磷石膏、NH3联合矿化天然气净化厂尾气中CO2的流程模拟

针对CCUS新工艺——磷石膏、NH3联合矿化天然气净化厂排放尾气中CO2,应用流程模拟方法,在物性估算、模型建立的基础上,对磷石膏矿化CO2反应的工艺条件进行了优化,提出反应温度为60℃、反应时间为100min的优化方案。对比优化后工艺条件与现有工艺条件的模拟结果可知,优化后尾气中CO2、NH3、磷石膏排放量比现有工艺排放量均减少3%以上。以降低工程能耗为优化目标,通过对全流程进行换热网络的设计,可使热公用工程能耗降低15%,冷公用工程能耗降低5.6%。

Mineralization process simulation of CO2 in tail gas of natural gas purification plant by phosphor gypsum combined with ammonia

Based on the investigation of the main tail gas treatment processes of sulfur recovery unit as well as the current emission analysis of the natural gas purification plants in southwest China, the processes of hydrogenation reduction and renewable organic amine were compared. The emission reduction scheme of tail gas was proposed, which could provide a new way to reduce the emission of tail gas from the natural gas purification plants in southwest China.