SU1090965A1 - Method of operating furnace device - Google Patents

Abstract

1. METHOD OF WORK OF THE FLUID DEVICE with inertial arranged combustion chambers by supplying solid fuel and oxidizer to each of them, and in one of the chambers the fuel is burned in the mode of solid slag removal, and in the other in the mode of liquid slag removal, which is in order to increase efficiency by reducing the erosion of heating surfaces and ash, in the mode of solid slag removal, fuel is burned in the lower chamber, and in the mode of liquid slag removal - in the upper chamber, and to carry out the combustion process dkim slag removal in the upper chamber is fed with fuel fusible mineral part.

Description

2. The method according to claim 1, wherein the fuel and oxidant are tangentially and additionally radically added to it in the upper chamber, which softens the temperature of the mineral part of the fuel.

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The invention relates to the combustion of fuel and the moket to be used in thermal power plants,

Lime methods of operation of the device by supplying solid fuel and oxidizer to the chambers, and burning is carried out in the mode of solid slag removal or in the mode of liquid slag removal 1 J

The disadvantage of the methods is low efficiency due to the erosion of the heating surfaces during combustion in the solid slag removal mode and due to heat loss from the slag.

There is also a known method of operation of a topgoob device with widely located combustion chambers by supplying solid fuel and oxidizer J to each of them, with fuel burning in the top chamber in solid slag removal mode, and in the lower mode, liquid slag removal mode 12}.

The disadvantage of this method is its cost effectiveness due to the fact that there is no increased erosion of the heating surfaces and ash ash.

The purpose of the invention is the leadership

economy.

This goal is achieved by the fact that, according to the method of operation of the combustion device with continuous PC1 positioned by the combustion chambers, each of them receives solid fuel and an oxidizer, and in one of the chambers the fuel is burned in the solid-slag mode and in the other in the liquid mode. In the mode of solid removal of fuel, the fuel is burned in the back chamber, and in the liquid slag removal mode - in the upper chamber, and to carry out the combustion process with liquid psg removal in the upper chamber,

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fuel with a low-melting mineral part.

In addition, fuel and oxidant are fed into the upper chamber, tangentially, additionally and additionally radially. An additive that lowers the temperature of the mineralization of the mineral part of the toxis.

FIG. 1 shows the combustion device, a longitudinal section; in fig. 2 - section aa in fig, t,

The furnace device contains an upper chamber 1 with burners 2, nozzles 3 of the additive inlet and nozzles 4 for introducing recirculation gases lined with 5 on the screens and marks 6 for liquid slag removal, a lower chamber 7 with burners 8 and a window 9 for dry slag removal. The axes of the burners 2 and nozzles 4 lie in the planes normal to the axis of the furnace, and are set tangentially to the conditional circles inscribed in the upper chamber 1.

The method of operation of the combustion device with locally arranged 1- And the combustion chambers is carried out as follows.

Tonjn-iBo and the oxidizer are fed through the burner 2 k 8 respectively to the upper 1 and lower 7 combustion chambers. In the lower chamber 7, the fuel is burned in the mode of solid slag removal, and in the upper chamber 1 - in the mode of liquid slag, fine. In order to carry out the process of burning: and with liquid dedusting to the top of chamber 1

serves fuel with a low-melting mineral part. Part of the ash formed during fuel combustion in the lower chamber 7 is discharged through the window 9f 3. The remaining quantity, together with the flue gases, enters the upper chamber 7, where it encounters slag particles. In this case, part of the liquid slag, together with the ashes, is separated into the lower part of chamber 1 and passed through marks 6, while the other part is transported by gases to the upper part of chamber 1, where solidification of the liquid slag occurs. Hardened particles, being a mixture of slag and ash, due to the wetting of the surface of the ash particles with liquid slag do not have sharp cutting edges inherent in the ash particles when burning fuel in the mode of solid slag removal. Thus, the proposed method reduces the removal of ash into the gas path of the boiler and reduces the erosion of heating surfaces, which contributes to increased efficiency.

The process of melting the mineral part of the fuel in the upper chamber 1 is intensified by the addition of additives through the nozzles 3, such as salt.

ammonium, Korye addition, helps to capture dust in electrostatic precipitators.

In order to intensify the process of trapping slag and ash, burner 2 is set tangentially. This creates a vortex motion of the gas and improves the separation of slag and ash onto the walls of the upper chamber 1, from where they come into view, and the films flow down the chamber 1, which also contributes to cost effectiveness.

In order to reduce the influence of the flue gas twist as it moves through the heating surfaces, tangentially to the conventional circle and in the opposite direction, with respect to the fuel and oxidant input, reg.P1 {Glucose,

Claims (2)

1. METHOD OF OPERATION OF A FURNACE DEVICE with belt-mounted combustion chambers by supplying solid fuel and an oxidizer to each of them, moreover, in one of the chambers the fuel is burned in the solid slag removal mode, and in the other in the liquid slag removal mode, characterized in that , in order to increase efficiency by reducing erosion of the heating surfaces and ash entrainment, in the solid slag removal mode, the fuel is burned in the lower chamber, and in the liquid slag removal mode, in the upper chamber, and for the implementation of the combustion process with liquid lacquering in the upper chamber serves fuel with fusible mineral part. (L cz О ζφ о с © Si> 2. The method according to π. 1, with the fact that fuel and an oxidizing agent are fed into the upper chamber tangentially and, in addition, an additive is added radially into it to lower the melting point of the mineral part of the fuel. ί