RU1797988C - Reactor with mobile layer of catalyst - Google Patents

Description

An insignificant part of the reaction products entering the annular channel 13 moves down it. Passing through the narrowing discharge channel 16 and perforating holes 17, is led out through the nozzle 5 from the reactor.

Fresh catalyst is fed through the feed pipes 9 into the catalyst chamber 6, and the spent catalyst is withdrawn from it through the annular discharge channel 11 and the discharge pipes 13.

In the catalyst chamber 6, along with the catalyst particles, there are mechanical impurities coming together with the gas-oil mixture and catalyst fines resulting from the destruction of the catalyst particles during their interaction with each other during the downward movement of the catalyst bed. These solid particles are blown out of the catalyst chamber by gas flow into the annular channel 14, where they are deposited into the discharge channel 16. The deposited solid particles in the discharge channel 16 are moved by gravity to the perforating holes 17. Then, through these openings, they are blown by the reaction products into the nozzle 5, and through it are withdrawn from the reactor.

Each loading tube 9 supplies the catalyst with a certain cross-sectional area of the catalyst chamber 6, therefore, its location is determined by the condition of its maximum approximation to each point of the fed region. In this regard, it is advisable to use the least squares method 3 to find the location of the loading tubes 9.

In order to prevent the formation of stagnant zones in the moving catalyst bed (the most probable places where these zones can be formed are the areas near the outer 7 and inner 8 shells), a false bottom 10 is installed at the bottom of the catalyst chamber 6,

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5

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providing complete gathering of the material in the annular channel 11.

Thus, the proposed apparatus in comparison with the prototype allows to increase the efficiency of its operation due to the uniform distribution of the gas-oil mixture of the catalyst in the catalyst chamber, as well as the elimination of stagnant zones in the moving catalyst bed.

Formula A from Breteni

Claims (2)

1. A reactor with a moving catalyst bed, comprising a vertical casing with fittings for introducing a gas-raw material mixture and outputting reaction products, a catalyst chamber formed by coaxial outer and inner shells, loading and unloading pipes, characterized in that, in order to increase work efficiency by eliminating the volume of the reactor stagnant zones during the movement of the catalyst and its uniform distribution in the catadisation chamber while increasing the uniformity of gas distribution, the inner shell of the cat lizatornoy reactor chamber is further provided with a central discharge pipe with a guide funnel, a fixed perforated at its lower end connected with the output fitting of the reaction products. 2. The reactor according to claim 1, characterized in that the catalyst chamber is provided with a false bottom, and the loading tubes are installed uniformly around a circle, the radius of which is determined from the ratio .40 PC  JL (l) 3 N- $ ln r  . HDV where R is the radius of the outer shell; g is the radius of the inner shell; N is the minimum number of loading 45 pipes. . juachaphegg L dbuittWtijjjsx nnxaji 886 / .6II FIG. 2