Multi-section boiling bed residual oil hydrogenation process method

Abstract

The invention discloses a multi-section boiling bed residual oil hydrogenation process method, which comprises the following steps of: mixing a hydrocarbon raw material with hydrogen, and feeding a mixture into a reactor from the bottom of a boiling bed reactor; and reacting under a hydrogenation treatment condition, wherein the boiling bed reactor comprises two or more internal circulation regions; and each internal circulation region is provided with different operation sections respectively. In the invention, a plurality of internal circulation regions are formed in the boiling bed reactor, and a plurality of different operation sections are formed, so that the entire boiling bed reactor is more flexible to operate, reasonable matching of the property of a reaction physical flow, operating conditions and catalyst performance can be realized, the activity of a catalyst is brought into full play, the yield of light oil is increased, the product quality is enhanced.

Description

technical field [0001] The present invention relates to a multistage ebullating bed residual oil hydrogenation process, specifically a process in which a plurality of different operating sections are formed in the same ebullating bed reactor, and hydrocarbon raw materials are hydrogenated and converted in the operating sections using different operating conditions . Background technique [0002] Ebullated bed hydrogenation is a three-phase reaction process of gas, liquid and solid. After the hydrocarbon feedstock and hydrogen are mixed, they enter the high-pressure chamber of the ebullated bed reactor from the bottom of the reactor in an upflow mode, and then flow upward along the axis of the reactor through the gas-liquid distribution plate. Enter the effective reaction zone of the ebullated bed reactor. The solid catalyst particles in the reactor bed are lifted by the upward gas-liquid flow velocity, maintaining the catalyst particles in a random boiling state. The ideal...

AI Technical Summary

Problems solved by technology

The shortcoming of the present invention is: because divider is used to divide reactor into different reaction section, then need to form the effective separation of solid and gas-liquid mixture in the upper part of different reaction section, otherwise catalyst will block the channel on distribution plate, this will need to increase separation Space or additional separation equipment, which limits the catalyst expansion ratio, reduces the effective catalytic reaction space, increases the difficulty of operation, and wastes the effective reaction volume

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