1) ammonia evaporation system
蒸氨系统
2) steam system
蒸汽系统
1.
Author has introduced the optimal adjustment method and the relative matters to be noticed in the steam system during various stages before the urea production plant was put into operation of chemical raw materials,when its operatio.
阐述了尿素生产装置在化工投料前、投料开车时以及合成塔出料后各阶段对蒸汽系统的优化调节方法和相关注意事项;提出了优化蒸汽系统的生产操作措施;对蒸汽系统优化调节前后的生产工况进行了对化。
2.
This article firstly states the constitution of steel enterprise's steam system,and then analyzes the present situation and deficiencies existing in steam system of steel enterprise.
介绍了钢铁企业蒸汽系统的构成情况;分析了钢铁企业蒸汽系统的现状及存在的不足;提出了加强余热回收并高效利用、优化管网运行、强化管理等有效的改善措施。
3.
The revamping of the gasification process,distributed control system,steam system,gas flow recovery system and the oil hydraulic system in the Second Plant of the Linyi Subsidiary of the Fengxi Fertilizer Group Co.
详细地介绍了山西丰喜肥业(集团)股份有限公司临猗分公司二分厂造气车间煤气流程、微机控制系统、蒸汽系统、吹风气回收系统和油压系统的改造情况及运行效果,改造后生产运行稳定,每年可产生480余万元的经济效益。
3) evaporation system
蒸发系统
1.
Modeling of five-effect underpressure evaporation system for PAN fiber based on artificial neural network;
应用人工神经网络模拟腈纶五效减压蒸发系统
2.
The energy and environment settlement project of EVAPS evaporation system;
EVAPS蒸发系统的能源和环境解决方案
3.
Reformation of electricity saving of water circulating pumps in the evaporation system
蒸发系统循环水泵节电改造
4) vapor system
蒸气系统
5) continuous cooking system
连蒸系统
1.
Exploration in adding huge end eucalyptus in masson pine continuous cooking system;
马尾松连蒸系统掺入部分巨尾桉的探索
6) istillation system
蒸馏系统
1.
his paper intruduces the method of realizing water,fermented glutinous rice and stream press balance in micro-computer real-time controlling alcohol distillation system,which includes the design of system controlling flow,software and hardware.
采用该方案的微机实时控制系统,提高了蒸馏系统的稳定性和产品质量。
补充资料:蒸氨塔
蒸氨塔
ammonia stripper
zheng,anta蒸氨塔(ammonia stripper)水洗氛法回收氛的主要设备之一。蒸氨塔分为泡罩蒸氨塔和栅板蒸氨塔两种。 泡罩蒸氨塔主要由塔体和塔盘组成。(图l)塔盘包括泡罩(圆形或条形)、溢流堰板、降液管和塔板。塔板间距一般为350一6oomm。老式泡罩塔盘用铸铁制造。(图2。)新式泡罩蒸氨塔分上下两段,用法兰连接,内有25层圆形泡罩塔盘。上段(5层和外壳)用钦材制造,下段(2O层和外壳)用超低碳不锈钢制造。分缩器放在蒸氨塔顶部,是蒸氨塔的一部分。原料氨水从塔顶进入,沿降液管逐层下降,被经升汽管上升的水蒸气逐层蒸馏,蒸出游离氨。含氨蒸气从塔顶经分缩器排出。氨水从第14层塔盘引出,送往反应塔。在反应塔内加入氢氧化钠使固定钱分解为游离氨,氨气回到第15层。蒸氨废水从塔底排出。 栅板蒸氨塔主要由塔体和塔板组成。塔板上开有条形栅缝,(图2b)无降液管,故称穿流式栅板塔,又称淋降板塔。 栅缝开孔率取15一25%,栅板层数通常为32层;板间距为300~350mm。栅板和塔壳用铸铁制造。汽液少 图I泡罩蒸氨塔条形泡口流堰降液寻尾曼 图2塔盘 a一条形泡罩式;b一栅板式两相逆流穿过栅板,维持动态平衡。塔板液层可呈润湿、鼓泡和液泛三种状态。润湿状态时,板上无液层,传质效率最低;液泛状态时,塔内空间几乎全被液体 充斥,为正常操作所不允许;鼓泡状态时,汽相鼓泡 穿过栅板上液层,传质最好,塔效率一般在30%以 上。 (荣祖棋)
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