沈阳石蜡化工有限公司 0 .5Ｍｔ/ａ常减压蒸馏装置 ,由洛阳石油化工工程公司设计 ,于 1 997年投入生产。原设计是以沈北原油为原料 ,生产催化裂化、尿素脱蜡、酮苯脱蜡和溶剂脱沥青等装置的原料。随着 0 .35Ｍｔ/ａ催化裂化装置的建成投产 ,全厂性的生产方案发生了变化 ,因为常 Shenyang Paraffin Chemical Co., Ltd. 0 .5Mt / a atmospheric and vacuum distillation unit, designed by the Luoyang Petrochemical Engineering Company, put into production in 1997. The original design is Shenbei crude oil as raw material, the production of catalytic cracking, urea dewaxing, ketone benzene dewaxing and solvent deasphalting devices such as raw materials. With 0.35Mt / a catalytic cracking unit put into operation, the whole plant production program has changed, because often