CN102584523A - Semifinished chlorinated solution water washing and alkali washing device used during chlorobenzene production and water washing and alkali washing method - Google Patents
Semifinished chlorinated solution water washing and alkali washing device used during chlorobenzene production and water washing and alkali washing method Download PDFInfo
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- CN102584523A CN102584523A CN2012100213437A CN201210021343A CN102584523A CN 102584523 A CN102584523 A CN 102584523A CN 2012100213437 A CN2012100213437 A CN 2012100213437A CN 201210021343 A CN201210021343 A CN 201210021343A CN 102584523 A CN102584523 A CN 102584523A
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Abstract
The invention provides a semifinished chlorinated solution water washing and alkali washing device used during the chlorobenzene production and a water washing and alkali washing method, belongs to the technical field of water washing and alkali washing devices and water washing and alkali washing device methods during chemical product production, mainly solves the problems that clear water is continuously used and waste acidulous water are continuously discharged, and achieves the cyclic utilization and incontinuous discharge. The semifinished chlorinated solution water washing and alkali washing device is characterized in that an acidulous water outlet of a water washing separator is connected with an inlet of a neutralization tank; an outlet of the neutralization tank is connected with an inlet of a water pump; one end of a water pump outlet pipe is connected with an outlet of the water pump; the other end of the water pump outlet pipe is connected with an inlet of a water cooler; one end of a water cooler outlet pipe is connected with an outlet of the water cooler; the other end of the water cooler outlet pipe is connected with an upper opening of a jet four-way valve; a three-way valve in the middle of the water cooler outlet pipe is connected with a water inlet pipe of an alkali overhead tank; one end of an alkaline water outlet pipe of an alkali washing separator is connected with an alkali washing separator; and the other end of the alkaline water outlet pipe is connected with a semifinished chlorinated solution tank. The semifinished chlorinated solution water washing and alkali washing device provided by the invention has the advantages that the product cost is lowered, the product yield is improved, the purposes of the energy conservation and emission reduction are achieved, and the environment pollution is reduced to a greater degree.
Description
(1) technical field
The present invention relates to washing alkaline cleaner and washing alkali cleaning method in a kind of Chemicals production, what be specifically related to is that thick chlorated liquid is washed alkaline cleaner and washing alkali cleaning method in the benzene chloride production.
(2) background technology
In the benzene chloride production process, benzene and chlorine react in chlorination reactor and generate thick chlorated liquid that contains Benzene Chloride and the chlorinated exhaust that contains hydrogenchloride.Thick chlorated liquid makes thick Benzene Chloride through washing, alkali cleaning, sedimentation, simple distillation, and thick Benzene Chloride is distilled through rectifying tower, makes refining Benzene Chloride, and its Benzene Chloride content is 99.5% (wt); Chlorinated exhaust is after the graphite condenser condensation process, and the input spray absorber sponges wherein contained benzene, and the pure hydrogenchloride that after spray absorbs, obtains goes to produce the by-product hydrochloric acid operation.Why will wash alkali cleaning to thick chlorated liquid, be because do not remove iron trichloride contained in the thick chlorated liquid and hydrogenchloride, not only can cause quality product defective, but also possibly cause the corrosion of equipment such as distillation tower and pipeline.
In the former thick chlorated liquid washing alkali washing process, clear water is used in washing, and clear water is used in the alkali lye preparation.This technical maturity, but the norm quota of consumption is higher, and the clear water consumption is big, and because wastewater treatment capacity is big, has increased the weight of the environmental pollution degree.
(3) summary of the invention
The purpose of this invention is to provide that a kind of production efficiency is high, cost is low, and help alleviating thick chlorated liquid washing alkaline cleaner in the benzene chloride production process of environmental pollution.
Another object of the present invention provides thick chlorated liquid washing alkali cleaning method in a kind of new benzene chloride production.
