CN107569995B - Chlorine recovery treatment device and technology - Google Patents
Chlorine recovery treatment device and technology Download PDFInfo
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- CN107569995B CN107569995B CN201710991668.0A CN201710991668A CN107569995B CN 107569995 B CN107569995 B CN 107569995B CN 201710991668 A CN201710991668 A CN 201710991668A CN 107569995 B CN107569995 B CN 107569995B
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- Prior art keywords
- absorption tower
- tower
- chlorine
- step absorption
- liquid
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- 238000011084 recovery Methods 0.000 title claims abstract description 59
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000000460 chlorine Substances 0.000 title claims abstract description 50
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 50
- 238000005516 engineering process Methods 0.000 title description 3
- 238000010521 absorption reaction Methods 0.000 claims abstract description 89
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 21
- 239000002699 waste material Substances 0.000 claims abstract description 10
- 238000001179 sorption measurement Methods 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 14
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 239000002274 desiccant Substances 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 6
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052794 bromium Inorganic materials 0.000 abstract description 5
- 230000002378 acidificating effect Effects 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003933 environmental pollution control Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a chlorine recovery processing device and a process, wherein the device comprises a three-stage adsorption tower; the method comprises the following steps: neutralization absorption in a one-step recovery tower; (ii) alkaline neutralization in a two-step recovery tower; (iii) three-step adsorption drying (IV) one-step neutralization absorption liquid treatment. When the chlorine bottle is replaced, a small amount of leaked chlorine is treated in the process of disassembling the chlorine pipe, the principle that the chlorine is acid gas and is easy to react with alkaline substances is utilized, alkaline liquid in a one-step recovery tower is adopted to neutralize and absorb the leaked chlorine in the process of disassembling the chlorine pipe, and slightly alkaline absorption liquid is discharged into acidic bromine blowing waste liquid for acid-base neutralization treatment; and then drying and recycling the volatilized acid gas by the alkaline substances in the two-step recycling tower, and finally discharging the gas discharged by the two-step recycling tower after the gas is adsorbed and dried in three steps, so that environmental pollution and harm to the body of operators are avoided.
Description
Technical Field
The invention belongs to a chlorine multistage recovery device and a chlorine multistage recovery process, and particularly relates to a chlorine recovery processing device and a chlorine recovery processing process.
Background
The existing concentrated seawater bromine stripping process adopts liquid chlorine as a raw material, and liquid chlorine filling is carried out by a liquid chlorine steel bottle, so that the liquid chlorine steel bottle needs to be replaced frequently. When the chlorine bottle is replaced, a small amount of leaked chlorine is in the process of disassembling the chlorine pipeline, if no harmless treatment is carried out, the operation environment is polluted, and the health of workers is endangered; and secondly, the environment is polluted, which is contrary to the national environmental pollution control requirement.
Disclosure of Invention
The invention provides a chlorine recovery treatment device and a chlorine recovery treatment process, aiming at overcoming the defects existing in the prior art.
The technical scheme of the invention is as follows:
the chlorine recovery treatment device comprises an induced draft fan, an air outlet of the induced draft fan is communicated with an inlet at the lower part of the side wall of a first-step absorption tower, an outlet at the top of the first-step absorption tower is communicated with an inlet at the lower part of the side wall of a second-step absorption tower, an outlet at the top of the second-step absorption tower is communicated with an inlet at the lower part of the side wall of a third-step absorption tower, and an outlet is arranged at the top of the third-step absorption tower; at least one pair of spray heads are arranged at the upper part of the one-step absorption tower, and the spray heads are communicated with the alkali liquor tank through a pump and a pipeline; the first-step absorption tower, the second-step absorption tower and the third-step absorption tower are respectively provided with a first-step tower filler, a second-step tower filler and a third-step tower filler.
The inlets of the first-step absorption tower, the second-step absorption tower and the third-step absorption tower are all positioned below the fillers in the first-step absorption tower, the second-step absorption tower and the third-step absorption tower.
The bottoms of the first-step absorption tower, the second-step absorption tower and the third-step absorption tower are respectively provided with a blowing-out waste liquid outlet.
The one-step tower packing is a polypropylene stepped ring or a glass Raschig ring.
