10_MPa日产千吨冷凝法吸附法耦合分离氨的氨合成工艺模拟_沈天洋

Mar．2020现代化工第40卷第3期ModernChemicalIndustry2020年3月10MPa日产千吨冷凝法吸附法耦合分离氨的氨合成工艺模拟沈天洋1，何红军2，刘作松1，潘兴祥1，杜泽宇1，梅华1*，朱明1(1．南京工业大学化工学院，江苏南京210009；2．江苏扬农化工股份有限公司，江苏扬州211400)摘要:提出将冷凝法与吸附法耦合分离氨的氨合成工艺，通过AspenPlus模拟分析比较了10MPa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。关键词:合成氨；吸附分离；AspenPlus；模拟中图分类号:TQ113．2文献标志码:A文章编号:0253－4320(2020)03－0212－05DOI:10．16606/j．cnki．issn0253－4320．2020．03．046Simulationof1000t/dammoniasynthesisprocessunder10MPawithcondensation-adsorptioncoupledseparationmethodSHENTian-yang1，HEHong-jun2，LIUZuo-song1，PANXing-xiang1，DUZe-yu1，MEIHua1*，ZHUMing1(1．CollegeofChemicalEngineering，NanjingTechUniversity，Nanjing210009，China；2．JiangsuYangnongChemicalCo．，Ltd．，Yangzhou211400，China)Abstract:Anammoniasynthesisprocessusingcondensation-adsorptioncoupledmethodtoseparateammoniaisproposed．The1000t/dammoniasynthesisprocessunder10MPawithcondensation-adsorptioncoupledseparationofammoniaissimulatedbymeansofAspenPlusandcomparedwiththetraditionalammoniasynthesisprocesswithammoniacondensationseparation．Theresultsshowthatcouplingammoniacondensationseparationwithammoniaadsorptionseparationcaneffectivelyincreasethenetammoniaconcentration，reducetheamountofcirculatinggasofammoniasynthesisloopandtheusageofcatalyst，andeffectivelyreducetheammoniacompressorpower．Asthecondensationtemperatureincreases，theammoniacompressorpowerwillbefurtherreduced，buttheamountofadsorbent，thebedvolumeoftheadsorption/deso