SU1249266A1 - Installation for thermal detoxication of waste gases - Google Patents

Description

The invention relates to devices for the fire disposal of toxic waste gases and can be used in the food, engineering, chemical and other industries.

The purpose of the invention is to increase the compactness of the installation and the neutralization of toxic waste gases with a temperature of more than 250 ° C or containing resinous and sticking organic dust.

Fig. 1 shows an installation for thermally deactivating waste gases; Fig. 2 shows a section A-A in FIG.

The installation consists of a heat insulating body 1, divided by a partition 2 into two chambers 3. A gas-permeable refractory material nozzle 4 is installed in each chamber. The housing 1 is provided with a pipe 5 for introducing the waste gas and a pipe 6 for outputting the purified gas. The gas flow is reversed by the valve 7. A disposal chamber 8 is located above the nozzle 4, which communicates with the prechamber 9 of the throttling grid 10 of refractory material. The fuel gas is supplied through the burner 11. The vacuum in the prechamber 9 is controlled by the damper valve 12 of atmospheric air. Heat recovery equipment is provided for heat recovery. For installation of suction of purified gases, the installation is equipped with a diesel engine 14.

The installation of the disposal of waste gases works as follows.

The waste gas to be cleaned is fed into one of chambers 3, passes through a gas-permeable nozzle 4, is heated and enters the decontamination chamber 8, where it is mixed with combustion products of fuel gas coming from the prechamber 9 through the throttling grid 10, the mixture is heated to the self-ignition temperature of harmful substances, which are completely burned, turning into harmless Hj O and CO.

The temperature in the neutralization chamber 8 is regulated by the supply of fuels.

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gas through the burner 11. The thin regulation of the vacuum in the prechamber 9, which is necessary for the characteristics of the burner, is made by the damper 12 of atmospheric air suction. In order to evenly distribute the jets of combustion gas fuel entering the decontamination chamber B and to create the resistance necessary to maintain a certain vacuum in the decontamination chamber 8, the rear wall of the pre-chamber 9 is made in the form of a grid with holes of certain sizes, the grid resistance is equivalent to the resistance of one regenerative nozzles Then, the neutralized waste gas passes through the second chamber along the gas path with the gas-permeable nozzle 4, heats it and is discharged through the heat-recovery unit 13 with the exhaust fan 14 to the atmosphere. In the heat utilizing apparatus 13, the heat of the waste neutralized waste gases is used to heat water or air for the technological needs of the enterprise.

After the gas-permeable nozzle 4 in the first chamber cools, the direction of the gases by switching valve 7 is reversed.

Pre-chambers ensure the stable operation of the burners during the operation of only the traction machine and the even distribution of the hot jets of the combustion products of the fuel in the puri- fying flow of waste gases heated in the regenerative nozzle. The thin regulation of the vacuum in the prechamber is provided by an air suction flap. I

The proposed design is designed in such a way that it does not require the creation of optimal conditions for the operation of the burner in the furnace itself and, therefore, will allow for the operation of the regenerator furnace with one traction machine installed at the outlet of the purified and cooled waste gases from the heat recovery unit.

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Editor A. Sabo

Compiled by T. Lepakhina

Tehred E. Chizhmar Proofreader M. Samborska

Order 4217/37 Circulation: 514 Subscription

VNIIPI USSR State Committee. for inventions and discoveries 113035, Moscow, Zh-35 ,. Raushsk nab. 4/5

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production and printing company, Uzhgorod, st. Project, 4

FIG. 2

Claims (2)

1. INSTALLATION FOR THERMAL DISCONTINUATION OF EXHAUST GASES, comprising a housing with a separation wall, a neutralization chamber, chambers with gas-permeable nozzles, nozzles for gas inlet and outlet and a burner device, characterized in that, in order to increase the compactness of the installation and neutralize toxic waste gases with temperature more than 250 ° C or having resinous and sticking organic dusts in its composition, _{t the} unit is equipped with a pre-chamber for burning fuel connected by a ceramic throttling brushes with a disposal chamber located above the gas-permeable nozzle. 2. The apparatus according to claim 1, wherein the resistance <g of the throttling grating is equivalent to the resistance of one nozzle. SU ... 1249266