A chlorine recovery treatment process, comprising the steps of:
one-step recovery tower neutralization absorption
The liquid chlorine bottle is arranged opposite to an air inlet of a draught fan, the draught fan sucks a small amount of chlorine leaked in the process of disassembling a chlorine pipeline into the liquid chlorine bottle through an inlet at the lower part of the side wall of the one-step recovery tower, meanwhile, absorption liquid in an alkaline liquid tank is sprayed and injected from a spray head, and primarily purified tail gas is led out through an outlet at the top of the one-step recovery tower;
alkaline neutralization in two-step recovery tower
Tail gas led out of the first-step recovery tower is sucked from an inlet at the lower part of the side wall of the second-step recovery tower, passes through a second-step tower filler in the second-step recovery tower, and is led out from the top of the second-step recovery tower;
three-step adsorption drying
Tail gas led out of the two-step recovery tower is sucked from an inlet at the lower part of the side wall of the three-step recovery tower, passes through a three-step tower filler in the three-step recovery tower, and is discharged to the outside from the top of the three-step recovery tower;
one-step neutralization of the absorption liquid treatment
The liquid after neutralization and absorption in the one-step recovery tower is led out from an outlet at the bottom of the one-step recovery tower and is discharged into a blow-down waste liquid pipeline.
The absorption liquid is an alkaline liquid including, but not limited to, caustic soda solution or potassium hydroxide solution.
The two-stage column packing is an alkaline material including, but not limited to, sodium carbonate or sodium bicarbonate.
The three-step column packing is an adsorption desiccant including, but not limited to, activated carbon or calcium chloride.
The beneficial effects of the invention are as follows:
when the chlorine bottle is replaced, a small amount of leaked chlorine is treated in the process of disassembling the chlorine pipe, the principle that the chlorine is acid gas and is easy to react with alkaline substances is utilized, alkaline liquid in a one-step recovery tower is adopted to neutralize and absorb the leaked chlorine in the process of disassembling the chlorine pipe, and slightly alkaline absorption liquid is discharged into acidic bromine blowing waste liquid for acid-base neutralization treatment; and then drying and recycling the volatilized acid gas by the alkaline substances in the two-step recycling tower, and finally discharging the gas discharged by the two-step recycling tower after the gas is adsorbed and dried in three steps, so that environmental pollution and harm to the body of operators are avoided.
Drawings
Fig. 1 is a schematic diagram of an apparatus used in the present invention.
Wherein:
1. liquid chlorine bottle 2 induced draft fan
3. One-step absorption tower 4 one-step tower packing
5. Shower nozzle 6 lye tank
7. Two-step absorption tower 8 two-step tower packing
9. Three-step absorber 10 three-step tower packing.
Detailed Description
The chlorine recovery processing device and the chlorine recovery processing technology are described in detail below with reference to the attached drawings and examples:
as shown in figure 1, the chlorine recovery treatment device comprises an induced draft fan 2, wherein an air inlet of the induced draft fan 2 is opposite to a liquid chlorine bottle 1, an air outlet of the induced draft fan 2 is communicated with an inlet at the lower part of the side wall of a first-step absorption tower 1, an outlet at the top of the first-step absorption tower 1 is communicated with an inlet at the lower part of the side wall of a second-step absorption tower 7, an outlet at the top of the second-step absorption tower 7 is communicated with an inlet at the lower part of the side wall of a third-step absorption tower 9, and an outlet is arranged at the top of the third-step absorption tower 9; at least one pair of spray heads 5 are arranged at the upper part of the one-step absorption tower 1, and the spray heads 5 are communicated with an alkali liquor tank 6 through pumps and pipelines; the first-step absorption tower 1, the second-step absorption tower 7 and the third-step absorption tower 9 are respectively provided with a first-step tower filler 4, a second-step tower filler 8 and a third-step tower filler 10.
The inlets of the first-step absorption tower 1, the second-step absorption tower 7 and the third-step absorption tower 9 are all positioned below the fillers in the first-step absorption tower.
The bottoms of the first-step absorption tower 1, the second-step absorption tower 7 and the third-step absorption tower 9 are respectively provided with a blowing-out waste liquid outlet.
The one-step tower packing 4 is a polypropylene stepped ring or a glass Raschig ring.
