CN2328887Y

CN2328887Y - Side air thick coal layer smokeless combustion equipment

Info

Publication number: CN2328887Y
Application number: CN 98237076
Authority: CN
Inventors: 李�杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-24
Filing date: 1998-03-24
Publication date: 1999-07-14
Anticipated expiration: 2008-03-24

Abstract

The utility model relates to side air thick coal layer smokeless combustion equipment, which is an improvement for the existing coal combustion equipment. The utility model has the structure and the working principle that the coal moves down in a channel surrounded by a casing, a porous wall and a grid by the self weight, and the air (the steam or the water fog is mixed sometimes) is blown to a coal layer from the side surface through the grid to support the combustion. When the coal moves down, the combustion process and the gasifying process are simultaneously carried out. The generated high-temperature flue gas and gas enter a burning-out chamber through the porous wall to be mixed with the secondary air to be burnt again until burnt out. The coal slag is discharged by a stove from the lower end of the coal layer. The utility model has the advantages of high combustion efficiency, coal saving, favorable smoke and dust removing effect, simple structure, small size, steel saving, easy operation, cleanness and labor saving.

Description

Crosswind high seam smokeless combustion equipment

The utility model belongs to the coal combustion technology field, relates to the improvement of existing coal combustion equipment.

Existing coal combustion equipment, particularly small-sized coal combustion equipment (as evaporation capacity less than 0.5 ton/time boiler), be that hand burns the grate firing pattern mostly.Its advantage is: coal is easy to catch fire in stove.Be fit to burn any coal, comprise smut.Its shortcoming is: combustion efficiency is low.Combustible loss do not finished by solid and flue gas loss is all very big, has wasted a large amount of coals.Owing to be the manual coal supply that is interrupted, cause combustion period, the chimney over-emitting black exhaust contains a large amount of combustibles, flue dust and other harmful substances, serious environment pollution in the cigarette.Fireman's amount of labour is big, and condition of work is abominable.

The purpose of this utility model provides a kind of energy savings, smoke medicining dust-removing effect good, the efficiency of combustion height, improve furnaceman condition of work, simple in structure, volume is little, save the crosswind high seam smokeless combustion equipment of steel.

The technical solution of the utility model is that coal is at shell, move down by deadweight in the passage that pigeon-holed wall and grid surround, it is combustion-supporting that the side of air by grid is blown into the coal seam, coal is when moving down, burn simultaneously and gasification, the high-temperature flue gas of generation and coal gas enter burning chamber by pigeon-holed wall and mix burning again with secondary wind.Until burning, cinder is discharged with fire grate from the lower end, coal seam.

Characteristics of the present utility model are: crosswind high seam smokeless combustion equipment is to be made of coal bunker 1, grid 2, fire door 3, fire grate 4, ash door 5, upper header 6, shell 7, arch tube 8, fin 9, comb 10, lower collecting box 11, secondary air box 12.Wherein upper header 6, lower collecting box 11, fin 9 and comb 10 constitute pigeon-holed walls jointly.Coal in the coal bunker moves down by deadweight in the passage that shell 7, grid 2 and pigeon-holed wall surround, and mixes with the air that enters by grid 2 in moving and burns and gasification.The passage that is surrounded by shell 7, grid 2 and pigeon-holed wall can be: vertical, tilting or band bending section.The structure of grid 2 can be welded into or be formed or cast whole or the water-cooled hollow type or refractory material is built by laying bricks or stones by single cast iron bar by steel plate.Pigeon-holed wall structure can by upper header 6, lower collecting box 11, comb 10 and fin 9 be welded into or or forms or at comb 10 centre filling fire resisting materials 14 by upper header 6, lower collecting box 11, comb 10 and special shaped brick 13; Or be built into or constitute by refractory material by special shaped brick.Upper header 6, lower collecting box 11, comb 10 and arch tube 8 profiles can be garden shape, square or polygonal.The structure of shell 7 can be a double-layer plate weldering system, leakes water and build refractory material 14 and insulation materials in a water-cooled shell type or the individual layer steel plate 5 or built by laying bricks or stones by refractory material and insulation material entirely in the centre, also can two kinds share.

Operation principle of the present utility model is such: fill coal in coal bunker, coal moves down by deadweight along the passage that shell 7, grid 2 and pigeon-holed wall surround.The required air that burns enters coal-fired layer by fire door 3 and grid 2 from the side.When coal moves down in passage, burn simultaneously and gasification, so just finished coal drying, destructive distillation, oxidation, reduce, burn the several stages of slagging.

