CN108503504A - A kind of Vinyl Chloride Production System and method of combination carbide and high-temperature chlorination - Google Patents
A kind of Vinyl Chloride Production System and method of combination carbide and high-temperature chlorination Download PDFInfo
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- CN108503504A CN108503504A CN201810259273.6A CN201810259273A CN108503504A CN 108503504 A CN108503504 A CN 108503504A CN 201810259273 A CN201810259273 A CN 201810259273A CN 108503504 A CN108503504 A CN 108503504A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/07—Preparation of halogenated hydrocarbons by addition of hydrogen halides
- C07C17/08—Preparation of halogenated hydrocarbons by addition of hydrogen halides to unsaturated hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/013—Preparation of halogenated hydrocarbons by addition of halogens
- C07C17/02—Preparation of halogenated hydrocarbons by addition of halogens to unsaturated hydrocarbons
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Abstract
The invention discloses the Vinyl Chloride Production System and method of a kind of combination carbide and high-temperature chlorination, which includes：Pass sequentially through acetylene generator, vinyl chloride production device, vinyl chloride low boiling tower, vinyl chloride high boiling tower, dichloroethanes high boiling tower, dichloroethanes low boiling tower, dichloroethane device, dichloroethane cracking furnace, vapor heat exchanger, chilling tower, hydrogen chloride gas tower and the vinyl chloride tower of piping connection, dichloroethanes high boiling tower is connect with high-temperature chlorination reactor, hydrogen chloride gas tower is connect with vinyl chloride production device, setting acetylene flow valve and acetylene flowmeter, acetylene flow valve and acetylene flowmeter are electrically connected central processing unit between acetylene generator and vinyl chloride production device；Setting hydrogen chloride gas flow valve and hydrogen chloride gas flowmeter body, hydrogen chloride gas flow valve and hydrogen chloride gas flowmeter body are electrically connected central processing unit between hydrogen chloride gas tower and vinyl chloride production device.The Vinyl Chloride Production System of the present invention can improve the precision of vinyl chloride.
Description
Technical field
The invention belongs to production cycles to recycle field, more particularly to a kind of chlorine of combination carbide and high-temperature chlorination
Ethylene production system and method.
Background technology
The preparation of vinyl chloride (VCM) is the important link in polyvinyl chloride (PVC) production process, and chloroethene is produced in carbide
During alkene, the dry hydrogen chloride from chlorination hydrogen production device and the acetylene gas reaction from acetylene unit generate thick chloroethene
Alkene, the thick vinyl chloride obtain polymer grade vinyl chloride after dehydration, purification, rectification working process.However, carbide produces vinyl chloride
The height boiling raffinate of middle generation is difficult to handle, and the hydrogen chloride gas generated in high-temperature chlorination production vinyl chloride can not be effectively sharp
With.
The research of automatic control technology is conducive to from complexity, danger, cumbersome work situation free the mankind simultaneously
Greatly improve control efficiency.Automatically control be engineering science a branch.It relate to the use of feedback principle to dynamical system
Automatic influence so that the value that output valve is wanted close to us.
Height boiling raffinate and the high combination carbide and high-temperature chlorine of vinyl chloride Product Precision can be handled therefore, it is necessary to a kind of
The Vinyl Chloride Production System and method of change method, to realize resource reutilization and energy conservation and environmental protection.
Invention content
For this purpose, the present invention proposes and a kind of can solve the above problem a kind of chlorine of combination carbide and high-temperature chlorination
Ethylene production system and method.
