CN203222596U

CN203222596U - Top combustion stove

Info

Publication number: CN203222596U
Application number: CN 201320109567
Authority: CN
Inventors: 刘世聚
Original assignee: HENAN YUXING HOT BLAST STOVE ENGINEERING TECHNOLOGY Co Ltd
Current assignee: HENAN YUXING HOT BLAST STOVE ENGINEERING TECHNOLOGY Co Ltd
Priority date: 2013-03-12
Filing date: 2013-03-12
Publication date: 2013-10-02
Anticipated expiration: 2023-03-12

Abstract

The utility model relates to a top combustion stove which is simple in structure. The wall thickness of a heat accumulating chamber is 150-230mm, and the difference between the midperpendicular of the apex of an arch and 1/2 of inner wall diameter b of a straight cylinder section of the apex of the arch is 200-2500mm. The diameter of the apex of the arch of a combustion chamber is beneficially reduced, the stress reasonability of the apex of the arch is increased, reasonable dispersion and distribution of nozzles of a combustor are increased, and mixed high temperature flue gas is prevented from washing the apex of the arch of the combustion chamber circularly and circumferentially, so that partial burn and local high temperature are avoided, differential temperature and damage to the nozzles by high temperature combustion strength of the nozzles in blowing and combusting conversion period are dispersed, and effective multiple angle arrangement of the nozzles is adopted. Therefore, the flue gas flow field is uniformly distributed and the thermal efficiency is improved.

Description

A kind of top combustion stove

Technical field

The utility model relates to field of metallurgy, is specifically related to a kind of hotblast stove, particularly a kind of top combustion stove.

Background technology

Hotblast stove is the important utility appliance of blast furnace ironmaking engineering, is a kind of thermal apparatus of cycling service of heating at intermittence, improves wind-warm syndrome for the blast furnace safe operation, and energy efficient reduces production costs, and it is significant to reduce noxious gas emission.Present existing Combustion of Hot Air Furnace device; problem of various degrees all in structure and combination; usually can occur in the hotblast stove coal gas and air mixed not good (burner problem) and (or) air-flow skewness (combinatorial problem between burner and vault), thereby cause incomplete combustion or problems such as combustion instability, load adjustment ability difference.If also there is problem on the structure in combustion unit with cooperating of heat transfer-regenerative apparatus body, will cause the low phenomenon of hotblast stove heat-transfer effect difference and heat storage utilization ratio.Such hotblast stove obviously can not satisfy blast furnace to the air quantity of hot blast and the requirement of wind-warm syndrome, let alone efficient, the energy-conservation and environmental protection of hotblast stove, does not also accomplish the operation with security and stability under the high hot blast temperature.

Therefore, provide a kind of simple in structure, easy to operate, high efficiency, heat energy utilization rate height, thermal losses is little, energy-conserving and environment-protective, fuel saving is saved a kind of top combustion stove of investment, has vast market prospect.

Summary of the invention

At the deficiencies in the prior art, the utility model provides that a kind of simple in structure, easy to operate, high efficiency, heat energy utilization rate height, thermal losses are little, a kind of top combustion stove of energy-conserving and environment-protective, fuel saving, saving investment.

The technical solution of the utility model is like this: a kind of top combustion stove, comprise furnace body, be arranged on the combustion chamber of being formed by vault and vault direct tube section on furnace body top, the hot-blast outlet that is connected with the combustion chamber, be arranged on the regenerator of vault direct tube section bottom, be arranged on the burner of regenerator upper end outer wall, be installed in coal gas circuit and the air circuit of burner inside, gas pipe and the blast main that is connected with coal gas circuit and air circuit respectively, the gas-fired pipe nozzle that is communicated with coal gas circuit and combustion chamber, the air combustion pipe nozzle that is communicated with air circuit and combustion chamber, be arranged on the fire grate of regenerator bottom, be arranged on the cold air chamber of fire grate lower end, the cold wind inlet pipe that is connected with cold air chamber and cold wind outlet pipe, the wall thickness of described regenerator is 150 to 230 millimeters, and 1/2nd the difference of the midperpendicular c of vault and vault direct tube section inner diameter b is 200 to 2500 millimeters.

The opening of described gas-fired pipe nozzle and air combustion pipe nozzle all is arranged on the top of regenerator body of wall or the inboard of vault direct tube section bottom.

