1,4-Butanediol device containing acetylene exhaust gas recovery device and recovery method
A recovery device and gas purge technology, applied in chemical instruments and methods, absorption purification/separation, inorganic chemistry, etc., can solve the problems of torch head carbon deposition, over-temperature, continuous production of devices affecting the service life of the torch, etc. The effect of consumption, good economic benefits and social benefits
Active Publication Date: 2018-08-24
CHINA CHENGDA ENG
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Problems solved by technology
Due to the characteristics of high calorific value and high carbon content of acetylene, long-term combustion can easily cause carbonization, blockage and local overheating of the torch tip, which will affect the service life of the torch and the continuous production of the device
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[0016] Below in conjunction with accompanying drawing, the present invention is described in detail.
[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0018] Such as figure 1 As shown, a 1,4-butanediol plant contains an acetylene exhaust gas recovery device, and the BYD synthesis process of the 1,4-butanediol plant contains an acetylene exhaust gas that is connected to the tail gas washing tower 1, and the tail gas The water washing tower 1 is connected to the torch water seal 2, the torch water seal 2 is connected to the acetylene torch 3, and the bleed gas flow regulating valve is modified to increase the pressure of the BYD synthetic bleed g...
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The invention discloses an acetylene-containing purge gas recovery unit of a 1,4-butanediol apparatus. Purge gas containing acetylene obtained from a BYD synthesis process of a 1,4-butanediol apparatus is connected to a tail gas washing tower. The tail gas washing tower is in connection with a torch water seal, which is connected to an acetylene torch. The tail gas washing tower is connected to a purge gas purifying and decomposition-preventing tower through a pipeline, and upper and lower parts of the purge gas purifying and decomposition-preventing tower are connected through a circulation liquid pump to form a circulation path. The top part of the purge gas purifying and decomposition-preventing tower is connected to a reaction gas compressor of a natural gas acetylene apparatus through a pipeline, and the reaction gas compressor is connected to an acetylene refining unit. Through reconstruction of an existing system of a 1,4-butanediol apparatus, the operation pressure of purge gas synthesized from BYD and the vent back pressure of a torch system are increased; and a purge gas purifying system is added to concentrate and recover valuable components, such as acetylene and carbon dioxide, in the purge gas. The combustion evacuation amount of a torch is reduced, the environment pollution is reduced, and the use life of the acetylene torch is prolonged.
Description
technical field [0001] The invention belongs to the technical field of 1,4-butanediol production, in particular to a BYD (1,4-butynediol) synthesis of acetylene and the like in the purge gas by an improved alkyne aldehyde method 1,4-butanediol device. A recovery device and recovery method for value components. Background technique [0002] 1,4-Butanediol (BDO for short) is an important basic organic chemical and fine chemical raw material with a wide range of uses. Its various derivatives are fine chemical products with high added value, which are widely used in many fields of national economy. [0003] Using natural gas as the initial raw material to produce 1,4-butanediol is an energy-saving and efficient production method widely used at home and abroad. The process flow is as follows: the raw natural gas is partially oxidized in the natural gas acetylene plant to generate acetylene and by-product acetylene tail gas; the acetylene tail gas is rich in hydrogen and carbon ...
Claims
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IPC IPC(8): C07C11/24C07C7/00C07C7/11C01B32/50
CPCC07C7/005C07C7/11C07C11/24
Inventor 范奕徐伟李健苏强何发明
Owner CHINA CHENGDA ENG