PSA变压吸附技术在合成氨中的应用分析

Application Analysis of PSA Pressure Swing Adsorption Technology in Ammonia Synthesis

在合成氨生产过程中存在着PSA提氢处理能力弱、氢气损耗量大的不足。以8.8万t/a合成氨PSA变压吸附技术为核心,对变压吸附技术方案进行了优化。通过氮气再生+微动力回收方案解决了传统变压吸附过程中气体损坏量大的问题。根据实际应用表明,新的变压吸附技术能够将系统排气口位置的二氧化碳体积分数降低到0.1%以下,氢气的回收率提升到了99.2%,极大地提升了合成氨过程中的气体利用率和经济性。

There are shortcomings in the production process of synthetic ammonia,such as weak PSA hydrogen extraction capacity and high hydrogen loss.The PSA pressure swing adsorption technology for 88000 t/year synthetic ammonia has been optimized as the core,and the pressure swing adsorption technology scheme has been optimized.The problem of large gas damage in traditional pressure swing adsorption process has been solved through nitrogen regeneration and micro power recovery solution.According to practical applications,the new pressure swing adsorption technology can reduce the carbon dioxide content at the exhaust port of the system to below 0.1%,improve the recovery rate of hydrogen to 99.2%,and greatly improve the gas utilization and economy in the ammonia synthesis process.