CN102748769A - Biomass fuel vertical rotating bin feeding process with preheating system - Google Patents
Biomass fuel vertical rotating bin feeding process with preheating system Download PDFInfo
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- CN102748769A CN102748769A CN2012101315160A CN201210131516A CN102748769A CN 102748769 A CN102748769 A CN 102748769A CN 2012101315160 A CN2012101315160 A CN 2012101315160A CN 201210131516 A CN201210131516 A CN 201210131516A CN 102748769 A CN102748769 A CN 102748769A
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Abstract
The invention relates to a biomass fuel vertical rotating bin feeding process with a preheating system. The air is heated by a composite phase-change heat exchanger, boiler-fed biomass fuel is dried in a preheating type biomass fuel rotating bin by using the hot air, the rotating bin can mix the fuel and the hot air sufficiently, and the hot air can dry most external moisture in the biomass fuel so as to enable the external moisture of the boiler-fed biomass fuel to be controlled at about 20%. After the boiler-fed fuel is dried, boiler combustion efficiency is improved. The dried boiler-fed biomass fuel is fed in a boiler to be burned, latent heat of vaporization taken away by steam generated by combustion of the biomass fuel in the boiler can be reduced, heat loss because of smoke exhaust of the boiler can be further reduced, and biomass boiler heat efficiency is improved.
Description
Technical field
The present invention relates to the air heat drying and go into the stove biomass fuel, can reduce moisture content, reduction boiler exhaust gas heat loss, the raising biomass boiler thermal efficiency into the stove biomass fuel.
Background technology:
Biomass power generation is the new industry that integrates energy-saving and environmental protection, service agriculture, rural areas and farmers.The development of this industry is to improving atmospheric environment, improve resource utilization, optimize energy resource structure, realizing that the sustainability of the human energy has positive facilitation.It is extremely important to go into stove biomass fuel moisture Control, reaches 45% when above at the moisture content of going into the stove biomass fuel, and its low heat valve only has about 1500-1800kcal/kg.The moisture content of biomass fuel is high more, and its actual value is just low more, because living beings moisture is excessive; The actual exhaust gas volumn that produces in the stove internal combustion increases; So not only can increase the load of air-introduced machine, increase station service power consumption rate, and this part moisture also can absorb furnace heat after going into stove; Change the steam about 150-170 ℃ into, when discharging great amount of heat is taken away with flue gas.The invention of this project can realize UTILIZATION OF VESIDUAL HEAT IN, reduces the fume emission heat-energy losses, invests lowly, and height produces effects.
Summary of the invention:
The present invention provides and utilizes composite phase-change heat exchange air preheater to add hot-air, again hot-air is transported to the integrated apparatus of going into the stove biomass fuel with dryings such as oven dry and reprocessing facility in the pre-heated living beings merry-go-round type bunker with organizing again.
Band pre-heating system biomass fuel vertical rotating feed bin; Feed bin top is provided with material inlet and exhaust apparatus; The bottom adopts the fuel after spiral will be dried to be delivered to the boiler internal combustion, and exhaust adopts air-introduced machine negative pressure exhausting to drain into atmosphere to the steam that volatilizes in the biomass fuel drying course.Be with pre-heated biomass fuel merry-go-round type bunker can be divided into two kinds: a kind of is that the centre is the exhaust passage, is the band pre-heating system biomass fuel vertical rotating feed bin of hot-air channel around the circle wall; Another kind is a hot-air channel in the middle of being, is the band pre-heating system biomass fuel vertical rotating feed bin of exhaust passage around the circle wall.
Description of drawings:
Accompanying drawing is process chart of the present invention and is with pre-heated living beings merry-go-round type bunker sketch map.Wherein,
Fig. 1 is the process chart of the biomass fuel vertical rotating feed bin feed technology of band pre-heating system;
Fig. 2 is the exhaust passage in the middle of being, is the band pre-heating system biomass fuel vertical rotating feed bin sketch map of hot-air channel around the circle wall;
In the middle of Fig. 3 is hot-air channel, is the band pre-heating system biomass fuel vertical rotating feed bin sketch map of exhaust passage around the circle wall.
