Abstract
As SO2 nuisance has become a large social problem, it is urgently requested to develope the desulfurization technique applicable to the present conditions in Japan.
From this stand point, the several points are discussed in this review based on recent literature on resid hydro-desulfurization and researches carried out at Research & Development Association of Resid Hydro-Desulfurization, mainly on the fixed bed catalysts:
1. structures of catalysts quite effective to desulfurize materials containing metal-complexes, asphaltens etc.
2. poisoning materials of catalysts. 3. status of poisened catalysts.
Hydrogen consumption and material balance which are important factors to evaluate the performance of catalysts are also described.