The technical scheme that the present invention adopts is:
Thick chlorated liquid washing alkaline cleaner comprises thick chlorination flow container, breathes condensing surface, washes pump, washes separator, alkali cleaning pump, alkali cleaning separator, alkali header tank, neutralizing well, water pump, watercooler, injection four-way, water header tank in the benzene chloride production; Thick chlorination flow container is equipped with thick chlorated liquid inlet tube; Thick chlorination flow container is equipped with the breathing condensing surface; Thick chlorated liquid output tube one end is connected with thick chlorination flow container, and the other end is connected with the washing pump intake, and threeway is connected with the outlet of water header tank in the middle of this pipeline, and the washing pump discharge is connected with the washing separator inlet; Thick chlorated liquid outlet pipe one end of washing separator is connected with the washing separator; The other end is connected with the alkali cleaning pump intake; Threeway is connected with the outlet of alkali header tank in the middle of this pipeline, and the alkali cleaning pump discharge is connected with the alkali cleaning separator inlet, and the alkali cleaning separator is equipped with the chlorated liquid outlet pipe; The outlet of washing separator sour water is connected with the neutralizing well inlet, and the neutralizing well outlet is connected with pump entrance, and pump outlet tube one end is connected with exit of pump, and the other end is connected with the watercooler inlet, and threeway is connected with wastewater discharge pipe in the middle of this pipeline; The outlet of watercooler outlet pipe one end and watercooler is connected, the other end with spray that four-way is suitable for reading to be connected, threeway and alkali header tank water inlet pipe coupling in the middle of this pipeline, injection four-way end opening enters the mouth with the water header tank and is connected; Breathing the condensing surface pneumatic outlet is connected with injection four-way one side entrance; Neutralizing well respiratory gas pipeline one end is connected with the neutralizing well pneumostome, and the other end is connected with injection four-way opposite side inlet; The water header tank is equipped with evacuated tube; Neutralizing well is equipped with hydro-oxidation sodium solution pipe, clear water pipe; Alkali cleaning separator alkaline water outlet pipe one end is connected with the alkali cleaning separator, and the other end is connected with thick chlorination flow container; The alkali header tank is equipped with alkali inlet tube, evacuated tube.When the thick chlorated liquid from chlorination reactor gets into thick chlorination flow container; This thick chlorated liquid and together be pumped into the washing separator by washing from the water of water header tank; The thick chlorated liquid that comes out from washing separator top and together be pumped into the alkali cleaning splitter by alkali cleaning from the sodium hydroxide solution of alkali header tank; What came out in alkali cleaning separator top is chlorated liquid, and this chlorated liquid goes postprocessing working procedures; The sour water that comes out in washing splitter bottom gets into neutralizing well; Neutralizing well adds the sodium hydroxide solution from the alkali header tank; Delivered to watercooler from the water that neutralizing well comes out by water pump; Deliver to through the watercooler outlet pipe again and spray four-way and alkali header tank, spray the water entering water header tank that four-way comes out; The alkaline water that comes out from alkali cleaning splitter bottom gets into thick chlorination flow container.
The technical essential of thick chlorated liquid washing alkali cleaning comprises in the benzene chloride production:
1. control pH value=7 of neutralizing well water; 2. control neutralizing well water sodium chloride-containing concentration＜25% (wt); 3. control watercooler outlet water temp＜30 ℃; 4. the concentration of sodium hydroxide solution that adds neutralizing well is 10% (wt); 5. defective if record neutralizing well water, then drain into out-of-bounds, and add clear water.
Advantage of the present invention is: reduce product cost, improve product yield, energy-saving and emission-reduction alleviate environmental pollution largely.
