【摘要】 介绍了临泉化工股份有限公司尿素装置扩产节能技术改造的要求;论述了尿素装置7个部分的改造内容;提出了合成塔内件采用新型GC型塔板、分解系统采用预分离—预精馏流程等项改造方案;总结了改造后生产运行效果。结果表明:放空气中氨含量从8%降低到2%以下,在保证生产强度增加20%的情况下,CO2转化率从64%增加到68%,吨尿素节省蒸汽50 kg,操作弹性在40%~100%范围内,产品质量达到优等品标准。更多还原

【Abstract】 Author has introduced the requirements for production expansion and energy conservation technology reformation of urea plant in the Anhui Linquan Chemical Engineering Company Ltd,has discussed the reformation contents of the 7 parts in the urea plant,has proposed the following reformation schemes,such as adopting the novel GC type reactor plate for internal of reactor,and using the pre-separation——pre-rectification process for the decomposing system and so on;production running effect was summarized after reformation.Result indicates: Ammonia content in the venting gas is reduced from 8% to 2% under condition of guarantying production strength added by 20%,the CO2 shift rate is increased from 64% to 68%,steam consume is saved by 52 kg per ton of urea.The product quality reaches to superiority grade product standard within the operating flexibility range of 40%~100%.更多还原