CN202835319U - Boiler for mixing combustion of blast-furnace gas and coke oven gas and coal - Google Patents
Boiler for mixing combustion of blast-furnace gas and coke oven gas and coal Download PDFInfo
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- CN202835319U CN202835319U CN201220564551.7U CN201220564551U CN202835319U CN 202835319 U CN202835319 U CN 202835319U CN 201220564551 U CN201220564551 U CN 201220564551U CN 202835319 U CN202835319 U CN 202835319U
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- gas
- burner hearth
- fire grate
- coke
- coal
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Abstract
The utility model relates to a boiler for mixing combustion of blast-furnace gas and coke oven gas and coal. The mixing combustion of the blast-furnace gas and the coke oven gas and the coal is utilized, and produced steam is used for supplying gas and generating the power. The technical scheme is adopted that the boiler for the mixing combustion of the blast-furnace gas and the coke oven gas and the coal is characterized in that a hearth is provided with a blast-furnace gas and coke oven gas mixing combustor above a fire grate, the fire grate is a reversed chain fire grate, and a mechanical air coal throwing device which is arranged above the fire grate is arranged on the front lateral side surface of the hearth. By the adoption of the scheme, the mixing combustion of the blast-furnace gas, the coke oven gas and the coal is utilized, and the produced steam is used for supplying the gas and generating the power.
Description
Technical field
The utility model relates to a kind of utilize blast furnace gas, coke-stove gas and coal mixed combustion, produces the boiler that steam is used for blast furnace gas, coke-stove gas and the coal mixed combustion of steam supply, generating.
Background technology
Blast furnace gas is the byproduct that produces in the blast furnace ironmaking process, and coke-stove gas is the byproduct of coking industry.The blast furnace gas calorific capacity is low, and theoretical temperature combustion is low, and combustion stability is bad, and coke-stove gas belongs to middle calorific value gas, and burning velocity is fast.How more effective blast furnace gas and the coke-stove gas of utilizing become the problem that currency must be studied.
Summary of the invention
The purpose of this utility model is to provide a kind of utilize blast furnace gas, coke-stove gas and coal mixed combustion, produces the boiler that steam is used for novel blast furnace gas, coke-stove gas and the coal mixed combustion of steam supply, generating.
Realize above-mentioned purpose, the utility model adopts following technical scheme, a kind of blast furnace gas, the boiler of coke-stove gas and coal mixed combustion, comprise steelframe, burner hearth, fire grate, horizontal flue, slag tap and ash discharge equipment, back-end ductwork and air preheater, burner hearth is installed on the steelframe, fire grate is arranged on the below of burner hearth, the top that is positioned at fire grate on the burner hearth leading flank is provided with face arch and front Secondary Air, the top that is positioned at fire grate on the trailing flank of burner hearth is provided with rear Secondary Air, described burner hearth be positioned at face arch on be furnished with water-cooling screen, behind the described burner hearth horizontal flue is set, back-end ductwork and air preheater, it is characterized in that: described burner hearth is positioned at the fire grate top and is provided with burner, the inner ring of this burner is coke-stove gas, the outer ring is blast furnace gas, described fire grate is the reversing traveling-grate stoker, described burner hearth leading flank and be positioned at fire grate top and be provided with mechanical wind-force and throw device for coal.
Further setting of the present utility model is: be provided with ash tube on the downside of described horizontal flue, described back-end ductwork below is provided with the fly-ash reburning device, and the setting of fly-ash reburning device is aimed in the outlet of ash tube; Be provided with groove separator between described back-end ductwork and the fly-ash reburning device, be disposed with low temperature superheater and high temperature superheater in the described horizontal flue, arranged self-control condensed water direct-contact desuperheater between described low temperature superheater and the high temperature superheater.
The utility model adopts such scheme to reach following beneficial effect:
1, according to these three kinds of fuel of blast furnace gas, coke-stove gas and coal characteristic separately, the mode that this boiler adopts reversing traveling-grate stoker, mechanical wind-force throwing coal equipment and blast furnace gas, coke oven gas burner to combine is organized burning, coal is evenly shed the burning of the enterprising line stabilization of grate surface by mechanical wind-force coal thrower, blast furnace gas, coke-stove gas then enter hearth combustion by burner, form the combustion system that grate firing combines with the chamber combustion, thereby improved the efficiency of combustion of boiler.