(4) description of drawings
Fig. 1 is the apparatus structure synoptic diagram of a kind of embodiment of the present invention
(5) specific embodiment
Embodiment one
Thick chlorated liquid washing alkaline cleaner in the benzene chloride production; Comprise thick chlorination flow container 2, breathe condensing surface 27, washing pump 4, washing separator 5, alkali cleaning pump 7, alkali cleaning separator 8, alkali header tank 21, neutralizing well 12, water pump 13, watercooler 17, spray four-way 26, water header tank 24; Thick chlorination flow container 2 is equipped with thick chlorated liquid inlet tube 1; Thick chlorination flow container 2 is equipped with breathes condensing surface 27; Thick chlorated liquid output tube 3 one ends are connected with thick chlorination flow container 2; The other end is connected with washing pump 4 inlets; Threeway is connected with 24 outlets of water header tank in the middle of this pipeline, and 4 outlets of washing pump are connected with washing separator 5 inlets, and thick chlorated liquid outlet pipe 6 one ends of washing separator 5 are connected with washing separator 5; The other end is connected with alkali cleaning pump 7 inlets; Threeway is connected with 21 outlets of alkali header tank in the middle of this pipeline, and 7 outlets of alkali cleaning pump are connected with alkali cleaning separator 8 inlets, and alkali cleaning separator 8 is equipped with chlorated liquid outlet pipe 9; The outlet of washing separator 5 sour waters is connected with neutralizing well 12 inlets, and neutralizing well 12 outlets are connected with water pump 13 inlets, and water pump 13 outlet pipes 16 1 ends are connected with water pump 13 outlets, and the other end is connected with watercooler 17 inlets; Threeway is connected with wastewater discharge pipe 14 in the middle of this pipeline; Watercooler 17 outlet pipes 22 1 ends are connected with watercooler 17 outlets, the other end and injection 26 suitable for reading connections of four-way, and threeway is connected with alkali header tank 21 water inlet pipes 18 in the middle of this pipeline, sprays four-way 26 end openings and is connected with water header tank 24 inlets; Breathing condensing surface 27 pneumatic outlets is connected with injection four-way 26 1 side entrances; Neutralizing well 12 respiratory gas pipelines 23 1 ends are connected with neutralizing well 12 pneumostomes, and the other end is connected with injection four-way 26 opposite sides inlet; Water header tank 24 is equipped with evacuated tube 25; Neutralizing well 12 is equipped with hydro-oxidation sodium solution pipe 11, clear water pipe 15; Alkali cleaning separator 8 alkaline water outlet pipes 10 1 ends are connected with alkali cleaning separator 8, and the other end is connected with thick chlorination flow container 2; Alkali header tank 21 is equipped with alkali inlet tube 19, evacuated tube 20.
Embodiment two
The washing alkali cleaning method of thick chlorated liquid in the benzene chloride production; Comprise that the thick chlorated liquid from chlorination reactor gets into thick chlorination flow container 2; This thick chlorated liquid and together sent into washing separator 5 by washing pump 4 from the water of water header tank 24; The thick chlorated liquid that comes out from washing separator 5 tops and together delivered to alkali cleaning splitter 8 by alkali cleaning pump 7 from the sodium hydroxide solution of alkali header tank 21, what came out in alkali cleaning separator 8 tops is chlorated liquid, this chlorated liquid goes postprocessing working procedures; The sour water that comes out in washing splitter 5 bottoms gets into neutralizing well 12; The sodium hydroxide solution that neutralizing well 12 adds from alkali header tank 21; Delivered to watercooler 17 from the water that neutralizing well 12 comes out by water pump 13; Deliver to through watercooler 17 outlet pipes 22 again and spray four-way 26 and alkali header tank 21, spray the water entering water header tank 24 that four-way 26 comes out; The alkaline water that comes out from alkali cleaning splitter 8 bottoms gets into thick chlorination flow container 2.Its technical essential comprises:
1. control pH value=7 of neutralizing well water; 2. controlling neutralizing well water sodium chloride-containing concentration is 20% (wt); 3. controlling watercooler outlet water temp is 25 ℃.4. the concentration of sodium hydroxide solution that adds neutralizing well is 10% (wt); 5. defective if record neutralizing well water, then drain into out-of-bounds, and add clear water.
Embodiment three
Embodiment three and embodiment two are basic identical, and difference is that neutralizing well water sodium chloride-containing concentration is 18% (wt), and watercooler outlet water temp is 22 ℃.
Embodiment four
Embodiment four and embodiment two are basic identical, and difference is that neutralizing well water sodium chloride-containing concentration is 15% (wt), and watercooler outlet water temp is 20 ℃.