The specific embodiment:
Boiler back end ductwork in biomass power generation enterprise is installed complex phase-change heat exchanger and external air preheater; Be delivered to the pre-heated biomass fuel merry-go-round type bunker of biomass boiler band inner drying after air is heated, dried biomass fuel burns directly into stove through helical conveyer system.
Dried biomass fuel unit calorific value raises; Get into boiler combustion, the actual flue gas volume reducing of generation has reduced the boiler exhaust gas heat loss; Improve boiler efficiency, can slacken flying dust to boiler heating surface is bondd after the steam volume reducing in the flue gas simultaneously.
Claims (4)
- It is a kind ofly to go into the stove biomass fuel by the air heat drying, can reduce moisture content into the stove biomass fuel, reduces the boiler exhaust gas heat loss, improve the incorporate device of the biomass boiler thermal efficiency.Claim is following:1. it comprises composite phase-change air heat exchanger device, adjusting device, is with pre-heated living beings merry-go-round type bunker device, air retracting device, exhaust apparatus etc.It is characterized in that demineralized water is heated to 60-70 ℃ with air themperature after the heat absorption of boiler back end ductwork phase transformation section; Heated hot-air is sent into and is with pre-heated merry-go-round type bunker and goes into stove fuel and fully mix; Make biomass fuel be able to drying going into the stokehold; Dried fuel gets into the burner hearth burning, and the moisture and the air mixture of separating out after the biomass fuel drying enter atmosphere through exhaust apparatus.
- 2. be with the structural manufacturing process of the biomass fuel vertical rotating feed bin of pre-heating system.
- 3. biomass boiler utilizes composite phase-change heat exchange air preheater to add the hot-air technology is gone into stove fuel in the biomass fuel merry-go-round type bunker inner drying living beings of band preheating technological process.
- 4. the present invention is applicable to the boiler (grate firing type, fluid bed, floated) of biomass burning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101315160A CN102748769A (en) | 2012-04-18 | 2012-04-18 | Biomass fuel vertical rotating bin feeding process with preheating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101315160A CN102748769A (en) | 2012-04-18 | 2012-04-18 | Biomass fuel vertical rotating bin feeding process with preheating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748769A true CN102748769A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101315160A Pending CN102748769A (en) | 2012-04-18 | 2012-04-18 | Biomass fuel vertical rotating bin feeding process with preheating system |
Country Status (1)
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| CN (1) | CN102748769A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925316A (en) * | 2016-07-07 | 2016-09-07 | 广州薪光合环保技术有限公司 | Control method of fluidized bed gasifier system |
| CN106247375A (en) * | 2016-08-30 | 2016-12-21 | 江苏太湖锅炉股份有限公司 | Single drum longitudinal biomass direct-fired chain-grate boiler system |
| CN107062287A (en) * | 2017-05-15 | 2017-08-18 | 江苏龙净科杰催化剂再生有限公司 | The residual heat using device of gas fired-boiler flue gas |
| CN114704848A (en) * | 2022-03-28 | 2022-07-05 | 西安热工研究院有限公司 | Coupling power generation system for drying biomass fuel by using low-temperature waste heat of thermal power generating unit |
-
2012
- 2012-04-18 CN CN2012101315160A patent/CN102748769A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925316A (en) * | 2016-07-07 | 2016-09-07 | 广州薪光合环保技术有限公司 | Control method of fluidized bed gasifier system |
| CN106247375A (en) * | 2016-08-30 | 2016-12-21 | 江苏太湖锅炉股份有限公司 | Single drum longitudinal biomass direct-fired chain-grate boiler system |
| CN107062287A (en) * | 2017-05-15 | 2017-08-18 | 江苏龙净科杰催化剂再生有限公司 | The residual heat using device of gas fired-boiler flue gas |
| CN114704848A (en) * | 2022-03-28 | 2022-07-05 | 西安热工研究院有限公司 | Coupling power generation system for drying biomass fuel by using low-temperature waste heat of thermal power generating unit |
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Application publication date: 20121024 |
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| RJ01 | Rejection of invention patent application after publication |