CN201589407U

CN201589407U - Coal-fired gasification boiler

Info

Publication number: CN201589407U
Application number: CN2009203519861U
Authority: CN
Inventors: 任二平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-31
Filing date: 2009-12-31
Publication date: 2010-09-22
Anticipated expiration: 2019-12-31

Abstract

The utility model pertains to the field of boiler technology, specifically to a coal-fired gasification boiler, which resolves the insufficient heat efficient utilization problem of the gasification boiler in the prior art. The coal-fired gasification boiler is characterized in that a problem that a downward combusting coal gas generating chamber is arranged between an obverse-burning coal gas generating chamber and a heat absorption section, an obverse-burning coal adding stove door of the obverse-burning coal gas generating chamber and a downward combusting coal adding stove door of the downward combusting coal gas generating chamber are both provided on the front surface of the boiler. The fire output mouth communicating the combustion chamber and the heat absorption section occupies the entire width direction of the combustion chamber. The utility model has beneficial effect that it adopts a structure combining the obverse and reverse coal gas generating chambers with the obverse and reverse, as well as positive and negative-pressure combustion, to further overcome force output and fire output insufficiency of other coal-fired gasification boilers, simultaneously the fire output mouth is larger enough to be avail to heat efficient utilization of the boiler.

Description

Coal-fired coal gasification boiler

Technical field

The utility model belongs to the technical field of boiler, is specifically related to a kind of coal-fired coal gasification boiler.

Background technology

The applicant provides a kind of coal-fired coal gasification boiler as the inventor's in first to file 200920103759.7, coal-fired coal gasification boiler, comprise just burn gas generation chamber and reverse-burning gas generation chamber that top interconnects, the generation chamber that just burning gas bottom is provided with just burns fire grate, just burning fire grate below high-pressure blast and water-stop pond are set, the top is the generating region that just burns gas; Reverse-burning gas generation chamber bottom is provided with anti-burn grate, and the anti-burn grate below is provided with the combustion chamber and has the crater that is communicated with the district of absorbing heat, and the top is the reverse-burning gas generating region; Secondary high-pressure wind is established in reverse-burning gas generating region top, and heat absorption is provided with heat-absorbing water pipe in the district, and top, heat absorption district has exhanst gas outlet.The beneficial effects of the utility model: adopt positive and negative gas generating chamber and positive and negative and positive and negative pressure burning structure combining, overcome the deficiency that other coal-fired gasification furnace is exerted oneself and fired, dispose air-introduced machine simultaneously, both eliminated potential safety hazard, make the fireman easy to operate again.But there is a little problem in this coal-fired coal gasification boiler: the same side in heat absorption district is provided with just burning gas generation chamber and reverse-burning gas generation chamber simultaneously, the combustion chamber of reverse-burning gas generation chamber below communicates by crater with the heat absorption district, so just burning, the reverse-burning gas generation chamber space that is provided with is limited, crater is not enough big, and it is unfavorable that the heat of boiler is effectively utilized.

Summary of the invention

The utility model provides a kind of novel coal-fired coal gasification boiler in order to solve the effectively under-utilized problem of coal gasification boiler heat in the prior art.

The utility model adopts following technical scheme to realize: coal-fired coal gasification boiler, comprise just burn gas generation chamber and reverse-burning gas generation chamber that top interconnects, the generation chamber that just burning gas bottom is provided with just burns fire grate, just burning fire grate below high-pressure blast and water-stop pond are being set, just burn the fire grate top and be the generating region that just burns gas, reverse-burning gas generation chamber bottom is provided with anti-burn grate, the anti-burn grate below is provided with the combustion chamber and has the crater that is communicated with the district of absorbing heat, the anti-burn grate top is the reverse-burning gas generating region, secondary high-pressure wind is established in reverse-burning gas generating region top, heat absorption is provided with some heat-absorbing water pipes in the district, top, heat absorption district has exhanst gas outlet, it is characterized in that the reverse-burning gas generation chamber is arranged at just burns gas between generation chamber and the heat absorption district, and the anti-burning district that the district adds coal stove door and reverse-burning gas generating region of just burning of the generating region that just burning gas adds the front that coal stove door all is arranged at boiler.The crater that so is communicated with combustion chamber and heat absorption district occupies the whole width of combustion chamber.

The utlity model has following beneficial effect:

1, the reverse-burning gas generation chamber is arranged at and just burns gas between generation chamber and the heat absorption district, the effect of a coupling and a secondary high-pressure air blast, and the area of increase combustion space and crater, it is more abundant to burn, and is more conducive to the heat absorption of heat absorption district.

2, the negative-pressure firing method that adopts positive and negative pressure to combine makes boiler attendance convenient.

3, adopt the water pipe heat-absorbing structure, eliminated the fire tube structure and easily caused fire tube inwall dust stratification and obstruction, make the heat absorption of boiler bad, the drawback of waste fuel.

4, adopt fin type horizontal water tube return structures, both increased the volume of heating surface, minimizing stove, increase the flow velocity of flue gas again.