According to an aspect of the invention, there is provided a kind of vinyl chloride of combination carbide and high-temperature chlorination production system
System, including：Pass sequentially through piping connection acetylene generator, vinyl chloride production device, vinyl chloride low boiling tower, vinyl chloride high boiling tower,
Dichloroethanes high boiling tower, dichloroethanes low boiling tower, dichloroethane device, dichloroethane cracking furnace, vapor heat exchanger, chilling
Tower, hydrogen chloride gas tower and vinyl chloride tower, the dichloroethanes high boiling tower are also connect with high-temperature chlorination reactor, the hydrogen chloride gas
Tower is also connect with vinyl chloride production device, which is characterized in that is set on the pipeline between acetylene generator and vinyl chloride production device
Acetylene flow valve and acetylene flowmeter are set, the acetylene flow valve and the acetylene flowmeter are all connected with central processing unit, hydrogen chloride gas
Setting hydrogen chloride gas flow valve and hydrogen chloride gas flowmeter body on pipeline between body tower and vinyl chloride production device, the hydrogen chloride
Gas flow valve and the hydrogen chloride gas flowmeter body are all connected with central processing unit.
A preferred embodiment according to the present invention, vapor heat exchanger are also connect with dichloroethane device.
A preferred embodiment according to the present invention, vinyl chloride tower are also connect with dichloroethanes high boiling tower.
A preferred embodiment according to the present invention, acetylene flow valve can be butterfly valve.
A preferred embodiment according to the present invention, acetylene flow valve can be ball valve.
A preferred embodiment according to the present invention, hydrogen chloride gas flow valve can be butterfly valve.
A preferred embodiment according to the present invention, hydrogen chloride gas flow valve can be ball valve.
A preferred embodiment according to the present invention, acetylene flowmeter can be velocity flowmeter.
A preferred embodiment according to the present invention, hydrogen chloride gas flowmeter body can be velocity flowmeter.
According to another aspect of the present invention, a kind of vinyl chloride producer of combination carbide and high-temperature chlorination is provided
Method, including：
The flow of the acetylene gas is measured by acetylene flowmeter and the flow signal of acetylene gas is transmitted to central processing unit；
The flow of the hydrogen chloride gas is measured by hydrogen chloride gas flowmeter and the flow signal of hydrogen chloride gas is transmitted to center
Processor；Central processing unit compares the flow of acetylene gas and the flow of hydrogen chloride gas, with adjust acetylene flow valve and
Hydrogen chloride gas flow valve makes acetylene gas and the hydrogen chloride gas from hydrogen chloride gas tower according to the anti-of acetylene and hydrogen chloride
Answer molar ratio 1~3：1 is obtained by the reaction thick vinyl chloride in vinyl chloride produces device；Thick vinyl chloride successively through Vinylidene Chloride low boiling tower and
The rectifying of vinyl chloride high boiling tower obtains vinyl chloride product and by-product height boiling raffinate；Vinyl chloride product is as output of products, height boiling
Raffinate is delivered to dichloroethanes high boiling tower, to recycle the dichloroethanes in height boiling raffinate；Ethylene carries out being obtained by the reaction two with chlorine
Chloroethanes；The dichloroethanes is mixed with height boiling raffinate, obtains the first mixture；First mixture is in dichloroethane device
Vaporization obtains dichloroethanes gas；Dichloroethanes gas, which is delivered in pyrolysis furnace, to be cracked, and vinyl chloride, hydrogen chloride gas are obtained
Second mixture of body, a small amount of dichloroethanes and other light components；Second mixture is delivered in steam heat exchanger, recycling the
Heat in two mixtures obtains low-temperature mixed object；Low-temperature mixed object is delivered to chilling tower, removes other in low-temperature mixed object
Light component obtains the mixture of vinyl chloride, hydrogen chloride gas and a small amount of dichloroethanes；The hydrogen chloride gas is delivered to vinyl chloride life
It produces in device；The mixture of vinyl chloride and a small amount of dichloroethanes is delivered in vinyl chloride tower, obtains vinyl chloride product and a small amount of dichloro
Ethane；A small amount of dichloroethanes, which is delivered in dichloroethanes high boiling tower, to be recycled.
The present invention has the advantages that：
(1) acetylene flow valve and acetylene flowmeter of the invention are all connected with central processing unit, meanwhile, hydrogen chloride gas flow
Valve and hydrogen chloride gas flowmeter body are all connected with central processing unit, enabling control acetylene and chlorination respectively by central processing unit
The amount of hydrogen, to control the reaction ratio of acetylene and hcl reaction, optimization acetylene is reacted with hydrogen chloride, reduces height boiling raffinate
Amount, not only reduce dichloroethanes high boiling tower processing load, but also improve vinyl chloride product precision.
