 is communicated with the outlet of the first material conveying pump 2, the first outlet of the three-way valve 10 is communicated with the inside of the filter 3, the second outlet of the three-way valve 10 is communicated with the outlet of the first material conveying pump 2, and the controller controls the state of a switch of the three-way valve 10 and the switching of the first material conveying pump 2 to rotate forwards or reversely.
The filter bag of the filter 3 is replaceable, and the insoluble substances in the sodium sulfite solution can be removed under the action of the filter bag, so that the purpose of purification is realized.
In this embodiment, the first feed pump 2 is a two-way pump, a three-way valve 10 is disposed at an inlet of the filter 3, the first feed pump 2 rotates forward in a normal state, the inlet of the three-way valve 10 is communicated with a first outlet, and a sodium sulfite solution is transported from the absorption tank 1 to the filter 3 through the first feed pump 2; when the inlet of the three-way valve 10 is communicated with the second outlet, the first material delivery pump 2 is reversed, and the sodium sulfite solution is reversely delivered from the second outlet to the absorption tank 1 through the first material delivery pump 2 and enters from the outlet of the absorption tank 1.
According to the treatment device, the sulfur dioxide tail gas reacts with the sodium hydroxide solution to obtain sodium sulfite solution containing impurities, the impurities are precipitated after the treatment device is operated for a period of time, the conveying flow of a conveying pipeline is reduced due to long-time operation, the automatic backwashing structure is formed by matching the three-way valve 10 with the first conveying pump 2, the pipeline between the first conveying pump 2 and the absorption tank 1 and the filter bag is backwashed, the precipitated impurities are flushed away, and then the pipeline enters the filter bag again for filtration, so that the motion effect of the equipment is improved, and the impurity deposition of the pipeline is reduced.
In this embodiment, the operation of the three-way valve 10 and the first material delivery pump 2 may be automatically controlled by the controller, and after the operation is performed for a preset time, the controller controls the three-way valve 10 to switch the open state and the forward rotation or the reverse rotation of the first material delivery pump 2, so as to implement the automatic backwashing process. In the back flushing process, the liquid in the absorption tank 1 can not flow outwards through the pressure head of the pump.
The adsorption column device comprises a first-stage adsorption column 4, a booster pump 5 and a second-stage adsorption column 6, wherein:
the inlet of the first-stage adsorption column 4 is communicated with the outlet of the filter 3, and the first-stage adsorption column 4 is communicated with the inlet of the second-stage adsorption column 6 through a booster pump 5.
An active carbon adsorption device is arranged in the primary adsorption column 4, and comprises active carbon with a porous structure and is used for removing impurities of the sodium sulfite solution, such as impurities which are not filtered by the filter 3 such as insoluble substances, suspended substances, mechanical impurities, fiber short fibers or heavy metal ions;
be equipped with molecular sieve adsorption equipment in the second grade adsorption column 6, molecular sieve adsorption equipment is porous structure for get rid of the organic matter to sodium sulfite solution, molecular sieve adsorption equipment can be to sodium sulfite solution decoloration, get rid of impurity and COD. In this embodiment, molecular sieve adsorption equipment is micro-nano porous structure to carry out hydrophobic oleophylic treatment to the surface through silane coupling agent, molecular sieve adsorption equipment through after handling adsorbs oil, gets rid of organic matter such as COD, and the removal processing rate of COD can be reduced to more than 600mg/l from 16000mg/l, has improved the treatment rate greatly, adsorbs through active carbon and molecular sieve, has reduced the content of organic matter in the sodium sulfite, and occupation of land is few, and the cost of labor is low. Purifying the sodium sulfite solution by matching a first-stage adsorption column 4 and a second-stage adsorption column 6 to be dried.
The first-stage adsorption column 4 and the second-stage adsorption column 6 can be two independent adsorption column devices, can also be integrated in one device, and can be realized by reasonable structural design according to needs.
The drying device comprises a receiving groove 7, a second material conveying pump 8 and a drying tower 9; wherein,
the inlet of the receiving groove 7 is communicated with the outlet of the secondary adsorption column 6 and is used for storing liquid;
the outlet of the receiving groove 7 is communicated with the inlet of the drying tower 9 through a second material conveying pump 8.
The drying tower 9 is used for removing moisture in the sodium sulfite solution at high temperature to obtain water vapor and sodium sulfite solid, and the sodium sulfite solid is collected through an outlet of the drying tower 9;
the absorption tank 1 is provided with a liquid inlet, and the water vapor is collected through condensation treatment and is communicated with the liquid inlet of the absorption tank 1.
