CN2347056Y - Mechanical fire grate coal-burning gasified burner - Google Patents

Abstract

The utility model discloses a mechanical fire grate coal-burning gasified burner. A coal gas outlet is arranged on the upper part of a mechanism fire grate (about the furnace arch point of an original mechanical fire grate furnace); the other furnace arches are closed for thickening coal feeding of the fire grate to form a gasified combustion chamber. The utility model can gasify and burn all coal kinds. The utility model has the characteristics of good gasifying burning transferring, complete mechanical and chemistry combustion of coal, high combustion heat efficiency, good smoke eliminating and dust removing effect, no need of special dust removing apparatus, no colour smoke drainage, no need of coal gas ignition chamber, and easy operation and control. Besides, the coal gas is automatically lighted by light fire in a gasified combustion chamber.

Description

Mechanical kiln grate furnace coal-fired gasifying combustion equipment

The utility model relates to a kind of mechanical kiln grate furnace coal-fired combustion equipment.

Existing machinery grate furnace coal-fired combustion equipment (comprising chain furnace grate furnace, reciprocating grate furnace, vibration stove grate furnace and stripping grate furnace etc.) burning has realized mechanization, alleviated labour intensity, having improved efficiency of combustion, is to use coal-fired combustion equipment more widely at present.But this kind equipment always is the combustion system that adopts coal directly to burn on fire grate, adopt this combustion system, fire grate heating temperature height burns out easily and breaks down, the combustion adaptive coal is poor simultaneously, burning anthracite and low-calorie coal be difficulty, and burning of coal process mechanism and chemical combustion, smoke abatement and dust control all are not so good as to adopt the effective of gasification, and combustion.

The purpose of this utility model provides the coal-fired combustion equipment that a kind of mechanical kiln grate furnace is realized coal-fired gasifying combustion.

For achieving the above object, technical solution of the present utility model is: above stoker fired grate the chimney arch place of former mechanical kiln grate furnace (greatly about) all the other all seal with chimney arch only to leave gas exit, make it to form gasification combustion chamber.With coal seam thickening on the fire grate, needed oxygen when making the primary air that can only under fire grate, enter gasification combustion chamber can not satisfy burning, the coal gas that produces in gasification combustion chamber during burning is burnt at secondary combustion chamber through replenishing auxiliary air once more by the gas exit ejection, because it is relative with the flow direction of gas smoke in the stove that the indoor fire grate of gasification, and combustion advances the direction of coal, add that the indoor free space height of gasification, and combustion is shorter relatively, be easy to make the new coal that enters gasification combustion chamber to be ignited at the gas exit place, slowly conduction downwards is anti-then burns.

Because the utility model has adopted said structure, the direct burning of mechanical kiln grate furnace is become gasification, and combustion, event is compared with the existing mechanical grate furnace has following characteristics: the coal that gasifiable burning is all, gasification, and combustion conducts, the machinery and the chemical combustion of coal are complete, the combustion thermal efficiency height, and smoke abatement and dust control is good, need not ad hoc cleaner, the colourless cigarette discharging of burning; Need not establish the coal gas ignition chamber, coal gas is lighted voluntarily by the indoor naked light of gasification, and combustion; And be easy to operate and control.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1---be structural representation of the present utility model and combustion gasification schematic diagram.

As shown in Figure 1, the utility model is the improvement to the existing machinery grate furnace, it by add coal bunker 1, secondary air mouth 3, stoker fired grate 5, second combustion chamber 6, inlet air plenum 7, a grey pit 10 are formed, the chimney arch place of former mechanical kiln grate furnace (greatly about) only left gas exit 4 all the other all seals with chimney arch 8 above stoker fired grate 5, makes it to form gasification combustion chamber 9.For new coal can be ignited rapidly, the utility model is arranged on gas exit 4 near an end that advances coal.Its combustion gasification process is that coal enters fire grate 5 by adding coal bunker 1, coal seam thickness reaches 500 millimeter, fire grate 5 is slowly sent adding the coal that coal bunker 1 falls into gasification combustion chamber 9, coal has formed after-flame clinker area 14, gasification zoneofoxidation 13, preheating and drying district 12 and has not fired district 11 in the gasification, and combustion Indoor Combustion, constantly toward the direction conduction combustion gasification of coal bunker 1, the lime-ash of after-flame falls in the water seal ash pit 10 burning zone.For preventing that coal gas from going out from the coal bunker string, can weld in the position, middle and lower part of coal bunker 1 and to imbed the coal gas choke tube 2 that communicates with inlet air plenum to stop the coal gas string to the coal bunker direction.

Claims (3)

1, a kind of by adding the mechanical kiln grate furnace coal-fired gasifying combustion equipment that coal bunker (1), secondary air mouth (3), stoker fired grate (5), second combustion chamber (6), an inlet air plenum (7), grey pit (10) are formed, it is characterized in that in stoker fired grate (5) top the chimney arch place of former mechanical kiln grate furnace (greatly about) only leave gas exit (4) all the other with all sealings of chimney arch (8), make it to form gasification combustion chamber (9).

2, mechanical kiln grate furnace coal-fired gasifying combustion equipment according to claim 1 is characterized in that gas exit (4) is arranged near an end that advances coal.

3, mechanical kiln grate furnace coal-fired gasifying combustion equipment according to claim 1 and 2 is characterized in that can welding in the position, middle and lower part that adds coal bunker 1 and imbeds the coal gas choke tube (2) that communicates with an inlet air plenum (7).

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