Process of removing the ash from the gas produced by the combustion of coal
AssigneeMetallgesellschaft Aktiengesellschaft
InventorsEkkehard Weber, Reinhard Schulz
Life of this patent
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Abstract
Described is a process in which the liquid ash is removed from a combustion gas which is produced by a combustion of coal with air under a pressure between 2 to 30 bars, wherein the combustion gas at a temperature between 1200.degree. and 1700.degree. C. is passed through at least one porous gas-permeable filter element which is disposed in the combustion chamber. The combustion is effected with a C:O.sub.2 mole ratio of 1:0.6 to 1:0.99 and the filter element consists of carbon; carbides of boron, silicon, titanium, zirconium or hafnium; nitrides of boron, silicon, titanium, zirconium or hafnium; borides of titanium, zirconium or hafnium; and/or oxides of aluminum, silicon, magnesium or zirconium.
Claims3
A process of removing liquid ash from a combustion gas comprising:
- combusting coal with air under a pressure between 2 to 30 bars, with a C:O.sub.2 mole ratio of 1:0.6 to 1:0.99 to form a combustion gas at a temperature between 1200.degree. and 1700.degree. C.;
- and
- passing the combustion gas through at least one porous gas-permeable filter element which is disposed in the combustion chamber, the filter element consisting of carbon, carbides of boron, silicon, titanium, zirconium or hafnium, nitrides of boron, silicon, titanium, zirconium or hafnium, borides of titanium, zirconium or hafnium and/or oxides of aluminum, silicon, magnesium or zirconium.
Dependencies are inferred from the claim text.