Catalytic cracking reactor capable of being flexibly adjusted
A catalytic cracking and reactor technology, applied in the direction of catalytic cracking, cracking, chemical instruments and methods, etc., to achieve the effect of reducing olefin yield, reducing coke and dry gas, and improving cracking capacity
Pending Publication Date: 2020-10-09
LUOYANG LEBANG PETROCHEM EQUIP
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Problems solved by technology
[0003] In order to overcome the deficiencies in the background technology, the present invention discloses a flexible and adjustable catalytic cracking reactor, which reduces overcracking and incomplete reaction and improves product yield
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Embodiment 1
[0037] Embodiment 1, a kind of flexibly adjusted catalytic cracking reactor, when in use, at first the regenerated catalyst enters the storage tank A5 from the regeneration inclined pipe A7 and passes through the fluidization steam A4, and the catalyst of the storage tank A5 is fluidized through The heat taker A13 lowers the temperature of the catalyst, the catalyst enters the pre-lift pipe A8, passes through the pre-lift steam pipe A1 and the passivation gas pipe A2, and lifts the catalyst to the riser pipe A10 inside the catalyst reaction tank A11, and finally reaches the nozzle A12 From the original riser catalyst density distribution diagram and the current riser catalyst density distribution diagram, it can be seen that the catalyst distribution in the reaction section obviously moves to the center, and the oil and gas particles ejected from the feed nozzle contact and react with the catalyst here, and the oil and gas The distribution of particle density is conical and fan...
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The invention discloses a catalytic cracking reactor capable of being flexibly adjusted. Fluidized steam sprayed out of a fluidized steam inlet pipe in a storage tank enables a fed catalyst to be in dense-phase fluidization; the catalyst can be uniformly lifted to the reaction section of a lifting pipe by adjusting the storage amount of the storage tank during the discharging of a regeneration inclined pipe; the storage tank plays a role in improving the lifting capacity of the catalyst, namely adjusting and improving the catalyst-oil ratio of a catalytic cracking reaction; atomized oil gas sprayed by a spray head is matched with the distribution area of catalyst density; nozzle extension length, nozzle injection angle and arc sector angle are consistent with the catalyst density. The concept of a traditional riser reactor is changed; on the basis of a gas-solid two-phase flow theory and the distribution rule of the catalyst, the oil gas is consistent with the catalyst in the reactionsection, the dense-phase region of the catalyst is consistent with an oil gas injection region, and therefore, the oil gas and the catalyst are in full contact reaction, the phenomena of over-crackingand incomplete reaction are reduced, and the product yield is increased.
Description
technical field [0001] The invention relates to the technical field of catalytic cracking devices, in particular to a flexible adjustable catalytic cracking reactor. Background technique [0002] The catalytic cracking unit is one of the important units in the petrochemical industry. It re-reacts the low-quality residual oil slurry into the diesel gasoline we need, etc. The operation of the fluidized catalytic cracking unit is mainly on the fluidization of the catalyst, such as running the catalyst. Or pipeline vibration, bridging, failure to increase the ratio of agent to oil, etc., are all problems with the fluidization of the catalyst. Whether catalytic cracking can produce qualified products depends on the process conditions such as catalyst activity and reaction temperature. Contents of the invention [0003] In order to overcome the deficiencies in the background technology, the invention discloses a flexibly adjusted catalytic cracking reactor, which reduces overcr...
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IPC IPC(8): C10G11/18B01J8/24B01J8/18
CPCC10G11/18B01J8/24B01J8/1818
Inventor 于兴辉李胜利李国华
Owner LUOYANG LEBANG PETROCHEM EQUIP