CN104819462A - Biomass boiler and application method thereof - Google Patents
Biomass boiler and application method thereof Download PDFInfo
- Publication number
- CN104819462A CN104819462A CN201510238201.XA CN201510238201A CN104819462A CN 104819462 A CN104819462 A CN 104819462A CN 201510238201 A CN201510238201 A CN 201510238201A CN 104819462 A CN104819462 A CN 104819462A
- Authority
- CN
- China
- Prior art keywords
- air
- boiler
- primary air
- flue
- biomass
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/28—Control devices specially adapted for fluidised bed, combustion apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention relates to a biomass boiler. The biomass boiler comprises a hearth, an air chamber, a flue, a separator and a primary air adjusting system, wherein the air chamber is connected to an air inlet of the hearth, and a smoke outlet of the hearth is connected with the flue by virtue of the separator; the primary air adjusting system comprises a primary fan, a primary air main pipe, a primary air bypass pipe and a primary air preheater, the primary fan is connected with the air chamber by virtue of the primary air main pipe and the primary air bypass pipe, the primary air preheater is serially connected to the primary air main pipe, and the primary air preheater is arranged in an outlet of the flue; the primary air bypass pipe is provided with a control mechanism for controlling the connection and disconnection of the primary air bypass pipe; an energy economizer which is arranged outside the primary air preheater is also arranged in the outlet of the flue. According to an adjustable system of the biomass boiler, the smoke discharging temperature of the boiler is controlled by adjusting the water supply amount of the energy economizer, the burning temperature of the hearth is controlled by adjusting the temperature of the primary air, the smoke discharging temperature of the boiler is reduced, and the safe and continuous operation period of the circulating fluidized bed biomass boiler can be prolonged.
Description
Technical field
The present invention relates to field of boilers, is especially a kind of biomass boiler and using method thereof.
Background technology
Recirculating fluidized bed straw boiler has the plurality of advantages such as efficiency of combustion is high, fuel type wide adaptability, pollutant emission index are good.Therefore, recirculating fluidized bed straw boiler was rapidly developed in recent years, but China's living beings have abundant species, the features such as distribution dispersion, it is unstable that biomass electric power plant generally faces biomass fuel supply in actual motion, the biomass fuel that general biomass boiler runs for 1 year is kind more than 30 nearly, as straw, wheat straw, corn stalk, cotton stalk, bark branch, tree root, wood chip, rice husk etc., its fuel value scope 1500 ~ 3000kcal/kg, moisture scope is 15 ~ 50%, and calorific value 2000 ~ 2500kcal/ kg of the design fuel of boiler at that time, moisture scope is 20 ~ 30%.After boiler design fuel is determined, time as larger in natural fuel and design fuel deviation, boiler can produce following problem in running: 1. when burn high moisture content, low calorie fuels time, cause exhaust gas temperature higher, affect boiler efficiency, scaling loss sack cleaner time serious.2., when burning low moisture content, exotic fuels, easily cause the coking of boiler furnace and revert system, slagging scorification.
Summary of the invention
The object of the invention is to solve the problem, and provides a kind of biomass boiler and using method thereof, is specifically realized by following technical scheme:
A kind of biomass boiler, comprise burner hearth, air compartment, flue, separator and First air regulating system, described air compartment is connected to the air inlet of burner hearth, and the exhanst gas outlet of burner hearth is connected with described flue via separator; Described First air regulating system comprises primary air fan, First air supervisor, the other pipe of First air and First air air preheater, described primary air fan is connected with described air compartment via First air supervisor, the other pipe of First air respectively, described First air air preheater be serially connected with described First air be responsible in and this First air air preheater is positioned at the outlet of described flue; The controlling organization controlling its break-make is provided with in the other pipe of described First air; Described flue outlet place is also provided with the energy-saving appliance be positioned at outside First air air preheater.
Described biomass boiler, it designs further and is, described controlling organization comprises the flowmeter, manual air door and the MOD that are serially connected in successively in the other pipe of First air.
Described biomass boiler, its further design be, the other pipe of described First air be responsible for described First air in the ratio of cross section draught area be 3:7.