The utlity model has following positively effect: the utility model is simple in structure, the wall thickness of described regenerator is 150 to 230 millimeters, a difference of/2nd of the midperpendicular c of vault and vault direct tube section inner diameter b is 200 to 2500 millimeters, be conducive to dwindle the diameter of combustion chamber vault, increase the stressed reasonableness of vault construction, increase the reasonable discrete distribution of burner nozzle, disperseed the mixing high-temperature flue gas that the combustion chamber circumferential high temperature of vault ring-type is washed away, inclined to one side burning and localized hyperthermia have been avoided, disperseed nozzle position high-temp combustion intensity being blown in the nozzle position, the burning change-over period has been caused differential temperature and damage, and nozzle taked the multi-angle setting effective, cause flue gas flow field to be evenly distributed, improved thermo-efficiency; The utility model has effectively been realized the rational temperature distribution with temperature of combustion to the combination of whole combustion chamber, has reached the stable of chamber structure, longevity, and specific data limit has more reasonably embodied this characteristic, has good society and economic benefit.

Description of drawings

Fig. 1 is one of structural representation of the present utility model.

Fig. 2 is one of cross sectional view of the utility model Fig. 1.

Fig. 3 be the utility model Fig. 1 cross sectional view two.

Fig. 4 is two of structural representation of the present utility model.

Fig. 5 is the structure for amplifying synoptic diagram at the utility model Figure 1A place.

Fig. 6 is the structure for amplifying synoptic diagram at the utility model Fig. 4 B place.

Embodiment

As Fig. 1,2,3,4,5, shown in 6, a kind of top combustion stove, comprise furnace body 1, be arranged on the combustion chamber of being formed by vault 2 and vault direct tube section 38 on furnace body 1 top, the hot-blast outlet 9 that is connected with combustion chamber 8, be arranged on the regenerator 10 of vault direct tube section 3 bottoms, be arranged on the burner 12 of regenerator 10 upper end outer walls, be installed in coal gas circuit 13 and the air circuit 14 of burner 12 inside, the gas pipe 15 that is connected with coal gas circuit 13 and air circuit 14 and blast main 16 respectively, the gas-fired pipe nozzle 11 that is communicated with coal gas circuit 13 and combustion chamber 8, the air combustion pipe nozzle 17 that is communicated with air circuit 14 and combustion chamber 8, be arranged on the fire grate 4 of regenerator 10 bottoms, be arranged on the cold air chamber 5 of fire grate 4 lower ends, the cold wind inlet pipe 7 that is connected with cold air chamber 5 and cold wind outlet pipe 6, the wall thickness of described regenerator 10 are 150 to 230 millimeters, and 1/2nd the difference of the midperpendicular c of vault 2 and vault direct tube section 3 inner diameter b is 200 to 2500 millimeters.

The opening of described gas-fired pipe nozzle 11 and air combustion pipe nozzle 17 all is arranged on the top of regenerator 10 bodies of wall or the inboard of vault direct tube section 3 bottoms.

Embodiment 1: as Fig. 1,2,3, shown in 5, a kind of top combustion stove, comprise furnace body 1, be arranged on the combustion chamber of being formed by vault 2 and vault direct tube section 38 on furnace body 1 top, the hot-blast outlet 9 that is connected with combustion chamber 8, be arranged on the regenerator 10 of vault direct tube section 3 bottoms, be arranged on the burner 12 of regenerator 10 upper end outer walls, be installed in coal gas circuit 13 and the air circuit 14 of burner 12 inside, the gas pipe 15 that is connected with coal gas circuit 13 and air circuit 14 and blast main 16 respectively, the gas-fired pipe nozzle 11 that is communicated with coal gas circuit 13 and combustion chamber 8, the air combustion pipe nozzle 17 that is communicated with air circuit 14 and combustion chamber 8, be arranged on the fire grate 4 of regenerator 10 bottoms, be arranged on the cold air chamber 5 of fire grate 4 lower ends, the cold wind inlet pipe 7 that is connected with cold air chamber 5 and cold wind outlet pipe 6, the wall thickness of described regenerator 10 are 230 millimeters, and 1/2nd the difference of the midperpendicular c of vault 2 and vault direct tube section 3 inner diameter b is 200 to 2500 millimeters.The opening of described gas-fired pipe nozzle 11 and air combustion pipe nozzle 17 all is arranged on the top of regenerator 10 bodies of wall.

At present; the combustion chamber vault of traditional hotblast stove adopts the taper vault; the isosceles triangle vault; spherical vault; left and right sides size combinations vault; the capable vault of peaked cap; structure formation such as big or small vault up and down; in the long-term production practice; structural instability has appearred in the vault of said structure; stressed factor such as unreasonable; at high temperature work for a long time; subsiding appears in vault; fall problems such as brick; be seriously to restrict hotblast stove to improve wind-warm syndrome; improve thermo-efficiency; the important factor that reduces cost; therefore; the opening of gas-fired pipe nozzle 11 and air combustion pipe nozzle 17 all is arranged on the top of regenerator 10 bodies of wall; the wall thickness of regenerator 10 is 230 millimeters; a difference of/2nd of the midperpendicular c of vault 2 and vault direct tube section 3 inner diameter b is 200 to 2500 millimeters; can effectively avoid above-mentioned defective; and; through test; specific data can the better protection vault; improved the work-ing life of vault; reduced the cost of maintenance and maintenance; improved working efficiency; the cross section of effectively having controlled vault is excessive; the combustion chamber vault is excessive, and strong and combustion chamber vault is stablized under hot environment.Nozzle can be arranged on regenerator 10 body of wall internal circumference direction positions in the outer part, and perhaps position in the inner part perhaps arranges between two parties, all can realize the purpose of this utility model.

