A kind of internal circulation ebullating bed reactor

Abstract

The invention discloses an inner circulation fluidized bed reactor. The reactor includes a shell, and the shell includes a three-phase separation section and a reaction section from top to bottom; it also includes a three-phase separation component arranged in the three-phase separation section; a flow guide is set in the reaction section Cylinder; a gas uniform distribution device is arranged under the opening of the lower end of the flow guiding cylinder, at least one material distributor is arranged in the inside of the guiding cylinder and above the gas uniform distribution device, and on the outer wall of the upper opening of the guiding cylinder A number of baffles are set; a baffle plate arranged above the guide structure is also included; and a number of gas separation pipes connected with the guide structure are also included. The above-mentioned reactor produces directional circulation in the reactor, which saves energy in the process; fresh material and circulating oil are fed in different areas, which strengthens the circulation flow mode; strengthens oil-gas mixing and gas-liquid distribution, and gas disturbance can effectively avoid the dead zone at the bottom of the reactor. Generated, and can act as a buffer to reduce the impact on the distribution plate.

Description

technical field [0001] The invention belongs to the field of preparation of ebullating bed reactors, in particular to an inner circulation ebullating bed reactor. Background technique [0002] The ebullated bed reactor is a gas-liquid-solid three-phase fluidized bed reactor, which has many advantages when applied to hydrogenation reaction: it can be applied to heavy and inferior raw materials with high metal content and high carbon residue value; the temperature in the reactor is uniform and easy to control , the pressure is reduced and constant; the catalyst can be loaded and unloaded online to keep the performance of the catalyst stable, which can make the reaction process continuous; it can realize a longer operation period and a higher conversion rate, etc. [0003] The existing industrial ebullating bed hydrogenation technology mainly includes H-Oil process and LC-Fining process. In the above two processes, a circulation cup is set in the ebullating bed reactor for gas-...

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of processing difficulty, high manufacturing cost, dead zone in the reactor and poor internal circulation effect in the ebullated bed reactor in the prior art, thereby providing an easy-to-process, directional Internal circulation ebullating bed reactor with stable circulation, enhanced circulation and reduced dead zone

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