CN215886376U - A electricity removes fog sour water recycling system for spent acid regenerating unit - Google Patents
A electricity removes fog sour water recycling system for spent acid regenerating unit Download PDFInfo
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- CN215886376U CN215886376U CN202122389500.7U CN202122389500U CN215886376U CN 215886376 U CN215886376 U CN 215886376U CN 202122389500 U CN202122389500 U CN 202122389500U CN 215886376 U CN215886376 U CN 215886376U
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- 239000002253 acid Substances 0.000 title claims abstract description 120
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- 230000001172 regenerating effect Effects 0.000 title description 3
- 230000005611 electricity Effects 0.000 title description 2
- 238000010521 absorption reaction Methods 0.000 claims abstract description 67
- 238000003860 storage Methods 0.000 claims abstract description 31
- 239000002699 waste material Substances 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000746 purification Methods 0.000 claims abstract description 15
- 230000008929 regeneration Effects 0.000 claims abstract description 15
- 238000011069 regeneration method Methods 0.000 claims abstract description 15
- 239000003595 mist Substances 0.000 claims abstract description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 16
- 239000000945 filler Substances 0.000 claims description 3
- 238000005201 scrubbing Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000012856 packing Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000026058 directional locomotion Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- -1 and simultaneously Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Abstract
The utility model discloses an electric defogging acid water recycling system for a waste acid regeneration device, which comprises: the purification section comprises an electric demister, and the electric demister is used for removing acid mist in the furnace gas; the absorption section comprises an absorption tower and a conversion section, the absorption tower is used for absorbing sulfur trioxide gas and generating sulfuric acid, the conversion section comprises an acid liquor storage tank, a first electric pump and an absorption tank, the acid liquor storage tank is communicated with the electric demister and used for storing acid liquor from the electric demister, the first electric pump is communicated with the acid liquor storage tank and the absorption tank, the first electric pump is used for pumping the acid liquor in the acid liquor storage tank to the absorption tank, the absorption tank is communicated with the absorption tower, and the absorption tank is used for providing the acid liquor for the absorption tower. The utility model can reduce the production cost and realize the recycling of the acid liquor.
Description
Technical Field
The utility model relates to the technical field of waste acid regeneration, in particular to an electric defogging acid water recycling system for a waste acid regeneration device.
Background
A waste acid regenerating device, such as a system and a method for dry-process acid production from sulfur-containing waste liquid shown in patent document 1, wherein the system comprises a sulfur-containing waste liquid incineration device, a furnace gas treatment device, a conversion device and an absorption device; the conversion device is a 3+2 five-section twice conversion device or a 3+1 four-section twice conversion device, and a furnace gas outlet of the drying tower is communicated with the conversion device; the absorption device comprises a first absorption tower and a second absorption tower. After the system and the method are adopted to carry out pretreatment such as incineration, waste heat recovery, dilute acid purification, cooling, drying and the like on the sulfur-containing waste liquid, the acid is prepared by adopting a two-conversion and two-absorption process, and the total conversion rate reaches over 99.9 percent.
In the regeneration process, after furnace gas generated by cracking waste acid in an incinerator is purified by a purification section, part of sulfur trioxide is not washed and absorbed by the purification section, if the waste acid directly enters a rear system to be condensed to form a diluted acid to corrode an equipment pipeline when meeting water, the waste acid can firstly enter a secondary electric demisting to remove acid mist, the principle is that alternating current is converted into direct current through a static control device and a direct current high-voltage generating device and is sent to the demisting device, a strong electric field is formed between a corona wire (cathode) and an acid mist trapping polar plate (anode), so that air molecules are ionized to instantaneously generate a large amount of electrons, positive ions and negative ions, the electrons and the ions perform directional motion under the action of the electric field force to form a medium for trapping the acid mist, and simultaneously, acid mist particles are charged, and the charged particles perform directional motion under the action of the electric field force to reach an anode plate for trapping the acid mist, then, the charged particles release electrons on the polar plate, so that acid mist is gathered and flows into an acid storage tank of an acid mist remover under the action of gravity, and the purpose of purifying the acid mist is achieved.
Patent document 1CN 103552992A.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electric defogging acid water recycling system for a waste acid regeneration device, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: an electrical demisting sour water reuse system for a spent acid regeneration device, comprising: the purification section comprises an electric demister, and the electric demister is used for removing acid mist in the furnace gas;
and an absorption section comprising an absorption tower for absorbing sulfur trioxide gas and generating sulfuric acid,
the recycling working section comprises an acid liquid storage tank, a first electric pump and an absorption tank, the acid liquid storage tank is communicated with the electric demister and used for storing acid liquid from the electric demister, the first electric pump is communicated with the acid liquid storage tank and the absorption tank, the first electric pump is used for pumping the acid liquid in the acid liquid storage tank to the absorption tank, the absorption tank is communicated with the absorption tower, and the absorption tank is used for providing the acid liquid for the absorption tower.
