CN205690388U - A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device - Google Patents
A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device Download PDFInfo
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- CN205690388U CN205690388U CN201620567931.4U CN201620567931U CN205690388U CN 205690388 U CN205690388 U CN 205690388U CN 201620567931 U CN201620567931 U CN 201620567931U CN 205690388 U CN205690388 U CN 205690388U
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Abstract
This utility model belongs to high volatile carbon-containing fuel and utilizes technical field, disclose a kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device, this utility model uses hot efflorescence fluid bed furnace to carry out heating and efflorescence by high volatile carbon-containing fuel, produces semicoke powder and the mixture of combustion gas of high temperature.The semicoke powder of high temperature and the mixture of combustion gas enter boiler, by burning completely at burner hearth internal classification air distribution.Ash after burning is discharged through the cleaner unit of afterbody.This utility model achieves high volatile carbon-containing fuel and efficiently utilizes, and solves, by the method for hot efflorescence, the problem that existing high volatile carbon-containing fuel hot powder process cost is high, breaches high volatile carbon-containing fuel and utilize the bottleneck that difficulty is big, improve utilization ratio.
Description
Technical field
This utility model belongs to high volatile carbon-containing fuel and utilizes technical field, is specifically related to a kind of high volatile carbon containing combustion
Expect hot efflorescence high efficient combustion device.
Background technology
High volatile carbon-containing fuel mainly includes biomass and the low-order coal fuel such as brown coal, mud coal.Various high volatiles contain
Carbon fuel all has certain energy.High volatile carbon-containing fuel can be a kind of energy shape that solar energy is stored with chemical energy form
Formula, directly or indirectly derives from the photosynthesis of plant.Tellurian plant carries out the energy that photosynthesis is consumed, and accounts for the sun
Being irradiated to the 0.2% of earth total radiation, this portion of energy is 40 times of current mankind's total energy consumption.
Existing high volatile carbon-containing fuel mainly uses the combustion system of fixed bed and fluid bed, combustion reaction is simplified to
The gas-solid reaction of low rate, efficiency of combustion is low.The most built multiple engineerings, are processed into fuel powdery before combustion, adopt
Efficient burning is carried out by the mode of burner.But high volatile carbon-containing fuel there will be problems in pulverizing process, such as: wave
Send out point easy a precipitation and cause Fire explosion；Moisture causes fuel powder to bond；Biomass fuel intensity or toughness are high, and pulverizing energy consumption is high.
High volatile carbon-containing fuel is when burning, owing to its flame organization need has certain central high temperature district, high volatilization
Point carbon-containing fuel just will become Mars and fly out system once not complete reaction in flame high-temperature region.So the combustion of high volatile carbon containing
The efficiency of material combustor is difficult to be further continued for improving, and easily produces NOx in flame high-temperature region, causes the maximum discharge of NOx, existing height
The NOx discharge of volatile matter carbon-containing fuel combustor is typically larger than 300mg/Nm.High volatile carbon-containing fuel usually contains higher
Moisture, low temp fuel powder is after entering combustion zone, and the moisture precipitation time is longer and moisture separates out and needs big energy, causes
Combustion instability.
Accordingly, it would be desirable to a kind of rational high volatile carbon-containing fuel Land use models improves popularity and the combustion that raw material utilizes
Burn efficiency.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of high volatile carbon-containing fuel heat
Efflorescence high efficient combustion device.
A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device, sets including hot efflorescence fluid bed furnace, boiler, dedusting
Standby and tail gas treatment device, described hot efflorescence fluid bed furnace bottom is provided with dog-house, bottom hot efflorescence fluid bed furnace also and gas
The air outlet of conveying equipment is connected, and hot efflorescence fluid bed furnace upper outlet is connected with boiler inlet, boiler export and cleaner
Entrance connect, the outlet of cleaner is connected with tail gas treatment device.
Further describing as technique scheme:
Dog-house includes raw material feed bin and bed feed bin；
Further describing as technique scheme:
Heating surface, air preheater and economizer it has been sequentially arranged in boiler；
Further describing as technique scheme:
Tail gas treatment device includes air-introduced machine and chimney, and described cleaner is connected with chimney by air-introduced machine；
Further describing as technique scheme:
Dog-house bottom in hot efflorescence fluid bed furnace is provided with the blast cap for being uniformly distributed air and temperature；
Further describing as technique scheme:
Boiler internal classification is disposed with air port.
Principle of the present utility model is:
Biomass in high volatile carbon-containing fuel are mainly made up of lignin, cellulose, hemicellulose, content of lignin
The highest, the mechanical strength of biomass is the highest；The content of cellulose is the highest, and the elasticity of biomass and toughness are the best.And lignin with
Cellulose all forms with C, H, O for essential element, its at high temperature macromole molecular scission, primarily forms biomass half
Burnt, combustion gas (CO, CO2、H2、C2H4、H2O etc.).Biomass semicoke is that loose and porous structure, mechanical strength and toughness are far below biology
Matter itself.Low-order coal in high volatile carbon-containing fuel usually contains relatively high-moisture, at high temperature moisture and Volatile, shape
Become loose porous semicoke.
