Ebullated bed hydrogenation reactor and method of use

Abstract

The present disclosure relates to a fluidized bed hydrogenation reactor and a method of using the same, and provides a fluidized bed hydrogenation reactor, comprising: a pressure-bearing shell (3), a gas-liquid-solid three-phase gas disposed in the upper space of the pressure-bearing outer shell a cyclone separator, a non-return cone (12) arranged at the bottom of the gas-liquid-solid three-phase cyclone separator, a descending liquid-phase product outlet pipe (14) arranged in the middle of the pressure-bearing shell, and The gas phase outlet (7), the liquid phase outlet (15) and the gas-liquid mixed phase inlet (1) are arranged on the pressure-bearing shell. Also provided is a method for using the above ebullated bed hydrogenation reactor.

Description

technical field [0001] The present disclosure belongs to transformative clean energy key equipment technology, in particular to a fluidized bed hydrogenation reactor and a method for using the same. Background technique [0002] Ebullated bed reactor is a gas-liquid-solid three-phase fluidized bed reactor, which is widely used in hydrogenation process because of its pressure drop, not easy to block, and long-term operation. Due to its unique structure and operation mode, the ebullated bed reactor has the following advantages: ① The operation is flexible and can be operated at high or low conversion rate; ② The catalyst can be recovered or added from the reactor periodically, and the 30% to 50% expansion of the catalyst bed through the circulating pump to ensure that there is enough free space between the solid particles of the catalyst; it can avoid the solid particles entrained by the raw materials or generated during the reaction process. During the process of crossing th...

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Problems solved by technology

The three-phase cyclone separator includes the sleeve structure of the inner cylinder and the outer cylinder, both of which are open structures. The upper part of the inner cylinder and the outer cylinder is an inverted truncated cone structure, and the lower part is an upright truncated cone structure. The operation is flexible. The structure is simple and the catalyst storage capacity is large, but it cannot realize the fully mixed flow operating conditions

The three-phase cyclone separator has a simple structure and only has an inner cylinder and an outer cylinder, which can meet the separation of gas-liquid-solid three-phase in a small-scale and low-flow state, and has a certain effect, but it is difficult to meet large-scale and efficient separation. Enhanced Cyclone Separation

Chinese utility model patent CN207929188U is a supplement and extension of CN 108148621A. Similarly, the existing problem is that the enhanced driving force of cyclone separation is insufficient, and the separation accuracy and efficiency are not high

According to the true density of catalyst particles is 1500kg / m 3 Calculated, the specific surface area of ​​the catalyst with a particle size of 0.2mm is 0.02m 2 / g, which cannot meet the requirements for the use of small-diameter catalyst particles

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