JPS5988434A - Manufacture of vinyl chloride - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-catalyzed gas phase process, and more particularly to a process for producing vinyl chloride. Vinyl chloride is one of the most important monomers used in the production of various polymeric materials for the production of plastics, synthetic fibers, varnishes, etc.
It is one.

G2H under atmospheric pressure or overpressure in liquid or gas phase
2:HO1=1:capacity ratio of 1 to 1.3 and 8
At temperatures in the range from 0 to 200 C, in the presence of mercury chloride deposited on the catalyst-support in an amount of 10 to 13%, with or without the addition of chlorides of other metals, such as titanium, vanadium, lanthanum. A process for producing vinyl chloride by hydrochlorinating acetylene with hydrogen chloride is known in the art (FRG (Federal Republic of Germany) Patent No. 1.040.535 (1960)).
, Union of Soviet Socialist Republics Inventor Certificate No. 564586
No., (Jt, oo7021106. Published June 1, 1976).

In addition, the temperature within the range of 220~240C under atmospheric pressure, 0
．． Vinyl chloride is produced by hydrochlorination of acetylene with hydrogen chloride in the presence of a mercury catalyst with the addition of lanthanum chloride at a contact time of 5 to 1 seconds and a molar ratio of acetylene to hydrogen chloride of 1:1 to 1.3. Methods for
7a21106.1974# reference).

These prior art techniques have drawbacks due to the high toxicity and volatility of the mercury catalysts used, and the need to use capture threads to render harmless the mercury chloride entrained in the reaction gas and the ejected mercury vapor. be. The disadvantages of prior art methods are also illustrated by the complete purification and drying of the starting materials to prevent deactivation of the catalyst. The catalyst used is
There is also rapid deactivation as a result of entrainment of the active components in the reaction gas (thus, the starting catalyst contains 16.4% H,Ot2 on activated coal, while the spent catalyst contains 4.6% H,Ot2 on activated coal). H
gQ Z2 ). All of the above proves the design of a complex method and the equipment used in this method.

The present invention provides a process for the production of vinyl chloride consisting of hydrochlorination of acetylene with chloride water, which makes it possible to avoid the use of mercury catalysts and to simplify the process design and equipment used. The objective is to provide the conditions for a suitable method.

This aim is to demonstrate that the process according to the invention carries out the hydrochlorination in the presence of chlorine in an amount of 0.6 to 3% by volume of the reaction mixture.
Acetylene is smeared with hydrogen chloride at elevated temperatures and under atmospheric pressure, characterized in that it is carried out at a temperature in the range of ~650 C, a molar ratio of acetylene to hydrogen chloride of 1:2 to 10 and a contact time of 1 to 12 seconds. This is achieved by consisting of hydrochlorination.

The process according to the invention avoids the use of mercury catalysts and simplifies the process design and equipment (eliminating the production of catalysts, equipment for capturing mercury compounds from the reaction gas and for purifying the reaction gas). (avoiding the use of equipment for cleaning and drying starting reaction components).

According to the method of the invention, in addition to vinyl chloride, 1.2-
Dichloroethylenes (mixture of cis and trans isomers) and small amounts of 1. 1. 2-trichloroethane can be obtained, which is formed during chlorination.

These products are useful as solvents in industry.

Vinyl chloride, 1゜2-dichloroethylene and 1,1
．． 2-) Separation of IJ dichlorothanes is easily carried out because their boiling points are well apart.

In the process according to the invention, the formation of the desired product vinyl chloride takes place in the presence of chlorine, which serves as an initiator in the process of hydrochlorination of acetylene, according to a radical linkage mechanism.

When chlorine is used in an amount less than 0.6% by volume of the reaction mixture (i.e. the mixture of acetylene and hydrogen chloride),
Acetylene cannot be converted sufficiently. 6% capacity
When more than 1,2-dichloroethylenes are used, 1,2-dichloroethylenes are mainly formed.