In some embodiments, the acid solution in the electric demister is conveniently flowed to the acid solution storage tank, so that the electric demister is disposed above the acid solution storage tank to realize self-flow under the gravity effect, and the acid solution storage tank, the first electric pump and the absorption tank are located on the same plane, thereby facilitating layout.
In several embodiments, the electric demister is communicated with the acid liquor storage tank through a pipeline, and a first electric control valve and a first filter are sequentially arranged on the pipeline.
The opening and closing and the filtering effects of the pipeline are realized by the first electric control valve and the first filter, and the acid liquor quality is improved.
In some embodiments, the first electric pump is communicated with the acid storage tank through a pipeline, and the pipeline is provided with a second electric control valve and a second filter.
The second electric control valve and the second filter realize the opening and closing and the filtering effect of the pipeline, and the acid liquor quality is improved.
In some embodiments, a second electric pump is disposed between the absorption tank and the absorption tower, and the second electric pump is used for pumping the acid liquid in the absorption tank to the absorption tower, so as to replenish the acid liquid and the water.
In several embodiments, the purification section further comprises a dynamic wave scrubber and a packing scrubber, and the furnace gas sequentially passes through the dynamic wave scrubber, the packing scrubber and the electric demister.
In several embodiments, the recycling system further comprises a conversion section, and the furnace gas passes through the purification section and then enters the conversion section to produce sulfur trioxide, and then enters the absorption tower to be absorbed.
The utility model has the technical effects and advantages that:
according to the utility model, through the design of the conversion section, the acid liquor originally discharged from the electric demister can be stored in a centralized manner, and then is converted to the absorption section to be used as the supplement of the acid liquor and water, the absorption tower is matched to absorb sulfur trioxide gas to produce acid, so that the cost of acid liquor neutralization and corresponding wastewater discharge is greatly reduced, the cost of the absorption tower for supplementing the acid liquor and water is reduced, and the overall production cost is further reduced; and the acid liquor from the electric demister contains less impurities, completely meets the standard of acid for an absorption tower after being filtered, and greatly reduces the production cost under the condition of not influencing the quality of acid production.
Drawings
FIG. 1 is a schematic diagram of a portion of an embodiment of the present invention;
fig. 2 is a schematic overall structure diagram in the embodiment of the present invention.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The utility model provides an electric defogging acid water recycling system for a waste acid regeneration device as shown in figures 1-2, which mainly comprises a incineration section (not shown in the figure), a purification section 100, a conversion section 400, an absorption section 200 and a conversion section 300, wherein waste acid sequentially passes through the incineration section, the purification section 100, the conversion section 400 and the absorption section 200 to carry out a sulfuric acid regeneration process.
In the incineration working section, fuel gas and high-temperature air after heat exchange enter a waste acid incinerator for combustion and heat supply, the temperature in the incinerator is controlled to be about 1100 ℃, waste acid automatically flows into a waste acid underground tank from a waste acid storage tank, is pressurized by a waste acid pump and then passes through a waste acid spray gun, is atomized to enter the waste acid incinerator for high-temperature decomposition, a main blower at a conversion post operates to ensure that the inside of the waste acid incinerator is in a negative pressure state, the oxygen content in furnace gas discharged from the incinerator is controlled to be about 4 percent, and SO at about 1100 ℃ discharged from the incinerator is controlled to be in a high-temperature decomposition state2And (4) after the furnace gas passes through a waste heat boiler and an air preheater to remove heat, reducing the temperature to about 350-400 ℃, and entering a purification section.
Specifically, the purification section 100 includes an electric demister 110, a dynamic wave scrubber 120 and a filler washing tower 130, and SO generated from the incineration section2The furnace gas passes through the dynamic wave scrubber 120, the packing washing tower 130 and the electric demister 110 in sequence, the dynamic wave scrubber 120 and the reverse spray pipe contact with the sprayed dilute acid, the moisture in the dilute acid is rapidly evaporated, the temperature of the furnace gas is reduced (adiabatic humidification process), most of dust and other impurities in the furnace gas are removed, the furnace gas subjected to adiabatic humidification enters the packing washing tower 130 for washing and cooling, the moisture in the furnace gas is further removed, the temperature of the furnace gas is reduced to be lower than 38 ℃, and finally the acid mist in the furnace gas is removed through the electric demister 110 to form acid liquid, so that the acid mist in the furnace gas is reduced to be 0.005g/m3The following.
The acid liquor is recycled through the recycling section 300, wherein the recycling section 300 comprises an acid liquor storage tank 310, a first electric pump 320 and an absorption tank 330, the acid liquor storage tank 310 is communicated with the electric demister 110 through a pipeline and is used for storing the acid liquor from the electric demister 110, a first electric control valve 101 and a first filter 201 are arranged on a communication pipeline between the acid liquor storage tank 310 and the electric demister 110, the first electric control valve 101 is used for controlling the opening and closing of the pipeline, the acid liquor is filtered through the first filter 210 to remove solid impurities, meanwhile, the first electric pump 320 is communicated with the acid liquor storage tank 310 and the absorption tank 330 through a pipeline, the first electric pump 320 is used for pumping the acid liquor in the acid liquor storage tank 310 to the absorption tank 330, a second electric control valve 102 and a second filter 202 are also arranged between the first electric pump 320 and the acid liquor storage tank 310, and the second electric control valve 102 is used for opening and closing the pipeline, the acid liquid is prevented from flowing backwards, and is filtered again through the second filter 202, and the absorption tank 330 is communicated with the absorption tower 210, the absorption tank 330 is used for providing the acid liquid for the absorption tower 210, and the absorption tank 330 is communicated with the outside for inputting the conventional sulfuric acid for the absorption section.