(2) present invention combines carbide and high-temperature chlorination to produce vinyl chloride, can recycle two chloroethenes in height boiling raffinate
Alkane carries out production vinyl chloride, realizes the cycling and reutilization of by-product.
(3) vapor heat exchanger of the invention is connect with dichloroethane device, realizes heat recovery and utilization.
(4) vinyl chloride tower of the invention is connect with dichloroethanes high boiling tower, to recycle the dichloroethanes in vinyl chloride, is realized
The cycling and reutilization of by-product.
Description of the drawings
Fig. 1 is the Vinyl Chloride Production System schematic diagram of the combination carbide and high-temperature chlorination of the present invention.
Fig. 2 is the relationship block diagram of the central processing unit and flowmeter and flow valve of the present invention.
In the accompanying drawings, 1- acetylene generators, 2- acetylene flow valves, 3- acetylene flowmeters, 4- vinyl chloride produce device, 5- chloroethenes
Alkene low boiling tower, 6- vinyl chloride high boiling towers, 7- high-temperature chlorination reactors, 8- dichloroethanes high boiling towers, 9- dichloroethanes low boiling towers,
10- dichloroethane devices, 11- dichloroethane cracking furnaces, 12- vapor heat exchangers, 13- chilling towers, 14- hydrogen chloride gas towers,
15- hydrogen chloride gas flow valves, 16- hydrogen chloride gas flowmeter bodies, 17- vinyl chloride towers.
Specific implementation mode
The present invention provides many applicable creative concepts, which can be reflected in a large number of on specific
Hereinafter.Specific embodiment described in following embodiments of the present invention is only as the specific implementation mode of the present invention
Exemplary illustration, and be not meant to limit the scope of the invention.
Fig. 1 is the Vinyl Chloride Production System schematic diagram of the combination carbide and high-temperature chlorination of the present invention, as shown in Figure 1,
The Vinyl Chloride Production System of a kind of combination carbide and high-temperature chlorination provided by the invention, including：Pass sequentially through piping connection
Acetylene generator 1, vinyl chloride production device 4, vinyl chloride low boiling tower 5, vinyl chloride high boiling tower 6, dichloroethanes high boiling tower 8, dichloro
Ethane low boiling tower 9, dichloroethane device 10, dichloroethane cracking furnace 11, vapor heat exchanger 12, chilling tower 13, hydrogen chloride gas
Body tower 14 and vinyl chloride tower 17, the dichloroethanes high boiling tower 8 are also connect with high-temperature chlorination reactor 7, the hydrogen chloride gas tower 14
It is also connect with vinyl chloride production device 4, which is characterized in that second is set on the pipeline between acetylene generator 1 and vinyl chloride production device 4
Alkynes flow valve 2 and acetylene flowmeter 3, the acetylene flow valve 2 are arranged in the acetylene outlet end of acetylene generator, and acetylene flow
The acetylene arrival end that device is produced in vinyl chloride is arranged in meter 3, therefore, when acetylene flowmeter 3 detects that acetylene amount is bigger than normal, Ke Yitong
The aperture that central processing unit turns acetylene flow valve down is crossed, is set on the pipeline between hydrogen chloride gas tower 14 and vinyl chloride production device 4
Hydrogen chloride gas flow valve 15 and hydrogen chloride gas flowmeter body 16 are set, which is arranged in hydrogen chloride gas
The hydrogen chloride gas outlet end of tower 14, and the hydrogen chloride gas that device 4 is produced in vinyl chloride is arranged in hydrogen chloride gas flowmeter body 16
Therefore arrival end when hydrogen chloride gas flow valve 15 detects that the hydrogen chloride gas scale of construction is bigger than normal, can pass through central processing unit tune
The aperture of small hydrogen chloride gas flow valve.Present invention combination carbide and high-temperature chlorination produce vinyl chloride, can recycle height boiling
Dichloroethanes in raffinate carries out production vinyl chloride, realizes the cycling and reutilization of by-product.