If the hydrochlorination process is carried out at temperatures below 150C, the conversion of acetylene is low, while temperatures of this process above 650C are unsuitable due to undesirable side reactions (more advanced hydrochlorination). The above specified ratios of the starting components in the hydrochlorination process according to the invention optimize the yield of vinyl chloride and complete the conversion of acetylene. When the molar ratio of acetylene to hydrogen chloride is lower than 1:2,
The conversion rate of acetylene cannot be optimized, while 1
: Higher than 1C, it cannot have any appreciable effect on the acetylene conversion and is therefore economically inefficient.

In the hydrochlorination process, contact times of less than 1 second result in low conversions of acetylene, whereas contact times of more than 12 seconds cause undesirable side effects.

In order to extend the range of raw materials as well as to ensure the hazard-free nature of the process, the volume ratio of acetylene to steam is maintained in the range 189-38 during the hydrochlorination.
It is suitable to introduce hydrogen chloride into the composition of the vapor-gas mixture obtained by evaporation of 1e-30% hydrochloric acid. In this case, the reaction mixture consists of acetylene, hydrogen chloride and water vapor, which serves to eliminate the diluent and ensures the safety of the process against explosion. As mentioned above, chlorine is used at 0.6-6% by volume of the reaction mixture (mixture of ethylene, hydrogen chloride and steam).

The aforementioned embodiment of the process according to the invention also solves the problem of utilizing hydrochloric acid, which is one of the by-products of chloro-organic synthesis.

Diluting the reaction mixture with steam at an acetylene to steam volume ratio greater than 1868 and less than 1:9;
Optimal yields of vinyl chloride in the hydrochlorination process are not guaranteed.

The use of salt additives in the aforementioned concentrations ensures the required ratio of hydrogen chloride to acetylene in the reaction mixture as well as the required dilution of the reaction mixture with water vapor.

In order to increase the conversion of acetylene, it is suitable to carry out the hydrochlorination in the presence of oxygen. When so carried out, oxygen is added to the process in an amount of 0.05 to 0.5% by volume of the mixture of acetylene, hydrogen chloride and chlorine, if the process of hydrochlorination of acetylene is carried out in the absence of water vapor. It is appropriate to introduce When carrying out this process in the presence of water vapor, oxygen can be replaced by acetylene, hydrogen chloride,
The mixture of chlorine and water vapor is introduced in an amount of 0.02-0.3% by volume.

Using oxygen in amounts less than 0.05% by volume of a mixture of acetylene, hydrogen chloride and chlorine does not substantially increase the degree of conversion of acetylene, but adding oxygen in amounts greater than 0.5% by volume desirably oxidative side reactions occur and reduce the selectivity of the process.

The same reasoning applies to the selection of 0.02 to 0.6% by volume of oxygen, calculated for a mixture of acetylene, hydrogen chloride, chlorine and water vapor.

Adding oxygen to this process within the range specified above increases the acetylene conversion to 70-80%. Therefore, the yield of vinyl chloride is 70% based on the reacted ethylene.
Equal to ~80%.

The process for producing vinyl chloride of the present invention is carried out in a tubular reactor protected against direct flow light.

Acetylene and hydrogen chloride are mixed in the required ratio in a mixer and the resulting mixture is mixed with calculated amounts of chlorine and oxygen (when the process is carried out in the presence of oxygen) before feeding to the reactor. do.

The mixture thus prepared is passed through a reactor under atmospheric pressure and at a predetermined temperature and contact time.

The reaction product and unreacted reaction components are cooled to the condensation temperature of 1,2-dichloroethylenes at the outlet of the reactor to form liquid products (1,2-dichloroethylenes and 1,2-dichloroethylenes).
1.2-) Lichloroethanes). The gaseous products - acetylene and biraloo chloride are washed to remove excess hydrogen chloride and chlorine. The liquid and gaseous products are analyzed by chromatography. Vinyl chloride is recovered from its mixture with acetylene by rectification.

