CN113385121A - Benzyl chloride continuous chlorination production process and device - Google Patents
Benzyl chloride continuous chlorination production process and device Download PDFInfo
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- CN113385121A CN113385121A CN202110580771.2A CN202110580771A CN113385121A CN 113385121 A CN113385121 A CN 113385121A CN 202110580771 A CN202110580771 A CN 202110580771A CN 113385121 A CN113385121 A CN 113385121A
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
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- C—CHEMISTRY; METALLURGY
- 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
- C07C17/14—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms in the side-chain of aromatic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/005—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the outlet side being of particular interest
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/007—Aspects relating to the heat-exchange of the feed or outlet devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- B01J2219/00033—Continuous processes
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Abstract
The invention provides a benzyl chloride continuous chlorination production device, and relates to the technical field of continuous chlorination production processes. This benzyl chloride continuous chlorination apparatus for producing includes: the chlorination tower, the fixed intercommunication of air inlet of chlorination tower has chlorine trachea, and the top of chlorination tower has the edulcoration device that is arranged in going the waste gas impurity through the pipeline intercommunication. The invention also discloses a continuous chlorination production process of benzyl chloride, which comprises the following steps of S1: required chlorine is conveyed to the interior of the chlorination tower through a chlorine pipe; and S2, feeding tail gas generated after chlorination in the chlorination tower into an impurity removal device through a pipeline. The first air pump is used for separating chlorine gas from the chlorine gas stripping device by adding waste gas into the chlorine gas stripping device through the pipeline, the chlorine gas in the chlorine gas stripping device is sucked by the second air pump and then is added into the chlorine gas pipe, the chlorine gas is collected and recycled, the chlorine gas which does not completely react in the tail gas is recycled, the chlorine gas stripping device is environment-friendly, the chlorine gas can be added into the chlorination tower again for use, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of continuous chlorination production processes, in particular to a continuous chlorination production process and a continuous chlorination production device for benzyl chloride.
Background
Benzyl chloride is an organic matter, has a chemical formula of C7H7Cl, is colorless or yellowish transparent liquid, belongs to a carcinogenic substance, has an irritant smell, is slightly soluble in water, is easily soluble in organic solvents such as benzene and toluene, is an important chemical and medical intermediate, is an important organic intermediate, is colorless or light yellow transparent liquid as an industrial product, has an irritant smell, is highly corrosive, and can be dissolved in organic solvents such as ether, chloroform and chlorobenzene. Benzyl chloride is widely used in industry, mainly used in the fields of pesticides, medicines, spices, dye auxiliaries and synthesis auxiliaries, and is used for developing and producing benzaldehyde, butyl benzyl phthalate, aniline, phoxim, benzyl penicillin, benzyl alcohol, benzyl cyanide, phenylacetic acid and the like.
The chlorination reaction generally refers to a reaction in which chlorine is introduced into a compound. Among the organic chemical reactions, the chlorination reactions generally include displacement chlorination, addition chlorination, and oxidative chlorination; in the metallurgical industry, the refining of certain metals using chlorine or chlorides is also known as chlorination; the process of adding chlorine or chlorine oxide to water for oxidation and disinfection is also known as chlorination.
Benzyl chloride need carry out continuous chlorination when producing, and current continuous chlorination technology can carry out fine chlorination when carrying out the chlorination, but in the chlorination, very right chlorination tower can not utilize by one hundred% when the chlorine that uses, in the tail gas of emission, still can remain chlorine, when discharging, not only air pollution also leads to the waste of chlorine, in patent grant publication No. is: CN101250085B discloses a benzyl chloride continuous chlorination production process units, including the toluene jar, the toluene jar passes through the pipeline to be connected with chlorination tower upper portion, chlorination tower top passes through the pipeline to be connected with the water condenser, the water condenser is connected with the salt solution condenser respectively with the pipe connection, make in the reflux gets into the chlorination tower, the chlorination tower bottom is connected with first reation kettle through first riser, the chlorination tower bottom is connected with the second reation kettle through the second riser, first reation kettle bottom is connected with the second reation kettle bottom through thick benzyl flowing pipeline, the second reation kettle bottom is connected with thick benzyl intermediate tank through thick benzyl pipeline. The invention has the positive effects that: the method thoroughly changes the chlorination intermittent production process of benzyl chloride, greatly improves the production efficiency, can continuously produce the benzyl chloride, does not need to stop to clean materials, and improves the effective yield by about 25 percent; the content of benzyl chloride produced by the process can reach about 95 percent, but the chlorine in the tail gas can not be utilized when the process is used.
