Air separation device and process for purifying oxygen and nitrogen by using air separation device

• Main Authors: LIU XUEBING, ZUO JINCHUN, HAO CAIYUN, ZHOU WEI, SU DETING, JIA XIAOHU, SONG CHUANNAN, GAO LEI, SHI YAJUN, CAO YUFENG, GAO PENGFEI, LU LIUBO, ZHANG JINGWEI, HAN FANG
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; MIXTURES BY PRESSURE AND COLD TREATMENT; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRIGERATION OR COOLING; SEPARATION; TRANSPORTING; WEAPONS

The invention relates to the technical field of air separation, in particular to an air separation device and a process for purifying oxygen and nitrogen by using the air separation device, and the air separation device comprises an air filtering module, an air compression module, an air cooling tower, a molecular sieve adsorber, a booster compressor, a booster expansion module, a fractionation module and a central control module. According to the invention, the central control module is used for preliminarily judging the reason that the amount of pure nitrogen produced by the fractionation module in unit time does not meet the standard according to the amount of waste liquid nitrogen and oxygen-enriched liquid air produced by the fractionation module after preliminary rectification when the amount of pure nitrogen produced by the fractionation module in unit time does not meet the standard; and the operation parameters of the corresponding equipment are adjusted to the corresponding values according to actua