CN109096042A - A kind of novel production process of Benzene Chloride - Google Patents
A kind of novel production process of Benzene Chloride Download PDFInfo
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- CN109096042A CN109096042A CN201811058672.2A CN201811058672A CN109096042A CN 109096042 A CN109096042 A CN 109096042A CN 201811058672 A CN201811058672 A CN 201811058672A CN 109096042 A CN109096042 A CN 109096042A
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
- C07C17/12—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms in the ring of aromatic compounds
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Abstract
The present invention provides a kind of novel production process of Benzene Chloride.Benzene Chloride of the present invention includes following raw material: anhydrous benzene, chlorine, catalyst, targeting agent, and novel production process includes: preparation anhydrous benzene；Anhydrous benzene is flowed out from benzene high position trench bottom and is continuously added in chlorinator from the bottom of chlorinator after flowmeter measures；Qualified chlorine after liquid chlorine vaporization is buffered by Chlorine Buffer Vessel, then from chlorinator bottom be passed through with anhydrous benzene fair current in the same direction and on, under the action of catalyst in chlorinator, targeting agent, reaction generates chlorated liquid, the post-treated obtained Benzene Chloride of chlorated liquid.Novel production process of the present invention, a large amount of waste water can be led to the problem of by avoiding washing and alkali cleaning in conventional method, waste water will not be generated, and catalyst long service life, service life of equipment are long, detection cycle extends, products obtained therefrom of the present invention purity is high, using iron catalyst catalyst, chelate EDTA-Fe using centered on iron is as targeting agent, waste water output capacity is low, green and pollution-free.
Description
Technical field
The present invention relates to pesticide synthesis technical fields, and in particular to a kind of novel production process of Benzene Chloride.
Background technique
Benzene Chloride is also chlorobenzene, is colorless and transparent volatile liquid, there is semen armeniacae amarae taste.- 45.6 DEG C of fusing point, boiling point
131.6 DEG C, relative density 1.107 (20/4 DEG C), index of refraction 1.5248 is 23 DEG C of flash-point, 637.78 DEG C of self-ignition point, inflammable.In sky
Explosion limit is 1.83-9.23% (volume) in gas.It is not soluble in water, it is soluble in alcohol, ether, benzene and chloroform etc..It is toxic, in toxicity
Deng.
Benzene Chloride is a kind of important basic organic synthesis raw material, is used as dyestuff, medicine, pesticide, organic synthesis intermediate.
For manufacturing phenol, nitro-chlorobenzene, dinitrofluorobenzene, aniline, nitrophenols and insecticide DDT etc., ethyl cellulose is also served as
With the solvent of many resins.During traditional mode of production Benzene Chloride, using benzene and chlorine under catalyst iron hoop catalyst action in
Hybrid reaction is produced in chlorination reactor, and the ratio that catalyst accounts for total material is smaller, large percentage shared by opposite benzene and chlorine,
Its synthetic ratio is lower, production capacity is not high, contains a small amount of hydrochloric acid after chlorination reaction in acid chlorization liquid, at present acid chlorine after chlorination reaction
Change liquid mainly to remove using washing and alkali washing process, then refining spearation obtains Benzene Chloride finished product.Wherein, washing and alkali cleaning can produce
Raw a large amount of waste water, will affect product quality, cause to corrode to equipment installation, it is more difficult to and it handles, not only increases production cost, and
It may pollute the environment, improve environmental improvement cost.
Therefore, in order to solve these problems, ensure that production run is stable, improve product yield, reduce production cost and behaviour
Make expense, the novel production process for developing a kind of Benzene Chloride is particularly important.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of novel production process of Benzene Chloride.
