CN102584523B - 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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- CN102584523B CN102584523B CN201210021343.7A CN201210021343A CN102584523B CN 102584523 B CN102584523 B CN 102584523B CN 201210021343 A CN201210021343 A CN 201210021343A CN 102584523 B CN102584523 B CN 102584523B
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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 wash alkaline cleaner and washing alkali washing method in a kind of Chemicals production, what be specifically related to is thick chlorated liquid washing alkaline cleaner and washing alkali washing method in benzene chloride production.
(2) background technology
In benzene chloride production process, benzene reacts in chlorination reactor with chlorine and generates the thick chlorated liquid of chloride containing benzene and the chlorinated exhaust of containing hydrogen chloride.Thick chlorated liquid, through washing, alkali cleaning, sedimentation, simple distillation, makes thick Benzene Chloride, 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 graphite condenser condensation process, and input spray absorber sponges wherein contained benzene, and the pure hydrogenchloride obtaining after spray-absorption goes to produce by-product hydrochloric acid operation.Why will wash alkali cleaning to thick chlorated liquid, be because do not remove iron trichloride contained in thick chlorated liquid and hydrogenchloride, not only can cause quality product defective, but also may cause the corrosion of the equipment such as distillation tower and pipeline.
In former thick chlorated liquid washing alkali washing process, washing clear water, Alkali liquid compounding clear water.This technical maturity, but the norm quota of consumption is higher, and clear water consumption is large, and because wastewater treatment capacity is large, has increased the weight of environmental.
(3) summary of the invention
The object of this invention is to provide that a kind of production efficiency is high, cost is low, and be conducive to alleviate thick chlorated liquid washing alkaline cleaner in the benzene chloride production process of environmental pollution.
Another object of the present invention is to provide thick chlorated liquid washing alkali washing method in a kind of new benzene chloride production.
The technical solution used in the present invention is:
In benzene chloride production, thick chlorated liquid washing alkaline cleaner, comprises thick chlorination flow container, breathes condenser, washes pump, washes separator, alkali cleaning pump, alkali cleaning separator, alkali header tank, neutralizing well, water pump, watercooler, injection four-way, water header tank; Thick chlorination flow container is provided with thick chlorated liquid inlet tube; Thick chlorination flow container is provided with breathing condenser; Thick chlorated liquid output tube one end is connected with thick chlorination flow container, and the other end is connected with washing pump intake, and in the middle of this pipeline, threeway is connected with the outlet of water header tank, and washing pump discharge is connected with washing separator inlet; Thick chlorated liquid outlet pipe one end of washing separator is connected with washing separator, the other end is connected with alkali cleaning pump intake, in the middle of this pipeline, threeway is connected with the outlet of alkali header tank, and alkali cleaning pump discharge is connected with alkali cleaning separator inlet, and alkali cleaning separator is provided with chlorated liquid outlet pipe; The outlet of washing separator sour water is connected with neutralizing well entrance, and 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 watercooler entrance, and in the middle of this pipeline, threeway is connected with wastewater discharge pipe; 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, this pipeline centre threeway is connected with alkali header tank water inlet pipe, injection four-way end opening is connected with water header tank entrance; Breathing condenser pneumatic outlet is connected with injection four-way one side entrance; Neutralizing well respiratory gas pipeline one end is connected with neutralizing well pneumostome, and the other end is connected with injection four-way opposite side entrance; Water header tank is provided with evacuated tube; Neutralizing well is provided with hydro-oxidation sodium solution pipe, clear water pipe; Alkali cleaning separator alkaline water outlet pipe one end is connected with alkali cleaning separator, and the other end is connected with thick chlorination flow container; Alkali header tank is provided with alkali inlet tube, evacuated tube.When the thick chlorated liquid from chlorination reactor enters thick chlorination flow container, this thick chlorated liquid and be together pumped into washing separator by washing from the water of water header tank, from thick chlorated liquid out of washing separator top with from the sodium hydroxide solution of alkali header tank, together by alkali cleaning, be pumped into alkali cleaning splitter, alkali cleaning separator top out be chlorated liquid, this chlorated liquid goes postprocessing working procedures; Washing splitter bottom sour water out enters neutralizing well, neutralizing well adds the sodium hydroxide solution from alkali header tank, from neutralizing well water out, by water pump, delivered to watercooler, through watercooler outlet pipe, deliver to and spray four-way and alkali header tank again, spray four-way water out and enter water header tank; From alkali cleaning splitter bottom alkaline water out, enter thick chlorination flow container.
