CN107573207A - A kind of Joint Production system and method for vinyl chloride - Google Patents
A kind of Joint Production system and method for vinyl chloride Download PDFInfo
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Abstract
The present invention discloses a kind of Joint Production system of vinyl chloride, including ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT, resolving hydrochloric acid device and exhaust gas processing device, wherein, byproduct hydrogen chloride is supplied to the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT to be used to produce vinyl chloride by the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, is supplied to the resolving hydrochloric acid device to be used to store hydrochloric acid byproduct hydrogen chloride；Hydrogen chloride is supplied to the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT to be used to produce vinyl chloride by the resolving hydrochloric acid device；Byproduct steam is supplied to the resolving hydrochloric acid device by the exhaust gas processing device, for providing heat.The byproduct steam of exhaust gas processing device is applied to the supply and use of steam in whole production technology by the present invention, it is supplied to resolving hydrochloric acid device, resolving hydrochloric acid is carried out for providing heat, not only realize clean manufacturing, and the economic effect that energy regenerating utilizes is reached, production cost is reduced, also achieves the comprehensive cyclic utilization of industrial chain.
Description
Technical field
The present invention relates to the technical field of resource comprehensive utilization of chemical products, and in particular to a kind of Joint Production of vinyl chloride
System and method.
Background technology
Vinyl chloride (also known as vinyl chloride, Vinyl Chloride Monomer, abbreviation VCM) is than sky at normal temperatures and pressures
Gas weighs one times, is slightly soluble in the colourless gas of water, inflammable, band narcoticness aromatic odor.
Vinyl chloride is a kind of important monomer applied to macromolecule chemical industry, can polymerize generation high-molecular compound polychlorostyrene
Ethene (Polyvinyl Chloride, abbreviation PVC) resin.Polyvinyl chloride resin is to be liked deeply at present, be rather popular and also wide
A kind of synthetic material of general application, turn into the second largest resins for universal use for being only second to vinyl in the world, account for world's synthesis
The 29% of resin aggregate consumption.Polyvinyl chloride resin easy processing, molding, laminated, injection, extrusion molding, calendering, the blowing side such as hollow can be passed through
Formula is processed, polyvinyl chloride resin mainly for the production of the plastics soft goods such as artificial leather, film, trunking, can also produce sheet material,
The plastics boardy product such as door and window, pipeline and valve.
Vinyl chloride can be made by ethene or acetylene, and the main method of industrial production vinyl chloride is process for oxychlorination of ethylene, ethene
Chlorination generates dichloroethanes, and dichloroethanes thermal cracking is vinyl chloride and hydrogen chloride, and it is anti-that oxychlorination occurs for ethene, hydrogen chloride and oxygen
Dichloroethanes should be generated.Ethylene chlorination process and oxi-chlorination can all bring a large amount of waste water in production process, produce simultaneously
A large amount of byproduct hydrogen chlorides, it can be common that absorbed with water and be changed into waste hydrochloric acid, can be dirty if do not handled for a large amount of waste water waste hydrochloric acids
Environment is contaminated, is unfavorable for clean manufacturing, needs a large amount of out-of-bounds steam of supply to heat it if resolving hydrochloric acid processing is carried out, improves
Production cost, if carrying out neutralization reaction with sodium hydroxide, value reduces, it is difficult to backward reaction re-uses hydrogen chloride,
And sodium hydroxide corrosivity is strong, it is too strong to easily cause local alkalescence.
Acetylene method production VCM is then that calcium carbide meets water generation acetylene, and under mercuric chleride catalyst effect, acetylene adds with hydrogen chloride
Into direct synthesis vinyl chloride thereof.For wherein hydrogen chloride as main raw material, quality requirement is higher, and common is hydrogen and chlorine in chlorine
Change reaction generation hydrogen chloride in hydrogen synthetic furnace, by being applied to the addition reaction of vinyl chloride after drying process, but hydrogen chloride closes
Once into stove improper use, it is easy to explode, waste chlorine is also required to sodium hydroxide absorption processing, has both added answering for system
Polygamy, production cost is improved, also bring potential safety hazard.
So the problem of production cost is high, spent acid processing is difficult when preparing vinyl chloride be present in existing acetylene method or ethylene process,
Therefore it is badly in need of developing a kind of new method to prepare vinyl chloride.
The content of the invention
It is an object of the invention to provide a kind of Joint Production system and method for vinyl chloride, for solving existing method
Prepare the problem of existing production cost during vinyl chloride is high, spent acid processing is difficult.
To achieve these goals, the present invention provides following technical scheme：A kind of Joint Production system of vinyl chloride, it is wrapped
Ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT, resolving hydrochloric acid device and exhaust gas processing device are included, its
In, the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT produces TOWER OUTLET IN VINYL CHLORIDE UNIT with acetylene method respectively and resolving hydrochloric acid device is connected, institute
Stating ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT is supplied to the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT to be used to produce chlorine byproduct hydrogen chloride
Ethene, it is supplied to the resolving hydrochloric acid device to be used to store hydrochloric acid byproduct hydrogen chloride；The acetylene method production vinyl chloride dress
Put and be connected with the resolving hydrochloric acid device, hydrogen chloride is supplied to the acetylene method production vinyl chloride to fill by the resolving hydrochloric acid device
Put for producing vinyl chloride；The exhaust gas processing device produces chlorine with ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, acetylene method respectively
Ethylene unit and the connection of resolving hydrochloric acid device, the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT will
Tail gas is supplied to the exhaust gas processing device to be used to handle, and accessory substance steam is supplied to the hydrochloric acid by the exhaust gas processing device
Resolver, for providing heat.
Preferably, the resolving hydrochloric acid device includes resolving hydrochloric acid unit and the hydrochloric acid depth resolution unit being connected, described
Ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT is connected with the resolving hydrochloric acid unit, is supplied to the resolving hydrochloric acid unit to deposit in hydrogen chloride
Storage, the resolving hydrochloric acid unit and hydrochloric acid depth resolution unit are connected with acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT respectively, by hydrochloric acid
Parse hydrogen chloride and be supplied to the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT, for producing vinyl chloride.
