Solid particle ejecting distributor and online decoking device

Abstract

The invention relates to a solid particle ejecting distributor and an online decoking device. The solid particle ejecting distributor and the online decoking device mainly solve the problems that in the prior art, when a solid particle ejecting distributor is used for ammoxidation, adhering and accumulated coking materials in a gas cooler tube nest are difficult to remove, the resistance of a pipeline of the cooler tube nest is increased, the operation pressure of a reactor is increased, the reaction performance of catalysts is lowered, device consumption is increased, and an operation cycle is shortened. The technical scheme that the body of the solid particle ejecting distributor is cylindrical or conical or spherical or square or polygonal or in the shape of a branch, at least one of the bottom and the side face of the ejecting distributor is provided with a guiding hole or a guiding pipe, the included angle between the center line of the guiding hole or the guiding pipe in the bottom and the perpendicular axis of the distributor is 0-80 degrees, and the included angle between the center line of the guiding hole or the guiding pipe of the side face and the perpendicular axis of the distributor is 1-90 degrees is adopted, the problem is well solved, and the solid particle ejecting distributor and the online decoking device can be used in an industrial plant for online decoking of an ammoxidation gas cooler.

Description

technical field [0001] The invention relates to a solid particle injection distributor and an online coke cleaning device, in particular to a solid particle injection distributor for an online coke cleaning device. Background technique [0002] In the field of propylene ammoxidation to produce acrylonitrile, because the high-temperature reaction gas generated by the reaction contains easily polymerizable compounds such as acrylonitrile, hydrocyanic acid, and acrolein, the polymerization reaction is likely to occur during the cooling process of the reaction gas, and the resulting polymer and The catalyst dust brought out by the fluidized bed reactor adheres and accumulates in the tubes of the reaction gas cooler. With the prolongation of the operation time, the scale layer on the inner wall of the tubes gradually increases, and the channels in the tubes gradually decrease, resulting in the blockage of the tubes. , Increase pipeline resistance, when the scale layer reaches a c...

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is that in the cooler of the ammoxidation production acrylonitrile reaction system existing in the prior art, the solid particle injection distributor is not involved, causing the solid particle distribution to be uneven, resulting in Adhered and accumulated coke is difficult to remove, the resistance of the tube pipe increases, the operating pressure of the reactor increases, the operating condition of the reaction system deteriorates, the catalyst reaction performance decreases, the device consumption increases, and the operating cycle is shortened. A new solid Particle injection distributor, which has the advantages of smooth solid particle injection, uniform distribution, stable cooler tube resistance and operating pressure of the reaction system, stable catalyst reaction performance, maintenance of device consumption level, and extended device operating cycle.

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