| 摘要 |
PCT No. PCT/EP85/00722 Sec. 371 Date Apr. 14, 1986 Sec. 102(e) Date Apr. 14, 1986 PCT Filed Dec. 19, 1985 PCT Pub. No. WO86/03821 PCT Pub. Date Jul. 3, 1986.The generation of heat from the fossil fuels coal, oil and gas is possible nearly free from nitric oxide if the materials are burned in a multi-stage combustion process. The fuel, which, in some cases, contains ash, is admixed with highly heated air and steam and reacted to fuel gas in a ceramically fully lined melting chamber. The resulting fuel gas is cooled for the preheating of the air and steam generation, purified from solids and hydrogen sulfide, and fed into a flameless catalytic or noncatalytic combustion stage. In the combustion stage, because of the low caloric value of the admitted gas, only a temperature clearly below 1300 DEG C. is reached in the ceramic combustion unit, so that the combustion takes place nearly free from nitric oxide. |