In benzene chloride production, the technical essential of thick chlorated liquid washing alkali cleaning comprises:
1. control pH value=7 of neutralizing well water; 2. control neutralizing well water sodium chloride-containing concentration < 25% (wt); 3. control 30 ℃ of watercooler outlet water temp <; 4. the concentration of sodium hydroxide solution that adds neutralizing well is 10% (wt); If it is defective 5. to record neutralizing well water, drains 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) accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram of a kind of embodiment of the present invention
(5) specific embodiment
Embodiment mono-
Thick chlorated liquid washing alkaline cleaner in benzene chloride production, comprise thick chlorination flow container 2, breathe condenser 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 provided with thick chlorated liquid inlet tube 1; Thick chlorination flow container 2 is provided with breathes condenser 27; Thick chlorated liquid output tube 3 one end are connected with thick chlorination flow container 2, the other end is connected with washing pump 4 entrances, in the middle of this pipeline, threeway is connected with 24 outlets of water header tank, 4 outlets of washing pump are connected with washing separator 5 entrances, thick chlorated liquid outlet pipe 6 one end of washing separator 5 are connected with washing separator 5, the other end is connected with alkali cleaning pump 7 entrances, in the middle of this pipeline, threeway is connected with 21 outlets of alkali header tank, 7 outlets of alkali cleaning pump are connected with alkali cleaning separator 8 entrances, and alkali cleaning separator 8 is provided with chlorated liquid outlet pipe 9; The 5 sour water outlets of washing separator are connected with neutralizing well 12 entrances, and neutralizing well 12 outlets are connected with water pump 13 entrances, and water pump 13 outlet pipe 16 one end are connected with water pump 13 outlets, and the other end is connected with watercooler 17 entrances; In the middle of this pipeline, threeway is connected with wastewater discharge pipe 14; 17 outlets of watercooler 17 outlet pipe 22 one end and watercooler are connected, the other end with spray that four-way 26 is suitable for reading to be connected, this pipeline centre threeway is connected with alkali header tank 21 water inlet pipes 18, injection four-way 26 end openings are connected with water header tank 24 entrances; Breathing condenser 27 pneumatic outlets is connected with injection four-way 26 1 side entrances; Neutralizing well 12 respiratory gas pipeline 23 one end are connected with neutralizing well 12 pneumostomes, and the other end is connected with injection four-way 26 opposite side entrances; Water header tank 24 is provided with evacuated tube 25; Neutralizing well 12 is provided with hydro-oxidation sodium solution pipe 11, clear water pipe 15; Alkali cleaning separator 8 alkaline water outlet pipe 10 one end are connected with alkali cleaning separator 8, and the other end is connected with thick chlorination flow container 2; Alkali header tank 21 is provided with alkali inlet tube 19, evacuated tube 20.
Embodiment bis-
The washing alkali washing method of thick chlorated liquid in benzene chloride production, comprise that the thick chlorated liquid from chlorination reactor enters 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, from thick chlorated liquid out of washing separator 5 tops with together delivered to alkali cleaning splitter 8 by alkali cleaning pump 7 from the sodium hydroxide solution of alkali header tank 21, alkali cleaning separator 8 tops out be chlorated liquid, this chlorated liquid goes postprocessing working procedures; Washing splitter 5 bottoms sour water out enters neutralizing well 12, neutralizing well 12 adds the sodium hydroxide solution from alkali header tank 21, from neutralizing well 12 water out, by water pump 13, delivered to watercooler 17, through watercooler 17 outlet pipes 22, deliver to and spray four-way 26 and alkali header tank 21 again, spray four-way 26 water out and enter water header tank 24; From alkali cleaning splitter 8 bottoms alkaline water out, enter 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); If it is defective 5. to record neutralizing well water, drains into out-of-bounds, and add clear water.
