CAJ | 학술논문

用高压氨合成催化剂性能评价装置，研究了反应温度、压力、空速、惰性气体含量、氢氮比和催化剂粒度对A301催化剂活性的影响。A301催化剂在15 MPa下的最适反应温度在430～480℃，在7 MPa下在376～450℃,比A110-2低15～35℃。A301催化剂的最佳H2，N2摩尔比nm在450℃时为2.55～3.0，在400℃时为2.23～2.55，在350℃时为1.76～2.22, 并可用nm =1.50+1.49(cNH3/c*NH3)来表示。惰性气体含量会使催化剂活性大幅度降低，每当惰性气体含量增加1%，出口氨浓度(氨净值)平均降低0.2％～0.35%。颗粒大小对活性或反应速率有严重的影响，其内表面利用率受反应温度和催化效率两个因素的影响，对于高活性的A301催化剂，催化效率的因素起主要作用。根据实验结果和合成氨反应的基本理论，讨论并提出了A301催化剂在合成氨生产中的最佳操作工艺条件。
용고압안합성최화제성능평개장치，연구료반응온도、압력、공속、타성기체함량、경담비화최화제립도대A301최화제활성적영향。A301최화제재15 MPa하적최괄반응온도재430～480℃，재7 MPa하재376～450℃,비A110-2저15～35℃。A301최화제적최가H2，N2마이비nm재450℃시위2.55～3.0，재400℃시위2.23～2.55，재350℃시위1.76～2.22, 병가용nm =1.50+1.49(cNH3/c*NH3)래표시。타성기체함량회사최화제활성대폭도강저，매당타성기체함량증가1%，출구안농도(안정치)평균강저0.2％～0.35%。과립대소대활성혹반응속솔유엄중적영향，기내표면이용솔수반응온도화최화효솔량개인소적영향，대우고활성적A301최화제，최화효솔적인소기주요작용。근거실험결과화합성안반응적기본이론，토론병제출료A301최화제재합성안생산중적최가조작공예조건。
The influences of temperature, pressure, space velocity, concentration of inert gas, ratio of hydrogen to nitrogen and particle size on the activity of A301 catalyst were investigated. The optimal reaction temperatures for A301 catalyst are in the range of 430～480℃ at 15MPa of pressure and 376～450℃ at 7MPa of pressure, 15～35℃ lower than A110-2 catalyst. The optimal ratios of hydrogen to nitrogen nm　for A301 catalyst are 2.55～3.0, 2.23～2.55 and 1.76～2.22 at temperature of 450, 400 and 350℃ respectively, and may be expressed by equation of nm =1.50+1.49(cNH3/cNH3*). The more the content of inert gas (CH４＋Ar), the lower the outlet ammonia concentration. When the content of inert gas increased by one percent, the outlet ammonia concentration lowered 0.2％～0.35%. The use ratio of inner face of a catalyst is not only related to the particle size but also to temperature and catalytic efficiency. But the catalytic efficiency acts mainly for high active A301 catalyst. According to the experiment results and the principle of ammonia synthesis, optimal operation conditions of ammonia synthesis on the A301 catalyst were proposed.