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METHOD FOR HYDROGENATION OF ALKENES AND ALKYNES IN LOW PRESSURE HYDROCARBONS PROCESS STREAMS
METHOD FOR HYDROGENATION OF ALKENES AND ALKYNES IN LOW PRESSURE HYDROCARBONS PROCESS STREAMS
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机译:低压烃工艺流程中烯烃和烯烃的加氢方法
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摘要
A propane dehydrogenation and propylene purification process in which a stream comprising propylene, propane, and methyl acetylene and propadiene (MAPD) is mixed with a hydrogen stream then reacted in at least three distinct reaction zones in a hydrogenation reactor system where MAPD is hydrogenated by a high-selectivity hydrogenation catalyst in a first reaction zone, and a second and a third reaction zones each have a low-selectivity hydrogenation catalyst to remove unreacted hydrogen. The outlet stream leaving the hydrogenation reactor system is MAPD-free and can be fed to a splitter column, which now mainly serves to separate propylene from propane. Various embodiments of reaction zone arrangements in a single or multiple reactors are also provided.
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