CN101975404A - Method for improving coal-fired boilers into biomass boilers - Google Patents
Method for improving coal-fired boilers into biomass boilers Download PDFInfo
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- CN101975404A CN101975404A CN2010102656784A CN201010265678A CN101975404A CN 101975404 A CN101975404 A CN 101975404A CN 2010102656784 A CN2010102656784 A CN 2010102656784A CN 201010265678 A CN201010265678 A CN 201010265678A CN 101975404 A CN101975404 A CN 101975404A
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- combustion
- coal
- biomass fuel
- boiler
- biomass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention discloses a method for improving coal-fired boilers into biomass boilers, comprising the following steps: 1) connecting a secondary air system for blowing air to the boiler at one side of a furnace body; 2) connecting an ash removing system for removing fly ash generated after combustion of the biomass fuel at the other side of the furnace body; 3) connecting a water cooling coal gate system for cooling the coal gate below the secondary air system of the furnace body; and 4) installing a flue gas waste heat recovery device at the tail of the furnace body for heating the combustion-supporting air entering into the hearth. The secondary air system solves the problem that the volatile matters in the biomass fuel are taken out of the boiler without thorough combustion. The water cooling coal gate system solves the problem that the biomass fuel is rapidly ignited and easily burns the coal gate out. The ash removing system solves the problem that the fly ash generated after combustion of the biomass fuel is taken out of the chimney. The combustion-supporting air preheating system solves the problem that the volatile matters in the biomass fuel can not be thoroughly combusted rapidly in low temperature air environment.
Description
Technical field
The present invention relates to a kind of boiler improvement method, especially a kind of method that coal-fired boiler reform is become biomass boiler.
Background technology
Because existing boiler just is used for coal-fired the use, have the characteristics of high pollution and the defective that wastes energy, boiler also has a lot of deficiencies when fuel is living beings, has the unfavorable shortcoming of fuel selectivity and combustion efficiency, and environmental pollution is serious, the problem that equipment corrosion is serious.In the biomass fuel volatilization do not have completing combustion just taken out of boiler and biomass fuel the igniting burn out the coal flashboard rapidly easily, the flying dust that is produced after the boiler combustion is difficult for removing.
Summary of the invention
The purpose of this invention is to provide and a kind of coal-fired boiler reform is become the method for biomass boiler, undesirable in order to solve traditional coal-fired boiler fuel selectivity and combustion efficiency, and environmental pollution is serious, the problem that equipment corrosion is serious.
The objective of the invention is to be achieved through the following technical solutions:
A kind of coal-fired boiler reform is become the method for biomass boiler, may further comprise the steps:
1) side at body of heater connects the secondary air system that is used for air blast in boiler;
2) described body of heater opposite side connects the dust pelletizing system that is used to remove the flying dust that produces behind the biomass fuel combustion;
3) below the secondary air system of described body of heater, connect the water-cooled coal flashboard system that is used for the cooling of coal supply flashboard;
4) at the afterbody of described body of heater flue gas waste heat recovery apparatus is installed, is used to heat the combustion air that enters burner hearth.
Preferably, in described step 2) also be included in the step that cold water circulation is set in the water-cooled coal flashboard system before.
Preferably, before described step 3), also be included in the step that spray and device for reducing dust are set in the dust pelletizing system.
Beneficial effect of the present invention is, secondary air system has solved that fugitive constituent does not have completing combustion just to be taken out of the problem of boiler in the biomass fuel; Water-cooled coal flashboard has solved the rapid problem that burns out the coal flashboard easily of biomass fuel igniting; Dust pelletizing system has solved the problem that the flying dust that produced behind the biomass fuel combustion is taken out of chimney, and the combustion air pre-heating system has solved biomass fuel fugitive constituent under Cryogenic air environment problem completely of can not burning rapidly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
According to embodiment the present invention is described in further detail below.