Embodiment five
Embodiment five and embodiment two are basic identical, and difference is that neutralizing well water sodium chloride-containing concentration is 10% (wt), and watercooler outlet water temp is 15 ℃.
Claims (6)
1. thick chlorated liquid is washed alkaline cleaner in the benzene chloride production; Comprise thick chlorination flow container (2), breathe condensing surface (27), wash pump (4), wash separator (5), alkali cleaning pump (7), alkali cleaning separator (8), alkali header tank (21), neutralizing well (12), water pump (13), watercooler (17), injection four-way (26), water header tank (24); Thick chlorination flow container (2) is equipped with thick chlorated liquid inlet tube (1); Thick chlorination flow container (2) is equipped with breathes condensing surface (27); Thick chlorated liquid output tube (3) one ends are connected with thick chlorination flow container (2); The other end is connected with washing pump (4) inlet; Threeway is connected with water header tank (24) outlet in the middle of this pipeline, and washing pump (4) outlet is connected with washing separator (5) inlet, and thick chlorated liquid outlet pipe (6) one ends of washing separator (5) are connected with washing separator (5); The other end is connected with alkali cleaning pump (7) inlet; Threeway is connected with alkali header tank (21) outlet in the middle of this pipeline, and alkali cleaning pump (7) outlet is connected with alkali cleaning separator (8) inlet, and alkali cleaning separator (8) is equipped with chlorated liquid outlet pipe (9); It is characterized in that washing the outlet of separator (5) sour water and be connected with neutralizing well (12) inlet, neutralizing well (12) outlet is connected with water pump (13) inlet, and water pump (13) outlet pipe (16) one ends are connected with water pump (13) outlet, and the other end is connected with watercooler (17) inlet; Threeway is connected with wastewater discharge pipe (14) in the middle of this pipeline; Watercooler (17) outlet pipe (22) one ends are connected with watercooler (17) outlet; The other end and injection suitable for reading connection of four-way (26); Threeway is connected with alkali header tank (21) water inlet pipe (18) in the middle of this pipeline, sprays four-way (26) end opening and is connected with water header tank (24) inlet; Breathing condensing surface (27) pneumatic outlet is connected with injection four-way (26) one side entrances; Neutralizing well (12) respiratory gas pipeline (23) one ends are connected with neutralizing well (12) pneumostome, and the other end is connected with injection four-way (26) opposite side inlet; Water header tank (24) is equipped with and arranges pipe (25); Neutralizing well (12) is equipped with hydro-oxidation sodium solution pipe (11), clear water pipe (15); Alkali cleaning separator (8) alkaline water outlet pipe (10) one ends are connected with alkali cleaning separator (8), and the other end is connected with thick chlorination flow container (2), and alkali header tank (21) is equipped with alkali inlet tube (19), evacuated tube (20).
2. the washing alkali cleaning method of thick chlorated liquid in the benzene chloride production; Comprise that the thick chlorated liquid from chlorination reactor gets into thick chlorination flow container (2); This thick chlorated liquid and together sent into washing separator (5) by washing pump (4) from the water of water header tank (24); The thick chlorated liquid that comes out from washing separator (5) top and together delivered to alkali cleaning splitter (8) by alkali cleaning pump (7) from the sodium hydroxide solution of alkali header tank (21); What came out in alkali cleaning separator (8) top is chlorated liquid, and this chlorated liquid goes postprocessing working procedures; The sour water that comes out in washing splitter (5) bottom gets into neutralizing well (12); Neutralizing well (12) adds the sodium hydroxide solution from alkali header tank (21); Delivered to watercooler (17) from the water that neutralizing well (12) comes out by water pump (13); Deliver to through watercooler (17) outlet pipe (22) again and spray four-way (26) and alkali header tank (21), spray the water entering water header tank (24) that four-way (26) comes out; The alkaline water that comes out from alkali cleaning splitter (8) bottom gets into thick chlorination flow container (2), it is characterized in that:
PH value=7 of A, control neutralizing well water;
B, control neutralizing well water sodium chloride-containing concentration＜25% (wt);
C, control watercooler outlet water temp＜30 ℃;
The concentration of sodium hydroxide solution of D, adding neutralizing well is 10% (wt);
E, defective if record neutralizing well water then drains into out-of-bounds, and adds clear water.
