介绍了变换装置的主要流程及变换炉的结构，提出通过气化装置在线分析数据计算变换炉进口各组分的含量，以及利用低温甲醇洗入口气量及色谱分析数值、进变换炉气量、气化炉外送水煤气流量计算变换反应转化率，最终推导出变换反应平衡常数，进而计算变换反应平衡温距的简便方法。通过分析变换炉气体分布特点，利用平衡温距结果，可以对催化剂当前活性做出正确判断。另外，基于反应器床层温度点分布及各层温升情况，提出了判断催化剂活性阶段的方法，结果表明:基于这两种方法，可以更精确判断催化剂的使用活性。通过定期计算平衡温距、定期分析床层温度分布，对运行工况进行综合调整，以延长变换催化剂使用寿命。
关键词: 变换催化剂 / 轴径向反应器 / 平衡温距 / 床层温度
Abstract:
This paper outlines the primary process flow of the shift unit and the structure of the shift converter. It proposes a simplified method for calculating the equilibrium temperature difference of the shift converter by determining the composition of each component at the reactor inlet using online analysis data from the gasifier, and by calculating the shift conversion rate based on the low-temperature methanol wash inlet gas volume, chromatographic analysis values, shift feed flow rate, and gasifier discharge gas flow rate. This ultimately results the shift reaction equilibrium constant. Catalyst activity can be accurately assessed by analyzing the gas distribution within the reformer and equilibrium temperature difference. Furthermore, a method for determining the catalyst activity phase is proposed based on the temperature distribution points on the converter beds and the temperature rise across each layer. Results indicate that these two approaches enable more precise evaluation of the catalyst's operational activity. The service life of shift catalysts can be extended by periodically calculating equilibrium temperature difference, analyzing bed temperature distribution, and adjusting operating conditions.
Keywords: shift catalyst / axial-radial reactor / equilibrium temperature difference / bed temperature