Resolving hydrochloric acid device provided by the invention includes resolving hydrochloric acid unit and hydrochloric acid depth resolution unit, by the dense salt of storage
Acidolysis separates out hydrogen chloride, and the watery hydrochloric acid after parsing parses hydrogen chloride deeply again, improves the utilization rate of hydrogen chloride as far as possible.
Preferably, hydrogen, H chloride absorber, the first hydrochloric acid tank, the hydrochloric acid that the resolving hydrochloric acid unit includes being linked in sequence are pre-
Hot device, the first Analytic Tower, the first hydrogen chloride cooler and the second hydrochloric acid tank, the hydrogen, H chloride absorber and the ethene
Hydrogen chloride after parsing is supplied to the acetylene method to produce by method production TOWER OUTLET IN VINYL CHLORIDE UNIT connection, first hydrogen chloride cooler
TOWER OUTLET IN VINYL CHLORIDE UNIT, for producing vinyl chloride, the hydrochloric acid after parsing is supplied to the hydrochloric acid to parse deeply by second hydrochloric acid tank
Unit is used for deep parsing, and accessory substance steam is supplied to first Analytic Tower by the exhaust gas processing device, for providing heat.
The origin of heat of resolving hydrochloric acid unit provided by the invention is straight in the byproduct steam of exhaust gas processing device, byproduct steam
Scoop out and be used for the first Analytic Tower, avoid out-of-bounds steam, reduce production cost.
Preferably, the hydrochloric acid depth resolution unit includes the calcium chloride preparing tank, jet mixer, the second solution being linked in sequence
Tower, the second hydrogen chloride cooler are analysed, second hydrochloric acid tank is connected with the jet mixer, for providing the salt after parsing
Hydrogen chloride after deep parse is supplied to the acetylene method to produce TOWER OUTLET IN VINYL CHLORIDE UNIT, is used for by acid, second hydrogen chloride cooler
Vinyl chloride is produced, accessory substance steam is supplied to the calcium chloride preparing tank to be parsed with described second by the exhaust gas processing device
Tower, for providing heat.
Hydrochloric acid depth resolution unit provided by the invention does brokenly boiling agent using calcium chloride, changes hydrogen chloride and water system
Azeotropic balances so that hydrogen chloride can further parse in watery hydrochloric acid, substantially increase solution of the hydrogen chloride in hydrochloric acid
Analysis rate, and byproduct steam is supplied to calcium chloride preparing tank to be used to configure calcium chloride solution by exhaust gas processing device, there is provided to the
Two Analytic Towers are used for deep parsing, reduce the use of out-of-bounds steam, reduce production cost.
Preferably, the hydrochloric acid depth resolution unit also include located at second Analytic Tower and the calcium chloride preparing tank it
Between concentration tower, recycled for calcium chloride to be recycled into the calcium chloride preparing tank.
Hydrochloric acid depth resolution unit provided by the invention is provided with concentration tower, can be to being returned in the mixed solution of calcium chloride and hydrochloric acid
Receive calcium chloride so that calcium chloride can recycle, and further improve the utilization rate of calcium chloride, reduce material waste.
Preferably, the Joint Production system of the vinyl chloride also includes steam condensate tank, the steam condensate tank with
The ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT connection, the steam condensate in reaction is supplied to
The resolving hydrochloric acid device is used for hydrochloric acid and parsed deeply.
The Joint Production system of vinyl chloride provided by the invention is provided with steam condensate tank, by the steam of each device in production
Condensate liquid collects, there is provided resolving hydrochloric acid device is given, so as to saving water resource.
Preferably, the exhaust gas processing device includes incinerator, byproduct steam tank, tail gas quenching tower, the tail being linked in sequence
Aspiration tower and caustic wash tower, the tail gas of the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT are supplied to the incinerator to burn, the pair
Producing steam tank provides steam to ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT, resolving hydrochloric acid device.
Exhaust gas processing device provided by the invention carries out high temperature incineration, by-product high-temperature steam to the waste gas in production, waste liquid
And high purity hydrochloric acid, it both ensure that the cleaning of environment, and the steam and hydrochloric acid that by-product technique productions need, realize resource and energy
The maximization that source utilizes.
Preferably, the Joint Production system of the vinyl chloride also includes the pressure and temperature reducing being connected with the exhaust gas processing device
Device, the temperature-decreased pressure reducer will be supplied to the resolving hydrochloric acid device after the accessory substance steam pressure-reducing of the exhaust gas processing device.
The Joint Production system of vinyl chloride provided by the invention is provided with temperature-decreased pressure reducer, can be according to the condition of production to by-product
Steam is adjusted, and reduces pressure with protection equipment.
The present invention also provides a kind of combine production method of vinyl chloride, comprises the following steps that：
1) vinyl chloride is prepared through ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT in ethene and chlorine, and byproduct hydrogen chloride is supplied to institute
State acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT, the hydrogen chloride that ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT provides is excessive or the acetylene method
The ethylene process produces TOWER OUTLET IN VINYL CHLORIDE UNIT and hydrogen chloride is supplied into resolving hydrochloric acid when production TOWER OUTLET IN VINYL CHLORIDE UNIT can not receive hydrogen chloride
Device；
2) vinyl chloride is prepared through acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT in acetylene made from calcium carbide and water and hydrogen chloride,
When the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT can not provide hydrogen chloride, resolving hydrochloric acid is gone out hydrogen chloride and carried by the resolving hydrochloric acid device
Supply the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT；
3) tail gas is supplied at the tail gas by the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT
Reason device is used to handle, and accessory substance steam is supplied to the ethylene process to produce TOWER OUTLET IN VINYL CHLORIDE UNIT, second by the exhaust gas processing device
Alkynes method production TOWER OUTLET IN VINYL CHLORIDE UNIT, resolving hydrochloric acid device, for providing heat.
