CN202791951U - Arrangement structure of blast furnace gas boiler heating surface - Google Patents
Arrangement structure of blast furnace gas boiler heating surface Download PDFInfo
- Publication number
- CN202791951U CN202791951U CN 201220382011 CN201220382011U CN202791951U CN 202791951 U CN202791951 U CN 202791951U CN 201220382011 CN201220382011 CN 201220382011 CN 201220382011 U CN201220382011 U CN 201220382011U CN 202791951 U CN202791951 U CN 202791951U
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- blast furnace
- furnace gas
- heating surface
- gas boiler
- boiler heating
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Abstract
The utility model provides an arrangement structure of a blast furnace gas boiler heating surface. The arrangement structure of the blast furnace gas boiler heating surface guarantees frequent starting and stopping of a boiler and steam parameters simultaneously. The arrangement structure of the blast furnace gas boiler heating surface comprises a furnace chamber, and is characterized in that a slag-coagulating pipe is arranged at an outlet position of the furnace chamber, a horizontal flue part after slag-coagulating pipe is sequentially provided with a high-temperature overheater and a middle-temperature overheater, a tail silo flue is sequentially provided with a low-temperature overheater, an economizer and an air pre-heater from top to bottom, the lower portion of the furnace chamber is a heat insulation combustion chamber, and blast furnace gas burners are horizontally arranged at two side walls of the heat insulation combustion chamber.
Description
Technical field
The utility model relates to the technical field of blast furnace gas boiler, is specially a kind of arrangement of blast furnace gas boiler heating surface.
Background technology
The electricity needs of height and the energy cost that constantly rises become a huge challenge of present steel industry, and the waste gas that produces in the process of iron and steel production can be used as a kind of available energy and is used for efficiency power generation and steam supply.
Blast furnace gas (BFG) is the byproduct that produces in the ironmaking processes, one ton of pig iron of every production will produce more than 2000 cubes of blast furnace gases, its Lower heat value extremely low (LHV 2931KJ/Nm3), its composition can be divided into combustible constituent (carbon monoxide and hydrogen) and inert region (carbon dioxide and nitrogen).Because the blast furnace gas calorific capacity is extremely low, a little less than the Fire Radiation ability, radiation heat absorption capacity wretched insufficiency in the burner hearth of blast furnace gas boiler, a large amount of caloric requirements absorb by back-end surfaces, but in order to control the boiling rate of economizer exit, can not arrange again too much economizer area, so existing blast furnace gas boiler burner hearth high-temperature region all is furnished with screen formula radiation superheater, but radiation heat absorption capacity wretched insufficiency in the burner hearth of blast furnace gas boiler, the layout of screen formula radiation superheater can't satisfy the requirement of user's needs high parameter steam; And since high-pressure boiler drum thickness of slab, the convection current evaporating heating surface expand tube difficulty of screen formula radiation superheater, and this structure is unfavorable for the frequent start-stop of boiler.
Summary of the invention
For the problems referred to above, the utility model provides a kind of arrangement of blast furnace gas boiler heating surface, and it guarantees steam parameter when guaranteeing that boiler can frequent start-stop.
A kind of arrangement of blast furnace gas boiler heating surface, its technical scheme is such: it comprises burner hearth, it is characterized in that: the exit of described burner hearth is furnished with the crust block pipe, horizontal flue part after the described crust block pipe is furnished with high temperature superheater, medium temperature overheater in turn, tail vertical well gas flue is furnished with low temperature superheater, economizer, air preheater from top to bottom in turn, the bottom of described burner hearth is insulated combustion chamber, and blast furnace gas burner is horizontally disposed on the both walls of described insulated combustion chamber.
After adopting structure of the present utility model, in order to ensure steam parameter, superheater system of the present utility model only is comprised of high temperature, middle gentle low temperature convection superheater three parts, avoided the high-temperature region in burner hearth to arrange screen formula radiation superheater, so that a large amount of caloric requirements absorbs by back-end surfaces, can effectively guarantee steam parameter, owing to do not re-use screen formula radiation superheater, the frequent start-stop of boiler is unaffected simultaneously; To sum up, it guarantees steam parameter when guaranteeing that boiler can frequent start-stop.
Description of drawings
Fig. 1 is front view structural representation of the present utility model.
The specific embodiment
See Fig. 1, it comprises burner hearth 1, the exit of burner hearth 1 is furnished with crust block pipe 2, horizontal flue part after the crust block pipe 2 is furnished with high temperature superheater 3, medium temperature overheater 4 in turn, tail vertical well gas flue is furnished with low temperature superheater 5, economizer 6, air preheater 7 from top to bottom in turn, the bottom of burner hearth 1 is insulated combustion chamber 8, and blast furnace gas burner 9 is horizontally disposed on the both walls of insulated combustion chamber 8.
Claims (1)
1. the arrangement of a blast furnace gas boiler heating surface, it comprises burner hearth, it is characterized in that: the exit of described burner hearth is furnished with the crust block pipe, horizontal flue part after the described crust block pipe is furnished with high temperature superheater, medium temperature overheater in turn, tail vertical well gas flue is furnished with low temperature superheater, economizer, air preheater from top to bottom in turn, the bottom of described burner hearth is insulated combustion chamber, and blast furnace gas burner is horizontally disposed on the both walls of described insulated combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382011 CN202791951U (en) | 2012-08-03 | 2012-08-03 | Arrangement structure of blast furnace gas boiler heating surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382011 CN202791951U (en) | 2012-08-03 | 2012-08-03 | Arrangement structure of blast furnace gas boiler heating surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202791951U true CN202791951U (en) | 2013-03-13 |
Family
ID=47819207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220382011 Expired - Lifetime CN202791951U (en) | 2012-08-03 | 2012-08-03 | Arrangement structure of blast furnace gas boiler heating surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202791951U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788341A (en) * | 2012-08-03 | 2012-11-21 | 无锡华光锅炉股份有限公司 | Arrangement structure of heating face of blast furnace gas boiler |
-
2012
- 2012-08-03 CN CN 201220382011 patent/CN202791951U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788341A (en) * | 2012-08-03 | 2012-11-21 | 无锡华光锅炉股份有限公司 | Arrangement structure of heating face of blast furnace gas boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co.,Ltd. Address before: 214028 No. 3 Chengnan Road, New District, Jiangsu, Wuxi Patentee before: WUXI HUAGUANG BOILER Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |