CN102330995B - Composite arch structure in biomass fuel chain boiler - Google Patents
Composite arch structure in biomass fuel chain boiler Download PDFInfo
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- CN102330995B CN102330995B CN 201110297714 CN201110297714A CN102330995B CN 102330995 B CN102330995 B CN 102330995B CN 201110297714 CN201110297714 CN 201110297714 CN 201110297714 A CN201110297714 A CN 201110297714A CN 102330995 B CN102330995 B CN 102330995B
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- arch
- boiler
- chimney arch
- biomass fuel
- burner hearth
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Abstract
The invention discloses a composite arch structure in a biomass fuel chain boiler. In the structure, the front wall of a boiler hearth is provided with a parabolic front arch which protrudes towards the interior of the hearth; the lower end of an oblique arch which is obliquely arranged is connected to the bottom part of the rear wall of the hearth; the upper end of the oblique arch is connected with a horizontal section of an L-shaped arch; the L-shaped arch and the oblique arch together form a rear arch of the boiler; the parabolic front arch, the upper vertical part of the L-shaped arch and side walls on the two sides of the hearth form a combustion chamber of the boiler; and the oblique arch and the side walls on the two sides of the hearth form a burn-out chamber of the boiler. The structure has the advantages that: a large amount of volatile matters can be quickly separated from a biomass fuel under the radiant heating action of the parabolic front arch; and further, high-temperature and high-efficiency combustion of volatile components in the combustion chamber is promoted. The structure is suitable for the biomass fuel chain boiler.
Description
Technical field
The present invention relates to the chain-grate boiler field, be specifically related to use the furnace arch structure in the chain-grate boiler of biomass fuel.
Background technology
The biomass solid forming granular fuel (be called for short: combustion mechanism biomass fuel) is as follows: the one, and temperature on fire is low, burning is fast, has reduced the nitrogen oxide that high-temp combustion produces; The 2nd, the biomass fuel fugitive constituent is high, is about 3 times of coal, and the fugitive constituent in the granular fuel (cigarette) once separating out completing combustion, can be realized smokeless combustion at low-temperature condition; The 3rd, in the static combustion process, dust discharge amount is extremely low; The 4th, the biomass fuel sulfur-bearing is low, less than 1/10 of fire coal, need not to adopt the solid sulphur desulfurization of additive, meets environmental requirement; The 5th, behind the biomass combustion, in particle, form micropore, be beneficial to air and enter inner combustion-supportingly, efficiency of combustion is high, and the lime-ash remaining carbon is extremely low.At present, biomass fuel is mainly used in various domestic heating ovens, small size hot-water boiler, hot-blast stove etc.Traditional combustion coal chain boiler, be provided with skewed rear chimney arch in its burner hearth, be provided with an air distribution structure that is consisted of by primary air fan and air compartment in its chain fire-gate bottom, this furnace arch structure can not adapted biomass fuel high-volatile, the fast combustion characteristics of burnout velocity, it is insufficient to cause burning, make the chimney over-emitting black exhaust, drip tar, be difficult to satisfy the requirement of environmental protection.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of can adapted biomass combined furnace arch structure in the biomass fuel chain boiler of fuel combustion characteristics.
For addressing the above problem, the present invention has adopted following technical scheme.
Combined furnace arch structure in the described biomass fuel chain boiler, comprise: chimney arch before the antetheca of boiler furnace is provided with the parabolic shape projecting inward to burner hearth, the lower end of the inclination chimney arch that is obliquely installed is connected to the bottom position of burner hearth rear wall, the upper end of inclination chimney arch is connected with the horizontal segment of " L " shape chimney arch, and " L " shape chimney arch and inclination chimney arch form the rear chimney arch of boiler jointly; The side wall on the upper vertical of chimney arch and " L " shape chimney arch part and burner hearth both sides consists of the combustion chamber of boiler before the parabolic shape, and the side wall on inclination chimney arch and burner hearth both sides consists of the secondary furnace of boiler.
Further, combined furnace arch structure in the aforesaid biomass fuel chain boiler, wherein: be provided with cool air hose above the traveling-grate stoker porch of chain-grate boiler, the air outlet of cool air hose is downward-sloping and become 45～60 degree angles with the traveling-grate stoker face along the fire grate feed direction.