Disclosure of Invention
The invention aims to provide a benzyl chloride continuous chlorination production process and a benzyl chloride continuous chlorination production device, and solves the problems in the background art.
In order to achieve the purpose, the invention is realized by the following technical scheme: a benzyl chloride continuous chlorination apparatus for producing includes: the chlorination tower is characterized in that a chlorine pipe is fixedly communicated with the air inlet end of the chlorination tower, the top of the chlorination tower is communicated with an impurity removal device for removing impurities in waste gas through a pipeline, the output end of the impurity removal device is communicated with a cooling device for cooling the waste gas filtered by the impurity removal device through a pipeline, the water inlet end of the cooling device is communicated with a water pump for absorbing a water source through a pipeline, the input end of the water pump is fixedly connected with a three-way pipe, the output end of the cooling device is communicated with a liquefying device for liquefying vapor through a pipeline, the output end of the liquefying device is communicated with a separating device for gas-liquid separation through a pipeline, the air outlet end of the separating device is communicated with a first air pump for absorbing gas through a pipeline, and the output end of the first air pump is communicated with a chlorine stripping device for separating chlorine from other gases through a pipeline, the left output end of the chlorine stripping device is fixedly communicated with a tail gas treatment device, and the right output end of the chlorine stripping device is communicated with a second air pump for conveying chlorine through a pipeline.
Further, separator's play liquid end has the filter equipment who is used for filtering and purifying liquid through the pipeline intercommunication, filter equipment's output has collection device through the pipeline intercommunication, collection device's bottom sliding connection has the mobile device, the device groove has been seted up at mobile device's top, the inside fixed mounting in device groove has the telescopic link, one side fixed mounting that the device inslot wall was kept away from to the telescopic link has the grip block, the surface cover of telescopic link is equipped with the centre gripping spring, the both ends of centre gripping spring weld respectively in the inside in device groove and the grip block one side that is close to the telescopic link.
Furthermore, one end of the three-way pipe is connected with a water source, the other end of the three-way pipe is connected with the water pump, and the other end of the three-way pipe is connected with the water outlet end of the cooling device.
Further, the output end of the second air pump is fixedly communicated with the chlorine pipe.
A continuous chlorination production process of benzyl chloride comprises the following steps:
s1, conveying the required chlorine gas to the interior of the chlorination tower through the chlorine gas pipe;
s2, enabling tail gas generated after chlorination in the chlorination tower to enter the impurity removal device through a pipeline, carrying out particle filtration on the tail gas generated in the chlorination tower by the impurity removal device, and filtering impurities in particles in the impurity removal device to generate pure tail gas;
s3, enabling the tail gas after impurity filtration to enter the cooling device through a pipeline at the output end of the impurity removal device for cooling, enabling the water pump to absorb water from a water source through the three-way pipe, adding cold water into the cooling device, and enabling the water flowing out of the cooling device to enter the cooling device through the three-way pipe for water circulation;
s4, adding the waste gas cooled by the cooling device into a liquefying device, cooling the water vapor in the waste gas into liquid by the liquefying device, and feeding the liquid into the separating device through a pipeline;
s5, separating liquid and waste gas by the separation device, adding the waste gas from the separation device by the first air pump through a pipeline into the chlorine stripping device to separate chlorine, and introducing the liquid from the liquid conveying end of the separation device into the filtering device through a pipeline;
s6, absorbing chlorine in the chlorine stripping device by a second air pump, adding the chlorine into a chlorine pipe, and collecting and recycling the chlorine;
s7, filtering the liquid in the filtering device, and enabling the filtered liquid to enter the collecting device through a pipeline;
and S8, when the liquid in the collecting device is full, the liquid is conveyed to a centralized treatment pool through the moving device for centralized treatment.
