SU1427152A2 - Apparatus for cleaning gas effluents - Google Patents

Abstract

The invention relates to devices for the purification of gas emissions and can be used in the oil refining, food and other industries. The purpose of the invention is to reduce energy consumption and increase the degree of neutralization of harmful gases during cleaning of gas emissions. The device consists of a heat-insulated body 1, in which chambers with gas-permeable regenerative inserts are placed. 4. The chambers are separated by a partition 2 and each of them is adjacent to a mixing channel 5, in which a small mount 6 is installed. a movable catalytic element 8 fixed on the axis rotatably 90 °. When gases pass through the device, the first along the gases, the catalytic element 8 rotates into an inactive position and enters the mixing channel, where it is mixed with the combustion products of fuel from the burner 6, and then enters the second catalytic element 8, which is in the working position. Thereafter, the gases enter the second chamber, give off heat to the gas-permeable regenerative packing, and are removed to the atmosphere. 1 3. p. F-ly, 2 ill. $ 3

Description

eleven

A- A

7 E

I j

 I

(-.

 YU

O1 HCHE

GO

////////// / 7 // 7 ///,

FIG. 2

The invention relates to devices for the purification of harmful gaseous emissions and can be used in the chemical, oil refining, food and other sectors of the industry where the purification of exhaust gases is required before they are discharged into the atmosphere.

The purpose of the invention is to reduce energy consumption and increase the degree of neutralization of harmful impurities during the purification of gas bybrokes.

I Fig. 1 shows a device for cleaning gas emissions; in fig. 2 is a section of FIG. one.

; The device for cleaning gas emissions consists of a heat-insulated body 1, divided by partitions 2 into chambers 3, in each of which a gas-permeable regenerative nozzle 4 of refractory material is located. Nozzles 4 are separated from the outer wall of the device by partitions forming the mixing channels: 5, each of which has burners 6 for burning fuel gas. (The mixing channels 5 are interconnected through a window 7 in the partition 2. Between each chamber 3 and the mixing channel 5 adjacent to it is a catalytic element 8, which can rotate on axis 9 90 °, occupying an operating or non-operating position. Catalytic element 8 is a frame assembled from metal corners, covered with filtering metal mesh and filled with a granular catalyst. Gas lines 10 and 11 serve for supplying gas emissions to the device and removing purified gas from it. gas flow is carried out using valves 12. The device operates as follows: Gas emissions to be cleaned are supplied via gas line 10 to one of the chambers 3, where they pass through a preheated regenerative nozzle 4, extract some of its heat, and enter the mixing chamber. a channel 5 in which the fuel gas is displaced with the combustion products, thereby increasing their temperature. At the same time, gas emissions pass from chamber 3 to the mixing channel 5 adjacent to it, mine catalytic element 8, which at this moment overnut around axis 9 by 90 °, ie. e. is in the inoperative position.

Then the gases through the window 7 in the partition 2 enter the other mixing channel 5 of the adjacent chamber 3, where they are again displaced with the combustion gas fuel products and

at the same time, the reaction temperature of the conversion of harmful impurities contained in these gases to carbon dioxide and water is heated. Some of these impurities. Having a low auto-ignition temperature, it burns in this mixing channel,

 the rest are neutralized by the further passage of gases through the catalytic element 8 located between the chamber and the mixing channel. In the adjacent chamber, the purified gases pass through the pe5 generative nozzle 4, heat it, and through the gas line 11 are removed from the device. After the regenerative nozzle 4 in the first chamber 3 is cooled down along the gaseous emissions, the direction of movement of the gases is reversed by

0 switching valves 12. At the same time, the positions of the catalytic elements 8 change.

The proposed device allows for the process of cleaning gas emissions.

5 at lower temperature (400-450 ° C) and, therefore, at a lower flow of fuel gas. Due to the deep oxidation of harmful impurities on the catalyst, the completeness of purification of gas emissions is increased.

0 A device for cleaning gas emissions, together with significantly lower operating costs and the complete neutralization of harmful impurities in gas emissions, ensures the neutralization of impurities formed during the combustion of fuel gas in the burners of the device.

Claims (2)

1. The device for cleaning gas emissions by author. St. No. 885713, characterized in that, in order to reduce energy consumption and increase the degree of neutralization of harmful impurities during purification of gas emissions, it is equipped with movable catalytic elements located between chambers and adjacent mixing channels. 2. A device according to claim 1, characterized in that the catalytic elements are rotatable by 90 °. 12 / J 9 FIG. 7