3. according to thick chlorated liquid washing alkali cleaning method in the said benzene chloride production of claim 2, it is characterized in that controlling neutralizing well water sodium chloride-containing concentration is 20% (wt), and control watercooler outlet water temp is 25 ℃.
4. according to thick chlorated liquid washing alkali cleaning method in the said benzene chloride production of claim 2, it is characterized in that controlling neutralizing well water sodium chloride-containing concentration is 18% (wt), and control watercooler outlet water temp is 22 ℃.
5. according to thick chlorated liquid washing alkali cleaning method in the said benzene chloride production of claim 2, it is characterized in that controlling neutralizing well water sodium chloride-containing concentration is 15% (wt), and control watercooler outlet water temp is 20 ℃.
6. according to thick chlorated liquid washing alkali cleaning method in the said benzene chloride production of claim 2, it is characterized in that controlling neutralizing well water sodium chloride-containing concentration is 10% (wt), and control watercooler outlet water temp is 15 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210021343.7A CN102584523B (en) | 2012-01-31 | 2012-01-31 | Semifinished chlorinated solution water washing and alkali washing device used during chlorobenzene production and water washing and alkali washing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210021343.7A CN102584523B (en) | 2012-01-31 | 2012-01-31 | Semifinished chlorinated solution water washing and alkali washing device used during chlorobenzene production and water washing and alkali washing method |
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| CN102584523A true CN102584523A (en) | 2012-07-18 |
| CN102584523B CN102584523B (en) | 2014-03-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399624A (en) * | 2015-06-30 | 2016-03-16 | 江西师范大学 | Method for preparing acetic ester by adopting acid-resistant molecular sieve membrane reactor |
| CN106186435A (en) * | 2016-08-24 | 2016-12-07 | 浙江闰土新材料有限公司 | A kind of Benzene Chloride waste liquid and the integrated treatment of waste residue and reuse method |
| CN109651067A (en) * | 2018-12-29 | 2019-04-19 | 南通东港化工有限公司 | A kind of preparation process of 1,1,2- trichloroethanes |
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| JPS61161137A (en) * | 1985-01-07 | 1986-07-21 | Mitsuo Sohgoh Kenkyusho Kk | Treatment of substance |
| CN102140055A (en) * | 2010-12-29 | 2011-08-03 | 安徽八一化工股份有限公司 | Purification method of chloridized liquid |
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- 2012-01-31 CN CN201210021343.7A patent/CN102584523B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61161137A (en) * | 1985-01-07 | 1986-07-21 | Mitsuo Sohgoh Kenkyusho Kk | Treatment of substance |
| CN102140055A (en) * | 2010-12-29 | 2011-08-03 | 安徽八一化工股份有限公司 | Purification method of chloridized liquid |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399624A (en) * | 2015-06-30 | 2016-03-16 | 江西师范大学 | Method for preparing acetic ester by adopting acid-resistant molecular sieve membrane reactor |
| CN105399624B (en) * | 2015-06-30 | 2019-01-08 | 江西师范大学 | A method of acetates are prepared using acid resistance molecular film reactor |
| CN106186435A (en) * | 2016-08-24 | 2016-12-07 | 浙江闰土新材料有限公司 | A kind of Benzene Chloride waste liquid and the integrated treatment of waste residue and reuse method |
| CN106186435B (en) * | 2016-08-24 | 2019-01-11 | 浙江闰土新材料有限公司 | Integrated treatment and the reuse method of a kind of Benzene Chloride waste liquid and waste residue |
| CN109651067A (en) * | 2018-12-29 | 2019-04-19 | 南通东港化工有限公司 | A kind of preparation process of 1,1,2- trichloroethanes |
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