基于计算机流程模拟的氨合成工段节能减排分析  

Analysis of Energy Saving and Pollutant Reduction in Synthetic Ammonia Manufacture Based on Computer Process Simulation

作　　者：邱宇 

机构地区：[1]福建省环境科学研究院,福建福州350013

出　　处：《化工环保》2008年第5期463-466,共4页Environmental Protection of Chemical Industry

摘　　要：采用过程稳态模拟方法,通过计算机模拟氨合成工段生产流程,以灵敏度分析为手段,对某合成氨厂合成工段制冷系统和换热系统进行节能减排分析。分析结果表明:氨冷温度为-10～0℃时,放空气中氢气排放量呈线性递减;在-7℃时,氨气排放量存在一个极大值;氨冷温度对氢气排放量和制冷量的影响明显,而对氨气排放量影响很小;塔前预热器(热侧)出口气体温度越低,废热锅炉回收热量越多,水冷器损失热量越少;预热器出口气体温度为110℃时,系统回收热量与损失热量相等。最后,提出了节能减排的清洁生产方案。The steady-state process simulation method based on computer simulation and sensitivity analysis was used in the analysis of energy saving and pollutant reduction of refrigeration system and heat transfer system in an ammonia synthesis factory. The results indicate that the ammonia refrigeration temperature changes in -10-0 ℃, the hydrogen emission decreases linearly, and the ammonia emission has a peak at -7 ℃ ; The ammonia refrigeration temperature has a significant effect on the hydrogen emission and cooling capacity, but little effect on the ammonia emission; The lower the export gas temperature of preheater （hot side）, the more the heat recovered by the waste heat boiler, the less the heat lost by the water cooler; The recovered heat is equal to the lost heat when the export gas temperature of the preheater is 110 ℃. Based on the analysis, the cleaner production schemes saving energy and reducing pollutants are put forward.

关 键 词：计算机模拟 合成氨 节能减排 清洁生产 

分 类 号：TQ116.2[化学工程—无机化工]