SU1323127A1 - Reactor - Google Patents

Abstract

The invention relates to the design of reactors for carrying out processes involving the evolution of gases, in particular liquid-solid catalytic systems, and allows intensifying the process by improving the degassing of reactants and increasing the efficiency of mixing. The reactor contains a vertically arranged cylindrical body 1 with a heat exchange jacket 2, a circulation pipe 3 installed coaxially in it, a shaft 4 placed along the axis of the body 1 with a mixing device 5 and a rotor 6 and a drive 7. The rotor 6 is connected in the lower part with a suction nozzle 8, and the upper — with tubes 9 which are so figuratively installed around VA.AH. At the same time, the circulation pipe 3 is provided with a rotor 10 and a U-shape divider 10 arranged against the upper ends of the tubes 9 and executed as a surface. the method, the upper ends of the tubes 9 are made in the form of tapering conical, and the suction inlet 8 - in the form of a Venturi tube. At the same time, nepeMOiniiiiaio-1e device 5 is installed in the neck of the suction nozzle 8. In addition, the bottom of the case is made in the form of a rotating surface of the s-mold. 1 3.p. f-ly, 2 ill. f (/) /

Description

113

The invention relates to the design of chemical reactors and can be used to carry out various processes involving the evolution of gases, in particular those catalytic in a liquid-solid system, for example, for dealkylation of ionol to 2-tert-butyl-4-methylphenol-semi - product in the production of antioxidant.

The purpose of the invention is to intensify the process by improving the degassing of the reactants and increasing the mixing efficiency.

Figure 1 shows the reactor, a longitudinal section; figure 2 - section

A-A in FIG.

The reactor contains a vertically arranged cylindrical housing 1 with a heat exchange jacket 2, a circulation pipe 3 installed coaxially in it, a shaft 4 arranged along the axis of the housing 1 with a mixing device 5 and a suction device 6 and an actuator 7.

The suction device 6 is made in the form of a rotor consisting in the lower part of the suction inlet 8, and in the upper part from the 4 cone-shaped tubes 9 which are mounted around the shaft and communicating with it.

The circulation pipe 3 is provided with a reflector 1 O located opposite the upper ends of the tubes 9 and made in the form of a U-shaped surface of rotation.

The upper ends of the tubes 9 are made in the form of tapering conical nozzles, and the intakes of the nozzle 8 are in the form of a Venturi tube. The mixing device 5 is installed in the neck of the suction nozzle 8.

The bottom of the reactor housing 1 is made in the form of a rotating surface of a bo-shaped form.

 carrying out catalytic processes in the liquid – solid system; tubes 9 with perforated bases are filled with granulated catalyst. In addition, a layer of catalyst can be additionally deposited on the walls of the circulation pipe 3.

The reactor works as follows.

When the actuator 7 rotates the shaft 4 with the rotor 6, the liquid reagents are sucked through the nozzle 8 and under the action of centrifugal inertia forces raise

0

five

0

one

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-five

0

five

five

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with tubes 9 with granular catalyst. The gas-liquid mixture is carried by streams from the catalyst bed and is ejected through the tapering conical nozzles of the tubes 9, falling in the form of thin jets onto the divider 10 of the circulation pipe 3.

Due to the streamlined shape of the dissector 10, the fluid flow is split into two parts, uniformly wrapping in the form of thin films 11 and 12, respectively, the inner and outer walls of the circulation pipe 3. This forms a large gas-liquid interface and intensive degassing of the reaction mixture occurs.

The circulation of the liquid phase flows through the layer of solid catalyst is promoted by a mixing device 5 installed in the throat of the suction nozzle 8 made in the form of a Venturi tube, and in the form of

the shape of the surface of rotation of the bottom of the housing 1.

The effective mixing of the liquid reactors is carried out not only by the transfer device 5, but also by the rotor 6, the catalytic tubes 9 of which continuously feed the liquid phase to different parts of the circulation pipe 3, which contributes to the turbulization of the medium.

With the same dimensions, the proposed reactor makes it possible to increase the liquid-gas interface two or more times compared to the known one and, consequently, to increase the intensity of the processes that occur with the evolution of gases.

Claims (3)

1. A reactor for carrying out processes with gas evolution, comprising a vertical cylindrical body with a heat exchange jacket, a circulation tube coaxially placed inside it with a suction nozzle and a reflector, a shaft mounted along the body axis with a mixing device placed in the suction nozzle, bottom and an actuator, characterized in that, in order to intensify the process by improving the degassing of the reactants and increasing the mixing efficiency, the suction nozzle is fixed on the shaft and provided with an on-board permanently installed around the shaft there are tubes filled with a catalyst, forming a conical surface, with the upper ends of the tubes made in the form of nozzles, the reflector is U-shaped, one end of which is fixed on the upper end of the circulation tube and the other is opposite the nozzles of the tubes. 2. Pop-1 reactor, characterized in that the suction inlet is made in the form of a Venturi tube, while the mixing device placed in her neck. 3. Reactor in PP, 1 and 2, characterized in that the bottom of the reactor is made in a y-shape. Editor I. Casard Compiled by A. Telesnitsky Tehred A. Kravchuk Proofreader V. But ha Order 2893/7 Circulation 510 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5  - - - --- - - - - - -. Production and printing company, Uzhgorod, Projecto st., 4 srig2