2, Secondary Air before the face arch tip placement, burner hearth lower rear cloth postpone Secondary Air can be strengthened the disturbance of flue gas, causes flue-gas swirl, prolong smoke flow process, and the needed oxygen of aftercombustion.
3, arrange some water-cooling screens in the burner hearth, in the situation that boiler capacity is certain, thereby can greatly increase the height that radiation heating-surface reduces boiler, save material, reduce cost of investment.
4. superheater is arranged vertically in horizontal flue, has arranged respectively low temperature and high temperature two-stage superheater along the flow of flue gas direction.Between the two-stage superheater, arranged self-control condensed water direct-contact desuperheater, to regulate the outlet temperature of superheated steam.When water quality does not have when up to standard, feedwater can not spray into steam as desuperheating water, adopts this moment self-control condensed water direct-contact desuperheater just more to need.
5, adopt the fly-ash reburning device, by the cinder of sedimentation in the horizontal flue after the flying dust that the groove separator of ash tube and economizer lower disposed is collected compiles, be blown into back of furnace row with blower fan and strile-back, thereby greatly reduced unburned carbon loss, improve boiler combustion efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of the burner among Fig. 1;
Fig. 3 is the structural representation of the burner among Fig. 2.
The specific embodiment
Such as Fig. 1-shown in Figure 3: 1 is drum, and 2 is burner hearth, and 3 is steelframe, 4 is blast furnace gas, coke oven gas burner, 5 is economizer, and 6 is that mechanical wind-force is thrown coal equipment, and 7 is water-cooling screen, 8 are the reversing traveling-grate stoker, 9 for slagging tap and ash discharge equipment, and 10 is back-end ductwork, and 11 is air preheater, 12 is horizontal flue, 13 is low temperature superheater, and 14 is high temperature superheater, and 15 is face arch, 16 is front Secondary Air, 17 is ash tube, and 18 is groove profile segregator, and 19 is the fly-ash reburning device, 20 is rear Secondary Air, and 21 are self-control condensed water direct-contact desuperheater.
As shown in Figure 1, a kind of blast furnace gas, the boiler of coke-stove gas and coal mixed combustion, comprise steelframe 3, burner hearth 2, fire grate 8, horizontal flue 12, slag tap and ash discharge equipment 9, back-end ductwork 10 and air preheater 11, burner hearth 2 is installed on the steelframe 3, fire grate 8 is arranged on the below of burner hearth 2, the top that is positioned at fire grate 8 on burner hearth 2 leading flanks is provided with face arch 15 and front Secondary Air 16, the top that is positioned at fire grate 8 on the trailing flank of burner hearth 2 is provided with rear Secondary Air 20, be conducive to coal and enter burner hearth 2 be heated rear moisture rapidly evaporation and vaporization, fuel is caught fire in time, burning, in addition, Secondary Air 16 before face arch 15 tip placement, burner hearth 2 lower rear cloth postpone Secondary Airs 20, can strengthen the disturbance of flue gas, cause flue-gas swirl, prolong smoke flow process, and the needed oxygen of aftercombustion.Described burner hearth 2 be positioned at face arch 15 on be furnished with water-cooling screen 7, water-cooling screen 7 can increase the radiation heating-surface of burner hearth 2 greatly, horizontal flue 12, back-end ductwork 10 and air preheater 11 are set behind the described burner hearth 2, in the utility model embodiment, described burner hearth 2 is positioned at fire grate 8 tops and is provided with burner 4, the inner ring 41 of this burner 4 is coke-stove gas, outer ring 42 is blast furnace gas, described fire grate 8 is reversing traveling-grate stoker 8, described burner hearth 2 leading flanks and be positioned at fire grate 8 tops and be provided with mechanical wind-force and throw device for coal 6.
