Device and process for purifying crude carbon monoxide
A carbon monoxide and compressor technology, applied in the direction of carbon monoxide, etc., can solve the problem of inability to deal with hydrogen content, etc., achieve the effect of convenient device modification, simple process, and improved separation effect
Pending Publication Date: 2019-03-08
SHANGHAI HUALIN IND GASES
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This method is used to process the mixed gas of carbon monoxide, hydrogen and nitrogen, and cannot process crude carbon monoxide with very low hydrogen content
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[0026] A crude carbon monoxide purification device, such as figure 1 As shown, it includes a temperature swing adsorption unit 1 and a cold box 2 sequentially connected by pipelines. One outlet of the cold box 2 is connected to a CO compressor 3 and forms a cycle with the CO compressor 3. The other outlet of the cold box 2 is connected to a The pressure swing adsorption unit 4 and the desorption gas compressor 5, the outlet of the desorption gas compressor 5 is connected to the temperature swing adsorption unit 1 to form a cycle, the outlet of the CO compressor 3 is connected to the CO product pipeline 7, and the outlet of the pressure swing adsorption unit 4 is connected to the hydrogen product pipeline 9. The CO product pipeline 7 leads to the CO circulation pipeline 8, and is connected with the inlet of the desorption gas compressor 5, and the hydrogen circulation pipeline 10 is drawn between the cold box 2 and the pressure swing adsorption unit 4, and is connected with the ...
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The invention relates to a device and a process for purifying crude carbon monoxide. Fine carbon monoxide (PCO) is produced by using crude carbon monoxide (RCO). The device comprises a temperature swing adsorption unit (1) and a cold box (2) connected in sequence. An outlet of the cold box (2) is connected to a CO compressor (3), a pressure swing adsorption unit (4) and a desorbed gas compressor (5) separately. An outlet of the pressure swing adsorption unit (4) is connected to a hydrogen product pipeline (9). A CO circulation pipeline (8) is led out from a CO product pipeline (7) and is connected to the desorbed gas compressor (5). A hydrogen circulation line (10) is led out between the cold box (2) and the pressure swing adsorption unit (4), and is connected to the desorbed gas compressor (5). Compared with the prior art, the invention has the advantages that by utilizing the surplus capacity of the existing CO compressor and the desorbed gas compressor in a synthesis gas separationdevice, the RCO is purified into the PCO, the device is simple, the process is convenient and the separation effect is good.
Description
technical field [0001] The invention relates to a crude carbon monoxide purification, in particular to a crude carbon monoxide purification device and process method. Background technique [0002] The CO content of industrially produced crude carbon monoxide is only 98%, impurity H 2 The content of carbon monoxide can be as high as 1%, which cannot meet the purity requirements of most chemical industries for carbon monoxide products (CO>98.9%, H 2 <100ppm). Hereinafter referred to as RCO and PCO respectively. [0003] Chinese patent CN200480028427.7 discloses a method for producing carbon monoxide by low-temperature distillation, said method comprising the following steps: cooling and partially condensing a gas mixture containing carbon monoxide, hydrogen and nitrogen to obtain a cooled and partially condensed gas mixture; separating the The cooled and partially condensed gas mixture produces hydrogen-rich gas and carbon monoxide-rich liquid; the carbon monoxide-ric...
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IPC IPC(8): C01B32/40
CPCC01B32/40
Inventor 黎鹏苏科峰项吴定钟华钱海玲宋孝林谢惠云高嵩李现民吉荣徐晶陆连根汤永其
Owner SHANGHAI HUALIN IND GASES