Gas treatment reactor

 

(57) Abstract:

The invention is intended to clean emissions containing harmful substances. Gas treatment reactor to clean emissions containing harmful substances, includes a thermally insulated housing with cameras contaminated and purified gas, which is placed between the cassette input and output cavities, alternating the height of the cassette. Tapes made in the form of a series of perforated shelves with placed on them by the catalyst and/or an active filler, and additionally has a second row of shelves, crossing the first acute angle and forming due to this closed volumes. Shelves in each row are installed in parallel. After crossing the shelves in the direction of gas determine and establish the thickness of the catalyst layer and/or active filler according to the formula

INi=i-I(I+P),

wherei- defined layer thickness, mm;i-Ithe thickness of the previous layer, mm; P = (Ci-Ci-I)/Sithe degree of purification of gas with a layer of a defined thickness; Ciand Ci-Ithe concentration of harmful substances in the gas before and after the designated layer, mg/m3. The proposed gas treatment reactor ru is but the device operates reliably during the whole service life. 2 C.p. f-crystals, 2 Il.

The invention relates to a device for treatment of emissions, which contain harmful substances, such as resinous substances, polycyclic aromatic hydrocarbons, benzopyrenes, phenols, etc., in particular to gas cleaning reactors and can be used in various industries associated with the need for abatement of emissions, incorporating harmful substances.

Known fibrous filter in the form of shelves with a fibrous material, interconnected zigzag (C. B. stark dust collecting and cleaning gases in metallurgy. M.: metallurgy, 1977, S. 49).

The disadvantage of this filter is its low efficiency due to the fact that the gases disposable pass through the filter layer with a low specific surface area.

It is also known a device selected as a prototype, in the form of reactor for neutralization of gases - catalytic thermal reactor containing a thermally insulated housing with cameras contaminated and purified gases, between which is placed the cassette input and output cavities, alternating the height of the cassette, each arouse layer of refractory fibrous material (W. Non-ferrous metallurgy, No. 9, 1990, S. 29-30).

The disadvantage of the prototype is the low utilization of the useful volume of the reactor, which leads to incomplete cleaning of gases, or to the necessity of increasing the overall dimensions of the reactor to increase surface contact.

Adaca facing invention is to increase the degree of purification of gases by increasing the area of contact of the gases with the catalyst and/or an active filler and as a consequence, the performance of the reactor during its previous dimensions.

Proposed gas treatment reactor to clean emissions containing harmful substances, comprising a thermally insulated housing with cameras contaminated and purified gas, which is placed between the cassette input and output cavities, alternating the height of the cassette, in which new is that tapes made in the form of a series of perforated shelves with placed on them by the catalyst and/or an active filler, and additionally has a second row of shelves, crossing the first acute angle and forming due to this closed volumes.

New is also that the shelves in each row ustanovlenija define and establish the thickness of the catalyst layer and/or filler (active) according to the formula:

Bi= Bi-1(1+P)

where Bi- defined layer thickness, mm;

Bi-1the thickness of the previous layer, mm;

P = (Ci- Ci+1)/Cithe degree of purification of gas with a layer of a defined thickness;

Ciand Ci+1the concentration of harmful substances in the gas before and after the designated layer, mg/m3.

Tests of the device have shown that the degree of purification of gases that have passed through it sharply increases at the same as in the prototype, the size of the device, which is explained by the increase of the effective area of contact due to the installation of additional one or more parallel rows of perforated shelves with catalyst and/or an active filler. When crossing at an angle of 30othe area of contact increases 2.1 times even with one additional adjacent shelves and angled at 60oit increases 2.3 times. Neutralization of gases occurs in 2 or more stages when injected gases in closed volumes, made of perforated shelves. Gases passing through the first catalyst bed and/or filler, partially purified, and then forced to re-pass through the catalyst bed, but the greater thickness and so on, until in the th information was found solutions, contains a set of proposed features that allows us to conclude that the criteria of "novelty" and "significant differences".

In Fig. 1 shows a diagram of the gas treatment reactor to clean emissions containing harmful substances.

In Fig. 2 is a diagram of one embodiment of the arrangement of the shelves in magazines.

Is proposed according to the invention, the gas purifying reactor to clean emissions containing harmful substances, including the heat-insulated housing 1 with cameras 2 contaminated and clean gas 3, between which is placed the cassette with 4 input 5 and output 6 cavities, alternating the height of the cassette 4. Cassette 4 is made in the form of a series of perforated shelves 7 placed on them by the catalyst 8 and/or active filler 8 in the form of shaped particles, coarse or fibrous material. In addition to the shelves 7 has a second row of shelves 9, crossing the line crossing 10 at an acute angle and forming due to this closed volume 11. Shelves 7 shelves and 9 are located in the respective rows parallel to themselves. The thickness of the catalyst layer 8 and/or active filler 8 after crossing 10 define and set according to the installed toplivnikami device 12 or the heaters 12 for combustion of impurities and create a temperature required to burn through the catalyst 8 and/or active filler 8. The input 13 and the output 14 of the nozzle is placed in a vertical or horizontal walls of the housing 1.

The device operates as follows.

Heating of the reactor and catalyst 8 and/or active filler 8 is due to the heat cleared emissions. If this heat is not sufficient, as an additional source may be burning fuel in the fuel combustion device 12 or heated by electric heaters 12 to the temperature of the beginning of the reaction between the catalyst 8 and the cleaned gas. Contaminated gases through pipe 13 is fed into the chamber 2 of the contaminated gas, where there is a partial combustion of harmful substances with the help of the device 12, after which the gas enters at the input 5 of the cavity of the cassette 4, comes to the point of intersection 10 with the second-row of shelves 9 is held in closed volumes 11, seeps through the shelves 7 and 9 placed on them by the catalyst 8 and through the output cavity 6 are purged into the chamber 3 clean gas. Passing from the camera dirty 2 to the camera cleaned 3 gas complex trajectory formed by the intersection of the shelves 7 and 9 with catalyst 8 gas, purged out in point is that of dimensions. Its manufacture is easy, technologically, the device operates reliably during the whole service life.

1. Gas treatment reactor to clean emissions containing harmful substances, comprising a thermally insulated housing with cameras contaminated and purified gas, which is placed between the cassette input and output cavities, alternating the height of the cassette, wherein the cassette is made in the form of a series of perforated shelves with placed on them by the catalyst and/or an active filler, and additionally has a second row of shelves, crossing the first acute angle and forming due to this closed volumes.

2. Gas treatment reactor under item 1, characterized in that the shelves in each row are installed in parallel.

3. Gas treatment reactor under item 1, characterized in that after crossing the shelves along the gas determine and establish the thickness of the catalyst layer and/or active filler according to the formula

Bi= Bi-1(1 + P)

where Bi- defined layer thickness, mm;

Bi-1the thickness of the previous layer, mm;

P = (Ci- Ci+1)/Cithe degree of purification of gas through the layer donkey-defined layer, mg/m3.

 

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2 dwg

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