CN201448818U - Biomass solid fuel steam boiler - Google Patents

Biomass solid fuel steam boiler Download PDF

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Publication number
CN201448818U
CN201448818U CN2009200401745U CN200920040174U CN201448818U CN 201448818 U CN201448818 U CN 201448818U CN 2009200401745 U CN2009200401745 U CN 2009200401745U CN 200920040174 U CN200920040174 U CN 200920040174U CN 201448818 U CN201448818 U CN 201448818U
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CN
China
Prior art keywords
boiler
solid fuel
biomass solid
fuel steam
steam boiler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009200401745U
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Chinese (zh)
Inventor
张宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhangjiagang Jiangnan Boiler & Pressure Vessel Co Ltd
Original Assignee
Zhangjiagang Jiangnan Boiler & Pressure Vessel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhangjiagang Jiangnan Boiler & Pressure Vessel Co Ltd filed Critical Zhangjiagang Jiangnan Boiler & Pressure Vessel Co Ltd
Priority to CN2009200401745U priority Critical patent/CN201448818U/en
Application granted granted Critical
Publication of CN201448818U publication Critical patent/CN201448818U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a biomass solid fuel steam boiler, which has the advantages that the feeding is convenient, the fuel distribution is even and the combustion is stable and full. The biomass solid fuel steam boiler comprises a hearth base and a boiler body arranged on the hearth base. A combustion chamber is arranged in the boiler body. A smoke outlet communicated with the combustion chamber is arranged at the middle part of the boiler body. A micro-flow fixed boiler bed is arranged on the hearth base and is formed by a plurality of grates which are radially and evenly distributed and are inclined from the center to the surrounding. An electric screw feeding device is arranged in the hearth base and the micro-flow fixed boiler bed in a penetrating way. The utility model can fully adapt to the characteristics of the biomass fuel that the volatile matter is high, the carbon activity is high, the calorific value is low and the ash is low.