In order to achieve the above object, technical solution of the present invention is achieved by the following technical programs:
A kind of novel production process of Benzene Chloride, the Benzene Chloride include following raw material: anhydrous benzene, catalyst, is determined chlorine
Position agent, wherein anhydrous benzene, the molar ratio of chlorine are 1.8-2.5:0.7-1.3, and catalyst accounts for anhydrous benzene and chlorine total weight
0.9-1.3%, targeting agent account for the 0.08-0.15% of anhydrous benzene and chlorine total weight, novel production process the following steps are included:
S1, anhydrous processing is carried out to industrial purified petroleum benzin using azeotropic drying method, obtains anhydrous benzene, it is spare；
S2, anhydrous benzene are flowed out from benzene high position trench bottom is continuously added chlorinator from the bottom of chlorinator after flowmeter measures
In；
S3, the qualified chlorine after liquid chlorine vaporization is buffered by Chlorine Buffer Vessel, then adjusts pressure through chlorine distribution platform
Be passed through with flow from chlorinator bottom, with anhydrous benzene fair current in the same direction that step S2 is added and on, it is catalyst in chlorinator, fixed
Under the action of the agent of position, reaction temperature and stirring rate inside chlorinator are set, turn on agitator is generated after being reacted and obtained
Chlorated liquid containing Benzene Chloride, the post-treated obtained Benzene Chloride of chlorated liquid, the hydrogen chloride gas containing benzene that reaction is generated is through chlorination
It is reprocessed after discharge at the top of device.
Further, the catalyst is iron catalyst catalyst.
Further, the targeting agent is selected from the chelate EDTA-Fe centered on iron.
Further, the Benzene Chloride includes following raw material: anhydrous benzene, chlorine, catalyst, targeting agent, wherein anhydrous
Benzene, chlorine molar ratio be 2.1:1, catalyst accounts for the 1% of anhydrous benzene and chlorine total weight, and targeting agent accounts for anhydrous benzene and chlorine is total
The 0.1% of weight.
Further, hydrogen chloride gas containing benzene described in step S1 is after discharge at the top of chlorinator through one section of condenser, two sections
Acidic liquid is passed through sour benzene separator by the acidic liquid that condenser is condensed out, through sour benzene separator point
It separates out the sour benzene come and returns to chlorinator, and the spent acid of sour benzene separator bottom discharge, spent acid are passed through catch tank collection.
Further, the post-processing of chlorated liquid described in step S1 includes: from chlorinator upper part discharge port by chlorated liquid through gas-liquid
Separator processing, liquid enter stripper raw material tank, obtain Benzene Chloride；Gas enters tail gas absorber, the tail gas after absorbing
Go by-product hydrochloric acid process.
Further, the chlorated liquid post-processing further include: the substandard products Benzene Chloride in tail gas absorption tower reactor is through cyclic absorption
Enter circulating absorption solution from the top of tail gas absorber lower section feeding port after liquid cooler cooling processing, in cyclic absorption tail gas
Benzene；Circulating absorption solution absorbs the benzene in tail gas from top to bottom.
Further, temperature < -15 DEG C of the circulating absorption solution cooler.
Further, the reaction temperature inside the step S3 setting chlorinator is 75-85 DEG C, stirring rate 2200-
2500r/min
The present invention provides a kind of novel production process of Benzene Chloride, and advantage is compared with prior art:
The novel production process of Benzene Chloride of the present invention, a large amount of waste water can be generated by avoiding washing and alkali cleaning in conventional method
Problem, production method of the present invention will not generate waste water, and the service life is longer for catalyst, and service life of equipment extends, detection
Cycle stretch-out；Novel production process products obtained therefrom by-product of the present invention is few, and product is easy to purify, and product purity is high, and Benzene Chloride turns
It is high to change selectivity, chlorinator does not easily cause material is mixed to return, the chelate EDTA-Fe using iron catalyst catalyst, centered on iron
As targeting agent, not only waste water output capacity is low, in chlorated liquid dichloro benzene content reduce by 30%, and improve reaction rate and
Extent of reaction saves synthesis cost, improves economic benefit；
The novel production process mature and reliable of Benzene Chloride of the present invention, the toxic gas in emission greatly reduce, green
It is environment friendly and pollution-free.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
In embodiment, azeotropic drying method carries out the process of anhydrous processing to industrial purified petroleum benzin are as follows: comes from tank field benzene measuring tank
Benzene feedstock squeeze into benzene drying tower azeotropic dehydration through former benzene dry pump, dewatered benzene feedstock is produced from tower reactor, into dry benzene tank；
The recycling benzene in benzene tank will be recycled, recovered benzene is pumped into recycling benzene drying tower azeotropic dehydration, and dewatered benzene feedstock is from tower reactor
Extraction, into dry benzene tank；The benzene in dry benzene tank is finally pumped into benzene head tank through dry benzene to use for chlorination reaction.