When hydrogen chloride in a steam-gas mixture prepared by evaporation of 10-30% hydrochloric acid is used for the hydrochlorination of acetylene, said hydrochloric acid is evaporated in a mixer at a temperature of 120-130C. After introducing predetermined amounts of acetylene, chlorine and oxygen (when carrying out the process of hydrochlorination in the presence of oxygen) into the resulting steam-gas mixture of hydrogen chloride and water vapor, this mixture is passed into a reactor. supply to

At the outlet of the reactor, 1,2-dichloroethylenes,
1,1.2-) Dichloroethane and hydrochloric acid vapors are condensed in a trap. The organic layer was separated from the hydrochloric acid, washed with water,
After drying, it is analyzed by lipomadography. Gaseous vinyl chloride and acetylene are separated as described above.

In order that the invention may be better understood, the following examples illustrate certain embodiments of the invention. In all examples, the yield of the product obtained is expressed as the percentage of acetylene reacted.

Example 1 2, Ot (0,089 mol) of acetylene 8.06
(0156 mol) of hydrogen chloride in a molar ratio of 1:4 was added to this mixture of acetylene and hydrogen chloride at a temperature of 360C and 8.5% by volume of chlorine under atmospheric pressure. One hour was passed through the reactor at a contact time of seconds.

After condensation and separation from the gaseous products, 0 in the form of condensate
．． 161 (0,007 mol) of 1,2-dichloroethylenes are obtained.

Gaseous vinyl chloride and acetylene are washed with alkali to remove excess hydrogen chloride and chlorine, and then separated by rectification. In this way, 0.9061 (0.04 mol) of vinyl chloride and 0.961 (0.042 mol) of acetylene are obtained.

The conversion rate of acetylene is 52%.

The yield of vinyl m-ide is based on the reacted acetylene:
It is 85.1%.

1,2-dichloroethylenes is 14.9% based on reacted acetylene.

Example 2 2t (0,089 mol) of acetylene and 102(0
, 046 mol) with hydrogen chloride in a molar ratio of 1:5, with the addition of chlorine in an amount of 3.0% by volume of this mixture of acetylene and hydrogen chloride, under atmospheric pressure at a temperature of 150 C and 12 Pass through the reactor for 1 hour at a contact time of seconds.

As a result, a mixture of the following composition is obtained: 1.441
(0,064 mol) of acetylene, 0.31 t (0,0
14 mol) of vinyl chloride, 0.25 t (0,011 mol) of 1,2-dichloroethylenes.

The conversion rate of acetylene is 28%.

The yield of vinyl chloride was 55.3%.

The yield of 1,2-dichloroethylenes is 44.7%.

Example 3 0.91 (0.04 mol) of acetylene and 9t (0.4 mol)
4 mol) of hydrogen chloride in a molar ratio of 1S10,
To this mixture of acetylene and hydrogen chloride was added chlorine in an amount of 1.2% each, and at a temperature of 3000 °C and 1.2% under atmospheric pressure.
．． Pass through the reactor for 1 hour at a contact time of 0 seconds.

As a result, a mixture of the following composition is obtained = 0,56 t
(0,025 mol) of acetylene, 0.28 t(0,
(] 113 mol vinyl chloride, 0.05 t (0,00
2 mol) of 1,2-dichloroethylenes.

The conversion rate of acetylene is 67%.

The yield of vinyl chloride is 85%.

The yield of 1,2-dichloroethylenes is 15%.

Example 4 2, OL (0,089 mol) of acetylene and 161
(0,714 mol) of hydrogen chloride in a molar ratio of 8 to 1, with the addition of chlorine in an amount of 0.3% by volume of this mixture of acetylene and hydrogen chloride, at a temperature of 65 DC and under atmospheric pressure. Pass through the reactor for 1 hour at a contact time of 4.6 seconds.