S9, when the collecting device is replaced, the clamping block is moved and drives the telescopic rod to stretch, the clamping spring compresses, the collecting device is taken out, the new collecting device is replaced, the clamping block is loosened, and the clamping spring enables the clamping block to clamp the collecting device.
Further, in the operation S1, the chlorine gas pipe delivers chlorine gas to the chlorination tower at a speed of 5m3/S。
Further, in operation S6, the second air pump outputs air at a speed of 5m3/S。
Further, in operation S3, the output liquid speed of the water pump is 5m3/S。
The invention provides a benzyl chloride continuous chlorination production process and a benzyl chloride continuous chlorination production device. The method has the following beneficial effects:
1. the tail gas after impurity filtration enters a cooling device through a pipeline at the output end of an impurity removal device for cooling, a water pump absorbs water from a water source through a three-way pipe, cold water is added into the cooling device, the water flowing out of the cooling device enters the cooling device through the three-way pipe for water circulation, the waste gas cooled by the cooling device is added into a liquefying device, the liquefying device cools water vapor in the waste gas into liquid, the liquid and the waste gas enter a separating device through the pipeline, the first air pump adds the waste gas into a chlorine stripping device through the pipeline to separate chlorine, the chlorine in the chlorine stripping device is absorbed by a second air pump and then added into a chlorine pipe for collecting and recycling the chlorine, the chlorine which is not completely reacted in the tail gas is recycled, the device is not only environment-friendly, but also can add the chlorine into a chlorination tower again for use, and the cost is saved.
2. According to the invention, tail gas generated after chlorination in the chlorination tower enters the impurity removal device through the pipeline, the impurity removal device carries out particle filtration on the tail gas generated in the chlorination tower, impurities in particles are filtered in the impurity removal device, pure tail gas is generated, particles forming smoke can be removed, and the purity of extracted chlorine is ensured.
3. The water pump absorbs water from a water source through the three-way pipe, cold water is added into the cooling device, and water flowing out of the cooling device enters the cooling device through the three-way pipe for water circulation, so that water resources are saved.
4. The liquid enters the filtering device from the liquid conveying end of the separating device through the pipeline, the liquid is filtered in the filtering device, the filtered liquid enters the collecting device through the pipeline, and when the collecting device is full of liquid, the liquid is conveyed to the centralized treatment pool through the moving device for centralized treatment, so that the wastewater is collected and treated in a unified way, and the pollution to a water source is avoided.
5. When the collecting device is replaced, the clamping block is moved, the clamping block drives the telescopic rod to stretch, the clamping spring compresses, the collecting device is taken out, a new collecting device is replaced, the clamping block is loosened, the clamping spring enables the clamping block to clamp the collecting device, and the collecting device is convenient to replace.
Description of the drawings:
FIG. 1 is a block diagram of the apparatus of the present invention;
fig. 2 is a perspective view of a mobile device according to the present invention.
Illustration of the drawings:
1. a chlorination tower; 2. an impurity removal device; 3. a water pump; 4. a cooling device; 5. a three-way pipe; 6. a liquefaction plant; 7. a separation device; 8. a first air pump; 9. a filtration device; 10. a collection device; 11. a mobile device; 12. a chlorine stripping device; 13. a second air pump; 14. a gas treatment device; 15. a chlorine pipe; 16. a device slot; 17. a telescopic rod; 18. a clamping block; 19. the spring is clamped.