The receiving tank 7 is used for storing the sodium sulfite solution purified by the adsorption column device to be dried; sodium sulfite solution of storage is carried to drying tower 9 in through second feeding pump 8, drying tower 9 is common spray drier, interior film dryer and atomising head of establishing, sodium sulfite solution is spout by the atomising head through the pressure boost of second feeding pump 8, form vapor through high temperature, dry through the film dryer, form the sodium sulfite solid after the dehydration and collect the packing to the export of drying tower 9, sodium sulfite can be used for selling, the benefit of enterprise has also been increased simultaneously and has been reduced the processing cost of enterprise, vapor passes through the condensation and becomes liquid water, and retrieve the liquid entry to absorption tank 1 through collecting, can be used for configuring sodium hydroxide solution. The water vapor is condensed and collected by a common condensing device 11, and the specific structure and principle are not described in detail.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A resourceful treatment device for sulfur dioxide tail gas generated in sulfonation reaction of 2-naphthalenesulfonic acid is characterized by comprising the following components:
the absorption device is used for providing a sodium hydroxide solution, and the sulfur dioxide tail gas reacts with the sodium hydroxide solution to obtain a sodium sulfite solution;
the adsorption device is communicated with the absorption device and is used for purifying the sodium sulfite solution;
a drying device, which is communicated with the adsorption device and is used for drying the purified sodium sulfite solution to obtain sodium sulfite solid;
a controller for controlling the operation of the absorption device, the adsorption device and the drying device.
2. The recycling device for sulfur dioxide tail gas generated in sulfonation of 2-naphthalenesulfonic acid according to claim 1, wherein the absorption device comprises an absorption tank (1) and a first material delivery pump (2), and wherein:
an inlet of the absorption tank (1) is communicated with the sulfur dioxide tail gas discharge device, and a sodium hydroxide solution is arranged in the absorption tank (1) and is used for reacting with the sulfur dioxide tail gas to obtain the sodium sulfite solution;
the inlet of the first material conveying pump (2) is communicated with the outlet of the absorption tank (1), and the controller controls the first material conveying pump (2) to operate so as to convey the sodium sulfite solution.
3. The resource treatment device of the sulfur dioxide tail gas generated in the sulfonation of 2-naphthalenesulfonic acid according to claim 2, characterized in that a gas distributor is arranged at the inlet of the absorption tank (1), and the sulfur dioxide tail gas enters the absorption tank (1) through the gas distributor.
4. The recycling device for sulfur dioxide tail gas generated in sulfonation of 2-naphthalenesulfonic acid according to claim 2, wherein the concentration of sodium hydroxide in the sodium hydroxide solution is 10-35%.
5. The resource treatment device of the sulfur dioxide tail gas generated in the sulfonation of 2-naphthalenesulfonic acid according to claim 2, wherein the adsorption device comprises a filter (3) and an adsorption column device; wherein,
the entry of filter (3) with the export intercommunication of first conveying pump (2), the export of filter (3) with adsorption column device intercommunication, filter (3) are used for getting rid of the impurity of sodium sulfite solution, adsorption column device gets rid of the organic matter of sodium sulfite solution.
6. The recycling treatment device of sulfur dioxide tail gas generated in sulfonation of 2-naphthalenesulfonic acid according to claim 5, wherein a filter bag is arranged in the filter (3) for filtering impurities in the sodium sulfite solution;
the entry of filter (3) is equipped with three-way valve (10), the entry intercommunication of three-way valve (10) the export of first feeding pump (2), the first export intercommunication of three-way valve (10) in filter (3), the second export intercommunication of three-way valve (10) the export of first feeding pump (2), controller control three-way valve (10) change over switch state with first feeding pump (2) switch over corotation or reversal.
7. The resource treatment device of the sulfur dioxide tail gas generated in the sulfonation of 2-naphthalenesulfonic acid according to claim 5, wherein the adsorption column device comprises a primary adsorption column (4), a booster pump (5) and a secondary adsorption column (6), and wherein:
the inlet of the primary adsorption column (4) is communicated with the outlet of the filter (3), and the primary adsorption column (4) is communicated with the inlet of the secondary adsorption column (6) through the booster pump (5).
8. The resource treatment device of the sulfur dioxide tail gas generated in the sulfonation reaction of 2-naphthalenesulfonic acid according to claim 7, characterized in that,
an active carbon adsorption device is arranged in the primary adsorption column (4) and is used for removing impurities in the sodium sulfite solution; and a molecular sieve adsorption device is arranged in the secondary adsorption column (6), is of a porous structure and is used for removing organic matters in the sodium sulfite solution.
9. The recycling device for sulfur dioxide tail gas generated in sulfonation of 2-naphthalenesulfonic acid according to claim 7, wherein the drying device comprises a receiving tank (7), a second material delivery pump (8) and a drying tower (9); wherein,
the inlet of the receiving groove (7) is communicated with the outlet of the secondary adsorption column (6) and is used for storing liquid;
the outlet of the receiving groove (7) is communicated with the inlet of the drying tower (9) through the second material conveying pump (8).
10. The resource treatment device of the sulfur dioxide tail gas generated in the sulfonation reaction of 2-naphthalenesulfonic acid according to claim 9, characterized in that,
the drying tower (9) is used for removing water in the sodium sulfite solution at high temperature to obtain water vapor and sodium sulfite solid, and the sodium sulfite solid is collected through an outlet of the drying tower (9);
the absorption tank (1) is provided with a liquid inlet, and the water vapor is collected through condensation treatment and is communicated with the liquid inlet of the absorption tank (1).
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| CN202121216220.XU CN216125447U (en) | 2021-06-01 | 2021-06-01 | Resourceful treatment device for sulfur dioxide tail gas generated in sulfonation reaction of 2-naphthalenesulfonic acid |
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