As shown in Figure 1, a kind of coal-fired boiler reform is become the method for biomass boiler, may further comprise the steps:
1) side at body of heater 4 connects the secondary air system 2 that is used for air blast in boiler;
2) described body of heater 4 opposite sides connect the dust pelletizing system 3 that is used to remove the flying dust that produces behind the biomass fuel combustion;
3) below the secondary air system of described body of heater 4, connect the water-cooled coal flashboard system 1 that is used for the cooling of coal supply flashboard;
4) at the afterbody of described body of heater 4 flue gas waste heat recovery apparatus is installed, is used to heat the combustion air that enters burner hearth.
A kind of boiler that is used for bio-fuel comprises body of heater 4, and a side of body of heater 4 is connected with the secondary air system 2 that is used for air blast in boiler, and the fugitive constituent of biomass fuel has been depressed in secondary air system 2 air blast in boiler, and it is fully burned.Body of heater 4 also is connected with the water-cooled coal flashboard system 1 that is used for the cooling of coal supply flashboard, and water-cooled coal flashboard system 1 is positioned at the below of secondary air system 2, establishes the cooling of cold water circulation coal supply flashboard in the water-cooled coal flashboard system 1, and it can be out of shape after by high-temperature baking.The body of heater opposite side is connected with the dust pelletizing system 3 that is used to remove the flying dust that produces behind the biomass fuel combustion, establishes spray and device for reducing dust in the dust pelletizing system 3, makes the flying dust behind the biomass fuel combustion can not be brought into chimney, makes no longer over-emitting black exhaust of chimney.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other multi-form variation and changes on the basis of the above description.Here can't give exhaustive to all embodiments.Everyly belong to the row that conspicuous variation that technical scheme of the present invention amplifies out or change still are in protection scope of the present invention.
Claims (3)
1. one kind becomes the method for biomass boiler with coal-fired boiler reform, may further comprise the steps:
1) side at body of heater connects the secondary air system that is used for air blast in boiler;
2) described body of heater opposite side connects the dust pelletizing system that is used to remove the flying dust that produces behind the biomass fuel combustion;
3) below the secondary air system of described body of heater, connect the water-cooled coal flashboard system that is used for the cooling of coal supply flashboard;
4) at the afterbody of described body of heater flue gas waste heat recovery apparatus is installed, is used to heat the combustion air that enters burner hearth.
2. method according to claim 1 is in described step 2) also be included in the step that cold water circulation is set in the water-cooled coal flashboard system before.
3. method according to claim 1 and 2 also was included in the step that spray and device for reducing dust are set in the dust pelletizing system before described step 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102656784A CN101975404A (en) | 2010-08-27 | 2010-08-27 | Method for improving coal-fired boilers into biomass boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102656784A CN101975404A (en) | 2010-08-27 | 2010-08-27 | Method for improving coal-fired boilers into biomass boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101975404A true CN101975404A (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102656784A Pending CN101975404A (en) | 2010-08-27 | 2010-08-27 | Method for improving coal-fired boilers into biomass boilers |
Country Status (1)
| Country | Link |
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| CN (1) | CN101975404A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391860Y (en) * | 2009-03-23 | 2010-01-27 | 任少忠 | Coal burning boiler |
| CN201521947U (en) * | 2009-11-13 | 2010-07-07 | 桂林市国裕节能科技有限公司 | Biomass fuel combustion system reconstructed from industrial coal-fired boiler |
-
2010
- 2010-08-27 CN CN2010102656784A patent/CN101975404A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391860Y (en) * | 2009-03-23 | 2010-01-27 | 任少忠 | Coal burning boiler |
| CN201521947U (en) * | 2009-11-13 | 2010-07-07 | 桂林市国裕节能科技有限公司 | Biomass fuel combustion system reconstructed from industrial coal-fired boiler |
Non-Patent Citations (1)
| Title |
|---|
| 罗城: "锅炉加煤斗的结构改进", 《中华纸业》, no. 200109, 31 October 2001 (2001-10-31), pages 1 - 3 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110216 |