A chlorine recovery treatment process, comprising the steps of:
one-step recovery column neutralization absorption
When the liquid chlorine bottle 1 is replaced, the liquid chlorine bottle 1 is arranged opposite to an air inlet of a draught fan 2, the draught fan 2 sucks a small amount of chlorine leaked in the process of disassembling a chlorine pipeline from an inlet at the lower part of the side wall of the one-step recovery tower 3, meanwhile, absorption liquid in an alkali liquid tank 6 is sprayed and injected from a spray head 5, and the primarily purified tail gas is led out from an outlet at the top of the one-step recovery tower 3;
(ii) alkaline neutralization in a two-step recovery column
Tail gas led out of the first-step recovery tower 3 is sucked from an inlet at the lower part of the side wall of the second-step recovery tower 7, passes through a second-step tower filler 8 in the second-step recovery tower 7, and is led out from the top of the second-step recovery tower 7; the tail gas led out of the one-step recovery tower 3 is acidic water-containing gas, and is dried and recovered with a two-step tower filler 8, namely alkaline substances, in the two-step recovery tower;
(iii) three-step adsorption drying
Tail gas led out of the two-step recovery tower 7 is sucked from an inlet at the lower part of the side wall of the three-step recovery tower 9, passes through a three-step tower filler 10 in the three-step recovery tower 9, and is discharged to the outside from the top of the three-step recovery tower 9;
(IV) one-step neutralization of the absorption liquid
The liquid after neutralization and absorption in the one-step recovery tower 3 is led out from the outlet at the bottom of the one-step recovery tower 3 and is discharged into a waste liquid blowing-out pipeline to be conveyed into acid bromine blowing-out waste liquid for acid-base neutralization treatment.
The absorption liquid is an alkaline liquid including, but not limited to, caustic soda solution or potassium hydroxide solution.
The two-stage column packing 8 is an alkaline material including, but not limited to, sodium carbonate or sodium bicarbonate.
The three-step column packing 10 is an adsorption desiccant including, but not limited to, activated carbon or calcium chloride.
When the chlorine bottle is replaced, a small amount of leaked chlorine is treated in the process of disassembling a chlorine pipe, the principle that chlorine is acid gas and is easy to be subjected to neutralization reaction with alkaline substances is utilized, 5% sodium hydroxide alkaline liquid in a one-step recovery tower is adopted to neutralize and absorb the leaked chlorine in the process of disassembling the chlorine pipe, slightly alkaline absorption liquid is discharged into acidic bromine blowing waste liquid with the pH value of about 4 for acid-base neutralization treatment, and the slightly alkaline absorption liquid is mainly used for ensuring the neutralization effect, so that the absorption liquid is slightly alkaline; and then the sodium carbonate alkaline solid matters in the two-step recovery tower dry and recover the volatilized acid gas containing chlorine, and finally the gas discharged from the two-step recovery tower is discharged after being adsorbed and dried by the three-step activated carbon, and the discharged tail gas has the same components as air after being treated, so that the environmental pollution and the harm to the bodies of operators can be avoided.
Claims (4)
1. A chlorine recovery treatment process is characterized in that:
the chlorine recovery treatment device adopted in the chlorine recovery treatment process comprises an induced draft fan (2) with an air inlet opposite to a liquid chlorine bottle (1), wherein an air outlet of the induced draft fan (2) is communicated with an inlet at the lower part of the side wall of a first-step absorption tower (3), an outlet at the top of the first-step absorption tower (3) is communicated with an inlet at the lower part of the side wall of a second-step absorption tower (7), an outlet at the top of the second-step absorption tower (7) is communicated with an inlet at the lower part of the side wall of a third-step absorption tower (9), and an outlet is arranged at the top of the third-step absorption tower (9); at least one pair of spray heads (5) are arranged at the upper part of the one-step absorption tower (3), and the spray heads (5) are communicated with the alkali liquor tank (6) through pumps and pipelines; the first-step absorption tower (3), the second-step absorption tower (7) and the third-step absorption tower (9) are respectively provided with a first-step tower filler (4), a second-step tower filler (8) and a third-step tower filler (10);
the chlorine recovery treatment process comprises the following steps:
neutralization and absorption in one-step absorption column
The liquid chlorine bottle (1) is arranged opposite to an air inlet of the induced draft fan (2), the induced draft fan (2) sucks a small amount of chlorine leaked in the process of disassembling a chlorine pipeline into the liquid chlorine bottle through an inlet at the lower part of the side wall of the one-step absorption tower (3), meanwhile, absorption liquid in the alkaline liquid tank (6) is sprayed and injected from a spray head (5), and primarily purified tail gas is led out through an outlet at the top of the one-step absorption tower (3);
(ii) alkaline neutralization of the two-stage absorber column
Tail gas led out of the one-step absorption tower (3) is sucked from an inlet at the lower part of the side wall of the two-step absorption tower (7), and is led out from the top of the two-step absorption tower (7) after passing through a two-step tower filler (8) in the two-step absorption tower (7);
(iii) three-step adsorption drying
Tail gas led out of the two-step absorption tower (7) is sucked through an inlet at the lower part of the side wall of the three-step absorption tower (9), and is discharged to the outside from the top of the three-step absorption tower (9) after passing through a three-step tower filler (10) in the three-step absorption tower (9);
(IV) one-step neutralization of the absorption liquid
The liquid after neutralization and absorption in the one-step absorption tower (3) is led out from an outlet at the bottom of the one-step absorption tower (3) and is discharged into a blow-down waste liquid pipeline;
the absorption liquid is alkaline liquid, and the alkaline liquid is caustic soda solution or potassium hydroxide solution;
the two-step tower filling (8) is an alkaline substance, and the alkaline substance is sodium carbonate or sodium bicarbonate;
the three-step tower packing (10) is an adsorption drying agent, and the adsorption drying agent is activated carbon or calcium chloride.
