On the usage of sulfur recovery catalysts
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This post was last edited by liaifeng on 2018-8-2 at 10:50. Our company uses a two-stage Claus process combined with exhaust gas hydrogenation for sulfur recovery; the Claus catalyst consists of a mixture of Al2O3 catalyst and oxygen-scavenging protective catalysts. After two years of use, its performance has declined significantly Thermal reduction also doesn’t work; the exhaust hydrogenation system is severely clogged. Could Haiyou please introduce your situation? Which technology to use? Service life? Including exhaust gas hydrogenation.
Typical catalysts are used for two years
Our catalysts generally last for three years.
There are not many manufacturers in China that produce catalysts for sulfur recovery; there are only five or six of them: Qilu Keli, Chengdu Nengte, Shandong Xunda, Zibo Luyuan, Jiangsu Tiandong, and Pingxiang Kopak. The first two are the technologies developed by Sinopec Qilu Institute and CNPC Southwest Institute; the next two represent extensions of the technologies from Qilu Institute. As for the last two, it’s not clear yet, but they are likely also extensions of such technologies – that’s how things work in this field in China. Call these few companies separately
Apart from the catalyst itself, the main factors affecting its service life are the stability and purity of the raw material components, followed by the quality of the processing procedures! Moreover, under normal circumstances, catalyst manufacturers of sulfur guarantee that the catalysts need to be replaced every six years with normal use!