煤化工和磷复肥相关系统的联产改造

Revamping of the Relevant Systems of the Coal Chemical Industry and the Phosphate/Compound Fertilizer Producers for Co-production

介绍了陕西陕化化工集团有限公司依托煤化工产业的发展并围绕磷复肥产业实施的4项联产改造技术,主要包括:将煤化工湿式酸性气体制酸(WSA)装置副产的硫酸用于生产湿法磷酸,将1,4-丁二醇(BDO)装置副产的废硫酸用于调整磷酸二铵产品总养分,新建合成氨专线供给磷酸铵生产,用汽轮机低压释放汽浓缩磷酸等,分析评价了其联产的背景、技术及效果和效益。

Based on the development of coal chemical industry and the 4 co-production and revamping technologies executed on the phosphate and compound fertilizer, namely, phosphoric acid production from the sulfuric acid by-pro- duced from the wet sulfuric acid （WSA） facility in the coal chemical industry, readjustment of the total primary nutrients of the diammonium phosphate by the spent sulfuric acid by-produced from the 1,4 butanediol （BDO） facility, preparation of a dedicated ammonia pipeline for the ammonium phosphate production, phosphoric acid concentration by the low-pressure released vapor from the steam turbine, etc. The co-production effect and benefit was analyzed and assessed.