The invention has the beneficial effects as follows: the front chimney arch of parabolic shape and the rear chimney arch that is comprised of " L " shape chimney arch and inclination chimney arch consist of the combined furnace arch of boiler jointly, wherein, the radiation heating interaction energy of chimney arch makes biomass fuel separate out rapidly a large amount of volatile matters before the parabolic shape, has further promoted the high temperature efficient burning of fugitive constituent in the combustion chamber.
Description of drawings
Fig. 1 is the structural representation of the combined furnace arch structure in the biomass fuel chain boiler of the present invention.
Fig. 2 is the amplification assumption diagram of A part among Fig. 1.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1 and Figure 2, combined furnace arch structure in the described biomass fuel chain boiler, comprise: chimney arch 4 before the antetheca of boiler furnace 33 is provided with the parabolic shape projecting inward to burner hearth, the lower end of the inclination chimney arch 51 that is obliquely installed is connected to the bottom position of burner hearth rear wall, the upper end of inclination chimney arch 51 is connected with the horizontal segment of " L " shape chimney arch 5, " L " shape chimney arch 5 and the inclination chimney arch 51 common rear chimney arch that form boiler; The side wall on the upper vertical of chimney arch 4 and " L " shape chimney arch 5 part and burner hearth 33 both sides consists of the combustion chamber of boiler before the parabolic shape, and the side wall on inclination chimney arch 51 and burner hearth 33 both sides consists of the secondary furnace of boiler.In the present embodiment, be provided with cool air hose 3 above the porch of the traveling-grate stoker 7 of chain-grate boiler, the air outlet 31 of cool air hose 3 is downward-sloping and become 45～60 degree angles with the traveling-grate stoker face along the fire grate feed direction.In actual use, cool air hose 3 can be connected with the primary air fan in the chain-grate boiler, provides wind regime by the primary air fan of boiler.
During chain-grate boiler work, biomass fuel is entered on the traveling-grate stoker 7 by the feed hopper 1 of boiler, be fed forward by traveling-grate stoker 7, the cold air that the primary air fan of boiler is carried enters into the both sides air compartment of traveling-grate stoker 7 bottoms, provide a required wind of burning for the biomass fuel on the traveling-grate stoker 7, make biomass fuel acutely burning on traveling-grate stoker 7; Cold air also enters into cool air hose 3 by the air compartment of these both sides simultaneously, the air outlet 31 of cool air hose 3 will successively be sent cold wind, form the cold wind curtain wall that tilts to blow to together the traveling-grate stoker face, a small amount of fugitive constituent that biomass fuel is separated out is blown into before the parabolic shape in the combustion chamber behind the chimney arch 4, blocks simultaneously fugitive constituent and enters boiler feed bucket 1.Along with moving up into the combustion chamber stage before the biomass fuel, separate out a large amount of fugitive constituents under the radiation effects of biomass fuel chimney arch 4 before parabolic shape, further promote biomass fuel to finish the gasification clean burning.Along with the continuous reach of traveling-grate stoker 7, the fixed carbon that biomass fuel combustion forms moves to secondary furnace, burns away until complete after-flame.In actual use, can also high temperature secondary airduct 6 be set in the burner hearth inner combustion chamber, high temperature inclination secondary air channel 8 is set in secondary furnace, form the secondary air distribution structure in the burner hearth, further help the high performance clean burning of biomass fuel.
The invention has the beneficial effects as follows: the front chimney arch of parabolic shape and the rear chimney arch that is comprised of " L " shape chimney arch and inclination chimney arch consist of the combined furnace arch of boiler jointly, wherein, the radiation heating interaction energy of chimney arch makes biomass fuel separate out rapidly a large amount of volatile matters before the parabolic shape, has further promoted the high temperature efficient burning of fugitive constituent in the combustion chamber.