Detailed Description
As shown in fig. 1-2: a benzyl chloride continuous chlorination apparatus for producing includes: a chlorination tower 1, a chlorine pipe 15 is fixedly communicated with an air inlet end of the chlorination tower 1, the top of the chlorination tower 1 is communicated with an impurity removing device 2 used for removing impurities in waste gas through a pipeline, an output end of the impurity removing device 2 is communicated with a cooling device 4 used for cooling the waste gas filtered by the impurity removing device 2 through a pipeline, a water pump 3 used for absorbing water source is communicated with an air inlet end of the cooling device 4 through a pipeline, an input end of the water pump 3 is fixedly connected with a three-way pipe 5, one end of the three-way pipe 5 is connected with a water source, the other end of the three-way pipe 5 is connected with the water pump 3, the other end of the three-way pipe is connected with an water outlet end of the cooling device 4, an output end of the cooling device 4 is communicated with a liquefying device 6 used for liquefying vapor through a pipeline, an output end of the liquefying device 6 is communicated with a separating device 7 used for gas-liquid separation through a pipeline, an air outlet end of the separating device 7 is communicated with a first air pump 8 used for absorbing gas through a pipeline, the output end of the first air pump 8 is communicated with a chlorine stripping device 12 for separating chlorine from other gases through a pipeline, the left output end of the chlorine stripping device 12 is fixedly communicated with a tail gas treatment device 14, the right output end of the chlorine stripping device 12 is communicated with a second air pump 13 for conveying chlorine through a pipeline, the output end of the second air pump 13 is fixedly communicated with a chlorine pipe 15, the liquid outlet end of the separation device 7 is communicated with a filtering device 9 for filtering and purifying liquid through a pipeline, the output end of the filtering device 9 is communicated with a collecting device 10 through a pipeline, the bottom of the collecting device 10 is slidably connected with a moving device 11, the top of the moving device 11 is provided with a device groove 16, an expansion link 17 is fixedly installed inside the device groove 16, one side of the expansion link 17, which is far away from the inner wall of the device groove 16, is fixedly installed with a clamping block 18, and the outer surface of the expansion link 17 is sleeved with a clamping spring 19, the both ends of centre gripping spring 19 weld respectively in the inside of device groove 16 and the one side that grip block 18 is close to telescopic link 17, and telescopic link 17 is cup jointed by thick pipe and tubule and is formed, is similar to the rib, makes grip block 18 play spacing effect when removing.
A continuous chlorination production process of benzyl chloride comprises the following steps:
step one, required chlorine is conveyed to the interior of the chlorination tower 1 through a chlorine pipe 15, and the speed of conveying the chlorine to the chlorination tower 1 through the chlorine pipe 15 is 5m3/S。
And step two, tail gas generated after chlorination in the chlorination tower 1 enters the impurity removal device 2 through a pipeline, the tail gas generated in the chlorination tower 1 is subjected to particle filtration by the impurity removal device 2, and impurities in particles are filtered in the impurity removal device 2 to generate pure tail gas.
Step three, the tail gas after impurity filtering enters a cooling device 4 through a pipeline at the output end of an impurity removing device 2 to be cooled, a water pump 3 absorbs water from a water source through a three-way pipe 5, cold water is added into the cooling device 4, the water flowing out of the cooling device 4 enters the cooling device 4 through the three-way pipe 5 to be circulated, and the speed of the output liquid of the water pump 3 is 5m3/S。
And step four, the waste gas cooled by the cooling device 4 is added into a liquefying device 6, and the liquefying device 6 cools the water vapor in the waste gas into liquid which enters a separating device 7 through a pipeline.
And step five, the separating device 7 separates the liquid from the waste gas, the first air pump 8 feeds the waste gas from the separating device 7 into the chlorine stripping device 12 through a pipeline to separate the chlorine, and the liquid enters the filtering device 9 from the liquid conveying end of the separating device 7 through a pipeline.
Step six, the chlorine in the chlorine stripping device 12 is sucked by the second air pump 13, and then is added into the chlorine pipe 15 for chlorine collection and reuse, and the speed of the gas output by the second air pump 13 is 5m3/S。
And step seven, filtering the liquid in the filtering device 9, and feeding the filtered liquid into the collecting device 10 through a pipeline.
