Method and system for synthesizing hydrogen chloride with low moisture content
A synthesis method and hydrogen chloride technology, applied in the direction of chlorine/hydrogen chloride, preparation of hydrogen chloride, purification of chlorine/hydrogen chloride, etc., can solve the problems of reducing water content in production, high water content in hydrogen chloride gas supply products, etc., to eliminate sources and reduce inappropriate proportioning Accurate, reduce the effect of interference
Pending Publication Date: 2019-07-26
TANGSHAN SANYOU CHLOR ALKALI
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Problems solved by technology
[0004] The present invention aims to solve the problem of high water content in the supplied gas and the high water content of the obtained product in the production process of hydrogen chloride synthesis, and proposes a solution that can effectively reduce the water content in production
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[0024] The design concept of the present invention is to treat chlorine and hydrogen before the hydrogen and chlorine gas merge into the main pipe, remove water and oxygen in the hydrogen gas, remove oxygen in the chlorine gas, improve the purity of the hydrogen and chlorine gas supplied to the synthesis furnace, and achieve control of the combustion of the synthesis furnace The problem of the water content of the prepared hydrogen chloride gas can also be well controlled.
[0025] combined with Figure 1-3 Shown, the low moisture content hydrogen chloride synthesis method provided by the invention,
[0026] The first step, a. Hydrogen is pressurized into the hydrogen main pipe through the water ring compressor, cooled at 5°C and filtered by fibers, and sent to the combustor of the synthesis furnace. A hydrogen treatment device is installed in the front of the hydrogen main control valve to dehydrate and deoxidize the hydrogen gas source. The specific treatment is: introduce ...
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Abstract
The invention provides a method for synthesizing hydrogen chloride with low moisture content. Hydrogen is dehydrated and deoxygenated before hydrogen and chlorine are fed into a synthesis furnace to be combusted to prepare chlorine chloride, so that the water and oxygen contents of the hydrogen are reduced to be 100 PPm or below; and chlorine is deoxygenated, so that the oxygen content of the chlorine is reduced to be 100 PPm or below. The invention also provides a system for synthesizing hydrogen chloride with low moisture content. According to the structure of the system, a hydrogen treatment device is arranged on a hydrogen main pipe of an original system for synthesizing chlorine chloride, the hydrogen main pipe is divided into a front section high-water-oxygen hydrogen main pipe and arear section purified hydrogen main pipe, and the purified hydrogen main pipe is connected with the synthesis furnace; a chlorine treatment device is arranged on the chlorine main pipe, the chlorinemain pipe is divided into a front section oxygen-containing chlorine main pipe and a rear section purified chlorine main pipe, and the purified chlorine main pipe is connected with the synthesis furnace. In the system, multi-self-circulation is further designed, owing to reciprocating treatment, purposes of stable switching of an adsorption tower, controllable system pressure fluctuation, oxygen-containing effluent gas and up-to-standard water content are achieved, and the contents of water and oxygen of the hydrogen chloride gas directly produced by the synthesis furnace is 500 PPm or below.
Description
technical field [0001] The invention belongs to hydrogen chloride production technology, in particular to a method and a synthesis device for hydrogen chloride with low water content. Background technique [0002] Most of the chlor-alkali enterprises are equipped with hydrogen chloride synthesis and calcium carbide VCM synthesis process. Hydrogen chloride and acetylene are converted into vinyl chloride under the action of mercuric chloride catalyst. When the addition reaction is performed, the water content of the mixed gas of hydrogen chloride and acetylene is less than 600PPm (v / v ), so it is necessary to carry out such as cryogenic dehydration before entering the downstream process, which wastes energy, and often dehydration fails to meet the requirements, etc.; at the same time, because the hydrogen system uses a water ring compressor for pressure-lifting operation, its water content is very high. There will always be condensed water in the pipeline entering the synthesi...
Claims
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IPC IPC(8): C01B7/01C01B3/56C01B7/07
CPCC01B7/012C01B3/56C01B7/0743C01B2203/0495C01B2203/0465
Inventor 苏永学刘宝东张兆云桑兆虎张国林王增强李学伟马志超杜建军李友光牛应东赵丽颖肖国营周少强范月生周智川吴红志刘川徐建玲崔小英李明云亮梅冬青黄佳佳
Owner TANGSHAN SANYOU CHLOR ALKALI