Claims (2)
1. the combined furnace arch structure in the biomass fuel chain boiler, it is characterized in that: chimney arch before the antetheca of boiler furnace is provided with the parabolic shape projecting inward to burner hearth, the lower end of the inclination chimney arch that is obliquely installed is connected to the bottom position of burner hearth rear wall, the upper end of inclination chimney arch is connected with the horizontal segment of " L " shape chimney arch, and " L " shape chimney arch and inclination chimney arch form the rear chimney arch of boiler jointly; The side wall on the upper vertical of chimney arch and " L " shape chimney arch part and burner hearth both sides consists of the combustion chamber of boiler before the parabolic shape, and the side wall on inclination chimney arch and burner hearth both sides consists of the secondary furnace of boiler.
2. the combined furnace arch structure in the biomass fuel chain boiler according to claim 1, it is characterized in that: be provided with cool air hose above the traveling-grate stoker porch of chain-grate boiler, the air outlet of cool air hose is downward-sloping and become 45～60 degree angles with the traveling-grate stoker face along the fire grate feed direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110297714 CN102330995B (en) | 2011-10-08 | 2011-10-08 | Composite arch structure in biomass fuel chain boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110297714 CN102330995B (en) | 2011-10-08 | 2011-10-08 | Composite arch structure in biomass fuel chain boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102330995A CN102330995A (en) | 2012-01-25 |
| CN102330995B true CN102330995B (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110297714 Expired - Fee Related CN102330995B (en) | 2011-10-08 | 2011-10-08 | Composite arch structure in biomass fuel chain boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104359112B (en) * | 2014-11-28 | 2016-08-17 | 合肥工业大学 | A kind of high-temperature incinerator burning cover air curtain protection system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB239206A (en) * | 1924-08-29 | 1927-01-25 | Elie Joseph Vermeyen | Improvements in furnaces |
| CN2272527Y (en) * | 1996-04-15 | 1998-01-14 | 刘雪华 | Multi-fuction uniformly layered combustion device |
| CN2733248Y (en) * | 2004-06-21 | 2005-10-12 | 大连锅炉厂 | Novel hot-water boiler |
| CN201731479U (en) * | 2010-03-20 | 2011-02-02 | 王震坤 | Biomass fuels enhanced combustion boiler |
| CN201852128U (en) * | 2010-11-19 | 2011-06-01 | 郑州中鼎锅炉股份有限公司 | Multi-purpose biomass boiler |
| CN202303436U (en) * | 2011-10-08 | 2012-07-04 | 张家港市威孚热能科技有限公司 | Combined furnace arch structure in biomass fuel chain boiler |
-
2011
- 2011-10-08 CN CN 201110297714 patent/CN102330995B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB239206A (en) * | 1924-08-29 | 1927-01-25 | Elie Joseph Vermeyen | Improvements in furnaces |
| CN2272527Y (en) * | 1996-04-15 | 1998-01-14 | 刘雪华 | Multi-fuction uniformly layered combustion device |
| CN2733248Y (en) * | 2004-06-21 | 2005-10-12 | 大连锅炉厂 | Novel hot-water boiler |
| CN201731479U (en) * | 2010-03-20 | 2011-02-02 | 王震坤 | Biomass fuels enhanced combustion boiler |
| CN201852128U (en) * | 2010-11-19 | 2011-06-01 | 郑州中鼎锅炉股份有限公司 | Multi-purpose biomass boiler |
| CN202303436U (en) * | 2011-10-08 | 2012-07-04 | 张家港市威孚热能科技有限公司 | Combined furnace arch structure in biomass fuel chain boiler |
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| CN102330995A (en) | 2012-01-25 |
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Owner name: ZHANGJIAGANG WILFORD THERMAL CO., LTD. Free format text: FORMER NAME: ZHANGJIAGANG WILFORD THERMAL TECHNOLOGY CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: No. 5 Zhangjiagang Street South Road Wilford thermal Limited by Share Ltd yangshe Tang Suzhou City, Jiangsu province 215600 city of Zhangjiagang City Patentee after: ZHANGJIAGANG WILFORD THERMAL TECHNOLOGY CO., LTD. Address before: Cang yangshe village of Suzhou city in Jiangsu Province Based on 215600 Zhangjiagang city 9 group Zhangjiagang wilfor Thermal Technology Co. Ltd. Patentee before: Zhangjiagang Weifu Heat Energy Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20181008 |