DE481736C - Manufacture of carbon - Google Patents

Description

Production of carbon It is known that carbon oxide is produced by contact substances, like finely divided iron, cobalt or nickel and the like, at higher temperatures in Carbon and carbonic acid is decomposed. Technical processes are also known after which the pretreated contacts and the reaction gas in the decomposition vessels are performed, from which the deposited metal-containing carbon is then discharged will.

It has now been found that the decomposition of carbon oxide or carbon dioxide-containing gases to carbon and carbonic acid continuously in simple Way can perform if you give the reaction gas about o, i to o, 2 percent by volume Adds iron carbonyl vapor. The gas-carbonyl mixture is advantageously under pressure from above into the higher temperature; z. B. qoo °, heated reaction vessel introduced.

The flow rate can be chosen so that the resulting Carbon without settling in the reaction vessel into a directly below the Reaction vessel attached collecting vessel is transferred, from which it is by suitable Devices can be discharged.

The exhaust gas, which still contains considerable amounts of carbon oxide, is after Removal of the carbonic acid and admixture of the required amount of iron carbonyl fed back into the furnace again in the circuit or in a second apparatus of the Subject to the treatment described.

The process can also be carried out in such a way that the carbonyl is in liquid state continuously or at certain time intervals in the appropriate Injected amount into the reaction vessel. Instead of iron carbonyl can be also other carbonyls or organic compounds of metals that cause decay catalytically influencing carbon monoxide, use. Example carbon dioxide with one Iron carbonyl content of 0.2 percent by volume is below 100 atmospheres at 40o °. Pressure through passed a high pressure furnace. In the process, 47 percent of the amount of gas breaks down into carbon and carbonic acid. The exhaust gas is carbonated by washing it with water under pressure freed and after the addition of o, 2 percent by volume iron carbonyl in a second oven introduced. The resulting carbon contains about 2.0 percent iron.

Claims (2)

PATENT CLAIMS: i. Process for the production of carbon from carbon oxides or gases containing carbon oxides, - characterized in that the gas is heated under pressure in the presence of about o, t to o, 2 percent by volume of carbonyls or organic compounds of metals which decompose carbon oxides, expediently iron carbonyl vapor, at a higher temperature. 2. Embodiment of the method according to claim x, characterized in that iron carbonyl or other carbonyls or organic Compounds of metals that decompose carbon monoxide in suitable quantities in liquid form Injected mold into the reaction vessel.