Described biomass boiler, its further design be, the one-level of boiler is low to be added water outlet and is connected with the water inlet of check-valves with described energy-saving appliance by electric control valve successively, and the delivery port of described energy-saving appliance passes through another electric control valve and is connected with an oxygen-eliminating device import.
Described biomass boiler, it designs further and is, is respectively arranged with the temperature measuring unit for measuring tempeature in described burner hearth, flue.
Described biomass boiler, it designs further and is, described separator is connected with described lower furnace portion via a material returning device.
The using method of biomass boiler as above, specifically comprises the steps:
1), measure calorific value and the moisture of biomass fuel to be combusted, form the measurement result comprising above-mentioned two numerical value;
2), the thermal value range of the design fuel of above-mentioned measurement result and boiler, moisture scope are compared and above-mentioned biomass fuel is dropped into boiler and burn; If the moisture of biomass fuel lower than the moisture content scope of boiler design fuel, calorific value higher than boiler design fuel value scope time, open described manual air door, and the air capacity entering burner hearth from the other pipe of First air is regulated by described MOD, make burner hearth be in the design temperature of not easily coking, slagging scorification; Measure the temperature of flue outlet smoke evacuation, adjustment enters the water yield of energy-saving appliance thus makes the temperature of chimney meatus transmitting smoke be no more than the normal working temperature of the corresponding smoke duster of boiler.
Biomass boiler adjustable system provided by the invention controls exhaust gas temperature by the confluent of energy-saving adjusting device and regulates First air temperature control combustion temperature in hearth, substantially increase the fuel tolerance of boiler, reduce the exhaust gas temperature of boiler, improve the economic benefit of power plant, and the cycle extending recirculating fluidized bed biomass boiler safety, run continuously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is energy-saving appliance corresponding water regulating system structural representation;
Fig. 3 is First air regulating system structural representation.
Detailed description of the invention
Below in conjunction with Figure of description and embodiment, the present invention is further described.
As shown in Figure 1, this biomass boiler comprises burner hearth 2, air compartment 1, flue 6, separator 3 and First air regulating system 4, and air compartment 1 is connected to the air inlet of burner hearth 2, and the exhanst gas outlet of burner hearth 2 is connected with flue 9 via separator 3; First air regulating system comprises primary air fan 41, First air supervisor 42, the other pipe 43 of First air and First air air preheater 44, primary air fan 41 is connected with air compartment 1 via First air supervisor 42, the other pipe 43 of First air respectively, First air air preheater 44 be serially connected with First air be responsible in and this First air air preheater is positioned at the outlet of flue 6; The controlling organization 5 controlling its break-make is provided with in the other pipe of First air; Flue outlet place is also provided with the energy-saving appliance 7 be positioned at outside First air air preheater.Separator 3 is connected with burner hearth 2 bottom via a material returning device 5.
As shown in Figure 3, controlling organization comprises the flowmeter 51, manual air door 52 and the MOD 53 that are serially connected in successively in the other pipe of First air.In order to ensure 30% of the air feed in design maximum air quantity station of the other pipe of First air, the other pipe of the present embodiment First air be responsible for First air in the ratio of cross section draught area be 3:7.
As shown in Figure 2, the one-level of boiler is low to be added water outlet 71 and is connected with the water inlet of check-valves 73 with energy-saving appliance 7 by electric control valve 72 successively, and the delivery port of energy-saving appliance 7 is connected with oxygen-eliminating device 8 import by another electric control valve 72.
For the ease of immediately controlling MOD and electric control valve, in burner hearth, flue, be respectively arranged with the temperature measuring unit (not shown in FIG.) for measuring tempeature.
The using method of biomass boiler as above, comprises the steps:
1), measure calorific value and the moisture of biomass fuel to be combusted, form the measurement result comprising above-mentioned two numerical value, concrete numerical value: thermal value range 1500 ~ 3000kcal/kg, moisture scope is 15 ~ 50%;
2), above-mentioned measurement result is compared and above-mentioned biomass fuel is dropped into boiler burn with thermal value range 2000 ~ 2500kcal/ kg of the design fuel of boiler, moisture scope 20 ~ 30% respectively; The moisture of biomass fuel lower than the moisture content scope of boiler design fuel, calorific value higher than boiler design fuel value scope time, open manual air door, and the air capacity entering burner hearth from the other pipe of First air is regulated by MOD, make burner hearth be in the design temperature of not easily coking, slagging scorification; Measure the temperature of flue outlet smoke evacuation, adjustment enters the water yield of energy-saving appliance thus makes the temperature of chimney meatus transmitting smoke be no more than the normal working temperature of the corresponding smoke duster of boiler.