2. The chlorine recovery processing process according to claim 1, wherein: the inlets of the one-step absorption tower (3), the two-step absorption tower (7) and the three-step absorption tower (9) are all positioned below the inner filler.
3. The chlorine recovery processing process according to claim 1, wherein: the bottoms of the first-step absorption tower (3), the second-step absorption tower (7) and the third-step absorption tower (9) are respectively provided with a blowing-out waste liquid outlet.
4. The chlorine recovery processing process according to claim 1, wherein: the one-step tower packing (4) is a polypropylene stepped ring or a glass Raschig ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991668.0A CN107569995B (en) | 2017-10-23 | 2017-10-23 | Chlorine recovery treatment device and technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991668.0A CN107569995B (en) | 2017-10-23 | 2017-10-23 | Chlorine recovery treatment device and technology |
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| Publication Number | Publication Date |
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| CN107569995A CN107569995A (en) | 2018-01-12 |
| CN107569995B true CN107569995B (en) | 2024-04-09 |
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| CN201710991668.0A Active CN107569995B (en) | 2017-10-23 | 2017-10-23 | Chlorine recovery treatment device and technology |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872651B (en) * | 2018-09-04 | 2021-01-08 | 中国科学院过程工程研究所 | Method for removing chloride ions in chlorine-containing sulfuric acid solution by adopting fluidized bed electrode |
| CN112850668A (en) * | 2019-11-27 | 2021-05-28 | 中天科技精密材料有限公司 | Chlorine-containing tail gas helium purification system |
| CN112374461A (en) * | 2020-11-02 | 2021-02-19 | 攀枝花钢企欣宇化工有限公司 | Washing composite set of magnesium electrolysis chlorine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0952022A (en) * | 1995-08-17 | 1997-02-25 | Ishihara Sangyo Kaisha Ltd | Chlorine gas treatment method |
| CN201899969U (en) * | 2010-11-29 | 2011-07-20 | 河北科技大学 | Full-automatic leaked chlorine absorption device |
| CN104307323A (en) * | 2014-11-05 | 2015-01-28 | 华玉叶 | Wet desulphurization method in ferrous metallurgy |
| CN106390683A (en) * | 2016-08-30 | 2017-02-15 | 天津长芦海晶集团有限公司 | Automatic control and absorption technology of distillation produced bromine tail gas |
| CN206372684U (en) * | 2017-01-13 | 2017-08-04 | 山东朗晖石油化学有限公司 | Gas alkaline cleaner is reclaimed in a kind of high-purity chloro ethylene production |
| CN207462942U (en) * | 2017-10-23 | 2018-06-08 | 天津长芦海晶集团有限公司 | A kind of chlorine recycling and processing device |
-
2017
- 2017-10-23 CN CN201710991668.0A patent/CN107569995B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0952022A (en) * | 1995-08-17 | 1997-02-25 | Ishihara Sangyo Kaisha Ltd | Chlorine gas treatment method |
| CN201899969U (en) * | 2010-11-29 | 2011-07-20 | 河北科技大学 | Full-automatic leaked chlorine absorption device |
| CN104307323A (en) * | 2014-11-05 | 2015-01-28 | 华玉叶 | Wet desulphurization method in ferrous metallurgy |
| CN106390683A (en) * | 2016-08-30 | 2017-02-15 | 天津长芦海晶集团有限公司 | Automatic control and absorption technology of distillation produced bromine tail gas |
| CN206372684U (en) * | 2017-01-13 | 2017-08-04 | 山东朗晖石油化学有限公司 | Gas alkaline cleaner is reclaimed in a kind of high-purity chloro ethylene production |
| CN207462942U (en) * | 2017-10-23 | 2018-06-08 | 天津长芦海晶集团有限公司 | A kind of chlorine recycling and processing device |
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