SU986482A1 - Catalyst for cleaning gases from carbon oxide - Google Patents

Description

(54) CATALYST FOR CLEANING GAS FROM CARBON OXIDE

one

The invention relates to catalysts for the purification of gas mixtures from toxic impurities, in particular carbon monoxide, and can be used to remove it from gas process emissions and exhaust gases.

A known catalyst for the purification of gases from carbon monoxide, including palladium and ruthenium p. .

The disadvantage of such a catalyst is the .io its view cost.

Also known is a catalyst for CLEANING of gases from carbon monoxide, including copper and manganese oxides, but 5 times 5 of active alumina at a molar ratio of margawd dioxide and copper oxide of 1: 2.

The known catalyst provides 0 | 5-.1OO% degree of purification from carbon monoxide at a temperature of 350 ° C and a gas flow velocity of 23 ° C OCH.

Such a catalyst is not sufficiently active.

The aim of the invention is to increase the activity of the catalyst.

This goal is achieved by the fact that the catalyst contains oxides of copper and manganese on a carrier of active alkyd oxide in the following ratio, May. %:

Copper oxide19.6-22.0

Manganese Dioxide7.1-10.2

Alumina Rest

The difference between the proposed catalyst and the known one is in the aforementioned comparison of the kc components. At the same time, the almost complete oxidation of carbon monoxide is achieved at a temperature of 16 ° -200 ° C, the flow rate of the gas-air flow is 2.7-23 thousand, the initial concentration of carbon monoxide is 0.5-1.5 vol. %

The catalyst is obtained by adding A-1 grade active aluminum oxide to the vibro-powdered powder of copper nitrate, a small amount of water to make the mass of plasticity forming in auger-granulator with a die diameter 2, O-2, f mm; heat treatment of the obtained granules at 280-ZOOc for 3-4 hours, followed by impregnation with a solution of manganese nitrate and again by heat treatment. Example. A molded manganese oxide-containing catalyst containing copper oxide 19, emanas manganese dioxide 10.2 wt.%, Alumina 7O, 2 wt.%, Was used. A wet air-air mixture containing 0.5% by volume of carbon monoxide was passed through a 5 cm high Catalyst with a flow rate of 270 O h at 100–200 ° C. The catalyst activity in the oxidation of carbon monoxide; at 100; 130; 15O and 200 ° C; oxidation degree; carbon monoxide is 43} 59; 81% and 1% respectively. PRI mme R 2. Used the mash containing copper oxide of 20.2% manganese dioxide 8, wt.% And alumina 71.0 wt.%. A wet gas – air mixture containing 0.5% by volume of carbon monoxide was passed through a catalyst bed 5 cm high with a bulk velocity of 2,700,100-2OO ° C. Activity of a molded copper-manganium catalyst in the oxidation of carbon monoxide: at 10.0; 13O; 150 and 2OO C, the degree of oxidation of carbon monoxide is 40; 62; 84 and 100. PRI me R 3, Used a catalyst masking copper oxide 22.0 wt. Manganese dioxide 7.1 wt.%, Alumina 70.9 wt.%. Catalytical experiments were carried out under the following conditions: temperature 100200 0, flow rate 27OO h, and the proposed

2.7 thousand

0.5 06

40-43

110

50-51

110

59-62 8О-84 90-91 24 carbon monoxide concentration of 0.5 vol.%, High carbon catalyst catalyst 5.cm. AKTUBMOCTI catalyst in the oxidation of carbon monoxide: at 100; 13O; 15O to the degree of oxidation of carbon monoxide is 41; 61; 80 to 100% respectively. EXAMPLE 4 A catalyst containing copper oxides was used, 20.2% by weight. manganese shuoxide, 8.8 wt.%, alumina 71, O wt.%. The catalytic experiments were carried out at a temperature of 10 ° -200 ° C, a flow rate of 23 thousand. The initial concentration of carbon monoxide was 1.5%, and the catalyst bed was 5 cm. The activity of the catalyst in the oxidation of carbon monoxide: at 100; llOj 130; 150; 160; 17O; 180 and the degree of carbon monoxide is 26; thirty; 32; 55; 68; 9O; 10O and 100%. With a higher twist than in examples 1-3, the value of the initial concentration of carbon monoxide in the stream and a much higher volumetric flow rate, the carbon monoxide is oxidized at 13 ° C by 30%, at 150 ° C by 55%, at 170s by 9O%, at 18О-20О ° С at 1OO%. PRI me R 5. Determine the comparative efficiency in the process of purifying gas-air mixtures from carbon monoxide of the proposed catalyst and the known one. As can be seen in the tgablitz, the activity of the proposed catalyst is much higher (at 10 times) .100%. The oxidation degree of carbon monoxide is reached on such a catalyst already at L.80 ° C, and on the known catalyst shsh at 35 ° C.

1.5

Known | 23 - MhO2 .. (0.52, 0) CuO (in the carrier lilH-2)

Frmmalaizobre n and

Catalyst for carbon monoxide, including oxides of Mejti and manganese on a carrier, which is characterized by the fact that, for the purpose of improvement, it contains vumuls veto {. 6-22,0

Manganese dioxide7.1-1О, 2

Oxide alc shny Else

Table storage

2OO

100

100 26 DA 32 55 68 9О

BUT

130

3 thousand

150

16O

170

18O 100

2OO 1OO 10 40 9О 95-1ОО

20r

250

3 thousand

ZOO

35О

East

information, prvn pyu in evomaniya during examination

1. Author's certificate of the USSR J 217389, cl. C 1O K 3/04; 1967.

2. Refined manganese noiriie metal ores of Georgia. Sat articles. Tbilisi, Meshshereba ,. 1964, no. 2, s. 1O1.

Claims (2)

Catalyst for the purification of gases from carbon monoxide, including copper and manganese oxides on a carrier made of active oxides of aluminum, characterized in that in order to increase activity, it contains components in the following 19.6-22.0 7.1-10.2 The rest of the ratio, wt.%, Copper oxide Manganese dioxide Aluminum oxide Sources of information taken into account during the examination 1. USSR Copyright Certificate No. 217389, cl. C 10K 3 / 0¾ 1967. 2. Processing of manganese and norfft—, metal ores of Georgia. Sat articles.