In the utility model embodiment, be provided with ash tube 17 on the downside of described horizontal flue 12, described back-end ductwork 10 belows are provided with fly-ash reburning device 19, the outlet of ash tube 17 is aimed at fly-ash reburning device 19 and is arranged, purpose be the cinder of horizontal flue 12 interior sedimentations after the flying dust that ash tube 17 and groove separator 18 are collected compiles, blowed by blower fan again and spray into fire grate 8 rear portions and strile-back; Be provided with groove separator 18 between described back-end ductwork 10 and the fly-ash reburning device 19, be disposed with low temperature superheater 13 and high temperature superheater 14 in the described horizontal flue 12, arranged self-control condensed water direct-contact desuperheater 21 between described low temperature superheater 13 and the high temperature superheater 14.In the present embodiment, described burner 4 is single flow, the equal independent air distribution outlet 43,44 of blast furnace gas, coke-stove gas wherein, the intermediate arrangement of burner 4 peep hole 45.
Claims (4)
1. blast furnace gas, the boiler of coke-stove gas and coal mixed combustion, comprise steelframe, burner hearth, fire grate, horizontal flue, slag tap and ash discharge equipment, back-end ductwork and air preheater, burner hearth is installed on the steelframe, fire grate is arranged on the below of burner hearth, the top that is positioned at fire grate on the burner hearth leading flank is provided with face arch and front Secondary Air, the top that is positioned at fire grate on the trailing flank of burner hearth is provided with rear Secondary Air, described burner hearth be positioned at face arch on be furnished with water-cooling screen, behind the described burner hearth horizontal flue is set, back-end ductwork and air preheater, it is characterized in that: described burner hearth is positioned at the fire grate top and is provided with burner, the inner ring of this burner is coke-stove gas, the outer ring is blast furnace gas, described fire grate is the reversing traveling-grate stoker, described burner hearth leading flank and be positioned at fire grate top and be provided with mechanical wind-force and throw device for coal.
2. the boiler of blast furnace gas as claimed in claim 1, coke-stove gas and coal mixed combustion, it is characterized in that: be provided with ash tube on the downside of described horizontal flue, described back-end ductwork below is provided with the fly-ash reburning device, and ash tube is connected with the fly-ash reburning device.
3. the boiler of blast furnace gas as claimed in claim 2, coke-stove gas and coal mixed combustion, it is characterized in that: be provided with groove separator between described back-end ductwork and the fly-ash reburning device, be disposed with low temperature superheater and high temperature superheater in the described horizontal flue, arranged self-control condensed water direct-contact desuperheater between described low temperature superheater and the high temperature superheater.
4. the boiler of blast furnace gas as claimed in claim 1 or 2, coke-stove gas and coal mixed combustion, it is characterized in that: described burner is single flow, the equal independent air distribution outlet of blast furnace gas, coke-stove gas wherein, the intermediate arrangement of burner peep hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220564551.7U CN202835319U (en) | 2012-10-30 | 2012-10-30 | Boiler for mixing combustion of blast-furnace gas and coke oven gas and coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220564551.7U CN202835319U (en) | 2012-10-30 | 2012-10-30 | Boiler for mixing combustion of blast-furnace gas and coke oven gas and coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202835319U true CN202835319U (en) | 2013-03-27 |
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ID=47947013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220564551.7U Expired - Lifetime CN202835319U (en) | 2012-10-30 | 2012-10-30 | Boiler for mixing combustion of blast-furnace gas and coke oven gas and coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202835319U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471103A (en) * | 2013-09-12 | 2013-12-25 | 伟明环保设备有限公司 | Furnace for combined combustion of methane of garbage leachate and garbage |
| CN104033877A (en) * | 2014-06-26 | 2014-09-10 | 济钢集团有限公司 | Multi-gas mixed combustion boiler and combustion method |
-
2012
- 2012-10-30 CN CN201220564551.7U patent/CN202835319U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471103A (en) * | 2013-09-12 | 2013-12-25 | 伟明环保设备有限公司 | Furnace for combined combustion of methane of garbage leachate and garbage |
| CN103471103B (en) * | 2013-09-12 | 2015-11-25 | 伟明环保设备有限公司 | A kind of biogas of percolate and the boiler of rubbish mixed combustion |
| CN104033877A (en) * | 2014-06-26 | 2014-09-10 | 济钢集团有限公司 | Multi-gas mixed combustion boiler and combustion method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |