双塔变压再生脱碳工艺应用总结  

Sum-Up of Use of Carbon Dioxide Removal Process with Pressure Swing Regeneration in Dual Towers

作　　者：刘怀军 陈瑜 高艳平 

机构地区：[1]河南安阳化学集团公司,455133

出　　处：《化肥工业》2006年第2期58-60,共3页Chemical Fertilizer Industry

摘　　要：简介了双塔变压再生的原理及应用情况。改造后,一次碱洗出口CO2含量为1.5%,二次碱洗出口CO2含量为0.13%,低变出口CO含量为0.09%,甲烷化炉温差小于30℃,新鲜气中CH4含量为1.0%以下,合成系统放空量减少,氨产量明显提高,最高日产氨430 t,吨氨高压蒸汽耗下降400 kg,低压蒸汽耗下降760 kg。通过实际运行,双塔变压再生的控制要点为调节溶液循环量、控制液位、缩小压差、控制溶液温度和浓度、防止溶液起泡。A brief account is given of the principle and use of pressure swing regeneration in dual towers. After revamping, the CO2 content at the outlet of primary alkaline wash is 1.5%, that at the outlet of secondaly alkaline wash 0.13%, that at the outlet of low temperature shift 0.09%, the temperature difference of the methanator less than 30 ℃, the CH4 content in the fresh gas below 1.0%, the purge rate from the synthesis system decreases, the output of ammonia increases markedly, the highest daily ammonia output is 430 t, the consumption of high-pressure steam per ton of ammonia reduces by 400 kg, and that of low-pressure steam by 760 kg. Through actual operation, it is known that the main points to be controlled in pressure swing regeneration in dual towers are： adjustment of circulation rate of the solution, control of liquid level, decrease in pressure difference, control of solution temperature and concentration, and prevention of foaming of the solution.

关 键 词：脱碳 变压再生 总结 

分 类 号：TQ113.264[化学工程—无机化工] TN405.2[电子电信—微电子学与固体电子学]