关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">硫磺回收尾气, CT6-13, 低温加氢催化剂, 填充方法, 预硫化, 反应器床层温度, 二氧化硫, 超低排放

Abstract: The sulfur recovery unit of PetroChina Sichuan Petrochemical Co., Ltd. adopts hydrogenation reduction absorption process and dedicated hydrogenation catalyst for tail gas treatment. A comparison was made between the low temperature hydrogenation catalyst CT6-13 and the conventional hydrogenation catalyst CT6-5B in terms of physical properties, loading methods, presulfuration, and technical performance. An in-depth comparison and analysis of the application of CT6-5B and CT6-13 in the tail gas hydrogenation reactor showed that the use of CT6-13 catalyst has significant energy-saving and consumption-reducing effects. The tail gas emission meets the design requirements of total sulfur not exceeding 50 μL/L and SO2 emission concentration not exceeding 100 mg/m³. With the support of efficient desulfurizer CT8-26 and flue gas washing technology, it is possible to achieve standard emission during the start-up process and ultra-low emission of SO2 during daily operation (less than 5 mg/m³). While saving energy and reducing consumption, it also solves the green production during start-up and abnormal conditions and the bottleneck problem of long-term operation of the tail gas incinerator in the sulfur recovery unit.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">sulfur recovery tail gas, CT6-13, low temperature hydrogenation catalyst, loading method, presulfuration, reactor bed temperature, sulfur dioxide, ultra-low emission