Embodiment 1:
The present embodiment Benzene Chloride includes following raw material: anhydrous benzene, chlorine, catalyst, targeting agent, wherein anhydrous benzene, chlorine
Molar ratio be 1.8:0.7, catalyst accounts for the 0.9% of anhydrous benzene and chlorine total weight, and targeting agent accounts for anhydrous benzene and chlorine gross weight
Amount 0.08%, novel production process the following steps are included:
S1, anhydrous processing is carried out to industrial purified petroleum benzin using azeotropic drying method, obtains anhydrous benzene, it is spare；
S2, anhydrous benzene are flowed out from benzene high position trench bottom is continuously added chlorinator from the bottom of chlorinator after flowmeter measures
In；
S3, the qualified chlorine after liquid chlorine vaporization is buffered by Chlorine Buffer Vessel, then adjusts pressure through chlorine distribution platform
Be passed through with flow from chlorinator bottom, with anhydrous benzene fair current in the same direction that step S2 is added and on, it is catalyst in chlorinator, fixed
Position agent under the action of, be arranged chlorinator inside reaction temperature be 75 DEG C, stirring rate 2200r/min, turn on agitator into
It is generated after row reaction and obtains the chlorated liquid containing Benzene Chloride, the post-treated obtained Benzene Chloride of chlorated liquid contains benzene for what reaction generated
Hydrogen chloride gas is reprocessed after discharge at the top of chlorinator.
Wherein, catalyst is iron catalyst catalyst；Targeting agent is selected from the chelate EDTA-Fe centered on iron；Chlorine containing benzene
Change the Acidic Liquid that hydrogen is condensed out after discharge at the top of chlorinator through one section of condenser, two sections of condensers
Acidic liquid is passed through sour benzene separator by body, and the sour benzene separated through sour benzene separator returns to chlorinator, and sour benzene separator
The spent acid of bottom discharge, spent acid are passed through catch tank collection；
Chlorated liquid post-processing includes: to handle chlorated liquid through gas-liquid separator from chlorinator upper part discharge port, and liquid enters
Stripper raw material tank, obtains Benzene Chloride；Gas enters tail gas absorber, and the tail gas after absorbing goes by-product hydrochloric acid process；Chlorination
Liquid post-processing further include: substandard products Benzene Chloride in tail gas absorption tower reactor after circulating absorption solution cooler cools down -15 DEG C of processing from
The top of tail gas absorber lower section feeding port enters circulating absorption solution, the benzene in cyclic absorption tail gas；Circulating absorption solution from it is upper from
Benzene in lower absorption tail gas.
Embodiment 2:
The present embodiment Benzene Chloride includes following raw material: anhydrous benzene, chlorine, catalyst, targeting agent, wherein anhydrous benzene, chlorine
Molar ratio be 2.5:1.3, catalyst accounts for the 1.3% of anhydrous benzene and chlorine total weight, and targeting agent accounts for anhydrous benzene and chlorine gross weight
Amount 0.15%, novel production process the following steps are included:
S1, anhydrous processing is carried out to industrial purified petroleum benzin using azeotropic drying method, obtains anhydrous benzene, it is spare；
S2, anhydrous benzene are flowed out from benzene high position trench bottom is continuously added chlorinator from the bottom of chlorinator after flowmeter measures
In；
S3, the qualified chlorine after liquid chlorine vaporization is buffered by Chlorine Buffer Vessel, then adjusts pressure through chlorine distribution platform
Be passed through with flow from chlorinator bottom, with anhydrous benzene fair current in the same direction that step S2 is added and on, it is catalyst in chlorinator, fixed
Position agent under the action of, be arranged chlorinator inside reaction temperature be 85 DEG C, stirring rate 2500r/min, turn on agitator into
It is generated after row reaction and obtains the chlorated liquid containing Benzene Chloride, the post-treated obtained Benzene Chloride of chlorated liquid contains benzene for what reaction generated
Hydrogen chloride gas is reprocessed after discharge at the top of chlorinator.