Description of drawings

Fig. 1 looks the internal structure schematic diagram for master of the present utility model

Fig. 2 is a side-looking internal structure schematic diagram of the present utility model

Fig. 3 is a plan structure schematic diagram of the present utility model

Among the figure: 1-water-stop pond, 2-slag notch, 3-are just burning fire grate, 4-is just burning the district and is adding coal stove door, 5-anti-burn grate, 6-ash poking mouth, 7-is counter, and the district of burning adds coal stove door, 8-combustion chamber, 9-secondary high-pressure wind, the 10-water layer, 11-by-passing valve, 12-bypass pipe, the 13-heat-absorbing water pipe, 14-inspection socket, 15-air-introduced machine, 16-chimney, 17-devulcanizer, the 18-generating region that just burning gas, the 19-crater, the 20-high pressure blower, high-pressure blast of 21-, the backhaul of 22-fin type, the 23-cleaning door, 24-desulfurization pond, 25-gas exit, 26-reverse-burning gas generating region

The specific embodiment

In conjunction with the accompanying drawings the specific embodiment of the present utility model is described further.

A kind of coal-fired coal gasification boiler, comprise just burn gas generation chamber and reverse-burning gas generation chamber that top interconnects, the generation chamber that just burning gas bottom is provided with just burns fire grate 3, just burning fire grate 3 belows high-pressure blast 21 and water-stop pond 1 are being set, just burn fire grate 3 tops and be the generating region 18 that just burns gas, reverse-burning gas generation chamber bottom is provided with anti-burn grate 5, anti-burn grate 5 belows are provided with combustion chamber 8 and have the crater 19 that is communicated with the district of absorbing heat, the anti-burn grate top is a reverse-burning gas generating region 26, secondary high-pressure wind 9 is established in reverse-burning gas generating region 26 tops, heat absorption is provided with some heat-absorbing water pipes 13 in the district, top, heat absorption district has exhanst gas outlet, the reverse-burning gas generation chamber is arranged at and just burns gas between generation chamber and the heat absorption district, and the anti-burning district that the district adds coal stove door 4 and reverse-burning gas generating region 26 of just burning of the generating region that just burning gas 18 adds the front that coal stove door 7 all is arranged at boiler.As Fig. 1 represented be front of the present utility model, the utility model definition front is a length direction.

As shown in Figure 3, the side of the utility model definition boiler is a width, the reverse-burning gas generation chamber is arranged at and just burns gas between generation chamber and the heat absorption district, makes the crater 19 that is communicated with combustion chamber and heat absorption district occupy the whole width of combustion chamber, makes crater big as far as possible.

Just burning the mixed gas that produces on the fire grate and used heat by arriving the reverse-burning gas generating region 26 on anti-burn grate tops, under the effect of secondary high-pressure wind 9 and air-introduced machine 15, penetrating the combustion chamber 8 that coal seam and burnt layer on the anti-burn grate 5 enter below the anti-burn grate and burn with the gas outlet 25 that do not have above the anti-burn grate.Enter the heat absorption district through crater again and carry out abundant heat exchange by some heat-absorbing water pipes 13, fin type backhaul 22 is adopted in the backhaul of heat-absorbing water pipe 13, both increase boiler heating surface, reduced the volume of boiler, strengthen the flow velocity of flue gas again, boiler is exerted oneself to greatest extent, enter atmosphere by devulcanizer 17 and air-introduced machine 15 at last.Be provided with desulfurization pond 24 below the devulcanizer 17, whole combustion process is dustless, smokeless, environmental protection, energy-conservation.

The top of endothermic tube and fin type backhaul has inspection socket 14, bottom that cleaning door 23 is arranged.Air-introduced machine 15 is arranged at the boiler top, has not only saved residual air local but also that reduce desulphurization plant and has taken out of.

The generation chamber that just burning gas is provided with the bypass pipe 12 that is connected with chimney 16, and by-passing valve 11 is installed on the bypass pipe, when burn-out, does not have the residual air of after-flame to discharge by this valve.

Operation principle of the present utility model: coal adds when just burning gas generation chamber, the mixed gas and the used heat that produce under the wind action of a malleation high pressure enter the reverse-burning gas generation chamber by connector, under the effect of high wind of secondary malleation and air-introduced machine, the coal seam, Jiao's layer that penetrate the reverse-burning gas generating region enter the combustion chamber with anti-burn grate and fully burn, entering heat absorption district and fin type backhaul at last carries out after heat joins, enter chimney by desulfurizer, whole process reaches environmental protection, the energy-saving effect of smokeless and dust free.

Claims

1. coal-fired coal gasification boiler, comprise just burn gas generation chamber and reverse-burning gas generation chamber that top interconnects, the generation chamber that just burning gas bottom is provided with just burns fire grate (3), just burning fire grate (3) below a high-pressure blast (21) and water-stop pond (1) are being set, just burning fire grate (3) top and be the generating region that just burns gas (18), reverse-burning gas generation chamber bottom is provided with anti-burn grate (5), anti-burn grate (5) below is provided with combustion chamber (8) and has the crater (19) that is communicated with the district of absorbing heat, the anti-burn grate top is reverse-burning gas generating region (26), secondary high-pressure wind (9) is established in reverse-burning gas generating region (26) top, heat absorption is provided with some heat-absorbing water pipes (13) in the district, top, heat absorption district has exhanst gas outlet, it is characterized in that the reverse-burning gas generation chamber is arranged at just burns gas between generation chamber and the heat absorption district, and the anti-burning district that the just burning district of the generating region that just burning gas (18) adds coal stove door (4) and reverse-burning gas generating region (26) adds the front that coal stove door (7) all is arranged at boiler.