Coal powder burning organic heat carrier boiler

Abstract

The invention provides a coal powder burning organic heat carrier boiler which comprises a lower hearth, an upper hearth, a convection region and a waste heat boiler. The coal powder burning organic heat carrier boiler is characterized in that the length of the lower hearth is smaller than the length of flame of a burning region, one side of the lower hearth is provided with an air feeding device, the flame of the burning region is bent to be in an L shape, the cross section of a heat exchange region of the lower hearth is in a U shape, a double-rectangular-coil structure is adopted for the upper hearth, the upper hearth is provided with two rectangular coil assemblies of the same shape and size, the convection region is formed by connecting three sets of coils in parallel, the upper portion of the waste heat boiler is provided with a flue gas collection region, and the cross section of the flue gas collection region is circular and gradually increased from top to bottom.

Description

technical field [0001] The invention belongs to the field of boilers, in particular to a pulverized coal-fired organic heat carrier boiler. Background technique [0002] The boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electric energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The original meaning of the pot refers to the water container heated on the fire, and the furnace refers to the place where fuel is burned. The boiler includes two parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, which are mainly used in daily...

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Problems solved by technology

[0005] Ordinary boilers have the following disadvantages: the furnace flame is linear, the furnace length is long, the floor area is large, the furnace volume is small, the flame combustion is not sufficient; the space is not fully utilized, the radiation heat transfer is not enough, the furnace outlet temperature is too high; The area is not large enough, the shape is large, and the body frame is not stable enough; the convection area adopts a series structure, the medium flow is not uniform enough, and the layout is not compact enough; the flue gas flow of the waste heat boiler is uneven, the resistance is large, and the heat exchange is not sufficient

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