长期以来,CO_2压缩机使尿素原料气中严重带油而导致系统中一段分解加热器、二段分解加热器的结垢,影响尿素生产系统蒸汽消耗高,垢层清洗又一直是制约长周期运行的难题,其中以一段分解加热器问题更为突出。而合成塔出料及一分塔出料二次加入空气中的油含量则直接影响一段分解、二段分解加热器的结垢程度。西安超滤净化工程有限公司采用全新的凝聚式除油机理研制的“工艺气超高效除油过滤器”,于1999年8月在山东省章丘市第二化肥厂投用并取得显著成效。 For a long time, the CO 2 compressor causes the urea feed gas to be severely oil-contaminated, resulting in the fouling of the first-stage decomposing heater and the second-stage decomposing heater in the system and the high steam consumption of the urea production system. The scale cleaning has always been a constraint on the long- Of the problems, including a period of decomposition of the heater more prominent. The output of the synthesis tower and a tower out of secondary air added to the oil content is a direct impact on a period of decomposition, the second stage decomposition heaters scaling. Xi’an Ultrafiltration Purification Engineering Co., Ltd. using the new cohesive degreasing mechanism developed “super-efficient process gas degreasing filter,” in August 1999 in Shandong Province Zhangqiu Second Fertilizer Plant and achieved significant results.