Wherein, catalyst is iron catalyst catalyst；Targeting agent is selected from the chelate EDTA-Fe centered on iron；Chlorine containing benzene
Change the Acidic Liquid that hydrogen is condensed out after discharge at the top of chlorinator through one section of condenser, two sections of condensers
Acidic liquid is passed through sour benzene separator by body, and the sour benzene separated through sour benzene separator returns to chlorinator, and sour benzene separator
The spent acid of bottom discharge, spent acid are passed through catch tank collection；
Chlorated liquid post-processing includes: to handle chlorated liquid through gas-liquid separator from chlorinator upper part discharge port, and liquid enters
Stripper raw material tank, obtains Benzene Chloride；Gas enters tail gas absorber, and the tail gas after absorbing goes by-product hydrochloric acid process；Chlorination
Liquid post-processing further include: substandard products Benzene Chloride in tail gas absorption tower reactor after circulating absorption solution cooler cools down -18 DEG C of processing from
The top of tail gas absorber lower section feeding port enters circulating absorption solution, the benzene in cyclic absorption tail gas；Circulating absorption solution from it is upper from
Benzene in lower absorption tail gas.
Embodiment 3:
The present embodiment Benzene Chloride includes following raw material: anhydrous benzene, chlorine, catalyst, targeting agent, wherein anhydrous benzene, chlorine
Molar ratio be 2.1:1, catalyst accounts for the 1% of anhydrous benzene and chlorine total weight, and targeting agent accounts for anhydrous benzene and chlorine total weight
0.1%, novel production process the following steps are included:
S1, anhydrous processing is carried out to industrial purified petroleum benzin using azeotropic drying method, obtains anhydrous benzene, it is spare；
S2, anhydrous benzene are flowed out from benzene high position trench bottom is continuously added chlorinator from the bottom of chlorinator after flowmeter measures
In；
S3, the qualified chlorine after liquid chlorine vaporization is buffered by Chlorine Buffer Vessel, then adjusts pressure through chlorine distribution platform
Be passed through with flow from chlorinator bottom, with anhydrous benzene fair current in the same direction that step S2 is added and on, it is catalyst in chlorinator, fixed
Position agent under the action of, be arranged chlorinator inside reaction temperature be 80 DEG C, stirring rate 2350r/min, turn on agitator into
It is generated after row reaction and obtains the chlorated liquid containing Benzene Chloride, the post-treated obtained Benzene Chloride of chlorated liquid contains benzene for what reaction generated
Hydrogen chloride gas is reprocessed after discharge at the top of chlorinator.
Wherein, catalyst is iron catalyst catalyst；Targeting agent is selected from the chelate EDTA-Fe centered on iron；Chlorine containing benzene
Change the Acidic Liquid that hydrogen is condensed out after discharge at the top of chlorinator through one section of condenser, two sections of condensers
Acidic liquid is passed through sour benzene separator by body, and the sour benzene separated through sour benzene separator returns to chlorinator, and sour benzene separator
The spent acid of bottom discharge, spent acid are passed through catch tank collection；
Chlorated liquid post-processing includes: to handle chlorated liquid through gas-liquid separator from chlorinator upper part discharge port, and liquid enters
Stripper raw material tank, obtains Benzene Chloride；Gas enters tail gas absorber, and the tail gas after absorbing goes by-product hydrochloric acid process；Chlorination
Liquid post-processing further include: substandard products Benzene Chloride in tail gas absorption tower reactor after circulating absorption solution cooler cools down -20 DEG C of processing from
The top of tail gas absorber lower section feeding port enters circulating absorption solution, the benzene in cyclic absorption tail gas；Circulating absorption solution from it is upper from
Benzene in lower absorption tail gas.
