Refining hydrogenation process
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Hydrogenation of oil and gas liquids: Oil and gas are fed into the reactor. What are the differences between feeding materials from the top and bottom, and from the bottom and top? What are the advantages and disadvantages of each approach?
The former is generally a fixed-bed reactor; the technology is relatively mature and the cost is somewhat lower； The latter is found in fluidized bed reactors, and this technology is used for the hydrogenation of heavy oils, achieving high conversion rates.
The down-flow and up-flow reactor operates at a full liquid level; the distribution of the material within the reactor is more uniform than in a conventional trickle bed, and the radial temperature distribution of the catalyst is even. However, the pressure drop in this reactor is higher than that in a trickle bed, as it is necessary to overcome the gravity of the material inside the reactor.