DE443445C - Process for producing water gas and other flammable gases - Google Patents

Description

Process for producing water gas and other combustible gases. In the patent 437970 a method for the production of water gas from fine-grained fuel is protected, in which this is kept in an up and down swirling motion by means of the gasification means.

In this process, if you are hot blown with very high Wind speed works, not only ashes but also fine-grain fuel is carried along. While you separate the fine-grained particles in Abstreifkamm-ern and the generator can supply again, the fuel dust is carried along with the gas and must with washers or by electrical means from which gases can be removed is therefore possible lost for the gasification process.

It has now been found that this could be ill in the following way can help. Air, appropriately heated to a high temperature, is passed into the hot blown gas one, either in the upper part of the generator, i.e. above the one in motion located carbon filling, or you then give the air to the warm blow gas, if this has passed through the scraper for the fine-grained parts. Surprisingly takes place here if the amount of air is such that the gasification of the entrained Fuel particle is incomplete, d. H. that there are still small amounts of coal dust in the end gas are contained, no increase in the carbonic acid content of the gas takes place. The coal dust is gasified with the formation of carbon monoxide. The air introduced can be very heated which is not the case with the air introduced into the generator at the bottom because of the rust can happen. Instead of air, oxygen, Lindeluft and the like can also be used.

The execution of the method is explained using the following example: In a generator with a grate surface of 4 square meters and a charcoal filling around i 2o cm high Every hour around 45oo cbm of air is introduced under the grate. Lignite with around 10 percent The water content is screwed in at the bottom of the grate with a screw. At one temperature from around goo ° C are added to the scraper for the granular coal, still 6od cbm Air of around goo ° C is blown into the hot air blower every hour. The received As tests have shown, gas has the following composition: 58.6 percent N., 26.0 percent CO, io, 2 percent H, 4.4 percent CO., 0.8 percent CH, and still contains around iog coal dust in i cbm. The air intake in the upper part of the generator also has the advantage that the carbon filling rises very quickly high temperatures can be brought, which is very important for the production of water gas is advantageous.

Claims (1)

PATENT CLAIM: Process for producing water gas and others flammable gases in a layer of fine-grained fuel with being fluidized of the gasification material according to Paten 437-97o characterized in that the fuel dust-containing hot waran blowing gas after leaving the fuel layer in air, expediently in highly etched Condition is blown in in such an amount that the iun heat-blowing gas is carried along solid fuel is gasified except for a small residue.