Hydrogenation technological method for reducing skimming of catalyst

Abstract

The invention provides a hydrogenation technological method for reducing the skimming of a catalyst, which is characterized in that: a standby gas-liquid distributor is arranged on a catalyst bed layer at the top of a hydrogenation reactor; the standby gas-liquid distributor consists of a long center pipe and a bubble cap; the upper end of the long center pipe is above the catalyst bed layer; the bubble cap is arranged at an upper part of the long center pipe, and a gap for materials to flow exists between the bubble cap and the long center pipe; the opening at the upper end of the long center pipe is closed by a pressure rupture film; the lower part of the long center pipe extends into the catalyst bed layer; and the rupture differential pressure of the pressure rupture films is lower than 0.45 MPa and higher than 0.1 MPa. According to the method provided by the invention, no big change is required to be carried out on the existing device, the long-term operation for the device can be realized with smaller investment, the catalyst of the whole bed layer is sufficiently utilized, and meanwhile, the pressure drop of the reactor is reduced, so that the production safety is ensured, and the economic benefit is increased.

Description

technical field [0001] The invention relates to a hydrogenation process method for reducing catalyst skimming, which belongs to the technical field of petrochemical industry. Background technique [0002] In recent years, due to the increasing scarcity of petroleum resources worldwide and the increasing demand for energy in various countries, people have paid more and more attention to the utilization of residual oil. As a kind of decarbonization technology, residual oil coking process has the advantages of low investment and low operating cost, so it has been widely developed. [0003] Coking distillate oil (coking naphtha, coking diesel oil, coking wax oil) has high olefin content, high content of sulfur, nitrogen, silicon and other heteroatoms, and poor stability. It cannot be used directly as a product, or even directly as a feed for downstream devices. In order to make the coker distillate meet the end product standard or meet the feed requirements of downstream units,...

AI Technical Summary

Problems solved by technology

But this method needs to add a reactor, and the operation is complicated

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