As a result, a mixture with the following composition is obtained: 1.4t (0
,063 mol) of acetylene, 0.541 (0, p 2
4 mol) of vinyl chloride, 0.06.2 t (0,002
7 mol) of 1,2-dichloroethylenes.

The conversion rate of acetylene is 30%.

The yield of vinyl chloride is 90%.

The yield of 1,2-dichloroethylenes is 10%.

Example 5 2.04 (0,089 mol) of acetylene and 4. Ot(
0,178 mol) of hydrogen chloride in a molar ratio of 1:2, with the addition of chlorine in an amount of 2.5% by volume of this mixture of acetylene and hydrogen chloride, at a temperature of 250 C and under atmospheric pressure. Pass through the reactor for 1 hour at a contact time of 97 seconds.

As a result, a mixture of the following composition is obtained: 1.22t
(D, 0545 mol) of acetylene, 0.64 tC
o, 028.5 moles) of vinyl chloride, 0.141 (0
, 0' 65 mol) of 1,2-dichloroethylene.

The conversion rate of acetylene is 39%.

The yield of vinyl chloride is 82.0%.

The yield of 1,2-dichloroethylene is 18. , (l]
%.

Example 6 0,61 (0,027 mol) of acetylene was added to 30%
of hydrogen chloride and water vapor prepared by evaporation of 19 ml of hydrochloric acid. The volume ratio of acetylene to steam is equal to 1:62, while the molar ratio of acetylene to hydrogen chloride is 1 nea.

To this obtained mixture, chlorine was added in an amount of 0.85% by volume of the mixture of acetylene, hydrogen chloride and steam and passed through the reactor for 1 hour at a temperature of 6000 °C and a contact time of 4.7 seconds under atmospheric pressure. let

After condensation, separation from hydrochloric acid and gaseous products (acetylene and vinyl chloride) and drying, 0.145
A liquid organic layer is obtained consisting of 1,2-dichloroethylcines in an amount of t (0,0065 mol).

When gaseous vinyl chloride and acetylene are rectified, 0.
1481 (0,0066 mol) of vinyl chloride and 0.3
1 (0,015 mol) of acetylene are obtained.

The conversion rate of acetylene is 491%.

The yield of vinyl chloride is 50.3%.

The yield of 1,2-dichloroethylenes was 497%.

Example 7 0,61 (0,027 mol) of acetylene was added to 20%
of hydrochloric acid is mixed with a vapor-gas mixture of hydrogen chloride and water vapor prepared by evaporation of 10 ml of hydrochloric acid. The volume ratio of acetylene to steam is 1:18, while the molar ratio of acetylene to hydrogen chloride is 1:2.

To the resulting mixture, chlorine was added in an amount of 3.0% (based on the volume of the mixture of acetylene, hydrogen chloride and steam) and it was introduced into the reactor under atmospheric pressure at a temperature of 150C and a contact time of 12 seconds. pass through.

The product is separated as described in Example 6.

After separating the liquid and gaseous products and drying them, 0.0521 (0,002 moles) of vinyl chloride,
0.4381 (0.0196 moles) of acetylene and 0.4381 (0.0196 moles) of acetylene and 0.4381 (0.0196 moles) of acetylene. 1,2- of i 11 (0,OD 5moA/)
Dichloroethylenes are obtained.

The conversion rate of acetylene is 2zO%.

The yield of vinyl chloride is 32.0%.

The yield of 1,2-dichloroethylenes was 68.0%.

Example 8 0,31 (0,0164 mol) of acetylene was added to 10
10 ml of % hydrochloric acid are mixed with a vapor-gas mixture of hydrogen chloride and water vapor prepared by evaporation.

The volume ratio of acetylene to steam is 1:68, and the molar ratio of acetylene to hydrogen chloride is 1:2. Chlorine was added to the resulting mixture in an amount of 0.8% (based on the volume of the mixture of acetylene, hydrogen chloride and steam) and it was introduced into the reactor under atmospheric pressure at a temperature of 275C and 9%.
Pass for 1 hour at a contact time of 1 second.