Vapor heat exchanger 12 is also connect with dichloroethane device 10.Vapor heat exchanger 12 is by from dichloroethane cracking furnace
Carry out effective recuperation of heat in 11 output object and produce steam, therefore, by vapor heat exchanger 12 also with dichloroethane device
10 connections so that steam is sent into dichloroethane device 10, for being gaseous state dichloroethanes by the gasification of liquid dichloroethanes.This
The vapor heat exchanger of invention is connect with dichloroethane device, realizes heat recovery and utilization.
Vinyl chloride tower 17 is also connect with dichloroethanes high boiling tower 8.Vinyl chloride tower 17 is also connected with dichloroethanes high boiling tower 8
It connects, the dichloroethanes in vinyl chloride tower 17 is delivered in dichloroethanes high boiling tower.The vinyl chloride tower and two chloroethenes of the present invention
Alkane high boiling tower connects, and to recycle the dichloroethanes in vinyl chloride, realizes the cycling and reutilization of by-product.
Wherein, acetylene flow valve can be butterfly valve or ball valve.Similarly, hydrogen chloride gas flow valve can be butterfly valve or ball
Valve.Butterfly valve and ball valve can adjust the flow of acetylene and hydrogen chloride gas so that acetylene and hcl reaction react mole
Than being 1~3：1.Butterfly valve can be DH non-return butterfly valves, and ball valve can be PQ- eccentric ball valves.
Acetylene flow is calculated as velocity flowmeter so that the velocity flowmeter measures the flow of acetylene, and then calculates ginseng
With the mole of the acetylene reacted.Velocity flowmeter can be EXQ41W flowmeters.
Hydrogen chloride gas flowmeter body is velocity flowmeter so that the velocity flowmeter measures the stream of hydrogen chloride gas
Amount, and then calculate the mole for the hydrogen chloride gas for participating in reaction.
Central processing unit is chip, which can be obtained by acetylene flowmeter and hydrogen chloride gas flowmeter body
The flow of acetylene and the flow of hydrogen chloride gas, calculate the ratio between the flow of acetylene and the flow of hydrogen chloride gas, according to acetylene
The ratio between flow of flow and hydrogen chloride gas adjusts the aperture of acetylene flow valve and hydrogen chloride gas flow valve.
Fig. 2 is the relationship block diagram of central processing unit and flowmeter and flow valve that Fig. 2 is the present invention, as shown in Fig. 2, acetylene
Flow valve, acetylene flowmeter, hydrogen chloride gas flow valve and hydrogen chloride gas flowmeter body are electrically connected to the same central processing unit,
The amount for making it possible to control acetylene and hydrogen chloride respectively by central processing unit, to control reacting for acetylene and hcl reaction
Molar ratio is 1~3：1, optimization acetylene and hydrogen chloride react, and reduce side reaction, this is because when acetylene and hcl reaction
It reacts molar ratio and is more than 1~3：When 1 so that cause the waste of reactant acetylene；When reacting mole for acetylene and hcl reaction
Than being less than 1~3：When 1 so that acetylene increases with the by-product dichloroethanes amount that hcl reaction generates, thus in height boiling raffinate
Dichloroethanes increase, therefore increase dichloroethanes high boiling tower processing dichloroethanes burden.Therefore, acetylene stream of the invention
Amount valve and acetylene flowmeter are all connected with central processing unit, meanwhile, hydrogen chloride gas flow valve and hydrogen chloride gas flowmeter body connect
Connect central processing unit, enabling the amount for controlling acetylene and hydrogen chloride respectively by central processing unit, to control acetylene and chlorine
Change the reaction ratio of hydrogen reaction, optimization acetylene is reacted with hydrogen chloride, reduces the amount of height boiling raffinate, and it is high not only to reduce dichloroethanes
The processing load of tower is boiled, and improves the precision of vinyl chloride product.
