天然气催化部分氧化模拟及性能分析

SIMULATION AND PERFORMANCE ANALYSIS OF GAS CATALYTIC PARTIAL OXIDATION

天然气催化部分氧化制合成气具有反应速度快、选择性高、反应器体积小及能耗低等优点,可以用于 甲醇、二甲醚合成等化工过程,而这些化工流程的设计需要选择合适的反应器工作条件。为此,首先概括总结了反 应条件,然后利用AspenPlusTM建立了该反应器的模型。采用该模型的计算结果与已有工业数据的对比结果表明, 该模型能够较准确地预测催化部分氧化(CPOX)反应器的性能和出口状态。这样就可以利用该模型,分析各输入 参数,如氧碳比、气碳比等对反应器性能及积炭形成的影响。根据这些分析结果,就可以选择恰当的反应条件在消 除积炭形成的同时,制取所需H2/CO比的合成气。

It has the advantages of rapid reaction rate, high selectivity, smaller reactor size and lower energy consumption etc. to make the synthesis gas by gas Catalytic Partial Oxidation (CPOX), which can be integrated into the chemical processes such as methanol and DME synthesis. However, the design of these chemical processes requires appropriate operating conditions of the reactor. So, the reaction conditions are summed at first. Then the model of the reactor is developed with Aspen Plus™. The calculating results are compared with the existing real data. The results show that the model can accurately predict the performance and the outlet status of the CPOX reactor. With this model, the impacts of several input parameters, such as oxygen/carbon ratio, gas/carbon ratio, on reactor performance and carbon formation can be analyzed. Based on the analysis results, the proper reaction conditions can be determined to make the synthesis gas with required H2/CO ratio and without carbon deposit.