Fluidized bed hydrogenation reactor and use method thereof

Abstract

The invention relates to a fluidized bed hydrogenation reactor and a use method thereof, and provides a fluidized bed hydrogenation reactor which comprises a pressure-bearing shell (3), a gas-liquid-solid three-phase cyclone separator arranged in the upper space of the pressure-bearing shell, a downcomer type liquid phase product guide-out pipe (14) arranged in the middle of the pressure-bearing shell, and a gas phase outlet (7), a liquid phase outlet (15) and a gas-liquid mixed phase inlet (1) which are formed in the pressure-bearing shell. The invention also provides a use method of the fluidized bed hydrogenation reactor.

Description

Technical field [0001] The present disclosure belongs to the transformant clean energy key equipment technology, and specific to a boiling bed hydrogenation reactor and method thereof. Background technique [0002] The boiling bed reactor is a gas-liquid solid three-phase fluidized bed reactor, which is widely used in a hydrogenation process due to its lower pressure reduction, not easy to block. Boiling bed reactors have their own unique structural and operating modes to have the following advantages: 1 Flexible operation, can be operated at high or low conversion; 2 can periodically recover or add catalysts from the reactor, without stopping In the case, the reaction activity of the catalyst can be maintained; 3 through the circulation pump to expand 30% to 50% to ensure a sufficient free space between the catalyst solid particles; the solid particles produced by the raw material entrain or reaction process can be avoided There is a problem of accumulation, bed blockage or bed ...

AI Technical Summary

Problems solved by technology

The three-phase separator consists of inner cylinder and outer cylinder with sleeve structure, both upper and lower are open structures, the upper section of the inner cylinder and outer cylinder is an inverted frustum-shaped structure, and the lower section is an upright frustum-shaped structure, with large operating flexibility and simple structure , the catalyst storage capacity is large, but it cannot realize the fully mixed flow operating conditions

The three-phase 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, high-efficiency separation, and cannot strengthen the cyclone. flow separation

Chinese utility model patent CN 207929188U is a supplement and extension of CN 108148621A. Similarly, the 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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