Description

The biomass solid fuel steam boiler
Technical field
The utility model relates to steam boiler, refers more particularly to the biomass solid fuel steam boiler.
Background technology
The content of sulphur and nitrogen is all lower in the biomass solid forming particle, and the ash share is also very little, is a kind of low-carbon (LC) fuel of cleaning.The SO that produces behind the biomass solid forming particle burning 2, NOx and dust discharge capacity more much smaller than fossil fuel, and, owing to do not produce the CO of non-ecological circulation behind the biomass solid forming particle burning 2, special meaning is arranged for alleviating serious day by day " greenhouse effects ".Therefore, biomass fuel more and more comes into one's own as a kind of reproducible eco-friendly power source, but, the existing small-sized biomass boiler of China is to adopt traditional fixed grate structure, the manual material combustion system that adds of upper feeding type basically, and this type of furnace can not adapted biomass fuel fugitive constituent height, carbon activity height, calorific value is low, ash is low characteristics, mainly is reflected in the following aspects: the feed difficulty, fuel distribution is inhomogeneous, combustion instability, insufficient, over-emitting black exhaust, boiler thermal output is low.
The utility model content
Technical problem to be solved in the utility model is: a kind of feed convenience, relatively more even, the more stable sufficient biomass solid fuel steam boiler of burning of fuel distribution are provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the biomass solid fuel steam boiler, comprise: burner hearth base and the boiler body that is arranged on the burner hearth base, be provided with the combustion chamber in the boiler body, the middle part of boiler body is provided with the mouth that communicates with the combustion chamber; Described burner hearth base is provided with by some fixedly siege of microfluidic that the fire grate that radially evenly distributes, tilt around the middle mind-set constitutes, and burner hearth base and microfluidic fixedly are equipped with the electric screw charging gear in the siege.
Be provided with interior heat-exchanging tube bundle, formation radiation and the convection heating surface of ring-type in described combustion chamber, the two ends of every interior heat exchanger tube in the interior heat-exchanging tube bundle all communicate with the inner chamber of boiler body; In the arranged outside of the boiler body heat recovery chamber that has a surplus, described mouth communicates with the waste heat recovery chamber, the waste heat recovery chamber is provided with exhaust opening, be provided with outer heat-exchanging tube bundle, the formation convection heating surface of two-layer ring-type in the waste heat recovery chamber, the two ends of every outer heat exchanger tube in the two-layer outer heat-exchanging tube bundle all communicate with the inner chamber of boiler body.
The concrete structure of described electric screw charging gear comprises: the pusher passage of the level that is interconnected and vertical tapping channel, be provided with in the pusher passage by motor-driven screw feeder, the end of pusher passage is provided with the feed hopper that communicates with the pusher passage.
Further technical problem to be solved in the utility model is: provide a kind of fuel distribution more evenly, burning stablizes sufficient biomass solid fuel steam boiler more.
For solving above-mentioned further technical problem, the technical solution adopted in the utility model is: the top of the discharging opening of described tapping channel is provided with spacing top cap.
Be provided with overfire air port between the discharging opening of described tapping channel and the spacing top cap.
The beneficial effects of the utility model are: the utility model provides a kind of steam boiler that is suitable for biomass solid fuel, the electric screw charging gear that is positioned at the bottom makes feed very convenient, the fire grate that tilts around the middle mind-set makes that fuel distribution is relatively more even, burning is more stable abundant. in addition, the spacing top cap and the overfire air port that are arranged on the discharging opening top make that fuel distribution is even more, burning is fully stable more, and efficiency of combustion can reach more than 95% usually; And the flue gas of discharging is also clean more.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the broken section structural representation of the A-A direction among Fig. 1.
Among Fig. 1 to Fig. 2: 1, boiler body, 2, interior heat exchanger tube, 3, the outer heat exchanger tube of internal layer, 4, outer outer heat exchanger tube, 5, the waste heat recovery chamber, 6, mouth, 7, combustion chamber, 8, the burner hearth base, 9, the fixing siege of microfluidic, 10, spacing top cap, 11, overfire air port, 12, motor, 13, pusher passage, 14, screw feeder, 15, tapping channel, 16, feed hopper, 17, chimney.
The specific embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
As shown in Figure 1, biomass solid fuel steam boiler described in the utility model, comprise: burner hearth base 8 and the boiler body 1 that is arranged on the burner hearth base, be provided with combustion chamber 7 in the boiler body 1, the middle part of boiler body 1 is provided with the mouth 6 that communicates with combustion chamber 7, in described combustion chamber 7, be provided with the ring-type that many interior heat exchanger tubes 2 constitute interior heat-exchanging tube bundle, form radiation and convection heating surface---referring to shown in Figure 2, the two ends of every interior heat exchanger tube 2 all communicate with the inner chamber of boiler body 1; In the arranged outside of boiler body 1 heat recovery chamber 5 that has a surplus, described mouth 6 communicates with waste heat recovery chamber 5, be provided with the outer heat-exchanging tube bundle of inside and outside two-layer ring-type in the waste heat recovery chamber 5---referring to shown in Figure 2, this inside and outside two-layer outer heat-exchanging tube bundle constitutes, forms convection heating surface by outer heat exchanger tube 3 of many internal layers and the outer heat exchanger tube 4 of Duo Gen skin respectively, the two ends of outer heat exchanger tube 3 of all internal layers and outer outer heat exchanger tube 4 all communicate with the inner chamber of boiler body 1, and waste heat recovery chamber 5 is provided with the exhaust opening that links to each other with chimney 17---referring to shown in Figure 2; Described burner hearth base 8 is provided with by 6~8 fixedly siege 9 of microfluidic that the fire grate that radially evenly distributes, tilt around the middle mind-set constitutes, burner hearth base 8 and microfluidic fixedly are equipped with the electric screw charging gear in the siege 9, its structure comprises: the pusher passage 13 of the level that is interconnected and vertical tapping channel 15, be provided with the screw feeder 14 that is driven by motor 12 in the pusher passage 13, the end of pusher passage 13 is provided with the feed hopper 16 that communicates with pusher passage 13; The top of the discharging opening of described tapping channel 15 is provided with spacing top cap 10, is provided with overfire air port 11 between the discharging opening of tapping channel 15 and the spacing top cap 10.
Operation principle of the present utility model is: under the promotion of the screw feeder 14 of biomass solid formed fuel in having the electric screw charging gear of continuous autofeed function, upwards feed on the microfluidic fixed bed 9 and burn, the top of microfluidic fixed bed 9 also is provided with spacing top cap 10, spacing top cap 10 guarantees that the burning bed of material is under designing requirement thickness, the feed force transformation that the electric screw charging gear is made progress is the motive force of the horizontal fine motion of the bed of material, cooperate the microfluidic fixed bed 9 that low dip is arranged around the mind-set therefrom, make the biomass solid forming particle even automatically from the center material inlet, continuously on the microfluidic fixed bed 9 to around form microfluidic, the fuel particle that flows can reduce the parcel of ashes and be distributed on the microfluidic fixed bed 9, promotes the abundant burning of coke; Cap 10 belows, spacing top also are furnished with overfire air port 11, make the fuel fugitive constituent overflow the back from biological particles and in time mix with combustion air, fully burning; Gas fume after burning flow through radiation and convection heating surface in combustion chamber 7, the combustion chamber 7, and the mouth 6 (being commonly called as trunnion) on 7 tops, combustion chamber, enter the convection heating surface in the waste heat recovery chamber 5 after, enter atmosphere through chimney 17.