The combination carbide of the present invention and the operation principle of the Vinyl Chloride Production System of high-temperature chlorination are as follows：
Calcium carbide and water carry out that acetylene gas is obtained by the reaction, and measure the flow of the acetylene gas by acetylene flowmeter and by acetylene gas
Flow signal be transmitted to central processing unit, the flow of the hydrogen chloride gas is measured by hydrogen chloride gas flowmeter and by chlorination
The flow signal of hydrogen is transmitted to central processing unit, central processing unit to the flow of the flow of acetylene gas and hydrogen chloride gas into
Row comparison, makes acetylene gas and the hydrogen chloride from hydrogen chloride gas tower to adjust acetylene flow valve and hydrogen chloride gas flow valve
Gas reacts molar ratio 1~3 according to acetylene and hydrogen chloride：1 is obtained by the reaction thick vinyl chloride in vinyl chloride produces device, specifically
Ground, when central processing unit is according to the flow of acetylene gas and the ratio acetylene of the flow rate calculation of hydrogen chloride gas and reacting for hydrogen chloride
Molar ratio is less than 1~3：When 1, central processing unit control adjustment hydrogen chloride gas flow valve opening is reduced, by acetylene and chlorination
The reaction molar ratio of hydrogen is adjusted to 1~3：1；When central processing unit is according to the flow of acetylene gas and the flow rate calculation of hydrogen chloride gas
The molar ratio of reacting of ratio acetylene and hydrogen chloride be more than 1~3：When 1, central processing unit control adjustment acetylene flow valve opening subtracts
It is few, acetylene is adjusted with the molar ratio of reacting of hydrogen chloride to 1~3：1；Thick vinyl chloride is successively through Vinylidene Chloride low boiling tower and chlorine
The rectifying of ethylene high boiling tower obtains vinyl chloride product and by-product height boiling raffinate；For vinyl chloride product as output of products, height boiling is residual
Liquid is delivered to dichloroethanes high boiling tower, to recycle the dichloroethanes in height boiling raffinate；Ethylene with chlorine carries out that dichloro is obtained by the reaction
Ethane；The dichloroethanes is mixed with height boiling raffinate, obtains the first mixture；First mixture vapour in dichloroethane device
Change obtains dichloroethanes gas；Dichloroethanes gas, which is delivered in pyrolysis furnace, to be cracked, obtain vinyl chloride, hydrogen chloride gas,
Second mixture of a small amount of dichloroethanes and other light components；Second mixture is delivered in steam heat exchanger, recycling second
Heat in mixture obtains low-temperature mixed object；Low-temperature mixed object is delivered to chilling tower, other in removing low-temperature mixed object are light
Component obtains the mixture of vinyl chloride, hydrogen chloride gas and a small amount of dichloroethanes；The hydrogen chloride gas is delivered to vinyl chloride production
In device；The mixture of vinyl chloride and a small amount of dichloroethanes is delivered in vinyl chloride tower, obtains vinyl chloride product and a small amount of two chloroethene
Alkane；And a small amount of dichloroethanes, which is delivered in dichloroethanes high boiling tower, to be recycled.
