一、概 述通常在压缩机领域中,将几百气压以上的压力称为高压,相当于此压力的流程如:低密度聚乙烯、氨、尿素、直接脱硫及液氧等设备。其中,在1000个气压以上,需要超高压的仅有低密度聚乙烯设备。因此,当前的超高压压缩机只能用于这种设备上。低密度聚乙烯流程使用的设备,有供给新鲜气体的一次压缩机和循环压缩未反应气体的二次压缩机,即超高压压缩机。 I. Overview Usually in the field of compressors, the pressure above several hundred gas pressure is called high pressure, equivalent to the pressure of such processes as: low density polyethylene, ammonia, urea, direct desulfurization and liquid oxygen and other equipment. Of these, only ultrahigh-pressure, low-density polyethylene equipment is required above 1,000 atmospheres. Therefore, current super-high pressure compressors can only be used on such equipment. Equipment used in the low-density polyethylene process includes a primary compressor for supplying fresh gas and a secondary compressor for circulating unreacted unreacted gas, that is, an extra-high pressure compressor.