提出将冷凝法与吸附法耦合分离氨的氨合成工艺，通过Aspen Plus模拟分析比较了10 MPa日产千吨冷凝法吸附法耦合分离氨的氨合成工艺与传统冷凝法分离氨的氨合成工艺。结果表明，将冷凝法与吸附法耦合分离氨能有效提高氨净值，减小氨合成回路循环气量及催化剂用量，同时能有效降低冰机功耗。此外，提高冷凝温度可进一步降低冰机功耗，但相应的吸附剂用量、吸附/解吸塔床层体积将增大，解吸所需热量也将更高。

An ammonia synthesis process using condensation-adsorption coupled method to separate ammonia is proposed.The 1 000 t/d ammonia synthesis process under 10 MPa with condensation-adsorption coupled separation of ammonia is simulated by means of Aspen Plus and compared with the traditional ammonia synthesis process with ammonia condensation separation.The results show that coupling ammonia condensation separation with ammonia adsorption separation can effectively increase the net ammonia concentration,reduce the amount of circulating gas of ammonia synthesis loop and the usage of catalyst,and effectively reduce the ammonia compressor power.As the condensation temperature increases,the ammonia compressor power will be further reduced,but the amount of adsorbent,the bed volume of the adsorption/desorption column will increase,and the heat required for desorption will also be higher.

沈天洋(1995-),男,硕士生