CN2060527U - Vertical double furnace tank coal hot-blast stove - Google Patents

Abstract

The utility model relates to a vertical coal-fired hot blast furnace with double hearths, which is composed of a hearth and a tube array type smoke and fire box, wherein the hearth is composed of an inner wall of a jacket, a back wall of the hearth and a top cap of the hearth, and the hearth divided into two hearths by a hearth spacer plate. A passage port is formed on the hearth spacer plate, flue ports of the two hearths are respectively formed on the back wall of the hearth, and hearth baffles are respectively arranged on the flue ports. The utility model has the advantages of complete fume combustion, high thermal efficiency, detachable performance of easily burnt pieces, etc. The blackness of the exhaust fume can reach 0.5 stage (Ringelmen chart), and the thermal efficiency is more than 75%. The thermal efficiency of 15 myriad kcals per hour is 77.7%.

Description

Vertical double furnace tank coal hot-blast stove

The utility model relates to a kind of heating and drying plant of hot-air central heating.It is a kind of vertical twin furnace coal-fired hot-blast stove.

It is the vertical double stage coal combustion furnace for ventilating warm air of CN86102552A that known vertical fire coal hot-blast stove has patent publication No..The characteristics of this stove are to have adopted double-layer grate, make flue gas completing combustion, and flue dust is few, and smoke density and blackness are all more satisfactory, and heat exchange is good, and the thermal efficiency is higher.But owing to adopt double-layer grate to have following shortcoming: (1) upper grate is under the high temperature action always, though also cool off by air, because of the heat transfer coefficient of air own very little, the still easy scaling loss of fire grate, and fire grate is fixed, stove must be cut open the chest during replacing, and maintenance is trouble very.When (2) operating, the coal that constantly with poker upper grate is being fired is hooked to lower floor's fire grate, and labor strength is big, dust pollution is serious, is unfavorable for environmental sanitation and workers ' health.(3) must make anthracite, the lump coal of making good use of, higher to the quality requirement of coal, less with the coal scope.

The purpose of this utility model provides and a kind ofly can overcome the vertical twin furnace coal-fired hot-blast stove that above-mentioned shortcoming makes easy scaling loss part change easily again.

For achieving the above object, shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, the burner hearth of forming by chuck inwall (1), burner hearth rear wall (2), burner hearth top cover (4), be divided into (5) and (6) two burner hearths with burner hearth baffle (3), have passway (15) on the burner hearth baffle (3), passage flange (16) is housed in the passway.Have floss hole (9) and (10) of two burner hearths on the burner hearth rear wall (2), flue flange (17) and (18) are housed respectively in floss hole (9), (10), damper (11) and (12) opening or close with rotating shaft (13) and (14) are housed on flue flange (17) and (18).

Burner hearth rear wall (2), burner hearth baffle (3), damper (11) and (12), rotating shaft (13) and (14), passage flange (16), flue flange (17) and easy scaling loss parts such as (18) are for can change part, wherein damper (11) and (12), rotating shaft (13) and (14), passage flange (16), flue flange (17) and (18) they are heat proof material.

Combustion system of the present utility model has adopted double-furnace structure, and air system has adopted multiple chuck, devices such as many horizontal rows pipe and multilayer insulating panel, and during use, two burner hearths are coal alternately, opens and closes floss hole (9) and (10) of two burner hearths alternately.Promptly when throwing coal, right bearth must earlier the floss hole behind the right bearth be blocked with damper, the flammable black smoke that right bearth is produced enters in the left hearth by the passway between two burner hearths (15), what at this moment the left hearth fire was just burning is very prosperous, the flammable black smoke that right bearth is come carries out second-time burning, the floss hole of gas fume after burning behind the left hearth discharged burner hearth (because at this moment the floss hole of left hearth is just being opened), behind the process certain hour, when right bearth very prosperous, just the damper behind the right bearth is not opened during over-emitting black exhaust.During toward the left hearth coal, operate the same.Two burner hearth flue gases all are fully burned, so oke exhaust blackness is very little, has only 0.5 grade (Lin Geman chart).The burning of coming out from burner hearth is flue gas more completely, the tubulation of through the multilayer traverse stop that when reaching exhaust opening, the dust content of flue gas is very little, dust exhausting concentration is less than 100 milligrams/mark rice ³Besides air system, from the next cold air of air blast, through the chuck that is provided with around the burner hearth, after the width of cloth around a large amount of absorption burner hearths is penetrated heat, enter tubulation bundle (20), because the effect of multilayer insulating panel (29), make air return high-temperature flue gas multiple and that pipe is outer and carry out heat exchange, therefore thermal efficiency height is more than 75%, 150,000 kilocalories/time the thermal efficiency be 77.7%.

