CN102788341A - Arrangement structure of heating face of blast furnace gas boiler - Google Patents
Arrangement structure of heating face of blast furnace gas boiler Download PDFInfo
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- CN102788341A CN102788341A CN2012102740355A CN201210274035A CN102788341A CN 102788341 A CN102788341 A CN 102788341A CN 2012102740355 A CN2012102740355 A CN 2012102740355A CN 201210274035 A CN201210274035 A CN 201210274035A CN 102788341 A CN102788341 A CN 102788341A
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- blast furnace
- furnace gas
- gas boiler
- arrangement structure
- combustion chamber
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Abstract
The invention provides an arrangement structure of a heating face of a blast furnace gas boiler. Steam parameters are ensured while the boiler is ensured to be started and stopped frequently. The arrangement structure of the heating face of the blast furnace gas boiler comprises a hearth, and is characterized in that a slag condensing pipe is arranged at an outlet of the hearth; a high temperature superheater and a middle temperature superheater are sequentially arranged on a horizontal flue part behind the slag condensing pipe; a low temperature superheater, a coal saver and an air preheater are sequentially arranged on a silo flue on the tail part from top to bottom; and the lower part of the hearth is an insulating combustion chamber, and blast furnace gas combustors are horizontally arranged on walls on both sides of the insulating combustion chamber.
Description
Technical field
The present invention relates to the technical field of blast furnace gas boiler, be specially the 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 in the process of Iron and Steel Production, produces can be used as a kind of available energy and is used for efficient power generation and steam supply.
Blast furnace gas (BFG) is the byproduct that produces in the ironmaking processes; Cube blast furnace gas surplus one ton of pig iron of every production will produce 2000; 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, great amount of heat need absorb by back-end surfaces; But in order to control the boiling rate of economizer exit; Can not arrange too much economizer area again, 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
To the problems referred to above, the invention provides the arrangement of blast furnace gas boiler heating surface, it guarantees steam parameter when guaranteeing that boiler can frequent start-stop.
The 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 said burner hearth is furnished with the crust block pipe; Horizontal flue part after the said crust block pipe is furnished with high temperature superheater, medium temperature overheater in order; Tail vertical well gas flue is furnished with low temperature superheater, economizer, air preheater from top to bottom in order; The bottom of said burner hearth is an insulated combustion chamber, and the blast furnace gas burner horizontal arrangement is on the both walls of said insulated combustion chamber.
After adopting structure of the present invention; In order to ensure steam parameter, superheater system of the present invention only is made up of high temperature, middle gentle low temperature convection superheater three parts, has avoided the high-temperature region in burner hearth to arrange screen formula radiation superheater; Make great amount of heat to absorb 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 a front view structural representation of the present invention.
The specific embodiment
See Fig. 1; It comprises burner hearth 1; The exit of burner hearth 1 is furnished with crust block pipe 2, and the horizontal flue part after the crust block pipe 2 is furnished with high temperature superheater 3, medium temperature overheater 4 in order, and tail vertical well gas flue is furnished with low temperature superheater 5, economizer 6, air preheater 7 from top to bottom in order; The bottom of burner hearth 1 is an insulated combustion chamber 8, and blast furnace gas burner 9 horizontal arrangement are on the both walls of insulated combustion chamber 8.
