SU1719783A1 - Method of coal burning in boiler furnace - Google Patents

Abstract

The invention can be used in the technique of burning cement clinker. The purpose of the invention is to expand the functionality by simultaneously generating energy steam and producing a building material. The method of burning coal in the boiler furnace includes feeding into a layer of liquefying air, and into the superfluous space — mixtures of water, cement, coal and air. A mixture of water, fuel and cement raw materials forms a conglomerate of particles. When a fuel part burns out in them, sintering of the ash residue with cement clinker takes place. The finished product is removed from the volume of the furnace and fed to a device for forming cinder blocks. The flue gases, leaving the furnace, wash the pipes of the convective heat exchanger, where they give up their heat to produce water vapor. 2 Il.

Description

The invention relates to the building materials industry and energy facilities and can be used in cement cement clinker engineering in the chemical, metallurgical and other industries with parallel production of thermal energy, building material of a given composition, directly prepared after mixing with water for the manufacture of cinder blocks.

The aim of the invention is to enhance the functionality by simultaneously generating energy vapor and producing building material.

FIG. 1 shows a boiler furnace scheme in which a method of burning coal can be implemented; in fig. 2 - scheme of the furnace with built-in heat exchanger.

The firebox contains gas distribution grid 1, a mixing device 2, a convective heat exchanger 3 and fenders 4.

The method of burning coal in the boiler furnace is implemented as follows.

The initial solid fuel in the form of granules with a size of up to 13 mm is fed to the mixing device 2, where it mixes with the cement clinker by supplying water and air to the mixing device 2.

The mixture of water, fuel and cement clinker forms particles of aggregates, which are fed from the mixing device 2 to the gas distribution grid 1.

The fluidized bed in the furnace is created on the gas distribution grid 1 due to

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liquefying air. In the conglomerates of particles in the fluidized bed, the fuel part burns out, and sintering of the ash residue with cement clinker occurs. Thus, the formation of the finished product occurs, which is easily removed from the volume of the furnace and fed to a device for forming cinder blocks (not shown).

In this case, the burning process is carried out at temperatures below the melting point of the ash.

Exhaust flue gases, leaving the furnace, wash the pipes of the convective heat exchanger 3, where they give up their heat for the production of water vapor.

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After cleaning, the flue gases are emitted into the atmosphere, and the return of the ash of the fuel-cement dust occurs in the furnace.

Fo rmu l and z obre ts A method of burning coal in a boiler furnace by supplying fluidized air to a layer and, in the over-bed space, water with an additive, as well as coal and secondary air, which is different By the fact that, in order to expand the functionality by simultaneously generating energy steam and obtaining building material, cement raw materials are used as an additive.

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Coal baby

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Cement clinker

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cement mortar

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1 & / whether the product figure 2

Claims (1)

5 FORMULA AND PORTRAIT A method of burning coal in the boiler furnace by feeding fluidized air into the bed, and into the superlayer space - water with additives, as well as coal and secondary air, characterized in that, in order to expand functionality by simultaneously generating energy vapor and obtaining building material, cement additives are used as an additive. Coal chips water “cement clinker • PY / ablation return Primary air finished product yield