High-temperature flue gas and part coal gas that coal produces in burning and gasification enter burning chamber by pigeon-holed wall, mix with the secondary wind of sending in the secondary air box 12, carry out burning again, finally become the high-temperature flue gas that burns fully.At this moment can deliver to the place that needs it to high-temperature flue gas.The bottom of coal in passage burns and becomes cinder, enters ash dropping hopper by manual fire grate or stoker fired grate 4, takes out from ash door 5 at last and transports.

For the smoke medicining dust-removing effect that makes burning reaches splendid condition, can in sending into combustion-supporting air, be mixed with gasifying agent one steam or water smoke, to realize full coal gasification combustion.Required gasifying agent is by the supply of steaming of the utility model autonomous device.This system is made up of upper header 6, lower collecting box 11, comb 10, arch tube 8.Can be that heating surface constitutes also by the part water collar.

The utility model is except that These characteristics, and also have following multiple advantage: one, smoke medicining dust-removing effect is good: because be semi-coal gasization or full coal gasification combustion, realized the requirement of smokeless combustion, deduster need not be installed just can reach environmental requirement.

Two, burn, the efficiency of combustion height: 1 adopts the high seam burning, and the time that coal stops in burning gallery is long, generally more than two hours, coal can be grilled thoroughly fully; 2 coals are when moving down, and owing to stirring of fire grate, coal facies have collision friction between answering, and have played the break effect; 3 high temperature section at coal combustion are blown into the air that has steam, have reduced the temperature of coal-fired layer, have avoided the possibility of slagging scorification in the coal seam.The heat loss due to unburned carbon of coal is reduced greatly, and comparable existing coal combustion equipment reduces 5-10%, in addition, owing to need not be interrupted toward interior coal of stove and prepurging, has realized continuous burning, and this makes flue gas loss reduce 2-4% again.

Three, improved fireman's condition of work: 1 once goes up completely, and coal bunker can continue burning about three hours; 2 prepurgings slagging-off is without blowing out, is easy to slag removed with fire grate and arrives, and so just alleviated fireman's amount of labour; 3 can be without blower fan or only just can finish combustion process with air-introduced machine, and burning is in negative pressure state like this, guarantees not smolder outside stove, makes surrounding environment clean.

The utlity model has simple in structure, volume is little, save great deal of steel.

Accompanying drawing 1 is a structure chart of the present utility model.

A side of expression coal bunker 1 is equipped with fire door 3 and ash door 5 in Fig. 1, and grid 3 and fire grate 4 are installed below coal bunker 1, and the pigeon-holed wall that comb 10 and fin 9 are welded into is housed in shell 7 by upper header 6, lower collecting box 11.

Fig. 2 is the structure chart of the utility model pigeon-holed wall.

In Fig. 2, form by upper header 6, lower collecting box 11, comb 10 and special shaped brick 13.

Fig. 3 is the utility model calandria structure figure.

Filling fire resisting material 14 in the middle of the comb 10 in Fig. 3.

Fig. 4 is the structure chart of the utility model shell.

Shell 7 can be welded into double-layer plate, leakes water in the centre.

Fig. 5 is the another kind of structure chart of the utility model shell.

Shell 7 can be built into block refractory material 14 and insulation material in the individual layer steel plate 15.

Claims

1, crosswind high seam smokeless combustion equipment, be to constitute, it is characterized in that by coal bunker (1), grid (2), fire door (3), fire grate (4), ash door (5), upper header (6), shell (7), arch tube (8), fin (9), comb (10), lower collecting box (11), secondary air box (12):

A, upper header (6), lower collecting box (1) 1, fin (9) and comb (10) constitute pigeon-holed wall jointly;

The passage that b, shell (7), grid (2) and pigeon-holed wall surround can be vertical, tilting or band bending section.

2, crosswind high seam smokeless combustion equipment according to claim 1 is characterized in that:

Pigeon-holed wall structure can be welded into or be made up of upper header (6), lower collecting box (11), comb (10) and special shaped brick (13) by upper header (6), lower collecting box (11), comb (10) and fin (9), or is built into or is made of refractory material (14) at comb (10) centre filling fire resisting material (14) or by special shaped brick (13).

3, crosswind high seam smokeless combustion equipment according to claim 1 is characterized in that:

Upper header (6), lower collecting box (1) 1, comb (1) and arch tube (8) profile can be garden shape, square or polygonal.

4, crosswind high seam smokeless combustion equipment according to claim 1, it is characterized in that: the structure of shell (7) can be a double-layer plate weldering system, leakes water and build refractory material (14) and insulation material in a water-cooled shell type or the individual layer steel plate (5) or be built into by refractory material and insulation material entirely in the centre.

5, crosswind high seam smokeless combustion equipment according to claim 1 is characterized in that: the structure of grid (2) can be welded into or be formed or cast whole or the water-cooled hollow type or refractory material is built by laying bricks or stones by single cast iron bar by steel plate.