RU169758U1 - Radial type reactor for catalytic dehydrogenation of hydrocarbons - Google Patents

Abstract

The invention relates to devices for the catalytic dehydrogenation of hydrocarbons, in particular to radial type reactors and can be used in the chemical and petrochemical industries. The radial type reactor for catalytic dehydrogenation of hydrocarbons contains a cylindrical body, a perforated cylinder coaxially mounted in it with supporting lattices located around it, inside of which a cowl is placed in the form of a cone-shaped body of revolution, moreover, a perforated cylinder, supporting sieves The ki and the vertical wall of the cylindrical body form a chamber for placing the catalyst, in the lower part of the cylindrical body there is a fitting for introducing raw materials, and in its upper part there is a nozzle for discharging the product mixture. mixture, in addition, simplification of the design of the reactor is achieved, which allows to increase the overhaul life of the reactor and increase the life of the catalyst.

Description

The utility model relates to devices for the catalytic dehydrogenation of hydrocarbons, in particular to radial type reactors, and can be used in the chemical and petrochemical industries.

The prior art known reactor of the radial type for carrying out catalytic processes (RF patent No. 21116825, IPC B01J 8/04, published 08/10/1998), containing a perforated container for accommodating the catalyst, the outer and inner walls of which are made of shaped metal elements forming cylinders and fastened together by rigidly horizontal elements made in the form of rings.

The disadvantage of this reactor is that the design of the reactor does not provide a uniform distribution of the flow of the reaction mixture throughout the volume of the catalyst, which reduces the efficiency of the process and affects the quality of the final products.

Known radial type reactor for the catalytic dehydrogenation of hydrocarbons (RF patent No. 2154523, IPC B01J 8/02, published 08/20/2000), containing a cylindrical body, coaxially mounted in it an annular basket with a catalyst made of perforated cylinders, inside of which there is a central body rotation.

A reactor for catalytic dehydrogenation of hydrocarbons is known (RF patent No. 2188069, IPC B01J 8/02, published August 27, 2002), comprising a cylindrical body, a ring basket with a catalyst coaxially mounted in it, made of internal and external perforated cylinders, and a cowling in in the form of a cone-shaped body of revolution located in the inner perforated cylinder.

A common drawback of the last two reactors is that a uniform distribution of the reaction mixture flow over the entire volume of the catalyst loaded into the annular basket is achieved due to the complex shape of the cone-shaped fairing and the use of an external perforated cylinder, which complicates the design of the reactor.

The objective of the utility model is to simplify the design of the reactor.

The technical result of the utility model is to increase the operational reliability of the reactor.

The problem is solved and the technical result is achieved by a radial type reactor for the catalytic dehydrogenation of hydrocarbons, containing a cylindrical body, a perforated cylinder coaxially mounted in it with support lattices located around it, inside which a cowl is arranged in the form of a cone-shaped body of revolution, moreover, the perforated cylinder, support lattices and a vertical wall a cylindrical body form a chamber for accommodating the catalyst, in the lower part of the cylindrical body er for input of raw materials, and in its upper part a fitting is made for outputting the product mixture.

The essence of the utility model is illustrated by the drawing, which shows a schematic diagram of the reactor.

The reactor comprises a cylindrical body 1 in which a perforated cylinder 2 is coaxially mounted with supporting grids 3 located around it, a cowl 4 in the form of a cone-shaped body of revolution is placed inside the cylinder 2. The perforated cylinder 2, the support grilles 3 and the vertical wall of the cylindrical body 1 form a chamber 5 for accommodating the catalyst. In the lower part of the cylindrical body 1. made fitting 6 for input of raw materials, and in its upper part made fitting 7 for outputting the product mixture.

The device operates as follows.

The reaction mixture through the nozzle 6 enters the perforated cylinder 2, flows around the cone-shaped body of revolution 4 and through the perforation holes of the cylinder 2 enters the chamber 5, passing through the catalyst layers evenly placed on the support grids 3, then it is discharged through the nozzle 7 for further processing. The number of support grids is selected in the particular case of the reactor design depending on its size and the type of catalyst used, so that the thickness of the catalyst layer is from 100 to 3000 mm.

The use of support grids ensures uniform catalyst placement in the reactor chamber and uniform distribution of the reaction mixture flow. The proposed reactor design, due to its simplicity, allows to increase the overhaul life of the reactor and increase the life of the catalyst.

Claims (1)

A radial type reactor for the catalytic dehydrogenation of hydrocarbons, comprising a cylindrical body, a perforated cylinder coaxially mounted therein with support gratings arranged around it, a cowl in the form of a cone-shaped body of revolution located inside it, the perforated cylinder, support gratings and a vertical wall of the cylindrical body forming a chamber for placement catalyst, in the lower part of the cylindrical body made fitting for the input of raw materials, and in its upper part made piece to output product mixture.

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