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长期以来，ＣＯ２压缩机使尿素原料气中严重带油，导致系统中一段分解加热器、二段分解加热器的结垢及垢层清洗一直是制约、影响尿素生产系统蒸气降耗及长周期运行的难题，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
For a long time, the CO2 compressor causes the urea feed gas to be severely oil-contaminated, resulting in the first stage decomposition heater in the system and the scaling and scale cleaning of the second stage decomposition heater. This has always been a constraint that affects the steam consumption and long-term operation of the urea production system Of the problems, including a period of decomposition of the heater more prominent. The output of the synthesis tower and a tower of secondary discharge of air in the oil content will directly affect the section