Process and a means for burning solid fuels, preferably coal, tu

Details Process and a means for burning solid fuels, preferably coal, tu Process and a means for burning solid fuels, preferably coal, tu

1984-01-11

1986-02-11

Makay, Albert J.

Furnaces

Process

Burning pulverized fuel

110204, 110261, 110264, 110265, F23D 100

Patent

active

045692955

ABSTRACT:
A process and a means is described for burning solid fuels, preferably coal, in pulverized form, which are mixed with a carrier liquid, such as water and/or oil or the like, to thereby form an emulsion, and for this purpose the fuel emulsion is injected through a substantially annular entrance port into a combustion chamber so that an approximately hollow cone-shaped flow configuration is produced. Within this flow configuration, a low pressure is built up immediately behind the entrance port for the fuel emulsion opening into the combustion chamber, so that a portion of hot combustion gases and a remainder of unburnt fuel particles are recirculated to the entrance port. Furthermore, gas entrance ports are provided in the end wall of the combustion chamber, through which the gas or air flows the path of flow of which extends concentrically and spirally towards the axis of the entrance port for the fuel emulsion opening into the combustion chamber. In this way, the fuel emulsion injected into the combustion chamber is set in rotation, whereby the hollow cone-shaped flow configuration is fanned out or expanded to a bell-shaped or apple-shaped configuration. This feature provides for an extremely long particle path in the shortest possible distance along the middle axis of the combustion chamber. Practically complete combustion is ensured within an extremely short combustion chamber.

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Technical Proceedings Report, 1967, p. 648 (German).

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