Preferably, the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT are cold by the steam in reaction
Lime set is supplied to the resolving hydrochloric acid device to be used for hydrochloric acid and parsed deeply.
Compared to prior art, the Joint Production system and method for vinyl chloride provided by the invention has the advantage that：
First, the present invention provides ethylene process and acetylene method Joint Production vinyl chloride, devises a kind of vinyl chloride joint of innovation
Production process route, the byproduct hydrogen chloride of output is directly used in acetylene method production vinyl chloride and worked as when ethylene process is produced into vinyl chloride
In, hydrogen chloride caused by cracking dichloroethanes is free of free chlorine and moisture when producing vinyl chloride due to ethylene process, greatly reduces
The possibility that generation chloroacetylene explodes in acetylene method production vinyl chloride, and greatly reduce to vinyl chloride converter
Corrosivity, add the service life of equipment；
2nd, the Joint Production system of vinyl chloride provided by the invention is provided with resolving hydrochloric acid device as intermediate buffer,
When the hydrogen chloride of ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT production is excessive or acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT can not receive hydrogen chloride
When, resolving hydrochloric acid device can store hydrogen chloride, be neutralized without sodium hydroxide, also reduce the security risk of leakage；When
When ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT breaks down or acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT recovers normal, resolving hydrochloric acid device can
So that hydrogen chloride to be parsed from hydrochloric acid, hydrogen chloride is re-used so that Joint Production system both can also may be used with Joint Production
With isolated operation, operating flexibility is drastically increased, can be regulated and controled accordingly according to the situation of actual production, more flexibly
Property；
3rd, the byproduct steam of exhaust gas processing device is applied to the supply of steam in whole production technology and made by the present invention
With, there is provided resolving hydrochloric acid device is given, resolving hydrochloric acid is carried out for providing heat, not only realizes clean manufacturing, and reach
The economic effect that energy regenerating utilizes, production cost is reduced, also achieve the comprehensive cyclic utilization of industrial chain.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.In the accompanying drawings：
Fig. 1 shows a kind of structural representation of the Joint Production system of the vinyl chloride of preferred embodiment of the present invention；
Fig. 2 shows the process chart of the Joint Production system of vinyl chloride shown in Fig. 1.
Reference
1- ethylene processes production TOWER OUTLET IN VINYL CHLORIDE UNIT, 11- high temperature direct chlorination reactors,
12-EDC rectification cells, 121-EDC high boiling towers,
122- cracks EDC storage tanks, and 13-EDC cracks unit,
131-EDC vaporizers, 132-EDC pyrolysis furnaces,
14- byproduct steam heat exchangers, 15-VCM refined units,
151- hydrogen chloride columns, 152- vinyl chloride towers,
153- vinyl chloride strippers, the spherical tanks of 16- first,
17-EDC recovery units, 171- vacuum columns,
172-EDC high-boiling components storage tanks, 173- light component chlorinators,
2- acetylene methods production TOWER OUTLET IN VINYL CHLORIDE UNIT, 21- acetylene generators,
22- acetylene cleaning units, 23- blenders,
24- dewatering units, 25- steam heaters,
26-VCM converters, 27-VCM rectification cells,
The spherical tanks of 28- second, 3- resolving hydrochloric acid devices,
31- resolving hydrochloric acid units, 311- hydrogen, H chloride absorbers,
The hydrochloric acid tanks of 312- first, 313- hydrochloric acid preheaters,
The Analytic Towers of 314- first, the hydrogen chloride coolers of 315- first,
The hydrochloric acid tanks of 316- second, 32- hydrochloric acid depth resolution units,
321- calcium chloride preparing tanks, 322- jet mixers,
The Analytic Towers of 323- second, the hydrogen chloride coolers of 324- second,
325- concentration towers, 33- demisters,
4- exhaust gas processing devices, 41- incinerators,
42- byproduct steam tanks, 43- tail gas quenching towers,
44- tail gas absorbers, 45- caustic wash towers,
5- temperature-decreased pressure reducers, 6- steam condensate tanks.
Embodiment
The invention provides many applicable creative concepts, the creative concept can be reflected in a large number of on specific
Hereinafter.Specific embodiment described in following embodiments of the present invention is only as embodiment of the invention
Exemplary illustration, and be not meant to limit the scope of the invention.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the present embodiment provides a kind of Joint Production system of vinyl chloride, it includes ethylene process production vinyl chloride
Device 1, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2, resolving hydrochloric acid device 3, exhaust gas processing device 4, temperature-decreased pressure reducer 5 and steam
Condensate drum 6.
The ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1 produces TOWER OUTLET IN VINYL CHLORIDE UNIT 2, resolving hydrochloric acid device 3, tail with acetylene method respectively
Flash Gas Compression Skid System 4 and steam condensate tank 6 connect, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 respectively with the resolving hydrochloric acid
Device 3, exhaust gas processing device 4, temperature-decreased pressure reducer 5 and steam condensate tank 6 connect, the resolving hydrochloric acid device 3 respectively with
Temperature-decreased pressure reducer 5 and steam condensate tank 6 are connected, and the exhaust gas processing device 4 is connected with the temperature-decreased pressure reducer 5.
As shown in Fig. 2 the combine production method of the vinyl chloride comprises the following steps：
Step 1: ethylene process produces vinyl chloride：
Ethene and chlorine prepare vinyl chloride through ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1, and byproduct hydrogen chloride is supplied to institute
State the acetylene method production device of vinyl chloride 2, the hydrogen chloride that ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1 provides is excessive or the acetylene
The ethylene process produces TOWER OUTLET IN VINYL CHLORIDE UNIT 1 and hydrogen chloride is supplied into hydrochloric acid when method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 can not receive hydrogen chloride
Resolver 3.
The ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1 includes high temperature direct chlorination reactor 11, the EDC rectifying lists being linked in sequence
Member 12, EDC cracking unit 13, byproduct steam heat exchanger 14, VCM refined units 15, the first spherical tank 16.
The high temperature direct chlorination reactor 11 is reaction unit, chlorine and ethene in 0.2MPa, 120 DEG C or so of condition
Under with the dichloroethanes (Dichloroethane, abbreviation EDC) of liquid for medium, be catalyst in the high temperature using ferric trichloride
Blistering reaction occurs in direct chlorination reactor 11 and generates thick EDC, thick EDC is in the high temperature direct chlorination reactor 11 by certainly
The liberated heat vaporization of body reaction institute, is distillated into the EDC rectification cells 12 from top in the form of a vapor.
The high temperature direct chlorination reactor 11 is simple iron catalyst system, it is not necessary to special catalyst is added,
It need to only be overhauled in every 2-3 full maintenances, reduce reaction cost.Acceptable quality of chlorine gas scope is wider simultaneously.The height
Warm direct chlorination reactor 11 is natural circulation reactor, it is not necessary to large-scale liquid circulation pump, the reaction heat of direct chlorination reaction
100% fully effective is recycled.
The EDC rectification cells 12 include the EDC high boiling towers 121 being connected with the high temperature direct chlorination reactor 11 and split
Solve EDC storage tanks 122.Except high-boiling components (the boiling point impurity higher than the EDC) rear side of dereaction generation in the EDC high boiling towers 121
Smart EDC is made in line stripping, and smart EDC, which is stored to the cracking EDC storage tanks 122, to be used to crack.The EDC of vaporization is directly entered described
EDC high boiling towers 121, EDC distillation removing heavy components do not need steam, and reactor can realize that load is down to designed capacity
30% operation.
The EDC cracking unit 13 includes the EDC vaporizers 131 being connected with the cracking EDC storage tanks 122 and EDC cracking
Stove 132.The EDC vaporizers 131 the smart EDC in the cracking EDC storage tanks 122 is vaporized by steam after in the form of a vapor
The EDC pyrolysis furnaces 132 are sent into, EDC cracking reactions occur at a temperature of 1.01MPa, 480 DEG C or so, generate thick vinyl chloride
(Vinyl Chloride Monomer, abbreviation VCM) and HCl, the conversion ratio (cracking severity) of dichloroethanes are controlled 55%.
The byproduct steam heat exchanger 14 is connected with the EDC pyrolysis furnaces 132, is split from what the EDC pyrolysis furnaces 132 came out
Vent one's spleen (comprising vinyl chloride, hydrogen chloride) 2.8MPa steam is produced by the byproduct steam heat exchanger 14, while by cracking gas
Temperature drops to 240 DEG C or so, and the 2.8MPa steam can be supplied directly to the EDC vaporizers 131 and be used to vaporize EDC,
It can be sent to out-of-bounds, steam pipe system can also be incorporated to, there is provided produce TOWER OUTLET IN VINYL CHLORIDE UNIT 2 and the resolving hydrochloric acid to the acetylene method
Device 3, supply and use for steam in whole production technology.
The VCM refined units 15 include hydrogen chloride column 151, the vinyl chloride tower being connected with the byproduct steam heat exchanger 14
152 and vinyl chloride stripper 153, the vinyl chloride stripper 153 be connected with first spherical tank 16.
The hydrogen chloride column 151 is delivered to after cracking gas cooling comprising vinyl chloride, hydrogen chloride, by hydrogen chloride from cracking gas
Separate, caused byproduct hydrogen chloride can be sent into the resolving hydrochloric acid device 3 according to lower procedure and store for producing
Technical hydrochloric acid, the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 can also be sent into and be used to produce vinyl chloride.From the hydrogen chloride column 151
Bottom of towe come out cracking gas successively after the vinyl chloride tower 152, vinyl chloride stripper 153 be made vinyl chloride, the chlorine
Ethene is sent into first spherical tank 16 and stored, and the vinyl chloride produced is used to polymerize or sell outside.
It should be noted that in order to improve raw material availability, production cost, the ethylene process life provided by the invention are reduced
Production TOWER OUTLET IN VINYL CHLORIDE UNIT 1 also includes EDC recovery units 17, the height that the EDC recovery units 17 flow out to the EDC high boiling towers 121
EDC in boiling thing and the cracking gas of the vinyl chloride tower 152 outflow is reclaimed, and to reduce loss of material, improves productivity ratio.
The EDC recovery units 17 include vacuum column 171, EDC high-boiling components storage tank 172 and light component chlorinator 173, institute
State vacuum column 171 to be located between the EDC high boiling towers 121 and the EDC high-boiling components storage tank 172, the light component chlorinator 173
Between the vinyl chloride tower 152 and the cracking EDC storage tanks 122.
The EDC high boiling towers 121 except dereaction generation high-boiling components (the boiling point impurity higher than EDC) side stripper is made afterwards
Smart EDC, high-boiling components reclaim EDC therein by the vacuum column 171 again from the bottom of towe outflow of the EDC high boiling towers 121, described
The EDC and the smart EDC of the output of EDC high boiling towers 121 that vacuum column 171 reclaims are stored to the cracking EDC storage tanks 122 after mixing
For cracking, remaining high-boiling components are sent into the EDC high-boiling components storage tank 172, are subsequently sent at the exhaust gas processing device 4
Reason.
Do not occur in cracking gas EDC from the vinyl chloride tower 152 of cracking reaction bottom of towe separate after be sent into described in
Light component chlorinator 173, EDC deliver to the cracking EDC storage tanks after chlorination reaction occurs in the light component chlorinator 173
122 recycle.
In the present embodiment, waste gas, waste liquid are equal caused by the whole course of reaction of the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1
It is sent into the exhaust gas processing device 4 and is used for burning disposal, specifically, to come from the high temperature straight for the tail gas including waste gas, waste liquid
Connect chlorination reactor 11, EDC rectification cells 12, EDC cracking unit 13, VCM refined units 15 and EDC recovery units 17.
