Residue hydrocracking device

Abstract

The present invention discloses a residue hydrocracking device, and relates to the technical field of petrochemical engineering. The residue hydrocracking device comprises a reactor cylinder, a driving mechanism is arranged at the bottom of an inner cavity of the reactor cylinder, the outer side of the driving mechanism is sequentially sleeved with a feeding mechanism and a vibrating mechanism from bottom to top, a catalyst distributing and containing mechanism is arranged at the top of the driving mechanism, and a disturbance mechanism is arranged at the top of the catalyst distributing and containing mechanism. According to the invention, catalyst particles are more uniformly distributed when being kept in a boiling state, meanwhile, the influence on the catalyst particles when the flow speed of a gas-liquid mixture is too high or the movement direction is changed can be reduced, and the situation that the overall reaction rate is reduced due to excessive accumulation of local catalyst particles can be avoided; in addition, in the reaction process, the residual oil raw material can be better mixed with hydrogen, and the reaction effect is further improved.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a residue hydrocracking device. Background technique [0002] Residual oil hydrotreating and cracking is the most reasonable and effective method to solve the deep processing of heavy oil. The existing residual oil hydrogenation technology is divided into four types: fixed bed hydrogenation, moving bed hydrogenation, suspension bed hydrogenation and ebullating bed hydrogenation Type, in the residual oil ebullating bed hydrogenation process, the raw material is mixed with hydrogen and enters from the bottom of the reactor. In the reactor, the catalyst particles are brought into a boiling state by means of liquid lifting and gas agitation. It has the following process characteristics: 1. Strong raw material adaptability; 2. The temperature in the reactor is uniform, and the mass and heat transfer effects are good; 3. The catalyst can be added online to ensure constant produc...

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Problems solved by technology

[0004] However, after the above-mentioned device is actually used by those skilled in the art, it is found that it still has some shortcomings. It is obvious that the catalyst particles inside the device need to rely on the gas-liquid mixture to maintain a boiling state. Therefore, when the catalyst is in a boiling state, when the local gas When the flow rate of the liquid mixture is too fast or the direction of movement changes, it is very easy to cause too much accumulation of local catalyst particles. Because there are too many catalyst particles in this area, the amount of gas-liquid mixture will inevitably decrease, which will lead to a decrease in the overall reaction rate.

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