Flow field turbulator

Abstract

The invention discloses a flow field turbulator belonging to the field of petrochemical engineering equipment. The flow field turbulator comprises a river diversion grating, a rectification grating, an agitator arm and a propeller agitator, wherein the river diversion grating and the rectification grating are formed by the angled intersection of a group of parallel rib plates and a group of parallel clapboards with same height; the agitator arm is fixed in the center of the river diversion grating; and the propeller agitator is installed on the lower end of a pillar. The flow field turbulatorhas the advantages of simple structure and flexible rotation and realizes rotation by the impact force of upcurrent without power driving. In addition, the flow field turbulator realizes an upcurrentstate and is favorable for separating a gas phase, a solid phase and a liquid phase without affecting the flow state of a bed layer below the turbulator. The flow field turbulator can be widely used in fields of petrochemical engineering, environmental protection and the like and is especially suitable for preliminary separation of the gas phase, the solid phase and the liquid phase in a fluidized bed reactor.

Description

technical field [0001] The invention relates to a flow field spoiler, which is used for destroying the flow state of the flow field without affecting the bed flow state below the spoiler, and belongs to the field of petrochemical equipment. The flow field spoiler of the present invention is suitable for realizing the disturbance of the local flow state in the reactor bed under the condition of no driving force, and can be widely used in the fields of petrochemical industry and environmental protection, and is especially suitable for the reaction in ebullating bed The top of the device changes the flow state of the bed, so as to realize the initial separation of gas, solid and liquid three phases. Background technique [0002] The ebullated bed reactor is a three-phase fluidized bed of gas, liquid and solid, which can process heavy and low-quality feedstock oil with high metal and high asphaltene content. It has the advantages of small pressure drop, uniform temperature distr...

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Problems solved by technology

[0003] A typical fluidized bed process is described in US Re 25,770, but this process method has the following disadvantages in practical application: the amount of catalyst storage in the reactor is small, and the space utilization rate of the reactor is low; the maintenance cost of the circulating oil pump is high, and once Malfunction and damage of the circulating oil pump will cause the catalyst to sink and accumulate, resulting in the forced shutdown of the device; the liquid product in the reactor stays for too long under non-catalytic hydrogenation conditions, and it is easy to undergo secondary thermal cracking reaction at high temperature Coking reduces product quality

The three-phase separator introduced in this patent has a small operating flexibility at the outlet of the three-phase separator and the outlet of the reactor. The catalyst separated by the three-phase separator will stick to the outlet of the catalyst, and the phenomenon of cross-gas is likely to occur at the outlet of the catalyst, which affects the The separation effect of the three-phase separator, and the catalyst brought out is easy to block the downstream device, which is not conducive to the long-term operation of the device

[0005] Even if a three-phase separator is used to achieve the three-phase separation of gas, solid and liquid, the operation of this component requires that the linear velocity of the three-phase gas, solid and liquid in the separation section be equal to or lower than the linear velocity of the reactor, so the reactor is installed with a cylinder of a three-phase separator The diameter of the body is larger than the diameter of the reactor, which increases the volume of the reactor. Because the reactor is a high-temperature and high-pressure equipment, the diameter-expanding structure brings difficulty to equipment manufacturing.

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