In the present embodiment, because the reaction temperature of EDC cracking units 13 is up to 480 DEG C, and the VCM is passed through
Impurity is can remove after refined unit 15 is refined, so obtained hydrogen chloride is free of free chlorine and moisture, greatly reduces acetylene method
The possibility that generation chloroacetylene explodes in production vinyl chloride, and the corrosivity to equipment is greatly reduced, meet second
Alkynes method produces the quality requirement of vinyl chloride, therefore byproduct hydrogen chloride made from ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1 can be with
It is adjusted according to production needs, when acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 normally can produce vinyl chloride, the chlorination
Hydrogen can be sent into the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 and be used to produce vinyl chloride；When the ethylene process produces TOWER OUTLET IN VINYL CHLORIDE UNIT 1
The hydrogen chloride of offer is excessive or acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 can not receive ethylene process production chlorine during hydrogen chloride
Hydrogen chloride can be sent into the resolving hydrochloric acid device 3 and store for producing technical hydrochloric acid, the resolving hydrochloric acid dress by ethylene unit 1
Put 3 and be used as buffer unit absorbing hydrogen chloride, do not influence the normal production of the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1, it also avoid
To prevent byproduct hydrogen chloride from revealing, and neutralized with sodium hydroxide.
In addition, ethylene process production process for vinyl chloride provided by the invention is eliminated in conventional ethylene method production process for vinyl chloride
Oxi-chlorination unit, low temperature chlorination unit, reduce the part of pickling, alkali cleaning, greatly reduce waste water generation and
Technological process and the workload of waste water are handled, and reduces investment and the operating personnel of above each operation relevant device, is also made
It is easier to obtain overall operation.
Step 2: acetylene method produces vinyl chloride：
Hydrogen chloride made from acetylene made from calcium carbide and water and step 1 is prepared through acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2
Obtain vinyl chloride, when the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1 can not provide hydrogen chloride, the resolving hydrochloric acid device 3 is by hydrochloric acid
Parse hydrogen chloride and be supplied to the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2.
It is acetylene generator 21 that acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 includes being linked in sequence, acetylene cleaning unit 22, mixed
Clutch 23, dewatering unit 24, steam heater 25, VCM converters 26, the spherical tank 28 of VCM rectification cells 27 and second.
The acetylene generator 21 is used as acetylene reaction device, calcium carbide and water to be reacted life in the acetylene generator 21
Into acetylene, the blender 23 is sent into after the acetylene cleaning unit 22 removes the impurity such as the sulphur that may wherein contain, phosphorus,
It is interior according to 1 in the blender 23 with coming from obtained hydrogen chloride in step 1:After 1.05~1.1 ratio mixing, it is sent into
The dewatering unit 24 carries out dewater treatment, and the VCM converters 26 are sent into after the steam heater 25 heating vaporization,
The VCM converters 26 are vinyl chloride reaction unit, built with mercuric chloride catalyst, are reacted at a temperature of 150~170 DEG C
Generate thick vinyl chloride (Vinyl ChlorideMonomer, abbreviation VCM), thick VCM the VCM rectification cells 27 by the removal of mercury,
The impurity such as moisture and high-boiling and low-boiling components is removed after the processing such as cooling, depickling, rectifying of high low boiling tower, and vinyl chloride, the chloroethene is made
Alkene is sent into second spherical tank 28 and stored, and the vinyl chloride produced is used to polymerize or sell outside.
In the present embodiment, waste gas, waste liquid are equal caused by the whole course of reaction of the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2
It is sent into the exhaust gas processing device 4 and is used for vent gas treatment.
The acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 provided by the invention reduces in traditional acetylene method production process for vinyl chloride
Dry chlorine processing, waste chlorine absorb, chlorine compression and the operating unit such as hydrogen chloride synthesis, reduce the concentrated sulfuric acid and dry chlorine
Gas, sodium hydroxide absorb the step of waste chlorine and hydrogen and chlorine burning production hydrogen chloride, have eliminated hydrogen chloride synthetic furnace
Use so that thoroughly eliminate and prevent the possibility for causing vinyl chloride production to be exploded because of hydrogen chloride synthetic furnace.
Hydrogen chloride is preferably provided by ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1, because hydrogen chloride is single by EDC cracking
The refining and edulcoration of first 13 Pintsch process and the VCM refined units 15, after testing without free chlorine and moisture, greatly reduces second
When alkynes method produces vinyl chloride due in hydrogen chloride free chlorine it is exceeded, and the possibility exploded of generation chloroacetylene after acetylene mixing
Property, the safety coefficient of vinyl chloride production is greatly improved, also saves the installation cost of hydrochlorination, effectively reduces production
Cost.Therefore in production process, the production scale of the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 preferably produces according to the ethylene process
Depending on the scale of hydrogen chloride made from TOWER OUTLET IN VINYL CHLORIDE UNIT 1, i.e., hydrogen chloride made from described ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1 is enough
The acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 uses, it is not necessary to hydrogen chloride is additionally provided again, if the ethylene process produces vinyl chloride
When the hydrogen chloride that device 1 provides is insufficient or can not provide hydrogen chloride, the resolving hydrochloric acid device 3 goes out the resolving hydrochloric acid of storage
Hydrogen chloride, there is provided some or all hydrogen chloride give acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2.
The resolving hydrochloric acid device 3 include be connected two-by-two resolving hydrochloric acid unit 31, hydrochloric acid depth resolution unit 32 and
Demister 33.
The VCM refined units 15 of the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1 are connected with the resolving hydrochloric acid unit 31, by chlorine
Change hydrogen and be supplied to the resolving hydrochloric acid unit 31 to store；The resolving hydrochloric acid unit 31 and hydrochloric acid depth resolution unit 32 respectively will
Resolving hydrochloric acid goes out hydrogen chloride, butt hydrogen chloride is obtained after removing acid mist by the demister 33, by the butt hydrogen chloride
The blender 23 of the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 is supplied to, for producing vinyl chloride.
