RU2267708C1 - Reactor for catalytic purification of gaseous ejections - Google Patents

Abstract

FIELD: the invention refers to industrial ecology and may be used for flameless purification of ejections of industrial enterprises.

SUBSTANCE: the reactor for catalytic purification of gaseous ejections has a cylindrical body, which interior surface is covered with a catalyst with a source of infrared radiation placed in the body, a tube heat exchanger located in the lower part of the body, a turbine mixer located in the upper part of the body and additionally - a permeable cylindrical drum out of the catalyst so that the axles of the symmetry of the drum and body coincide. The drum embraces the mixer and the source of infrared radiation fulfilled in the shape of a six-ends star is installed in the middle of the body so that its flatness is perpendicular to the axle of the symmetry of the reactor. The drawing off socket is connected with the tube space of the heat exchanger, and the feeding socket is located so as to provide heating of gaseous ejections with the heat of the gases moving out of the reactor.

EFFECT: increases effectiveness of purification of gaseous flow and reduces power inputs for heating the gas flow.

1 dwg

Description

The invention relates to industrial ecology and can be used for flameless cleaning of industrial emissions.

A device for the catalytic combustion of waste gases, comprising a cylindrical body with bottoms, inside which a heat exchanger is installed, consisting of a fixed tube sheet, tubes and a floating tube sheet, a catalytic element is installed between the sheets, a convex elliptical shape has a perforated bottom with a central axial hole and a guide plate (USSR author's certificate No. 1877242, Cl. 2 F 23 G 7/06, publ. 05.12.76. Bull. No. 45).

The closest analogue is a reactor for the catalytic purification of gaseous emissions, containing a cylindrical body, the inner surface of which is coated with a catalyst installed at the inlet of the body, a screw swirl and a coaxial infrared radiation source and disk elements with guide edges whose surfaces face the inlet and outlet the housing is coated with a catalyst (RF patent No. 2097656, CL. 6 F 23 G 7/06, publ. 11/27/97. Bull. No. 33).

The disadvantage of this device is the low cleaning efficiency of gaseous emissions, the lack of heat recovery of the outgoing gas stream.

The objective of the invention is to increase the efficiency of purification of gaseous emissions, heat recovery of the leaving purified gas stream and reduce energy consumption for heating the gas stream.

The problem is solved in that the reactor for the catalytic purification of gaseous emissions contains a cylindrical body, the inner surface of which is coated with a catalyst with an infrared radiation source located in the body, new is that the reactor additionally contains a tubular heat exchanger located in the lower part of the body, a turbine mixing device, located in the upper part of the housing, and an additionally permeable cylindrical shell of catalyst installed in the upper part of the casing so that the symmetry axis of the shell and the shell coincide, and the shell covers the mixing device, and the infrared radiation source is made in the form of a six-pointed star, is installed in the middle of the shell so that its plane is perpendicular to the symmetry axis of the reactor, the outlet pipe communicates with the annular space of the heat exchanger, and the supply pipe is positioned so as to provide heating of gaseous emissions with heat from the reactor exhaust gases.

This allows you to increase the efficiency of cleaning the gas stream due to additional heating in the heat exchanger, increasing the surface of the catalyst and the likelihood of contact with it provided by the turbine mixing device. The heat recovery of the exhaust gas stream reduces thermal pollution of the environment.

The drawing shows a diagram of the proposed reactor.

The reactor for the catalytic treatment of gaseous emissions contains a cylindrical body 1, the inner surface of which is coated with a catalyst, in which an additional tubular heat exchanger 2 is installed in the lower part of the housing 1, an infrared radiation source 3 made in the form of a six-pointed star placed in the middle of the housing 1 so that the plane of the infrared source is perpendicular to the axis of symmetry of the reactor, the turbine mixing device 4, located in the upper part of the housing 1, driven in squeezing by an electric motor 5, and an additional permeable cylindrical shell from the catalyst 6, located in the upper part of the housing 1 so that the axis of symmetry of the shell 6 and the housing 1 match, and the shell 6 covers the mixing device 4, gaseous emissions are fed into the reactor through the supply pipe 7, and removed through branch pipe 8.

The reactor operates as follows.

Gaseous emissions are fed into the reactor through a supply pipe 7 into a cylindrical body 1, while they are heated in a tubular heat exchanger 2 located in the lower part of the reactor with exhaust gases. The gas stream enters the upper part of the reactor, where it is additionally heated by an infrared radiation source 3 made in the form of a six-pointed star, which ensures uniform heating of all incoming gas. The turbine mixing device 4, located in the upper part of the housing 1 and driven by an electric motor 5, creates a turbulence of the gas flow, thereby increasing the likelihood of gas contacting with the catalyst, made in the form of a permeable cylindrical shell 6. After passing through the permeable shell 6 of the catalyst, gas the stream is cleaned on the catalyst, which is lined with the reactor vessel 1. The purified gas enters the annulus of the heat exchanger 2, where the heat of the exhaust gases is recovered, and then removed through the outlet pipe 8.

So, the proposed device allows you to:

- increase the efficiency of cleaning gaseous emissions;

- recover the heat of the outgoing gas stream;

- reduce energy consumption for heating the gas stream.

Claims (1)

A reactor for the catalytic purification of gaseous emissions, comprising a cylindrical body, the inner surface of which is coated with a catalyst with an infrared radiation source located in the body, characterized in that the reactor further comprises a tubular heat exchanger located in the lower part of the body, a turbine mixing device located in the upper part of the body, and additionally, a permeable cylindrical shell of catalyst mounted in the upper part of the housing so that the axis of symmetry of the shell and the shells coincide, and the shell covers the mixing device, and the infrared radiation source is made in the form of a six-pointed star, is installed in the middle of the shell so that its plane is perpendicular to the axis of symmetry of the reactor, the outlet pipe is in communication with the annular space of the heat exchanger, and the supply pipe is located in this way to provide heating of gaseous emissions with heat from the reactor exhaust gas.