And step eight, when the liquid in the collecting device 10 is full, the liquid is conveyed to a centralized treatment pool through the moving device 11 for centralized treatment.
And step nine, when the collecting device 10 is replaced, the clamping block 18 is moved, the clamping block 18 drives the telescopic rod 17 to stretch, the clamping spring 19 compresses, the collecting device 10 is taken out, a new collecting device 10 is replaced, the clamping block 18 is loosened, and the clamping spring 19 enables the clamping block 18 to clamp the collecting device 10.
To sum up: the tail gas filtered by impurities enters a cooling device 4 through a pipeline at the output end of an impurity removal device 2 for cooling, a water pump 3 absorbs water from a water source through a three-way pipe 5, cold water is added into the cooling device 4, the water flowing out of the cooling device 4 enters the cooling device 4 through the three-way pipe 5 for water circulation, the waste gas cooled by the cooling device 4 is added into a liquefying device 6, the liquefying device 6 cools water vapor in the waste gas into liquid, the liquid enters a separating device 7 through the pipeline, the separating device 7 separates the liquid from the waste gas, a first air pump 8 adds the waste gas into a chlorine stripping device 12 from the separating device 7 through the pipeline to separate chlorine, the chlorine in the chlorine stripping device 12 is absorbed by a second air pump 13 and then added into a chlorine pipe 15 for collecting and recycling the chlorine, and the chlorine which is not completely reacted in the tail gas is recycled, the tail gas generated after chlorination in the chlorination tower 1 enters the impurity removing device 2 through a pipeline, the impurity removing device 2 filters the tail gas generated in the chlorination tower 1 into particles, the impurities in the particles are filtered in the impurity removing device 2 to generate pure tail gas, the particles forming smoke can be removed, the purity of extracted chlorine is ensured, the water pump 3 absorbs water from a water source through the three-way pipe 5, cold water is added into the cooling device 4, the water flowing out of the cooling device 4 enters the cooling device 4 through the three-way pipe 5 for water circulation, water resources are saved, the liquid enters the filtering device 9 from the liquid conveying end of the separating device 7 through the pipeline, the liquid is filtered in the filtering device 9, the filtered liquid enters the collecting device 10 through the pipeline, and when the collecting device 10 is full of liquid, transport the centralized processing pond through mobile device 11 in, carry out centralized processing, collect waste water, unified processing can not cause the pollution at water source, when changing collection device 10, removes grip block 18, and grip block 18 drives telescopic link 17 flexible, and grip spring 19 compresses, takes out collection device 10, changes new collection device 10, loosens grip block 18, and grip spring 19 makes grip block 18 press from both sides tight collection device 10, makes collection device 10 be convenient for change.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.
Claims (8)
1. The utility model provides a benzyl chloride continuous chlorination apparatus for producing which characterized in that includes: the device comprises a chlorination tower (1), wherein a chlorine pipe (15) is fixedly communicated with the air inlet end of the chlorination tower (1), the top of the chlorination tower (1) is communicated with an impurity removal device (2) used for removing impurities in waste gas through a pipeline, the output end of the impurity removal device (2) is communicated with a cooling device (4) used for cooling the waste gas after the impurity removal device (2) is filtered through a pipeline, the water inlet end of the cooling device (4) is communicated with a water pump (3) used for absorbing a water source through a pipeline, the input end of the water pump (3) is fixedly connected with a three-way pipe (5), the output end of the cooling device (4) is communicated with a liquefying device (6) used for liquefying water vapor through a pipeline, the output end of the liquefying device (6) is communicated with a separating device (7) used for gas-liquid separation through a pipeline, the air outlet end of the separating device (7) is communicated with a first air pump (8) used for absorbing air through a pipeline, the output end of the first air pump (8) is communicated with a chlorine stripping device (12) for separating chlorine from other gases through a pipeline, the left output end of the chlorine stripping device (12) is fixedly communicated with a tail gas treatment device (14), and the right output end of the chlorine stripping device (12) is communicated with a second air pump (13) for conveying chlorine through a pipeline.