The resolving hydrochloric acid unit 31 includes hydrogen, H chloride absorber 311, the first hydrochloric acid tank 312, the hydrochloric acid being linked in sequence
Preheater 313, the first Analytic Tower 314, the first hydrogen chloride cooler 315 and the second hydrochloric acid tank 316.
The hydrogen, H chloride absorber 311 is connected with the VCM refined units 15 of ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1, is used
In absorbing the byproduct hydrogen chloride in the ethylene process production course of reaction of TOWER OUTLET IN VINYL CHLORIDE UNIT 1, add water to absorb and be changed into concentration and be about
31% hydrochloric acid, it is stored in first hydrochloric acid tank 312, the hydrochloric acid in first hydrochloric acid tank 312 can be used for outer
Sell, improve productive value, can be used for resolving hydrochloric acid.
Resolving hydrochloric acid is the inverse process of hydrogen chloride absorption, is dropped using the rise of solubility with temperature of the hydrogen chloride in water
It is low, hydrogen chloride gas is parsed in the concentrated hydrochloric acid for being about 31% from concentration.
Its detailed process is：When needing resolving hydrochloric acid, the hydrochloric acid in first hydrochloric acid tank 312 passes through the hydrochloric acid
First Analytic Tower 314 is sent into the heating of preheater 313, by resolving hydrochloric acid output hydrogen chloride gas, hydrogen chloride after steam heating
Gas obtains butt hydrogen chloride after first hydrogen chloride cooler 315 cooling through the demister 33, delivers to the second
Alkynes method produces TOWER OUTLET IN VINYL CHLORIDE UNIT 2, for producing vinyl chloride, parses the concentration of hydrochloric acid after hydrogen chloride and is reduced to 19~21% or so,
Second hydrochloric acid tank 316 is stored in, second hydrochloric acid tank 316 provides concentration after parsing for 19~21% hydrochloric acid
It is used for deep parse to the hydrochloric acid depth resolution unit 32.
The hydrochloric acid depth resolution unit 32 includes calcium chloride preparing tank 321, the jet mixer 322, second being linked in sequence
The hydrogen chloride cooler 324 of Analytic Tower 323 and second, second hydrochloric acid tank 316 are connected with the jet mixer 322,
For providing the hydrochloric acid after parsing.
The principle that hydrochloric acid parses deeply is：Calcium chloride solution is added into hydrochloric acid, calcium chloride utilizes chlorion as broken boiling agent
Common-ion effect, break hydrogen chloride and the water caused azeotropic balance under certain temperature, pressure, relative to hydrogen chloride gas
Partial pressure inhibit the partial pressure of vapor, by hydrogen chloride, deep analysis obtains high-purity hydrogen chloride gas from hydrochloric acid.
Its detailed process is：When needing hydrochloric acid to parse deeply, the salt after the parsing that second hydrochloric acid tank 316 provides
The calcium chloride solution that acid and the calcium chloride preparing tank 321 provide mixes in the jet mixer 322, is sent into described the
Two Analytic Towers 323, steam, which heats, causes hydrogen chloride to be flowed out from the tower top of second Analytic Tower 323, and the diluted acid of chloride containing calcium mixes
The bottom of towe that liquid is closed in second Analytic Tower 323 flows out, and hydrogen chloride gas is after second hydrogen chloride cooler 324 cooling
Butt hydrogen chloride is obtained through the demister 33, the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 is delivered to, for producing vinyl chloride.
In order to further improve the utilization rate of calcium chloride, material waste is reduced, the hydrochloric acid provided by the invention parses deeply
Unit 32 is also included located at the concentration tower 325 between second Analytic Tower 323 and the calcium chloride preparing tank 321, for inciting somebody to action
Calcium chloride concentrate, it is recycled to the calcium chloride preparing tank 321 and recycles, the steam condensate that the concentration tower 325 flows out is
The diluted acid waste water of concentration 1%, is emitted into and out-of-bounds handles.
Step 3: vent gas treatment：
Tail gas is supplied at the tail gas by the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2
Reason device 4 is used to handle, the exhaust gas processing device 4 by accessory substance steam be supplied to the ethylene process produce TOWER OUTLET IN VINYL CHLORIDE UNIT 1,
Acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2, resolving hydrochloric acid device 3, for providing heat.
The exhaust gas processing device 4 includes incinerator 41, byproduct steam tank 42, tail gas quenching tower 43, the tail being linked in sequence
Aspiration tower 44 and caustic wash tower 45.
The ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1, each device exhaust of acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 are supplied to described
Incinerator 41 is burnt, and 2.8Mpa is produced through the byproduct steam tank 42 by caused heat after nearly 1000 DEG C of high temperature incinerations
Byproduct steam, tail gas after burning is sent into the tail gas absorber 44, the tail by the tail gas quenching tower 43 cooling
Aspiration tower 44 carries out absorbing the high purity hydrochloric acid for producing by-product with desalted water or production water, and remaining tail gas passes through the alkali cleaning
Tower 45 neutralizes, emptying after controlling in neutral range.
In said process, the high purity hydrochloric acid can be stored in the first hydrochloric acid tank 312 of the resolving hydrochloric acid device 3,
For resolving hydrochloric acid and deep parsing.
The byproduct steam of the byproduct steam tank 42 of the exhaust gas processing device 4 and ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1
2.8Mpa byproduct steams can be incorporated to steam pipe system caused by heat exchanger 14, for steam in whole production technology supply and make
With, there is provided to ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2, resolving hydrochloric acid device 3, for carrying
Heating load, clean manufacturing is not only realized, and reached the economic effect that energy regenerating utilizes, reduce production cost.
Specifically, the 2.8Mpa byproduct steams are supplied to the EDC vaporizers of the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1
131, for providing heat, heat smart EDC.In order to protect the equipment of the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2, the present invention provides
2.8Mpa byproduct steams decompression is supplied to the acetylene method to produce by the temperature-decreased pressure reducer 5 for 1.27Mpa byproduct steams
The steam heater 25 of TOWER OUTLET IN VINYL CHLORIDE UNIT 2, for providing heat, heat the gaseous mixture of acetylene and hydrogen chloride.
In the resolving hydrochloric acid device 3 provided by the invention, the equipment majority using hydrochloric acid and hydrogen chloride as medium uses stone
Black equipment, the pressure of steam is too high to cause the life time of graphite to shorten and increase the operation difficulty of graphite equipment, in order to
Graphite equipment is protected, the 2.8Mpa byproduct steams are depressurized and are supplied to institute for 1.27Mpa byproduct steams by the temperature-decreased pressure reducer 5
Resolving hydrochloric acid device 3 is stated, specifically, the 1.27Mpa byproduct steams are supplied to the first of the resolving hydrochloric acid unit 31 to parse
Second Analytic Tower 323 of tower 314, the hydrochloric acid depth resolution unit 32, for providing heat, hydrogen chloride is parsed；Simultaneously
The 1.27Mpa byproduct steams can also be supplied to the calcium chloride preparing tank 321 of the hydrochloric acid depth resolution unit 32, for providing
Heat, configure calcium chloride solution.
The byproduct steam is applied to the resolving hydrochloric acid device 3, so as to avoid resolving hydrochloric acid in traditional handicraft, deep solution
Analysis will consume the drawbacks of a large amount of out-of-bounds steam, reduce production cost, resource can reasonable distribution, recycle, realize money
Source and the maximization of using energy source value.
The steam condensate tank 6 have collected the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1, acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT
Steam condensate in 2 courses of reaction, there is provided be used for hydrochloric acid to the resolving hydrochloric acid device 3 and parse deeply.Specifically, come from institute
State EDC vaporizers 131, the steam heater 25 of acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT 2 of ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT 1
Steam condensate collect in the steam condensate tank 6, the steam condensate is supplied to by the steam condensate tank 6
The calcium chloride preparing tank 321 of the resolving hydrochloric acid device 3, for the configuration of calcium chloride solution, so as to reduce making for out-of-bounds water
With effectively save water resource.The first Analytic Tower 314, the second Analytic Tower 323 of the resolving hydrochloric acid device 3 can also provide steaming
Vapour condensate liquid is used for the configuration of calcium chloride solution.
The raw material proportioning of each device and the output of product are as shown in table 1 in the present embodiment.
The output of the raw material proportioning of table 1 and product
Shown by above example, the Joint Production system and method for vinyl chloride provided by the invention is compared to tradition side
Method effectively utilizes the accessory substance of each device, mitigates the possibility exploded in production, reduces production cost, and production process more saves
Can be more environmentally friendly, realize the theory of recycling economy.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and this
Art personnel can design alternative embodiment without departing from the scope of the appended claims.In claim
In, any reference symbol 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.
Claims (10)
1. the Joint Production system of a kind of vinyl chloride, it is characterised in that it includes ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1), acetylene
Method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2), resolving hydrochloric acid device (3) and exhaust gas processing device (4), wherein,
The ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1) produces TOWER OUTLET IN VINYL CHLORIDE UNIT (2) and resolving hydrochloric acid device with acetylene method respectively
(3) connect, byproduct hydrogen chloride is supplied to the acetylene method production vinyl chloride dress by the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1)
Put (2) to be used to produce vinyl chloride, be supplied to the resolving hydrochloric acid device (3) to be used to store hydrochloric acid byproduct hydrogen chloride；
The acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2) is connected with the resolving hydrochloric acid device (3), the resolving hydrochloric acid device (3)
It is supplied to the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2) to be used to produce vinyl chloride in hydrogen chloride；
The exhaust gas processing device (4) produces TOWER OUTLET IN VINYL CHLORIDE UNIT with ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1), acetylene method respectively
(2) and resolving hydrochloric acid device (3) connection, the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1), acetylene method produce TOWER OUTLET IN VINYL CHLORIDE UNIT
(2) it is supplied to the exhaust gas processing device (4) to be used to handle in tail gas, the exhaust gas processing device (4) carries accessory substance steam
The resolving hydrochloric acid device (3) is supplied, for providing heat.
2. the Joint Production system of vinyl chloride according to claim 1, it is characterised in that resolving hydrochloric acid device (3) bag
Include the resolving hydrochloric acid unit (31) being connected and hydrochloric acid depth resolution unit (32), the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1) with
Resolving hydrochloric acid unit (31) connection, hydrogen chloride is supplied to the resolving hydrochloric acid unit (31) to store, the salt acidolysis
Analysis unit (31) and hydrochloric acid depth resolution unit (32) are connected with acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2) respectively, by salt acidolysis
Separate out hydrogen chloride and be supplied to the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2), for producing vinyl chloride.
3. the Joint Production system of vinyl chloride according to claim 2, it is characterised in that resolving hydrochloric acid unit (31) bag
Include the hydrogen, H chloride absorber (311) being linked in sequence, the first hydrochloric acid tank (312), hydrochloric acid preheater (313), the first Analytic Tower
(314), the first hydrogen chloride cooler (315) and the second hydrochloric acid tank (316), the hydrogen, H chloride absorber (311) with it is described
Hydrogen chloride after parsing is supplied to institute by ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1) connection, first hydrogen chloride cooler (315)
Acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2) is stated, for producing vinyl chloride, second hydrochloric acid tank (316) is by the hydrochloric acid after parsing
It is supplied to the hydrochloric acid depth resolution unit (32) to be used for deep parsing, accessory substance steam is supplied to by the exhaust gas processing device (4)
First Analytic Tower (314), for providing heat.
4. the Joint Production system of vinyl chloride according to claim 3, it is characterised in that the hydrochloric acid depth resolution unit (32)
Including calcium chloride preparing tank (321), jet mixer (322), the second Analytic Tower (323) and the second chlorination being linked in sequence
Hydrogen cooler (324), second hydrochloric acid tank (316) are connected with the jet mixer (322), after providing parsing
Hydrogen chloride after deep parse is supplied to the acetylene method production vinyl chloride to fill by hydrochloric acid, second hydrogen chloride cooler (324)
(2) are put, for producing vinyl chloride；Accessory substance steam is supplied to the calcium chloride preparing tank by the exhaust gas processing device (4)
(321) with second Analytic Tower (323), for providing heat.
5. the Joint Production system of vinyl chloride according to claim 4, it is characterised in that the hydrochloric acid depth resolution unit (32)
Also include located at the concentration tower (325) between second Analytic Tower (323) and the calcium chloride preparing tank (321), for inciting somebody to action
Calcium chloride is recycled to the calcium chloride preparing tank (321) and recycled.
6. the Joint Production system of vinyl chloride according to claim 1, it is characterised in that the Joint Production system of the vinyl chloride
System also includes steam condensate tank (6), the steam condensate tank (6) produced respectively with the ethylene process TOWER OUTLET IN VINYL CHLORIDE UNIT (1),
Acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2) connection, is supplied to the resolving hydrochloric acid device (3) to be used for the steam condensate in reaction
Hydrochloric acid parses deeply.
7. the Joint Production system of vinyl chloride according to claim 1, it is characterised in that exhaust gas processing device (4) bag
Include the incinerator (41) being linked in sequence, byproduct steam tank (42), tail gas quenching tower (43), tail gas absorber (44) and caustic wash tower
(45), the tail gas of the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1) is supplied to the incinerator (41) to burn, the byproduct steam tank
(42) steam is provided to ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1), acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2), resolving hydrochloric acid dress
Put (3).
8. the Joint Production system of vinyl chloride according to claim 1, it is characterised in that the Joint Production system of the vinyl chloride
System also includes the temperature-decreased pressure reducer (5) that is connected with the exhaust gas processing device (4), and the temperature-decreased pressure reducer (5) is by the tail gas
The resolving hydrochloric acid device (3) is supplied to after the accessory substance steam pressure-reducing of processing unit (4).
9. a kind of combine production method of vinyl chloride, it is characterised in that comprise the following steps that：
1) ethene and chlorine produce TOWER OUTLET IN VINYL CHLORIDE UNIT (1) through ethylene process and vinyl chloride are prepared, and byproduct hydrogen chloride is supplied to institute
Acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2) is stated, the hydrogen chloride that the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1) provides is excessive or described
Acetylene method produces the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1) when TOWER OUTLET IN VINYL CHLORIDE UNIT (2) can not receive hydrogen chloride and carries hydrogen chloride
Supply resolving hydrochloric acid device (3)；
2) acetylene made from calcium carbide and water and hydrogen chloride produce TOWER OUTLET IN VINYL CHLORIDE UNIT (2) through acetylene method and vinyl chloride are prepared, institute
When hydrogen chloride can not be provided by stating ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1), resolving hydrochloric acid is gone out chlorination by the resolving hydrochloric acid device (3)
Hydrogen is supplied to the acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2)；
3) tail gas is supplied to the tail gas by the ethylene process production TOWER OUTLET IN VINYL CHLORIDE UNIT (1), acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2)
Processing unit (4) is used to handle, and accessory substance steam is supplied to the ethylene process to produce vinyl chloride by the exhaust gas processing device (4)
Device (1), acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2), resolving hydrochloric acid device (3), for providing heat.
10. the combine production method of vinyl chloride according to claim 9, it is characterised in that the ethylene process produces vinyl chloride
Steam condensate in reaction is supplied to the resolving hydrochloric acid device (3) by device (1), acetylene method production TOWER OUTLET IN VINYL CHLORIDE UNIT (2)
Parsed deeply for hydrochloric acid.
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| CN108325541A (en) * | 2018-03-26 | 2018-07-27 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | The activation system and method for calcium carbide process PVC production of resins catalyst |
| CN111921347A (en) * | 2020-08-11 | 2020-11-13 | 中国成达工程有限公司 | System and method for drying chloroethylene raw material gas by acetylene method |
| CN112028737A (en) * | 2020-09-14 | 2020-12-04 | 河南神马氯碱发展有限责任公司 | Method and device for preparing chloroethylene by treating bis (trichloromethyl) carbonate production tail gas through combustion method |
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| CN114163299A (en) * | 2021-10-23 | 2022-03-11 | 新疆天业（集团）有限公司 | Production system and method for co-production of polyvinyl chloride by coal-based ethylene method and calcium carbide acetylene method |
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| CN108325541A (en) * | 2018-03-26 | 2018-07-27 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | The activation system and method for calcium carbide process PVC production of resins catalyst |
| CN108325541B (en) * | 2018-03-26 | 2023-12-05 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | System and method for activating catalyst for calcium carbide PVC resin production |
| CN108314603A (en) * | 2018-03-29 | 2018-07-24 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of hydrochloric acid full stripping devices and methods therefor |
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| CN112028737A (en) * | 2020-09-14 | 2020-12-04 | 河南神马氯碱发展有限责任公司 | Method and device for preparing chloroethylene by treating bis (trichloromethyl) carbonate production tail gas through combustion method |
| CN112028737B (en) * | 2020-09-14 | 2023-03-31 | 河南神马氯碱发展有限责任公司 | Method and device for preparing chloroethylene by treating bis (trichloromethyl) carbonate production tail gas through combustion method |
| CN112374962A (en) * | 2020-10-13 | 2021-02-19 | 新疆中泰化学股份有限公司 | Method and device for efficiently applying low-mercury catalyst |
| CN114163299A (en) * | 2021-10-23 | 2022-03-11 | 新疆天业（集团）有限公司 | Production system and method for co-production of polyvinyl chloride by coal-based ethylene method and calcium carbide acetylene method |
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