Biomass boiler adjustable system provided by the invention controls exhaust gas temperature by the confluent of energy-saving adjusting device and regulates First air temperature control combustion temperature in hearth, substantially increase the fuel tolerance of boiler, reduce the exhaust gas temperature of boiler, improve the economic benefit of power plant, and the cycle extending recirculating fluidized bed biomass boiler safety, run continuously.
Claims (7)
1. a biomass boiler, it is characterized in that comprising burner hearth, air compartment, flue, separator and First air regulating system, described air compartment is connected to the air inlet of burner hearth, and the exhanst gas outlet of burner hearth is connected with described flue via separator; Described First air regulating system comprises primary air fan, First air supervisor, the other pipe of First air and First air air preheater, described primary air fan is connected with described air compartment via First air supervisor, the other pipe of First air respectively, described First air air preheater be serially connected with described First air be responsible in and this First air air preheater is positioned at the outlet of described flue; The controlling organization controlling its break-make is provided with in the other pipe of described First air; Described flue outlet place is also provided with the energy-saving appliance be positioned at outside First air air preheater.
2. biomass boiler according to claim 1, is characterized in that, described controlling organization comprises the flowmeter, manual air door and the MOD that are serially connected in successively in the other pipe of First air.
3. biomass boiler according to claim 2, is characterized in that, the other pipe of described First air be responsible for described First air in the ratio of cross section draught area be 3:7.
4. biomass boiler according to claim 3, it is characterized in that, the one-level of boiler is low to be added water outlet and is connected with the water inlet of check-valves with described energy-saving appliance by electric control valve successively, and the delivery port of described energy-saving appliance is connected with an oxygen-eliminating device import by another electric control valve.
5. biomass boiler according to claim 4, is characterized in that, is respectively arranged with the temperature measuring unit for measuring tempeature in described burner hearth, flue.
6. biomass boiler according to claim 1, is characterized in that, described separator is connected with described lower furnace portion via a material returning device.
7. a using method for biomass boiler as claimed in claim 2, is characterized in that comprising the steps:
1), measure calorific value and the moisture of biomass fuel to be combusted, form the measurement result comprising above-mentioned two numerical value;
2), the thermal value range of the design fuel of above-mentioned measurement result and boiler, moisture scope are compared and above-mentioned biomass fuel is dropped into boiler and burn; If the moisture of biomass fuel lower than the moisture content scope of boiler design fuel, calorific value higher than boiler design fuel value scope time, open described manual air door, and the air capacity entering burner hearth from the other pipe of First air is regulated by described MOD, make burner hearth be in the design temperature of not easily coking, slagging scorification; Measure the temperature of flue outlet smoke evacuation, adjustment enters the water yield of energy-saving appliance thus makes the temperature of chimney meatus transmitting smoke be no more than the normal working temperature of the corresponding smoke duster of boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510238201.XA CN104819462A (en) | 2015-05-12 | 2015-05-12 | Biomass boiler and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510238201.XA CN104819462A (en) | 2015-05-12 | 2015-05-12 | Biomass boiler and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104819462A true CN104819462A (en) | 2015-08-05 |
Family
ID=53729843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510238201.XA Pending CN104819462A (en) | 2015-05-12 | 2015-05-12 | Biomass boiler and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104819462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958989A (en) * | 2019-04-03 | 2019-07-02 | 李剑 | A kind of boiler evaporating device for steam power plant |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200940836Y (en) * | 2006-08-14 | 2007-08-29 | 中冶京诚工程技术有限公司 | Pulse control device for burner |