2. The continuous chlorination production device of benzyl chloride according to claim 1, wherein: the liquid outlet end of the separating device (7) is communicated with a filtering device (9) used for filtering and purifying liquid through a pipeline, the output end of the filtering device (9) is communicated with a collecting device (10) through the pipeline, the bottom of the collecting device (10) is connected with a moving device (11) in a sliding mode, a device groove (16) is formed in the top of the moving device (11), an expansion rod (17) is fixedly installed inside the device groove (16), one side, far away from the inner wall of the device groove (16), of the expansion rod (17) is fixedly provided with a clamping block (18), the outer surface of the expansion rod (17) is sleeved with a clamping spring (19), and the two ends of the clamping spring (19) are respectively welded inside the device groove (16) and one side, close to the expansion rod (17), of the clamping block (18).
3. The continuous chlorination production device of benzyl chloride according to claim 1, wherein: one end of the three-way pipe (5) is connected to a water source, the other end of the three-way pipe is connected to the water pump (3), and the other end of the three-way pipe is connected to the water outlet end of the cooling device (4).
4. The continuous chlorination production device of benzyl chloride according to claim 1, wherein: the output end of the second air pump (13) is fixedly communicated with the chlorine pipe (15).
5. A benzyl chloride continuous chlorination production process, according to any one of claims 1-4, the benzyl chloride continuous chlorination production device, characterized in that: the method comprises the following steps:
s1, conveying the required chlorine gas to the interior of the chlorination tower (1) through the chlorine gas pipe (15);
s2, enabling tail gas generated after chlorination in the chlorination tower (1) to enter the impurity removal device (2) through a pipeline, carrying out particle filtration on the tail gas generated in the chlorination tower (1) by the impurity removal device (2), and filtering impurities in particles in the impurity removal device (2) to generate pure tail gas;
s3, enabling the tail gas after impurity filtration to enter the cooling device (4) through a pipeline at the output end of the impurity removal device (2) for cooling, enabling the water pump (3) to absorb water from a water source through the three-way pipe (5), adding cold water into the cooling device (4), and enabling the water flowing out of the cooling device (4) to enter the cooling device (4) through the three-way pipe (5) for water circulation;
s4, adding the waste cooled by the cooling device (4) into a liquefying device (6), cooling the water vapor in the waste gas into liquid by the liquefying device (6), and feeding the liquid into the separating device (7) through a pipeline;
s5, the separation device (7) separates liquid from the waste gas, the first air pump (8) feeds the waste gas from the separation device (7) into the chlorine stripping device (12) through a pipeline to separate chlorine, and the liquid enters the filtering device (9) from the liquid conveying end of the separation device (7) through a pipeline;
s6, absorbing chlorine in the chlorine stripping device (12) by a second air pump (13), adding the chlorine into a chlorine pipe (15), and collecting and recycling the chlorine;
s7, filtering the liquid in the filtering device (9), and enabling the filtered liquid to enter the collecting device (10) through a pipeline;
s8, when the liquid in the collecting device (10) is full, the liquid is conveyed to a centralized treatment pool through the moving device (11) for centralized treatment;
s9, when the collecting device (10) is replaced, the clamping block (18) is moved, the clamping block (18) drives the telescopic rod (17) to stretch, the clamping spring (19) is compressed, the collecting device (10) is taken out, the new collecting device (10) is replaced, the clamping block (18) is loosened, and the clamping spring (19) enables the clamping block (18) to clamp the collecting device (10).
6. The continuous chlorination production process of benzyl chloride according to claim 5, wherein: in the operation step S1, the speed of conveying chlorine gas to the chlorination tower (1) by the chlorine gas pipe (15) is 5m3/S。
7. The continuous chlorination production process of benzyl chloride according to claim 5, wherein: in the operation step of S6, the second air pump (13) outputs air with a speed of 5m3/S。
8. The continuous chlorination production process of benzyl chloride according to claim 5, wherein: in the operation step of S3, the speed of the output liquid of the water pump (3) is 5m3/S。
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Application publication date: 20210914 |