CN2258261Y

CN2258261Y - Coal-fired direct heat-exchanging furnace with dust-removing desulphurizing function

Info

Publication number: CN2258261Y
Application number: CN 96205105
Authority: CN
Inventors: 陈星照; 周齐; 钱秋星; 金宏才
Original assignee: Shuangyi Energy-Saving Environmental Protection Technological Research Center B
Current assignee: Shuangyi Energy-Saving Environmental Protection Technological Research Center B
Priority date: 1996-03-11
Filing date: 1996-03-11
Publication date: 1997-07-23
Anticipated expiration: 2006-03-11

Abstract

The utility model relates to a coal-fired direct heat-exchanging furnace with dust-removing desulphurizing function. A hollow barrel-shaped furnace liner whose upper end is provided with an edge port is fixedly connected between an upper and a lower water collecting tanks, the upper and the lower ends of the furnace liner are respectively sheathed with an upper and a lower flow guiders in which blades are arranged, and a firing chamber is communicated with the upper and the lower flow guiders, the furnace liner and a chimney. The water flow of the upper water collecting tank passes through the edge port of the furnace liner and then flows to a hot water outlet along the inner wall face of the furnace liner from top to bottom, and flue gas rotates and ascends to the blades of the upper flow guider from the blades of the lower flow guider to be discharged. The utility model uses coal as fuel, the heat energy of the fired coal directly heats medium water so that the utility model has high heat efficiency, and a water film formed in the furnace liner can direct catch dust in the flue gas so that the utility model can reduce the quantity of sulfur dioxide discharged to atmosphere.

Description

The coal-fired direct heat transfer stove of tool dust-removal and desulfurizing function

The utility model relates to a kind of the feed-water heater of making combustion apparatus, the especially direct heat transfer of fuel of coal.

Up to now, existing combustion apparatus is to the heating of working medium, and the overwhelming majority finishes by the metal heat-transfer surface, be so-called indirect working medium, recently existing people adopts oil, vapour to act as a fuel, and working-medium water is directly heated, make catchment, the water heater of fire in same flue.This water heater has improved the thermal efficiency, but the fuel price height of fuel oil or combustion vapour.As adopt premium to act as a fuel, and though reduced the pollution waste gas of environment is relatively easily handled, yet reduced comprehensive utilization possibility gasoline, as adopting heavy oil combustion, the processing again of hot water and waste gas also is very complicated work.

The purpose of this utility model is to propose a kind of utilization to distribute extensively the direct heat transfer stove that inexpensive fire coal acts as a fuel.The heating furnace that in the past adopted coal is perplexing vast efforts at environmental protection person for a long time because of a series of air environmental pollution problems that coal smoke, dust cause.The direct heat transfer stove scheme that the utility model proposes when obtaining fuel thermal energy, helps solving coal smoke, and dust is to the pollution problem of atmosphere.

Utility model is to realize like this

A kind of coal-fired direct heat transfer stove of tool dust-removal and desulfurizing function, comprise furnace base 15, with the lower condensate sump 4 that base is connected, combustion chamber 16, flue 14, chimney 8, it is characterized in that: the tubular flue 14 of affixed hollow upper end band bead in the upper and

lower header tank

3,4 that is communicated with lifting pipe 7, the upper and lower end of described flue 14 is the upper and lower air deflector 2,1 of the inner installing of socket blade 17 respectively, combustion chamber 16 and upper and lower air deflector 2,1, flue 14, chimney 8 is communicated with; The current of upper condensate sump 3 flow to hot water outlet 5 from top to bottom by the bead attaching inboard wall of furnace wall of flue.Upper and lower air deflector 2,1 sets firmly blade 17 near the contact jaw of tubular flue, the vertical aspect of line OA of blade end point of contact A and tubular flue 14 central point O and blade end tangent line angle＜α-45 °～50 °.Blade 17 orientations that the corresponding position sets firmly in the upper and lower air deflector 2,1 are identical.Stretch in the tubular flue 14 after the bottom of chimney 8 and last water conservancy diversion 2 are affixed.The bottom of following air deflector 1 is the inwall that horn mouth opens and be fixed in the base water jacket.

The utlity model has following characteristics:

1, adopt widely distributed, inexpensive coal to make fuel.

2, it is fast that the direct heating working medium water of the heat energy of coal combustion, heat are imitated high, hot effect.