Embodiment tri-
Embodiment tri-and embodiment bis-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 tetra-
Embodiment tetra-and embodiment bis-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 bis-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. in benzene chloride production, thick chlorated liquid is washed alkaline cleaner, comprise thick chlorination flow container (2), breathe condenser (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 provided with thick chlorated liquid inlet tube (1); Thick chlorination flow container (2) is provided with breathes condenser (27); thick chlorated liquid output tube (3) one end is connected with thick chlorination flow container (2), the other end is connected with washing pump (4) entrance, in the middle of this pipeline, threeway is connected with water header tank (24) outlet, washing pump (4) outlet is connected with washing separator (5) entrance, thick chlorated liquid outlet pipe (6) one end of washing separator (5) is connected with washing separator (5), the other end is connected with alkali cleaning pump (7) entrance, in the middle of this pipeline, threeway is connected with alkali header tank (21) outlet, alkali cleaning pump (7) outlet is connected with alkali cleaning separator (8) entrance, alkali cleaning separator (8) is provided with chlorated liquid outlet pipe (9), it is characterized in that washing the outlet of separator (5) sour water is connected with neutralizing well (12) entrance, neutralizing well (12) outlet is connected with water pump (13) entrance, water pump (13) outlet pipe (16) one end is connected with water pump (13) outlet, and the other end is connected with watercooler (17) entrance, in the middle of this pipeline, threeway is connected with wastewater discharge pipe (14), watercooler (17) outlet pipe (22) one end is connected with watercooler (17) outlet, the other end and injection suitable for reading connection of four-way (26), in the middle of this pipeline, threeway is connected with alkali header tank (21) water inlet pipe (18), sprays four-way (26) end opening and is connected with water header tank (24) entrance, breathing condenser (27) pneumatic outlet is connected with injection four-way (26) one side entrances, neutralizing well (12) respiratory gas pipeline (23) one end is connected with neutralizing well (12) pneumostome, and the other end is connected with injection four-way (26) opposite side entrance, water header tank (24) is provided with and arranges pipe (25), neutralizing well (12) is provided with hydro-oxidation sodium solution pipe (11), clear water pipe (15), alkali cleaning separator (8) alkaline water outlet pipe (10) one end is connected with alkali cleaning separator (8), and the other end is connected with thick chlorination flow container (2), and alkali header tank (21) is provided with alkali inlet tube (19), evacuated tube (20).
2. the washing alkali washing method of thick chlorated liquid in benzene chloride production, comprise that the thick chlorated liquid from chlorination reactor enters 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), from thick chlorated liquid out of washing separator (5) top with together delivered to alkali cleaning separator (8) by alkali cleaning pump (7) from the sodium hydroxide solution of alkali header tank (21), alkali cleaning separator (8) top out be chlorated liquid, this chlorated liquid goes postprocessing working procedures; Washing separator (5) bottom sour water out enters neutralizing well (12), neutralizing well (12) adds the sodium hydroxide solution from alkali header tank (21), from neutralizing well (12) water out, by water pump (13), delivered to watercooler (17), through watercooler (17) outlet pipe (22), deliver to and spray four-way (26) and alkali header tank (21) again, spray four-way (26) water out and enter water header tank (24); From alkali cleaning separator (8) bottom alkaline water out, enter 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);
30 ℃ of C, control watercooler outlet water temp <;
D, to add the concentration of sodium hydroxide solution of neutralizing well be 10% (wt);
If E records neutralizing well, water is defective, drains into out-of-bounds, and adds clear water.
3. thick chlorated liquid washing alkali washing method in benzene chloride production according to claim 2, it is characterized in that controlling neutralizing well water sodium chloride-containing concentration is 20% (wt), controlling watercooler outlet water temp is 25 ℃.
4. thick chlorated liquid washing alkali washing method in benzene chloride production according to claim 2, it is characterized in that controlling neutralizing well water sodium chloride-containing concentration is 18% (wt), controlling watercooler outlet water temp is 22 ℃.
5. thick chlorated liquid washing alkali washing method in benzene chloride production according to claim 2, it is characterized in that controlling neutralizing well water sodium chloride-containing concentration is 15% (wt), controlling watercooler outlet water temp is 20 ℃.
6. thick chlorated liquid washing alkali washing method in benzene chloride production according to claim 2, it is characterized in that controlling neutralizing well water sodium chloride-containing concentration is 10% (wt), controlling watercooler outlet water temp is 15 ℃.
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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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| 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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| CN102584523B true CN102584523B (en) | 2014-03-26 |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| 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 |
Non-Patent Citations (5)
| Title |
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| 杨瑞良.酸苯自动分离装置.《氯碱工业》.2001,(第3期),第30-31页. |
| 汤建伟等.氯苯的生产工艺和设备.《化工和制药工程认识实习教程》.郑州大学出版社,2007,第110-113页. * |
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