The combination carbide of the present invention and the vinyl chloride production method of high-temperature chlorination include the following steps：Pass through acetylene stream
Gauge measures the flow of the acetylene gas and the flow signal of acetylene gas is transmitted to central processing unit；Pass through hydrogen chloride gas flow
Meter measures the flow of the hydrogen chloride gas and the flow signal of hydrogen chloride gas is transmitted to central processing unit；Central processing unit pair
The flow of acetylene gas and the flow of hydrogen chloride gas are compared, and are made with adjusting acetylene flow valve and hydrogen chloride gas flow valve
Acetylene gas and the hydrogen chloride gas from hydrogen chloride gas tower react molar ratio 1~3 according to acetylene and hydrogen chloride：1 in chloroethene
Thick vinyl chloride is obtained by the reaction in alkene production device；Thick rectifying of the vinyl chloride successively through Vinylidene Chloride low boiling tower and vinyl chloride high boiling tower obtains
To vinyl chloride product and by-product height boiling raffinate；Vinyl chloride product is delivered to dichloroethanes height as output of products, height boiling raffinate
Tower is boiled, to recycle the dichloroethanes in height boiling raffinate；Ethylene with chlorine carries out that dichloroethanes is obtained by the reaction；The dichloroethanes and height
Raffinate mixing is boiled, the first mixture is obtained；First mixture vaporizes in dichloroethane device and obtains dichloroethanes gas；
Dichloroethanes gas, which is delivered in pyrolysis furnace, to be cracked, and obtains vinyl chloride, hydrogen chloride gas, a small amount of dichloroethanes and other are light
Second mixture of component；Second mixture is delivered in steam heat exchanger, is recycled the heat in the second mixture, is obtained low
Warm mixture；Low-temperature mixed object is delivered to chilling tower, removes other light components in low-temperature mixed object, obtains vinyl chloride, chlorination
The mixture of hydrogen and a small amount of dichloroethanes；The hydrogen chloride gas is delivered in vinyl chloride production device；Vinyl chloride and a small amount of two
The mixture of chloroethanes is delivered in vinyl chloride tower, obtains vinyl chloride product and a small amount of dichloroethanes；A small amount of dichloroethanes is defeated
It send into dichloroethanes high boiling tower and is recycled.
Central processing unit of the present invention controls acetylene flow valve according to the reading of acetylene flowmeter and hydrogen chloride gas flowmeter body
With the aperture of hydrogen chloride gas flow valve, enabling the reaction ratio of control acetylene and hcl reaction optimizes acetylene and chlorine
Change the reaction of hydrogen, reduce the amount of height boiling raffinate, not only reduce the processing load of dichloroethanes high boiling tower, but also improves vinyl chloride production
The precision of product.
The method combination carbide and high-temperature chlorination of the present invention produces vinyl chloride, can recycle the dichloro in height boiling raffinate
Ethane carries out production vinyl chloride, realizes the cycling and reutilization of by-product.
The present invention method further include：Vapor heat exchanger is effective by being carried out from the output object of dichloroethane cracking furnace
Recuperation of heat and produce steam, and vapor heat exchanger is sent steam into dichloroethane device, for by liquid dichloroethanes
Gasification is gaseous state dichloroethanes, realizes heat recovery and utilization.
The present invention method further include：Dichloroethanes in vinyl chloride tower is delivered in dichloroethanes high boiling tower, to return
The dichloroethanes in vinyl chloride is received, realizes the cycling and reutilization of by-product.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and this
Field technology personnel can design alternative embodiment without departing from the scope of the appended claims.In claim
In, any reference mark between bracket should not be configured to limitations on claims.Word "comprising" is not excluded for depositing
In element or step not listed in the claims.Word "a" or "an" before element do not exclude the presence of it is multiple this
The element of sample.The use of word first, second, and third does not indicate that any sequence.These words can be construed to title.
Claims (10)
1. a kind of Vinyl Chloride Production System of combination carbide and high-temperature chlorination, which is characterized in that including：
Pass sequentially through acetylene generator, vinyl chloride production device, vinyl chloride low boiling tower, vinyl chloride high boiling tower, the dichloro of piping connection
Ethane high boiling tower, dichloroethanes low boiling tower, dichloroethane device, dichloroethane cracking furnace, vapor heat exchanger, chilling tower, chlorine
Change hydrogen tower and vinyl chloride tower,
The dichloroethanes high boiling tower is also connect with high-temperature chlorination reactor,
The hydrogen chloride gas tower is also connect with vinyl chloride production device,
Setting acetylene flow valve and acetylene flowmeter on pipeline between the acetylene generator and vinyl chloride production device, institute
It states acetylene flow valve and the acetylene flowmeter is electrically connected central processing unit；
Setting hydrogen chloride gas flow valve and chlorination on pipeline between the hydrogen chloride gas tower and vinyl chloride production device
Hydrogen flowmeter body, the hydrogen chloride gas flow valve and the hydrogen chloride gas flowmeter body are electrically connected central processing unit.
