CT6-11尾气低温加氢催化剂在二硫化碳厂硫回收装置的应用

介绍了二硫化碳行业的某硫磺回收及尾气处理装置的概况,并对开工初期的过程气组成进行了分析,得到了有机硫水解、加氢后的气体组成等数据。对硫磺回收过程中的氢耗较高、压差较大、急冷水pH值降低等原因进行了探讨,并结合催化剂评价,提出了相应的建议。在加氢催化剂重新硫化后,该装置加氢段运行良好。工业应用的结果表明,CT6-11尾气低温加氢催化剂+CT6-8钛基催化剂组合在二硫化碳厂的硫回收装置上得到了成功应用,可大力应用于同类工艺装置。

Application of CT6-11 low temperature tail gas hydrogenation catalyst on sulfur recovery unit in carbon disulfide plant

The general situation of a sulfur recovery and tail gas treatment unit in carbon disulfide industry is introduced. The composition of process gas at the beginning of operation is analyzed, and then the data about organic sulfur hydrolysis and gas composition after hydrogenation is obtained. The reasons of higher hydrogen consumption, larger pressure difference and pH value reduction of chilled water are discussed. Combined with catalyst evaluation, corresponding suggestions are proposed. The hydrogenation section of unit runs well after hydrogenation catalyst resulfurized. The results of industrial application show that the combination of CT6-11 low temperature tail gas hydrogenation catalyst and CT6-8 Ti-based catalyst has been applied successfully, which can be applied to similar devices.