目录氨气提法和二氧化碳气提法尿素生产技术的新进展及评价.. . .2第一章 氨气提法尿素生产技术...................41.1 气提管由钛管改为双金属管.................................41.2 滚筒造粒技术.............................................51.3 深度水解.................................................61.4 CO2压缩机的选型..........................................71.5 造粒塔排风口尿素粉尘洗涤装置................................71.6 防爆措施.................................................8第二章 CO2气提法尿素生产技术.................92.1 采纳新型高效的塔盘........................................92.2 池式冷凝器..............................................112.3 降低尿素装置主框架的高度................................122.4 脱氢装置................................................13结论与评价.............................14致 谢...............................15参考文献:..............................16氨气提法和二氧化碳气提法尿素生产技术的新进展及评价专业班级：应用化工技术 学生姓名：王佳佳 指导老师： 职称： 讲师摘要 在回顾尿素生产的工业化及工艺流程演变的基础上 ,提出不同尿素工艺评价的原则 ,认为我国现有水溶液全循环法尿素装置的改造必须在降低蒸汽和电耗上下功夫 [1] ,由于技术的落后，提出了另外方法，通过对氨气提法和二氧化碳气提法的尿素专利商、生产装置的考察 ,了解到这 2 种技术近几年来的进展情况 ,并结合国内生产实际进行评价[2]。关键词： 气提法 工艺 运转率 年产量New Progress in Technology for Urea Production by Ammonia Stripping and Carbon-Dioxide Stripping their Comparison and EvaluationAbstract On the basis of review of commercialization of urea production and evolution of the processes, principles for evaluation of the various urea processes have been proposed. It is believed that in the retrofit of the total recycle aqueous solution urea units existing in China efforts must be concentrated on the decrease in steam and power consumption. Main measures are given for lowering the...
