摘 要
年产40万吨合成氨脱硫工段工艺设计是结合文献中提供的生产中收集到的各类生产技术指标而设计的。本设计所采用栲胶脱硫法对合成氨生产进行脱硫，其主要原料是半水煤气和脱硫液，详细介绍了合成氨脱硫工段的生产原理、工艺流程、工艺参数、物料衡算、热量衡算，以及设备选型、厂房布置和三废处理。本设计的特点是在脱硫效率和再生率方面的研究有所突破。 关键词：栲胶脱硫法 合成氨 脱硫塔
Abstract
Annual output of 400000 tons of ammonia desulfurization section of process design is to provide production, combined with literature collected all kinds of production technology index. This design adopts the extract desulfurization method for desulfurization, the production of synthetic ammonia, its main raw material is semi water gas and fluid of desulfurization. Ammonia desulfurization section was introduced in detail the principle, process flow, process parameters, material balance, heat balance, as well as the equipment selection, building layout, and three wastes disposal. The characteristic of this design is in the desulfurization efficiency and breakthrough in the study of regeneration rate.
Key words：method of desulfurization by tannin extract synthesis ammonia
Desulfurization tower
目录
1. 总论................................................................ 5
1.1.1 栲胶的组成及性质 ............................................................ 错误！未定义书签。 1.1.2栲胶脱硫的反应机理........................................................... 错误！未定义书签。 1.1.3生产中副产品硫磺的应用..................................................................................... 5 2. 研究目的和意义...................................................... 7
2.1合成氨的地位............................................................................................................ 5 2.2粗煤气脱硫的必要性................................................................................................ 5 2.3常用的几种脱硫方法（待补充）............................................................................ 6 2.4栲胶脱硫法的优点.................................................................................................... 8 2.4合成氨脱硫的意义.................................................................................................... 9 3.国内外发展状况（待补充）....................................................................................... 9 4. 流程方案的确定 ..................................................................................................... 10 4.2合成氨脱硫工段的工艺流程.................................................................................. 10 5.1 简述物料流程...................................................... 11
5.1.1气体流程................................................................................................................ 11 5.1.2溶液流程................................................................................................................ 11 5.1.3硫磺回收流程........................................................................................................ 11 5.2工艺的化学过程...................................................................................................... 12 5.3 反应条件对反应的影响 ....................................................................................... 13 5.3.1 影响栲胶溶液吸收的因素 .................................................................................. 13 5.3.2 影响栲胶液再生的因素 ...................................................................................... 15 5.4 工艺条件........................................................... 16
5.4.1 溶液组成 .............................................................................................................. 16 5.4.2 喷淋密度和液气比的控制 .................................................................................. 16 5.4.3 温度 ...................................................................................................................... 17 5.4.4再生空气量........................................................................................................... 17