3, the moisture film that forms in the flue can directly be caught dust in flue gas, particularly catches the fine dust that those can't be caught with common cyclon dust collector, and is very favourable to the dust pollution that the minimizing flue gas enters in the atmosphere; Sulfur in smoke directly is dissolved in the hot water of closed circulation, reduces to airborne release sulfur dioxide quantity.

4, owing to direct heat transfer, can reduce the consumption of metal heat-transfer surface to greatest extent, saved material.

5, dust-containing water of collecting and the water that is dissolved with sulfur dioxide are closed operations, can not pollute atmospheric environment.Concentrate and the water of closed operation, provide advantage for further handling with purification.

Fig. 1 the utility model structural profile schematic diagram

Fig. 2 the utility model B-B cross sectional plan view

Now further narrate structure of the present utility model in conjunction with the accompanying drawings

Referring to Fig. 1-2: bunker coal footpath coal-feeding door 12, send into burner hearth.And at fire grate 11 up-ignitings.Burning can gravity-flow ventilation, or force ventilation.In burner hearth, take a preliminary measure, in the hope of improving smoke effect.Gas fume after burning, by the air deflector 1 of burner hearth top, upwards diffluence in rotary manner.Red-hot flue gas in revolving the process of liter, is washing away the barrel of flue 14.And be attached on the barrel with stream, top-down water film meets.The process of sweep of gases water film promptly is the process of hot flue gas and water generation heat exchange.Pollutant such as dust in flue gas, sulfur dioxide also declines into moisture film or soluble in water in this process.Washed away the flue gas of barrel, be subjected to the restriction of top header tank 3, then by last air deflector 2, to induce outflow with former identical direction.Enter chimney 8 then.

The moisture film that adheres on the barrel is the water inlet 6 by the body of heater bottom, by sewage pump, and at first enters body of heater bottom water jacket.Under the promotion of pump power, the water in the water jacket, footpath are arrived in the top header tank 3 by lifting pipe 7.When rising water stage surpasses flue 14 top beads, promptly downward by bead, attach barrel and flow down, make down flowing water attach barrel all the time, formation certain thickness moisture film, and unlikelyly splash everywhere.Water is in dirty process, and the red-hot flue gas that washes away barrel with rotation intersects, meets, and finishes direct heat transfer.The heat that fuel produces converts the heat energy of water to.Water after being heated collects in lower condensate sump 4, is discharged by delivery port 5.Leaving water temperature can reach more than 90 ℃, becomes available working medium.After filtration and purified treatment, can receive secondary heat exchanger, be transported to thermal field institute then.Water through after the filtration, purification processing is pumped into water jacket once more, the circulation so of a beginning new round.Dotted lines is a flue gas among the figure, and arrow is represented water (flow) direction.

Claims

1, a kind of coal-fired direct heat transfer stove of tool dust-removal and desulfurizing function, comprise furnace base (15), the lower condensate sump (4) that is connected with base, combustion chamber (16), flue (14), chimney (8), it is characterized in that: the tubular flue (14) of affixed hollow upper end band bead in the upper and lower header tank (3) that is communicated with lifting pipe (7), (4), the upper and lower end of described flue (14) is upper and lower air deflector (2), (1) of socket inner installing blade (17) respectively, and combustion chamber (16) are communicated with upper and lower air deflector (2), (1), flue (14), chimney (8); The current of upper condensate sump (3) flow to hot water outlet (5) from top to bottom by the bead attaching inboard wall of furnace wall of flue.

2, press the coal-fired direct heat transfer stove of the described tool dust-removal and desulfurizing of claim 1 function, it is characterized in that: upper and lower air deflector (2), (1) set firmly blade (17) near the contact jaw of tubular flue, the line OA vertical direction of blade end point of contact A and tubular flue (14) central point O and blade end tangent line angle＜α=and 45 °～50 °.

3, by the coal-fired direct heat transfer stove of the described tool dust-removal and desulfurizing of claim 1 function, it is characterized in that: blade (17) orientation that the corresponding position sets firmly in upper and lower air deflector (2), (1) is identical.

4, by the coal-fired direct heat transfer stove of the described tool dust-removal and desulfurizing of claim 1 function, it is characterized in that: stretch in the tubular flue (14) after the bottom of chimney (8) and last air deflector (2) are affixed.

5, by the coal-fired direct heat transfer stove of the described tool dust-removal and desulfurizing of claim 1 function, it is characterized in that: the bottom of following air deflector (1) is the inwall that horn mouth opens and be fixed in the base water jacket.