| JP2013050231A (en) * | 2011-08-30 | 2013-03-14 | Miura Co Ltd | Combustion apparatus |
| CN103644564A (en) * | 2013-11-26 | 2014-03-19 | 中国华能集团清洁能源技术研究院有限公司 | Temperature-adjustable and resistance-adjustable fluidized wind system of circulating fluidized bed boiler |
| CN203829911U (en) * | 2014-05-15 | 2014-09-17 | 北京洛卡环保技术有限公司 | SNCR (selective non-catalytic reduction) denitration system of circulating fluidized bed boiler |
| CN204693394U (en) * | 2015-05-12 | 2015-10-07 | 理昂新能源股份有限公司 | A kind of biomass boiler |
-
2015
- 2015-05-12 CN CN201510238201.XA patent/CN104819462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200940836Y (en) * | 2006-08-14 | 2007-08-29 | 中冶京诚工程技术有限公司 | Pulse control device for burner |
| JP2013050231A (en) * | 2011-08-30 | 2013-03-14 | Miura Co Ltd | Combustion apparatus |
| CN103644564A (en) * | 2013-11-26 | 2014-03-19 | 中国华能集团清洁能源技术研究院有限公司 | Temperature-adjustable and resistance-adjustable fluidized wind system of circulating fluidized bed boiler |
| CN203829911U (en) * | 2014-05-15 | 2014-09-17 | 北京洛卡环保技术有限公司 | SNCR (selective non-catalytic reduction) denitration system of circulating fluidized bed boiler |
| CN204693394U (en) * | 2015-05-12 | 2015-10-07 | 理昂新能源股份有限公司 | A kind of biomass boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958989A (en) * | 2019-04-03 | 2019-07-02 | 李剑 | A kind of boiler evaporating device for steam power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203810367U (en) | Automatic excess-air-coefficient adjusting system of industrial coal-fired boiler | |
| CN201582846U (en) | Combustion control system of lignite unit | |
| CN201207910Y (en) | Biomass energy direct-combustion gasification tobacco leaf baking device | |
| CN202630128U (en) | Civil biomass half-gasification combustion furnace | |
| CN101446418B (en) | Method for correcting and controlling impacts of water content in fuel on loads of boiler | |
| CN204786359U (en) | Coal fired boiler's dual cycle flue gas system | |
| CN204693394U (en) | A kind of biomass boiler | |
| CN201973708U (en) | High-temperature high-pressure circulating fluidized bed boiler burning biomass straws | |
| CN110030549A (en) | A kind of biological fuel gas mingled burning installation and technique for coal-burning boiler | |
| CN201416901Y (en) | Preheater with adjustable flue air temperatures | |
| CN210638067U (en) | Stable combustion energy-saving efficiency-improving system for boiler of thermal power plant | |
| CN104819462A (en) | Biomass boiler and application method thereof | |
| CN110793040A (en) | Automatic control system for low NOx combustion of flue gas backflow of garbage incinerator | |
| CN107166428B (en) | Layer combustion boiler flue gas oxygen content control system based on flue gas recirculation | |
| CN202546736U (en) | Bagasse pith and pulverized coal fired boiler | |
| CN109339881A (en) | A kind of Combined-cycle Gas Turbine Unit start-up course NO2Emission control systems and method | |
| CN205279074U (en) | Low nitrogen powder combustor of slag -tap formula | |
| CN204730243U (en) | The heating gas system of positive-pressure type biomass powder powder fluidized airflow bed gasification furnace | |
| CN209415434U (en) | A kind of biomass direct-combustion boiler structure of optimization | |
| CN208567111U (en) | Integral biomass is boiler dedicated | |
| CN207279689U (en) | A kind of grate firing boiler flue gas oxygen content control system based on flue gas recirculation | |
| RU92152U1 (en) | HEATING BOILER | |
| CN207963145U (en) | High-efficiency environment friendly tangerine stalk solid biomass gasification fired boiler | |
| CN202630129U (en) | Biomass stove for heating and cooking and heating brick bed for civilians | |
| CN205747482U (en) | Energy-saving environmental protection boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 410205, Hunan Province, Changsha New Development Zone, Lu Song Road, No. 459, Dongfanghong District, Guangdong agricultural building, 14 floor, room 1459 Applicant after: ATB ecological energy Limited by Share Ltd Applicant after: Nantong Wanda Boiler Co., Ltd. Address before: 410205, Hunan Province, Changsha New Development Zone, Lu Song Road, No. 459, Dongfanghong District, Guangdong agricultural building, 14 floor, room 1459 Applicant before: Li Ang new forms of energy limited company Applicant before: Nantong Wanda Boiler Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150805 |