Embodiment 4:
The present embodiment Benzene Chloride includes following raw material: anhydrous benzene, chlorine, catalyst, targeting agent, wherein anhydrous benzene, chlorine
Molar ratio be 2:0.9, catalyst accounts for the 1.1% of anhydrous benzene and chlorine total weight, and targeting agent accounts for anhydrous benzene and chlorine total weight
0.11%, novel production process the following steps are included:
S1, anhydrous processing is carried out to industrial purified petroleum benzin using azeotropic drying method, obtains anhydrous benzene, it is spare；
S2, anhydrous benzene are flowed out from benzene high position trench bottom is continuously added chlorinator from the bottom of chlorinator after flowmeter measures
In；
S3, the qualified chlorine after liquid chlorine vaporization is buffered by Chlorine Buffer Vessel, then adjusts pressure through chlorine distribution platform
Be passed through with flow from chlorinator bottom, with anhydrous benzene fair current in the same direction that step S2 is added and on, it is catalyst in chlorinator, fixed
Position agent under the action of, be arranged chlorinator inside reaction temperature be 78 DEG C, stirring rate 2300r/min, turn on agitator into
It is generated after row reaction and obtains the chlorated liquid containing Benzene Chloride, the post-treated obtained Benzene Chloride of chlorated liquid contains benzene for what reaction generated
Hydrogen chloride gas is reprocessed after discharge at the top of chlorinator.
Wherein, catalyst is iron catalyst catalyst；Targeting agent is selected from the chelate EDTA-Fe centered on iron；Chlorine containing benzene
Change the Acidic Liquid that hydrogen is condensed out after discharge at the top of chlorinator through one section of condenser, two sections of condensers
Acidic liquid is passed through sour benzene separator by body, and the sour benzene separated through sour benzene separator returns to chlorinator, and sour benzene separator
The spent acid of bottom discharge, spent acid are passed through catch tank collection；
Chlorated liquid post-processing includes: to handle chlorated liquid through gas-liquid separator from chlorinator upper part discharge port, and liquid enters
Stripper raw material tank, obtains Benzene Chloride；Gas enters tail gas absorber, and the tail gas after absorbing goes by-product hydrochloric acid process；Chlorination
Liquid post-processing further include: substandard products Benzene Chloride in tail gas absorption tower reactor after circulating absorption solution cooler cools down -22 DEG C of processing from
The top of tail gas absorber lower section feeding port enters circulating absorption solution, the benzene in cyclic absorption tail gas；Circulating absorption solution from it is upper from
Benzene in lower absorption tail gas.
Embodiment 5:
The present embodiment Benzene Chloride includes following raw material: anhydrous benzene, chlorine, catalyst, targeting agent, wherein anhydrous benzene, chlorine
Molar ratio be 2.1:1, catalyst accounts for the 1% of anhydrous benzene and chlorine total weight, and targeting agent accounts for anhydrous benzene and chlorine total weight
0.1%, novel production process the following steps are included:
S1, anhydrous processing is carried out to industrial purified petroleum benzin using azeotropic drying method, obtains anhydrous benzene, it is spare；
S2, anhydrous benzene are flowed out from benzene high position trench bottom is continuously added chlorinator from the bottom of chlorinator after flowmeter measures
In；
S3, the qualified chlorine after liquid chlorine vaporization is buffered by Chlorine Buffer Vessel, then adjusts pressure through chlorine distribution platform
Be passed through with flow from chlorinator bottom, with anhydrous benzene fair current in the same direction that step S2 is added and on, it is catalyst in chlorinator, fixed
Position agent under the action of, be arranged chlorinator inside reaction temperature be 82 DEG C, stirring rate 2400r/min, turn on agitator into
It is generated after row reaction and obtains the chlorated liquid containing Benzene Chloride, the post-treated obtained Benzene Chloride of chlorated liquid contains benzene for what reaction generated
Hydrogen chloride gas is reprocessed after discharge at the top of chlorinator.
