关键词: 丙烷脱氢, 脱醇, 脱硫, 吸附剂, 再生

Abstract: A renewable adsorbent for the removal of sulfides and oxygen-containing compounds from propane feedstock in propane dehydrogenation（PDH）unit was studied. The influence of regeneration times on the adsorption performance and mechanical strength of the adsorbent was investigated by a fixed-bed simulation experiment. The results showed that the retention rates of desulfurization, dealcoholization and mechanical strength were 89.4%, 88.5% and 83.2%,respectively,after 150 times regeneration. Under actual operating conditions in industrial unit, the effect of propane desulfurization and dealcoholization was significant. After nearly six years of continuous operation, when the inlet impurity content was far above the average level, the mass fraction of methanol and sulfur in the raw propane could be reduced to less than 1.0 μg/g, which could meet the technical requirements of the PDH unit. The successful application of adsorbent for desulfurization and dealcoholization in PDH unit has solved the problem that propane raw materials in China could not match the technical requirements of imported process package, and provided a feasible path for the diversification of raw materials for PDH units in China.

Key words: propane dehydrogenation, dealcoholization, desulfurization, adsorbent, regeneration