Fluid bed reactor used for gasoline desulfuration

Abstract

The invention provides a fluid bed reactor used for gasoline desulfuration, which belongs to the field of petrochemical industry and is characterized in that an automatic back wash filter, a dust reduction machine, a catalyst bed, a backflow prevention distributor and an impact prevention distributor are arranged in a reactor, and the reactor is externally connected with a reductor and an acceptor. By utilizing the reactor, the filtering performance of the filter can be automatically and efficiently restored in time, thereby reducing the labor strength; catalyst particles are prevented from flowing back below the reactor, thereby enabling gas to be evenly distributed on the section of the whole reactor; the dust content of the gas is effectively reduced, thereby greatly reducing the load of the automatic back wash filter, effectively prolonging the operating period of the automatic back wash filter and reducing equipment investments and maintenance charges; the influent gas is prevented from impacting the backflow prevention distributor, thereby promoting the even distribution of the gas and improving the benefit of the reactor; and moreover, reaction gas and a catalyst flow out of different paths after entering the reactor through different paths, thereby realizing high-treatment capacity continuous operation.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, in particular to a fluidized bed reactor for gasoline desulfurization. Background technique [0002] At present, fixed-bed hydrogenation reactors are mainly used for gasoline desulfurization, and the catalysts are in a densely packed state in the reactors. The most typical fluidized bed reactor in the petrochemical plant is the riser reactor of the catalytic cracking unit, and the upper part is equipped with a quick separation component to strengthen the gas-solid separation effect of the gas and the catalyst; the gas and the catalyst in the riser reactor flow from bottom to top , the flow rate is generally 12-20m / s, which is a high-speed fluidized state. [0003] In the prior art, publication number is that the application of CN1824378A discloses the fluidized-bed reactor that is used for Fischer-Tropsch synthesis, and this fluidized-bed reactor is used for Fischer-Tropsch synthesis, and t...

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Problems solved by technology

[0003] In the prior art, publication number is that the application of CN1824378A discloses the fluidized-bed reactor that is used for Fischer-Tropsch synthesis, and this fluidized-bed reactor is used for Fischer-Tropsch synthesis, and the problem that it exists is: 1) the filter on it is Continuous operation, if the filter has problems such as excessive pressure drop, the filter will be forced to stop running, and then the entire reactor will stop working; 2) The filter is installed inside the reactor as a whole, which is not conducive to maintenance

[0004] In addition, the prior art with the publication number CN2216860 discloses a fluidized reaction device, which has the following problems: 1) the distributor at the bottom is composed of a magnetic sphere and a magnet that can generate an alternating magnetic field, and the generated gas It can only be distributed near the junction of the sphere and the cone section, and the gas cannot be evenly distributed in the entire cross-section of the reactor, which leads to low utilization of the reactor space and difficulty in expanding the processing capacity of the reactor; 2) Manual cleaning of the filter Low efficiency and high labor intensity, and relying on human subjective judgment, it is difficult to ensure timely and efficient cleaning; 3) Since there is no dust suppression facility, the dust content of the gas is high, and the filter is cleaned frequently, which further increases the labor of the operator Strength; 4) Only intermittent operation can be realized, and the receiver must be replaced when the powder received by the discharge receiver reaches the upper limit, and the operation can only be stopped during the replacement; 5) Only the fluidization of particles smaller than 40 microns can be achieved, which is Because its distributor adopts the way of magnetic sphere and conical connection, if the particle diameter is larger, it will be difficult to fall to the receiver or even get stuck on the magnetic sphere

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