Embodiment 2: as Fig. 4, shown in 6, a kind of top combustion stove, comprise furnace body 1, be arranged on the combustion chamber of being formed by vault 2 and vault direct tube section 38 on furnace body 1 top, the hot-blast outlet 9 that is connected with combustion chamber 8, be arranged on the regenerator 10 of vault direct tube section 3 bottoms, be arranged on the burner 12 of regenerator 10 upper end outer walls, be installed in coal gas circuit 13 and the air circuit 14 of burner 12 inside, the gas pipe 15 that is connected with coal gas circuit 13 and air circuit 14 and blast main 16 respectively, the gas-fired pipe nozzle 11 that is communicated with coal gas circuit 13 and combustion chamber 8, the air combustion pipe nozzle 17 that is communicated with air circuit 14 and combustion chamber 8, be arranged on the fire grate 4 of regenerator 10 bottoms, be arranged on the cold air chamber 5 of fire grate 4 lower ends, the cold wind inlet pipe 7 that is connected with cold air chamber 5 and cold wind outlet pipe 6, the wall thickness of described regenerator 10 are 150, and 1/2nd the difference of the midperpendicular c of vault 2 and vault direct tube section 3 inner diameter b is 200 to 2500 millimeters.The opening of described gas-fired pipe nozzle 11 and air combustion pipe nozzle 17 all is arranged on the inboard of vault direct tube section 3 bottoms.

At present; the combustion chamber vault of traditional hotblast stove adopts the taper vault; the isosceles triangle vault; spherical vault; left and right sides size combinations vault; the capable vault of peaked cap; structure formation such as big or small vault up and down; in the long-term production practice; structural instability has appearred in the vault of said structure; stressed factor such as unreasonable; at high temperature work for a long time; subsiding appears in vault; fall problems such as brick; be seriously to restrict hotblast stove to improve wind-warm syndrome; improve thermo-efficiency; the important factor that reduces cost; therefore; the opening of gas-fired pipe nozzle 11 and air combustion pipe nozzle 17 all is arranged on the inboard of vault direct tube section 3 bottoms; the wall thickness of regenerator 10 is 150 millimeters; a difference of/2nd of the midperpendicular c of vault 2 and vault direct tube section 3 inner diameter b is 200 to 2500 millimeters; can effectively avoid above-mentioned defective; and; through test; specific data can the better protection vault; improved the work-ing life of vault; reduced the cost of maintenance and maintenance; improved working efficiency; the cross section of effectively having controlled vault is excessive; the combustion chamber vault is excessive, and strong and combustion chamber vault is stablized under hot environment.Nozzle can be arranged on top direct tube section 3 and regenerator 10 body of wall angle positions, and opening can be realized the purpose of this utility model towards furnace body 1 inboard.

The utility model has realized that vault high temperature disperses, burner has a narrow range of temperature, furnace binding is reasonable, has given full play to the combined effect of hotblast stove, long service life, energy-saving and environmental protection, efficient.

Claims

1. top combustion stove, comprise furnace body (1), be arranged on the combustion chamber of being formed by vault (2) and vault direct tube section (3) (8) on furnace body (1) top, the hot-blast outlet (9) that is connected with combustion chamber (8), be arranged on the regenerator (10) of vault direct tube section (3) bottom, be arranged on the burner (12) of regenerator (10) upper end outer wall, be installed in burner (12) inner coal gas circuit (13) and air circuit (14), the gas pipe (15) that is connected with coal gas circuit (13) and air circuit (14) and blast main (16) respectively, the gas-fired pipe nozzle (11) that is communicated with coal gas circuit (13) and combustion chamber (8), the air combustion pipe nozzle (17) that is communicated with air circuit (14) and combustion chamber (8), be arranged on the fire grate (4) of regenerator (10) bottom, be arranged on the cold air chamber (5) of fire grate (4) lower end, the cold wind inlet pipe (7) that is connected with cold air chamber (5) and cold wind outlet pipe (6), it is characterized in that: the wall thickness of described regenerator (10) is 150 to 230 millimeters, and 1/2nd the difference of the midperpendicular c of vault (2) and vault direct tube section (3) inner diameter b is 200 to 2500 millimeters.

2. top combustion stove according to claim 1 is characterized in that: the opening of described gas-fired pipe nozzle (11) and air combustion pipe nozzle (17) all is arranged on the top of regenerator (10) body of wall or the inboard of vault direct tube section (3) bottom.