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剖析了传统的热壁减压转油线存在的低速段水平直管热位移量大，对减压蒸馏塔和支架的推力大以及硫腐蚀严重等问题，详细介绍了冷壁减压转油线技术的开发及其在常减压蒸馏装置上的成功应用。
This paper analyzes the problems of large thermal straight-line displacement of low-speed horizontal straight pipe existing in traditional hot-wall decompression transfer line, large thrust on vacuum distillation tower and scaffolding, and serious sulfur corrosion. The cold-wall decompression transfer line Technology development and its successful application in atmospheric and vacuum distillation unit.