中国石油大庆石化分公司高压低密度聚乙烯(LDPE)装置反应系统采用管式反应法,一热、三冷四点进料技术,反应热主要由热水系统进行反应管外夹套循环取热.由于热水系统并没有按照锅炉水进行管理,原设计仅要求加入联氨一种药剂、水质则只有pH、Cl~-指标要求.此外,没有更多的水质指标控制和调节手段,因此热水系统水质指标不符合锅炉 China Petroleum Daqing Petrochemical Company high-pressure low-density polyethylene (LDPE) plant reaction system using tubular reaction method, a hot and cold three-point feed technology, the reaction heat mainly by the hot water pipe reaction jacket jacket cycle heat Because the hot water system is not managed according to the boiler water, the original design only requires the addition of hydrazine, and the water quality is only required by the pH and Cl ~ - indicators. In addition, there is no more water quality control and regulation measures, Water system water quality indicators do not meet the boiler