降低催化裂化干气中C3 + 含量的模拟与优化

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作者单位:: 1.中国石油规划总院，北京 100083；2.中国石油商业储备油分公司，北京 100007
1. PetroChina Planning and Engineering Institute，Beijing 100083，China；2. CNPC Commercial Reserve Oil Company，Beijing 100007，China

关键词:: 模拟优化；吸收稳定；降低催化裂化干气；C3 + ；AspenHYSYS
simulation optimization；absorption stabilization；reduction of catalytic cracking dry gas；C3+；AspenHYSYS

摘要:: 摘要：针对某催化裂化装置干气中C3 + 含量偏高的问题，利用AspenHYSYS流程模拟软件搭建

吸收稳定系统模型，模拟分析了补充吸收剂流量、解吸塔冷热进料比和贫吸收油流量对干气

中C3 + 的影响。在满足产品指标和塔负荷性能前提下，分析了3种优化方案，保持实际生产中

解析塔冷热进料比0.12不变，补充吸收剂流量增至22.0 t/h和贫吸收油流量增至30.0 t/h时，可

将干气中C3 + 体积含量降至1.6%以内，成为炼化企业提质增效的有效手段。

Abstract: In order to solve the problem of high C3 + content in dry gas of a catalytic cracking unit, an absorption stabilization system

model was established by using AspenHYSYS process simulation software to simulate and analyze the effects of supplemental

absorbent flow rate, cold/hot feed ratio of desorption tower and lean absorption oil flow rate on C3 + in dry gas. Under the premise of

meeting the product index and tower load performance, three optimization schemes were analyzed. Remaining the cold/hot feed ratio

of the stripper at 0.12 in actual production, increasing the supplementary absorbent flow rate to 22.0 t /h and the lean absorbent oil

flow rateto 30.0 t /h, the C3 + volume content in dry gas could be reduced to less than 1.6%, which had become an effective means for

refining and chemical enterprises to improve quality and efficiency.