Claims (1)
1. the arrangement of blast furnace gas boiler heating surface; It comprises burner hearth, it is characterized in that: the exit of said burner hearth is furnished with the crust block pipe; Horizontal flue part after the said crust block pipe is furnished with high temperature superheater, medium temperature overheater in order; Tail vertical well gas flue is furnished with low temperature superheater, economizer, air preheater from top to bottom in order, and the bottom of said burner hearth is an insulated combustion chamber, and the blast furnace gas burner horizontal arrangement is on the both walls of said insulated combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102740355A CN102788341A (en) | 2012-08-03 | 2012-08-03 | Arrangement structure of heating face of blast furnace gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102740355A CN102788341A (en) | 2012-08-03 | 2012-08-03 | Arrangement structure of heating face of blast furnace gas boiler |
Publications (1)
| Publication Number | Publication Date |
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| CN102788341A true CN102788341A (en) | 2012-11-21 |
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Family Applications (1)
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| CN2012102740355A Pending CN102788341A (en) | 2012-08-03 | 2012-08-03 | Arrangement structure of heating face of blast furnace gas boiler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225798A (en) * | 2013-04-09 | 2013-07-31 | 无锡华光锅炉股份有限公司 | High heating value gas boiler |
| CN103335299A (en) * | 2013-04-10 | 2013-10-02 | 无锡华光锅炉股份有限公司 | Superheater layout structure of blast-furnace gas boiler |
| CN103438418A (en) * | 2013-08-08 | 2013-12-11 | 华能国际电力股份有限公司 | Double-reverse-U-shaped boiler |
| CN107327861A (en) * | 2017-07-17 | 2017-11-07 | 无锡华光锅炉股份有限公司 | Coal-powder boiler horizontal flue accumulatingdust arrangement |
| CN107843131A (en) * | 2017-11-02 | 2018-03-27 | 北京科技大学 | High-temperature dust-containing flue gas exhaust heat recovering method and device with molten dirt self-cleaning function |
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| CN201246733Y (en) * | 2008-07-18 | 2009-05-27 | 北京国电龙源杭锅蓝琨能源工程技术有限公司 | Angle pipe type biomass direct combustion boiler |
| CN201310896Y (en) * | 2008-11-20 | 2009-09-16 | 北京国电龙源杭锅蓝琨能源工程技术有限公司 | Biomass incinerator of high temperature and high pressure circulating fluidized bed |
| CN201628205U (en) * | 2010-03-03 | 2010-11-10 | 自贡东联锅炉有限公司 | Vertical gas-fired boiler |
| CN201706467U (en) * | 2010-06-23 | 2011-01-12 | 伟明环保设备有限公司 | Biomass fuel boiler |
| WO2012065356A1 (en) * | 2010-11-18 | 2012-05-24 | 上海锅炉厂有限公司 | Layout structure for superheaters of all stages in circulating fluidized bed boiler |
| CN202791951U (en) * | 2012-08-03 | 2013-03-13 | 无锡华光锅炉股份有限公司 | Arrangement structure of blast furnace gas boiler heating surface |
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2012
- 2012-08-03 CN CN2012102740355A patent/CN102788341A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201246733Y (en) * | 2008-07-18 | 2009-05-27 | 北京国电龙源杭锅蓝琨能源工程技术有限公司 | Angle pipe type biomass direct combustion boiler |
| CN201310896Y (en) * | 2008-11-20 | 2009-09-16 | 北京国电龙源杭锅蓝琨能源工程技术有限公司 | Biomass incinerator of high temperature and high pressure circulating fluidized bed |
| CN201628205U (en) * | 2010-03-03 | 2010-11-10 | 自贡东联锅炉有限公司 | Vertical gas-fired boiler |
| CN201706467U (en) * | 2010-06-23 | 2011-01-12 | 伟明环保设备有限公司 | Biomass fuel boiler |
| WO2012065356A1 (en) * | 2010-11-18 | 2012-05-24 | 上海锅炉厂有限公司 | Layout structure for superheaters of all stages in circulating fluidized bed boiler |
| CN202791951U (en) * | 2012-08-03 | 2013-03-13 | 无锡华光锅炉股份有限公司 | Arrangement structure of blast furnace gas boiler heating surface |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225798A (en) * | 2013-04-09 | 2013-07-31 | 无锡华光锅炉股份有限公司 | High heating value gas boiler |
| CN103335299A (en) * | 2013-04-10 | 2013-10-02 | 无锡华光锅炉股份有限公司 | Superheater layout structure of blast-furnace gas boiler |
| CN103438418A (en) * | 2013-08-08 | 2013-12-11 | 华能国际电力股份有限公司 | Double-reverse-U-shaped boiler |
| CN107327861A (en) * | 2017-07-17 | 2017-11-07 | 无锡华光锅炉股份有限公司 | Coal-powder boiler horizontal flue accumulatingdust arrangement |
| CN107843131A (en) * | 2017-11-02 | 2018-03-27 | 北京科技大学 | High-temperature dust-containing flue gas exhaust heat recovering method and device with molten dirt self-cleaning function |
| CN107843131B (en) * | 2017-11-02 | 2019-08-06 | 北京科技大学 | High-temperature dust-containing flue gas exhaust heat recovering method and device with molten dirt self-cleaning function |
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Application publication date: 20121121 |