After separation of the products, the following is obtained:
00731 (0,003 mol), acetyleneroethylenes-0,0701 (0,003 mol).

The conversion rate of acetylene is 418%.

The yield of vinyl chloride is 5'1.2%.

The yield of 1,2-dichloroethylenes is 48.8%.

Example 9 0.6 A (0,027 mol) of acetylene was added to 20
Mix with a vapor-gas mixture of hydrogen chloride and water vapor prepared by evaporation of 19 m.l of % hydrochloric acid. The volume ratio of acetylene to steam is 1:34.5, and the molar ratio of acetylene to hydrogen chloride is 1:4. Chlorine was added to the resulting mixture in an amount of 0.30% (based on the volume of the mixture of acetylene, hydrogen chloride and steam) and it was added to the reactor under atmospheric pressure at a temperature of 65 DC and 1.0 seconds. Pass for 1 hour in contact time.

After separation of the products, the following is obtained: vinyl chloride, 104 t (0,0047 mol), acetylene-
'0.425t (0,0188 mol), 1,2-dichloroethylene-0,0731 (0,0052 mol).

The conversion rate of acetylene is 295%.

The yield of vinyl chloride is 590%.

The yield of 1,2-dichloroethylenes was 41.0%.

Example 10 1.1 t (0,049 mol) of acetylene was added to 60%
of hydrogen chloride and water vapor prepared by evaporation of hydrochloric acid. The volume ratio of acetylene to steam is 1:9, and the molar ratio of acetylene to hydrogen chloride is 1:2. 1.85% to the resulting mixture of chlorine
(based on the volume of the mixture of acetylene, hydrogen chloride and water vapor) and put it into the reactor under atmospheric pressure at a temperature of 2500 °C and a contact time of 8.5 seconds.
Let time pass.

After separation of the product, the following is obtained: Vinyl chloride, 274/1. (0,011 mol), acetylene-0,
6351 (0,028 mol), 1,2-dichloroethylene-〇, 218t (0,001 mol).

The conversion rate of acetylene is 42.3%.

The yield of vinyl chloride is 55.1%.

The yield of 1,2-dichloroethylenes was 46.9%.

Example 11 The process is carried out as in Example 2, but oxygen is added to the reaction mixture in an amount of 0.5% by volume of said reaction mixture of acetylene, hydrogen chloride, chlorine and steam.

After separation of the products, the following is obtained:
0471 (0,021 mol), acetylene-1, 251
(0,56 mol), total amount of 1,2-dichloroethylenes and 1,1,2-trichloroethane - 0,27 t (
0,012 mol).

The conversion rate of acetylene is 674%.

The yield of vinyl chloride is 63.2%.

1.2-dichloroethylenes and 1. 1. The total yield of 2-trichloroethane is 56.8%.

Example 12 The process is carried out as in Example 3, but oxygen is added to the reaction mixture in an amount of 0.15% by volume of the reaction mixture of acetylene, hydrogen chloride, chlorine and steam.

After separation of the products, the following is obtained:
0631 (0,028 mol), acetylene-0, 121
(0,005 mol), total amount of 1,2-dichloroethylenes and 1,1,2-trichloroethane -0,151
(0,007 mol).

The conversion rate of acetylene is 86.3%.

The yield of vinyl chloride is 80.7%.

The total yield of 1,2-dichloroethylenes and 1,1,2-trichloroethane was 15.3%.

Example 13 The process is carried out as in Example 4, but oxygen is added to the reaction mixture in an amount of 0.2% by volume of said mixture of acetylene, hydrogen chloride, chlorine and steam.

After separation of the products, the following is obtained: vinyl chloride 1
．． 871 (0,039 mol), acetylene-1, OL
(0,045 mol), total amount of 1,2-dichloroethylenes and 1,1.2-)riftetraloethane -0,1
31 (0,006 mol).

The conversion rate of acetylene is 50.0%.

The yield of vinyl chloride is 86.6%.

The total yield of 1,2-dichloroethylenes and 1,1,2-trichloroethane is 13.4%.

Example 14 The process is carried out as in Example 5, but oxygen is added to the reaction mixture in an amount of 0.3% by volume of said mixture of acetylene, hydrogen chloride, chlorine and steam.

After separation of the products, the following is obtained:
0781 (0,055 mol), acetylene-1, 041
(0,046 mo/I/), total of 1,2-dichloroethylenes and 1,1.2-)lichloroethane! -0,
18t (0,008moA).

The conversion rate of acetylene was 48.0%.

The yield of vinyl chloride is 81.5%.

The total yield of 1,2-dichloroethylenes and 1,1,2-trichloroethane is 18.4%.

Example 15 The process is carried out as in Example 12, but oxygen is added to the reaction mixture in an amount of 0.05% by volume (mixture of acetylene, hydrogen chloride, chlorine and steam) and the process is carried out at 26 DC It will be carried out.

After separation of the products, the following is obtained: vinyl chloride 0
．． 5Bt (0,017 mol), acetylene-〇, 41
t (0,018 mol), 1,2-dichloroethylenes and 1. 1. Total amount of 2-trichloroethane - 〇, 11 t (0,005 mol).

The conversion rate of acetylene is 54.5%.

The yield of vinyl chloride is 717%.

1.2-dichloroethylenes and j, 1. 2-
The total yield of trichloroethane is 22.5%.

The process of Example 1 is carried out as in Example B, but oxygen is added to the reaction vapor-gas mixture in an amount of 0.17% by volume of the mixture of acetylene, hydrogen chloride, chlorine and steam.

After separation of the products, the following is obtained: vinyl chloride 0
．． 3024' (0,0135 mol), acetylene-0,
181 (0,008 mo/I/), total amount of 1,2-dichloroethylenes and 1,1,2-)lichloroethane -〇, 118 t (0,0052 mole).

The conversion rate of acetylene is 70%.

The yield of vinyl chloride is 72.0%.

The total yield of 1,2-dichloroethylenes and 1,1,2-trichloroethane is 28%.

Example 17 The process is carried out as in Example 7, but oxygen is added to the reaction vapor-gas mixture in an amount of 0.3% by volume of the mixture of acetylene, hydrogen chloride, chlorine and steam.

After separation of the products, the following is obtained: vinyl chloride, 115t (0,005 mol), acetylene-0,37
61 (0,017 mol), total amount of 1,2-dichloroethylenes and L 11 2- ) liqueoo*ethane - 0,109 t (0,0,048 mol).

The conversion rate of acetylene is 373%.

The yield of vinyl chloride is 51.2%.

Total yield Lt of 1.2-dichloroethylenes and 1,1.2-trichloroethane, 48. It is a%.

Example 18 The process is carried out as in Example 8, but oxygen is added to the reaction vapor-gas mixture in an amount of 0.1% by volume of the mixture of acetylene, hydrogen chloride, salt clot and steam.

After separation of the products, the following is obtained: vinyl chloride 0
．． 1441 (0,0064 mol), acetylene-0,
0921, (0,004 mol), total amount of 1,2-dichloroethylenes and 1,1.2-)licrogastric loethane -〇, 064 t (D, OO' 28 mol).

The conversion rate of acetylene is 693%.

The yield of cyclized vinyl is 694%.

The total yield of 1,2-dichloroethylenes and 1,1,2-trichloroethane is 30.6%.

Example 19 The process is carried out as in Example 9, but oxygen is added to the reaction vapor-gas mixture in an amount of 0.02% by volume of the mixture of acetylene, hydrogen chloride, chlorine and steam.

After layer separation of the product, the following is obtained: vinyl chloride 0
．． 221 (C1,098 mol), acetylene-0,2
91, (0,013 mol), total amount of 1,2-dichloroethylenes and 1,1,2-trichloroethane -0,
091 (0,004 mol).

The conversion rate of acetylene is 51.2%.

The yield of vinyl chloride is 70.4%.

The total yield of 1,2-dichloroethylenes and 1,1,2=trichloroethane is 296%.

Example 20 The process is carried out as in Example 10, but arsenic is added to the reaction vapor-gas mixture in an amount of 0.2% by volume of the mixture of acetylene, hydrogen cyclide, chlorine and steam.

After separation of the products, the following is obtained: vinyl chloride, 453 t (0,020 mol), acetylene-0
,44A (0,0196 mol), total amount of 1,2-dichloroethylenes and 1,1,2-trichloroethane -0,2071 (0,0092 mol/I/).

The conversion rate of acetylene is 750.1%.

The yield of vinyl chloride is 6B, 7%.

The total yield of 1,2-dichloroethylenes and 1,1,2-trichloroethane is 31.3%.

The following margin continues from page 1 0 Inventor Grigory Alekseevich Oleinik USSR Polislav Lupovskoy Ovrastei Uritsa Gorkogo 20/42 0 Inventor Yuri Anisimovich Treger Soviet Union Moscow B-Cherkizovskaya・Ulitsa 12 Corgis 1 Kwarchila 81 0 Inventor Vitaliy Feodosievich Kochubei Soviet Union Polislav Lupovskoy Ofrastei Ulitsa Lenina 12. /47 0 Inventor Nilin Veniaminovich Sonin Soviet Union Moscow Planernaya Ulinoa 12 Korpus 3 Kwarchila 143 0 Inventor Igor Fedorovich Pimenola Soviet Union Moscow Ulitsa Glyasova 81 Kwarchila 71 0 Applicant Galina Dmitrievna Ivanik USSR Polislav Lupovskoy Ofrastei Ulitsa Shorsa 31151 ■Applicant Olga Iosifovna Gentosh USSR Polislav Lupovskoy Ofrastei Ulitsa Shorsa 31/39 0 Applicant Grigori Alekseevich Oleinik USSR Polislav Lupobskoi・Ofrastei Ulitsa Gorkogo 20/42 ■Applicant Yuri Anisimovich Treger, Soviet Union Moscow B. Czechia Pubskaya Ulitsa 12 Korps 1 Kwarchyla 81 ■Applicant Vitaliy Feodosievich Kochubei Soviet Union Polislav Lupovskoi Ofrastai・Ulitsa Lenina 12/47 ■Applicant Nilin Veniaminovich Sonin Soviet Union Moscow Planernaya Ulinoa 12 Korps 3 Kwarchila 143 ■Applicant Igor Fedorovich Pimenov Soviet Union Moscow Ulitsa Glyanova 81 Kwarchila 71

Claims (1)

Claims: 1. The hydrochlorination is carried out in the presence of chlorine in an amount of 0.6 to 3% by volume of the reaction mixture, at a temperature in the range of 150 to 350 C, 1. A process for producing vinyl chloride by hydrochlorination of acetylene with hydrogen chloride at elevated temperature and atmospheric pressure, characterized in that it is carried out at a molar ratio of hydrogen and a contact time of 1 to 1 s. Introducing hydrogen chloride into the reaction in a vapor-gas mixture obtained by evaporation of 10-30% hydrochloric acid, such that the volume ratio of acetylene to steam during the hydrochlorination is equal to 1:9-38. 3. The hydrochlorination is carried out in the presence of oxygen in an amount of 0.05 to 0.5% by volume of a mixture of acetylene, hydrogen chloride and chlorine. 4. The method according to claim 1, characterized in that the hydrochlorination is carried out in the presence of 0.02 to 0.3% by volume of a mixture of acetylene, hydrogen chloride, chlorine and water vapor. 3. A method according to claim 2, characterized in that it is carried out in the presence of oxygen.