Claims (5)

1. biomass solid fuel steam boiler comprises: burner hearth base and be arranged on boiler body on the burner hearth base, be provided with the combustion chamber in the boiler body, and the middle part of boiler body is provided with the mouth that communicates with the combustion chamber; It is characterized in that: described burner hearth base is provided with by some fixedly siege of microfluidic that the fire grate that radially evenly distributes, tilt around the middle mind-set constitutes, and burner hearth base and microfluidic fixedly are equipped with the electric screw charging gear in the siege.
2. biomass solid fuel steam boiler as claimed in claim 1, it is characterized in that: be provided with interior heat-exchanging tube bundle, formation radiation and the convection heating surface of ring-type in described combustion chamber, the two ends of every interior heat exchanger tube in the interior heat-exchanging tube bundle all communicate with the inner chamber of boiler body; In the arranged outside of the boiler body heat recovery chamber that has a surplus, described mouth communicates with the waste heat recovery chamber, the waste heat recovery chamber is provided with exhaust opening, be provided with outer heat-exchanging tube bundle, the formation convection heating surface of two-layer ring-type in the waste heat recovery chamber, the two ends of every outer heat exchanger tube in the two-layer outer heat-exchanging tube bundle all communicate with the inner chamber of boiler body.
3. biomass solid fuel steam boiler as claimed in claim 1 or 2, it is characterized in that: the concrete structure of described electric screw charging gear comprises: the pusher passage of the level that is interconnected and vertical tapping channel, be provided with in the pusher passage by motor-driven screw feeder, the end of pusher passage is provided with the feed hopper that communicates with the pusher passage.
4. biomass solid fuel steam boiler as claimed in claim 3 is characterized in that: the top of the discharging opening of described tapping channel is provided with spacing top cap.
5. biomass solid fuel steam boiler as claimed in claim 4 is characterized in that: be provided with overfire air port between the discharging opening of described tapping channel and the spacing top cap.
CN2009200401745U 2009-04-13 2009-04-13 Biomass solid fuel steam boiler Expired - Fee Related CN201448818U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200401745U CN201448818U (en) 2009-04-13 2009-04-13 Biomass solid fuel steam boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200401745U CN201448818U (en) 2009-04-13 2009-04-13 Biomass solid fuel steam boiler

Publications (1)

Publication Number Publication Date
CN201448818U true CN201448818U (en) 2010-05-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200401745U Expired - Fee Related CN201448818U (en) 2009-04-13 2009-04-13 Biomass solid fuel steam boiler

Country Status (1)

Country Link
CN (1) CN201448818U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101893226A (en) * 2010-07-27 2010-11-24 广州迪森热能技术股份有限公司 Biomass steam generator
CN102425776A (en) * 2011-11-07 2012-04-25 始兴县富溢锅炉制造有限公司 Steam boiler with biomass particles as fuel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101893226A (en) * 2010-07-27 2010-11-24 广州迪森热能技术股份有限公司 Biomass steam generator
CN101893226B (en) * 2010-07-27 2013-04-17 广州迪森热能技术股份有限公司 Biomass steam generator
CN102425776A (en) * 2011-11-07 2012-04-25 始兴县富溢锅炉制造有限公司 Steam boiler with biomass particles as fuel

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C14 Grant of patent or utility model
GR01 Patent grant
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: 20100505

Termination date: 20160413