SU1368023A1 - Thermocatalytic reactor - Google Patents

Abstract

The invention relates to a device for the purification of industrial gaseous wastes and allows an increase in the service life of the device. The thermocatalytic reactor contains a reaction chamber 1 with catalyst cassettes 2 and 3, a gas mixing chamber 4 with perforated tubes 5 installed in its upper part, with a tubular air heater 6 with a central channel 7 located under the reaction chamber 1 a gas burner 8 is installed, and between the burner 8 and the upper part of the heater 6 in the central channel 7 there is an air duct 9 connected to gas distribution perforated pipes 5. During operation, the reactor The gases to be cleaned are sent to the reaction chamber 1, where they are passed through the catalyst cassette 2, after which the purified stream enters the gas mixing chamber 4. Simultaneously, the short circuit gas flow in the gas mixing chamber 4 is passed through the catalyst cassette 3 In which the catalytic oxidation of toxic substances to harmless occurs. 1 Il. cl

Description

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The invention relates to the field of chemical engineering and can be used in the chemical, petrochemical, automotive and other industrial sectors.

The purpose of the invention is to increase the service life of the reactor.

The drawing shows a diagram of a thermo-catalytic reactor.

Thermocatalytic reactor contains a reaction chamber 1 with a central hole, equipped with annular catalyst cassettes 2 and 3, between which there is a gas mixing chamber 4. In its upper part there are gas distribution perforated tubes 5. Under the reaction chamber 1 there is a tubular air preheater 6 with a central channel 7, upper end which is inserted into the central opening of the catalytic chamber. A gas burner 8 is installed in the central channel 7, and between the burner and the upper part of the air heater, the central channel is provided with an air duct 9 connected to gas distribution perforated pipes connected to the gas mixing chamber A.

At the bottom of the air preheater 6 there are nozzles 10 for supplying contaminated gas and a nozzle 11 for discharging purified gases.

Thermocatalytic reactor operates as follows.

Exhaust gases containing more than 17% of oxygen are fed through nozzles 10 into the annular space of the air heater 6, where they are heated and sent to the upper part of the central channel 7, in which they are divided into two streams. One of them is fed to a gas burner 8 to heat it up to the temperature of the onset of catalytic oxidation and then to the reaction chamber 1, where it is passed through the catalyst cassette 2. It catalyzes the oxidation of toxic substances to harmless ones, as a result of which the outlet temperature from the cash register s 2 the purified gas stream is increased. The purified gas stream enters the gas mixing chamber 4. At the same time, the second gas stream from the duct 9 is fed through the perforated pipes 5, where it is mixed with the first stream. The total stream with the onset temperature of catalytic oxidation is passed through a catalyst cassette 3, in which the catalytic oxidation of toxic substances to harmless occurs. Further peeled

the gases are directed to the tube space of the air preheater 6, in which, after giving up most of their heat to the waste gases going to be cleaned, they are evacuated through pipe 11

or for the needs of production, or to the atmosphere.

Claims (1)

Claims. A thermocatalytic reactor containing a reaction chamber with 3 catalytic cassettes installed, a gas burner located in the central channel, nozzles for supplying contaminated gas and a purified gas outlet nozzle, a tubular air preheater with a central channel located under the reaction chamber, characterized in that extended service life, it is equipped with perforated gas distribution pipes, horizontally installed under catalytic cartridges and connected to central m channel air preheater duct, under the burner. connected