辽阳石油化学纤维总厂蒸气裂解装置(21)是从法国 IFP 引进的。装置中,设有三台离心式压缩机:C201为裂解气压缩机,C401为乙烯压缩机,C402为丙烯压缩机。它们在整个工艺过程中,起着十分重要的作用。喘震现象是离心式压缩机的一个特性,喘震现象如不及时克服,将会使设备损坏。为了防止喘震的发生,人们设计了很多种方案,日趋有效地实现了压缩机的防喘控制。我厂的裂解装置中,三机的防喘震方案比较 Liaoyang Petrochemical Fiber Plant steam cracker (21) is introduced from the French IFP. In the installation, there are three centrifugal compressors: C201 cracked gas compressor, C401 ethylene compressor, C402 propylene compressor. They play a very important role throughout the process. Surge is a feature of centrifugal compressors, and if the surge is not overcome in time, it will damage the equipment. In order to prevent the occurrence of the surge, people have designed many kinds of schemes and realized the anti-asthma control of the compressor more and more effectively. I plant the cracking device, three anti-surge program comparison