Embodiment accompanying drawings of the present utility model is as follows:

Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the C--C cutaway view of Fig. 1, and Fig. 3 is the A--A cutaway view of Fig. 1, and Fig. 4 is the B--B cutaway view of Fig. 1.(1) is the chuck inwall among the figure, (2) be the burner hearth rear wall, (3) be burner hearth baffle, (4) be the burner hearth top cover, (5) be right bearth, (6) be left hearth, (7) be the coal filling hole of right bearth, (8) be the coal filling hole of left hearth, (9) be the floss hole of right bearth, (10) be the floss hole of left hearth, (11) be the right bearth baffle plate, (12) be the left hearth baffle plate, baffle plate (11) and (12) are heat-resisting cast iron spare, (13) be right bearth baffle plate rotating shaft, (14) be the rotating shaft of left hearth baffle plate, rotating shaft (13) and (14) are heat-resisting steel part, (15) be passway on the burner hearth baffle, (16) are the passage flanges, and (17) are the flanges of floss hole (9), (18) be the flange of floss hole (10), flange (16), (17) and (18) be heat-resisting cast iron spare, (19) are the outer walls of stove, (20) are the tubulation bundles, (21) be exhaust opening, (22) be the cold wind import, (23) are hot-blast outlets, and (24) are the fireworks channels behind the burner hearth, (25) be the pyrotechnics case, (26) the ground floor chuck of forming by outer wall (19) and chuck inwall (1), (27) are the dividing plates between ground floor chuck and the second layer chuck, there is 120 ° breach (as shown in Figure 4) this dividing plate front, (28) be second layer chuck, (29) be the air duct dividing plate, (30) are the burner hearth manholes, and (31) are the force ventilation mouths, (32) be cleanout door, (33) are the ash removing openings of pyrotechnics case.

As shown in Figure 2, high-temperature flue gas by two burner hearth floss holes (9) and (10) eject by fireworks channel (24) vertically upward, enters and sweeps away tubulation bundle (20) in the pyrotechnics case (25), after carrying out heat exchange with inner air tube, discharge by exhaust opening (21).Cold air is then sent into cold wind import (22) by air blast, after entering burner hearth ground floor chuck (26) on every side, under the effect of dividing plate (27), make air around burner hearth by after flow forward, the width of cloth that absorbs the burner hearth Lower Half is penetrated heat, breach by 120 ° of dividing plate (27) fronts upwards flows then, enter in the second layer chuck (28) again by flowing around burner hearth behind the forward direction, the width of cloth that absorbs the burner hearth first half is penetrated heat, enter then in the tubulation bundle (20), because stopping of dividing plate (29), make air in the tubulation bundle, walk a plurality of backhauls, return the heat exchange of multiple long period with the outer high-temperature flue gas of tubulation, discharge by hot-blast outlet (23) after reaching required temperature, be sent to used part by pipeline.

Claims (5)

1, a kind of vertical twin furnace coal-fired hot-blast stove of forming by burner hearth and shell and tube pyrotechnics case, it is characterized in that, the burner hearth of forming by chuck inwall (1), burner hearth rear wall (2), burner hearth top cover (4), be divided into (5) and (6) two burner hearths with burner hearth baffle (3), have passway (15) on the burner hearth baffle (3), have floss hole (9) and (10) of two burner hearths on the burner hearth rear wall (2), and damper (11) and (12) are housed respectively on floss hole (9), (10).

2, by the described hot-blast stove of claim 1, it is characterized in that flange all is equipped with in passway (15) and floss hole (9), (10).

3, it is characterized in that by the described hot-blast stove of claim 1, damper (11) and (12) opening or close with rotating shaft (13) and (14) are housed on flue flange (17) and (18).

By claim 2,3 described hot-blast stoves, it is characterized in that 4, passage flange (16), flue flange (17) and (18), damper (11) and (12), rotating shaft (13) and (14) are heat proof material.

5, by the described hot-blast stove of claim 4, it is characterized in that passage flange (16), flue flange (17) and (18), damper (11) and (12) they are heat-resisting cast iron spare, rotating shaft (13) and (14) they are heat-resisting steel part.