Wherein, catalyst is iron catalyst catalyst；Targeting agent is selected from the chelate EDTA-Fe centered on iron；Chlorine containing benzene
Change the Acidic Liquid that hydrogen is condensed out after discharge at the top of chlorinator through one section of condenser, two sections of condensers
Acidic liquid is passed through sour benzene separator by body, and the sour benzene separated through sour benzene separator returns to chlorinator, and sour benzene separator
The spent acid of bottom discharge, spent acid are passed through catch tank collection；
Chlorated liquid post-processing includes: to handle chlorated liquid through gas-liquid separator from chlorinator upper part discharge port, and liquid enters
Stripper raw material tank, obtains Benzene Chloride；Gas enters tail gas absorber, and the tail gas after absorbing goes by-product hydrochloric acid process；Chlorination
Liquid post-processing further include: substandard products Benzene Chloride in tail gas absorption tower reactor after circulating absorption solution cooler cools down -17 DEG C of processing from
The top of tail gas absorber lower section feeding port enters circulating absorption solution, the benzene in cyclic absorption tail gas；Circulating absorption solution from it is upper from
Benzene in lower absorption tail gas.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
According to previous embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (9)
1. a kind of novel production process of Benzene Chloride, which is characterized in that the Benzene Chloride includes following raw material: anhydrous benzene, chlorine,
Catalyst, targeting agent, wherein anhydrous benzene, the molar ratio of chlorine are 1.8-2.5:0.7-1.3, and catalyst accounts for anhydrous benzene and chlorine
The 0.9-1.3% of total weight, targeting agent account for the 0.08-0.15% of anhydrous benzene and chlorine total weight, novel production process include with
Lower step:
S1, anhydrous processing is carried out to industrial purified petroleum benzin using azeotropic drying method, obtains anhydrous benzene, it is spare；
S2, anhydrous benzene are flowed out from benzene high position trench bottom to be continuously added in chlorinator from the bottom of chlorinator after flowmeter measures；
S3, the qualified chlorine after liquid chlorine vaporization is buffered by Chlorine Buffer Vessel, then adjusts pressure and stream through chlorine distribution platform
Amount be passed through from chlorinator bottom, with step S2 be added anhydrous benzene fair current in the same direction and on, catalyst, targeting agent in chlorinator
Under the action of, reaction temperature and stirring rate inside chlorinator are set, and turn on agitator generates after being reacted to be contained
The chlorated liquid of Benzene Chloride, the post-treated obtained Benzene Chloride of chlorated liquid, the hydrogen chloride gas containing benzene that reaction is generated is through chlorinator top
It is reprocessed after portion's discharge.
2. novel production process according to claim 1, which is characterized in that the catalyst is iron catalyst catalyst.
3. novel production process according to claim 1, which is characterized in that the targeting agent is selected from the chelating centered on iron
Object EDTA-Fe.
4. novel production process according to claim 1, which is characterized in that the Benzene Chloride includes following raw material: anhydrous benzene,
Chlorine, catalyst, targeting agent, wherein anhydrous benzene, the molar ratio of chlorine are 2.1:1, and catalyst accounts for anhydrous benzene and chlorine total weight
1%, targeting agent accounts for the 0.1% of anhydrous benzene and chlorine total weight.
5. novel production process according to claim 1, which is characterized in that hydrogen chloride gas containing benzene described in step S1 is through chlorination
The acidic liquid condensed out after discharge through one section of condenser, two sections of condensers at the top of device, by acidic liquid
It is passed through sour benzene separator, the sour benzene separated through sour benzene separator returns to chlorinator, and sour benzene separator bottom discharge is useless
Acid, spent acid are passed through catch tank collection.
6. novel production process according to claim 1, which is characterized in that chlorated liquid described in step S1 post-processing include: by
Chlorated liquid is handled from chlorinator upper part discharge port through gas-liquid separator, and liquid enters stripper raw material tank, obtains Benzene Chloride；Gas
Into tail gas absorber, the tail gas after absorbing goes by-product hydrochloric acid process.
7. production method according to claim 6, which is characterized in that the chlorated liquid post-processing further include: tail gas absorption
Substandard products Benzene Chloride in tower reactor after circulating absorption solution cooler cooling processing from the top of tail gas absorber lower section feeding port into
Enter circulating absorption solution, the benzene in cyclic absorption tail gas；Circulating absorption solution absorbs the benzene in tail gas from top to bottom.
8. production method according to claim 7, which is characterized in that temperature < -15 of the circulating absorption solution cooler
℃。
9. novel production process according to claim 1, which is characterized in that the reaction inside the step S3 setting chlorinator
Temperature is 75-85 DEG C, stirring rate 2200-2500r/min.
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Cited By (2)
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| CN110142010A (en) * | 2019-05-27 | 2019-08-20 | 河北鸿新源化工有限公司 | The production method and process units of more chlorine aromatic compounds are produced with aromatic compound chlorination reaction |
| CN114716298A (en) * | 2022-03-04 | 2022-07-08 | 安徽东至广信农化有限公司 | Environment-friendly benzene chloride production process |
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Application publication date: 20181228 |