关键词: 制氢转化炉, 管壁温度场, 处理量, 催化剂, 水碳比, 火焰长度, 炉管长度, 炉型

Abstract: Based on the actual operation data of a refinery and combined with the operation parameters of reformer provided by the process licensor, the tube wall temperature of steam reformer was calculated and analyzed by using engineering design software. The factors such as unit capacity, outlet temperature of reaction medium, heat transfer of catalyst, water carbon ratio, flame length, tube length and reformer type were considered respectively. The results show that the tube wall temperature of top fired steam reformer increases rapidly in the initial stage of reaction, reaches the peak temperature near the flame length at the upper part of the tube, and then decreases slightly, the second wall temperature high point appears in the lower part of the tube, which is close to the first wall temperature high point. The tube wall temperature of the side fired reformer increases gradually with the reaction and reaches the highest point at the outlet of the reaction medium. The tube wall temperature distribution of the terrace wall fired reformer is similar to that of the multi-step side fired reformer.

Key words: steam reformer, tube wall temperature profile, treatment capacity, catalyst, water carbon ratio, flame length, length of furnace tube, furnace type