2. Vinyl Chloride Production System according to claim 1, which is characterized in that the vapor heat exchanger also with the dichloro
Ethane chlorination device connects.
3. Vinyl Chloride Production System according to claim 2, which is characterized in that the vinyl chloride tower also with two chloroethene
Alkane high boiling tower connects.
4. Vinyl Chloride Production System according to claim 3, which is characterized in that the acetylene flow valve is butterfly valve.
5. Vinyl Chloride Production System according to claim 3, which is characterized in that the acetylene flow valve is ball valve.
6. Vinyl Chloride Production System according to claim 3, which is characterized in that the hydrogen chloride gas flow valve is butterfly
Valve.
7. Vinyl Chloride Production System according to claim 3, which is characterized in that the hydrogen chloride gas flow valve is ball
Valve.
8. Vinyl Chloride Production System according to claim 3, which is characterized in that the acetylene flow is calculated as velocity-type
Meter.
9. Vinyl Chloride Production System according to claim 3, which is characterized in that the hydrogen chloride gas flowmeter body is speed
Formula flowmeter.
10. the vinyl chloride production method of a kind of combination carbide and high-temperature chlorination, which is characterized in that including：
The flow of the acetylene gas is measured by acetylene flowmeter and the flow signal of acetylene gas is transmitted to central processing unit；
The flow of the hydrogen chloride gas is measured by hydrogen chloride gas flowmeter and is transmitted to the flow signal of hydrogen chloride gas
Central processing unit；
Central processing unit compares the flow of acetylene gas and the flow of hydrogen chloride gas, to adjust acetylene flow valve and chlorination
Hydrogen flow valve makes acetylene gas rub with reacting for hydrogen chloride according to acetylene with the hydrogen chloride gas from hydrogen chloride gas tower
That ratio 1~3：1 is obtained by the reaction thick vinyl chloride in vinyl chloride produces device；
Thick rectifying of the vinyl chloride successively through Vinylidene Chloride low boiling tower and vinyl chloride high boiling tower obtains vinyl chloride product and by-product is high
Boil raffinate；
Vinyl chloride product is delivered to dichloroethanes high boiling tower as output of products, height boiling raffinate, to recycle two in height boiling raffinate
Chloroethanes；
Ethylene with chlorine carries out that dichloroethanes is obtained by the reaction；
The dichloroethanes is mixed with height boiling raffinate, obtains the first mixture；
First mixture vaporizes in dichloroethane device and obtains dichloroethanes gas；
Dichloroethanes gas, which is delivered in pyrolysis furnace, to be cracked, obtain vinyl chloride, hydrogen chloride gas, a small amount of dichloroethanes and its
Second mixture of his light component；
Second mixture is delivered in steam heat exchanger, is recycled the heat in the second mixture, is obtained low-temperature mixed object；
Low-temperature mixed object is delivered to chilling tower, removes other light components in low-temperature mixed object, obtains vinyl chloride, hydrogen chloride gas
With the mixture of a small amount of dichloroethanes；
The hydrogen chloride gas is delivered in vinyl chloride production device；
The mixture of vinyl chloride and a small amount of dichloroethanes is delivered in vinyl chloride tower, obtains vinyl chloride product and a small amount of two chloroethene
Alkane；
A small amount of dichloroethanes, which is delivered in dichloroethanes high boiling tower, to be recycled.
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| CN201720960829 | 2017-08-02 | ||
| CN2017209608295 | 2017-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114163298A (en) * | 2021-10-23 | 2022-03-11 | 新疆天业（集团）有限公司 | Novel process for producing chloroethylene from methanol |
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| CN107311835A (en) * | 2017-06-02 | 2017-11-03 | 青海盐湖工业股份有限公司 | The processing system and processing method of rectifying height boiling raffinate in a kind of carbide production vinyl chloride |
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