A second electric pump 340 is disposed between the absorption tank 330 and the absorption tower 210, and the second electric pump 340 is configured to pump the acid solution in the absorption tank 330 to the absorption tower 210.
The first electric pump and the second electric pump both adopt metering pump structures.
It should be noted that, when the transfer section 300 is arranged, the electric demister 110 needs to be disposed at a position above the acid liquor storage tank 310 to achieve a gravity-flow effect of the acid liquor, no electric pump is required to pump, and the power consumption is reduced, and the acid liquor storage tank 310, the first electric pump 320, and the absorption tank 330 may be directly disposed on the same layer, and if the electric demister 110 is disposed at a third layer, the acid liquor storage tank 310, the first electric pump 320, and the absorption tank 330 are disposed at a second layer.
Finally, the conversion section 400 is connected to the purification section 100, and can adopt the conversion structure in patent document 1, and adopt two conversion processes of 3+2 to generate sulfur trioxide, and then enter the absorption section 200 to absorb the sulfur trioxide to produce sulfuric acid.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (7)
1. An electric demisting sour water reuse system for a spent acid regeneration device, comprising:
the purification section comprises an electric demister, and the electric demister is used for removing acid mist in the furnace gas;
an absorption section comprising an absorption tower for absorbing sulfur trioxide gas and generating sulfuric acid,
the acid liquor storage tank is communicated with the electric demister and used for storing acid liquor from the electric demister, the first electric pump is communicated with the acid liquor storage tank and the absorption tank, the first electric pump is used for pumping the acid liquor in the acid liquor storage tank to the absorption tank, the absorption tank is communicated with the absorption tower, and the absorption tank is used for providing the acid liquor for the absorption tower.
2. The electric demister acid water reuse system for waste acid regeneration devices of claim 1, wherein the electric demister is disposed above an acid storage tank, and the acid storage tank, the first electric pump and the absorption tank are located on the same plane.
3. The electric defogging acid water reuse system for a waste acid regeneration device according to claim 2, wherein a first electric control valve and a first filter are arranged between the electric defogger and the acid storage tank.
4. The electric defogging acid water reuse system for a waste acid regeneration device according to claim 1, wherein a second electric control valve and a second filter are arranged between the first electric pump and the acid storage tank.
5. The electric defogging acid water reuse system for a waste acid regeneration device according to claim 1, wherein a second electric pump is arranged between the absorption tank and the absorption tower, and the second electric pump is used for pumping the acid liquid in the absorption tank to the absorption tower.
6. The electric defogging acid water recycling system for a waste acid regeneration device according to claim 1, wherein the purification section further comprises a power wave scrubber and a filler scrubbing tower, and the furnace gas sequentially passes through the power wave scrubber, the filler scrubbing tower and the electric defogger.
7. The electric defogging acid water recycling system for a waste acid regeneration device according to claim 6, further comprising a conversion section, wherein the furnace gas passes through the purification section, enters the conversion section and then enters the absorption tower for absorption.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122389500.7U CN215886376U (en) | 2021-09-29 | 2021-09-29 | A electricity removes fog sour water recycling system for spent acid regenerating unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122389500.7U CN215886376U (en) | 2021-09-29 | 2021-09-29 | A electricity removes fog sour water recycling system for spent acid regenerating unit |
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| Publication Number | Publication Date |
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| CN215886376U true CN215886376U (en) | 2022-02-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742182A (en) * | 2023-08-15 | 2023-09-12 | 菏泽天盈新能源有限公司 | Automatic recovery unit of old and useless lead accumulator electrolyte |
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2021
- 2021-09-29 CN CN202122389500.7U patent/CN215886376U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742182A (en) * | 2023-08-15 | 2023-09-12 | 菏泽天盈新能源有限公司 | Automatic recovery unit of old and useless lead accumulator electrolyte |
| CN116742182B (en) * | 2023-08-15 | 2023-11-03 | 菏泽天盈新能源有限公司 | Automatic recovery unit of old and useless lead accumulator electrolyte |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240325 Address after: No. 88, Dongfang Avenue, Zhapu Town, Jiaxing City, Zhejiang Province, 314201 Patentee after: ZHEJIANG MEIFU PETROLEUM CHEMICAL CO.,LTD. Country or region after: China Address before: 314000 floor 2, building 3, No. 988, Yashan West Road, gangang District, Jiaxing City, Zhejiang Province Patentee before: Zhejiang maidui Technology Co.,Ltd. Country or region before: China |