Hot efflorescence fluid bed furnace adds high volatile carbon-containing fuel, is formed in bottom under the air effect that bottom is passed through
Weak oxide region, the oxygen molecule in air is distributed on high volatile carbon-containing fuel surface and reacts with C=C, C=H key, at the beginning of fuel
Step efflorescence, and under the effect of high temperature, generate semicoke and combustion gas.Bed in fluid bed, under gas push effect, is carried out at a high speed
Motion, by loose semi-coke powder chemical conversion fine powder.Hot efflorescence fluid bed furnace bottom bed speed is higher, beneficially semicoke efflorescence；On
Portion's air velocity is relatively low, and the semicoke fine powder of smaller particle size can escape, and the semicoke of bigger granularity returns heat under gravity
Efflorescence is continued in efflorescence fluid bed furnace bottom.
Owing to semi-coke powder and fuel gas temperature are higher, having exceeded thermodynamics firing temperature, burning mixed with air is empty
Between burn, and unconventional torch burning mode, substantially increase efficiency of combustion.In boiler combustion indoor high-temperature semi-coke powder and combustion
Gas can fully stepped mixing burn with air, not only ensure that the burning completely of high-temperature semi-coke powder and combustion gas, and uniform
Temperature field, it is suppressed that the generation of NOx, simultaneously by arranging that heating surface controls the temperature of combustor, it is ensured that ignition temperature is less than
High volatile carbon-containing fuel ash melt temperature.
The beneficial effects of the utility model are:
(1) greatly reduce the cost of high volatile carbonaceous fuel feedstock efflorescence, utilize high-temperature oxydation to change high volatile
The chemistry of carbon-containing fuel and physical property, recycle the high speed impact pulverised fuel of bed in hot efflorescence fluid bed furnace, significantly drop
Energy required for low efflorescence；
(2) expand high volatile carbon-containing fuel and utilize scope, high volatile carbon-containing fuel calorific value ＞ 1200Kcal/kg,
Granularity ＜ 20cm；
(3) improve high volatile carbon-containing fuel utilization ratio, high volatile carbon-containing fuel efficiency of combustion ＞ 99%, and
Reduce NOx emission to ＜ 100mg/Nm.
Accompanying drawing explanation
Fig. 1 is the signal of a kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device in this utility model embodiment
Figure.
Wherein have: 1, hot efflorescence fluid bed furnace；101, raw material feed bin；102, bed feed bin；103, aerator；104, wind
Cap；2, boiler；201, heating surface；202, air preheater；203, economizer；204, air port；3, cleaner unit；4, air inducing
Machine；5, chimney.
Detailed description of the invention
See Fig. 1, a kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device, including hot efflorescence fluid bed furnace 1, under
Portion is provided with raw material feed bin 101, bed feed bin 102, and the bottom in hot efflorescence fluid bed furnace 1 is provided with for homogeneous air distribution with equal
The blast cap 104 in even temperature field, is connected with aerator 103 bottom hot efflorescence fluid bed furnace 1, hot efflorescence fluid bed furnace 1 top and pot
Stove 2 is connected, and boiler 2 is provided with the heating surface 201 for controlling boiler combustion indoor temperature, is provided with air preheater 202 and saves coal
Device 203, also hierarchical arrangement have air port 204, boiler 2 outlet to be connected with cleaner unit 3 entrance, and cleaner unit 3 exports connection to be had and draw
Blower fan 4, air-introduced machine 4 exports connection chimney 5.
A kind of high volatile carbon-containing fuel hot efflorescence efficient burning method, uses a kind of hot efflorescence of high volatile carbon-containing fuel
High efficient combustion device produces, and comprises the following steps:
(1) raw material, bed add in hot efflorescence fluid bed furnace 1 by raw material feed bin 101, bed feed bin 102, aerator
Air is sent into by 103, and by blast cap 104 even distributing wind.The hot efflorescence fluid bed furnace 1 bottom speed of service is 1-5m/s, top
Speed of service 0.2-3.5m/s.Hot efflorescence fluid bed furnace 1 running temperature 400-1200 DEG C.Under the effect of high temperature and bed, high
Volatile matter carbonaceous fuel feedstock is pulverized into≤the semicoke fine powder of 2mm, and produce combustion gas.
(2) the high-temperature semi-coke fine powder produced and the mixture of combustion gas enter boiler 2 and burn with preheated air stepped mixing, combustion
Burning the ash removing dust device 3 produced to collect, tail gas is discharged through air-introduced machine 4 and chimney 5.
Wherein, calorific value ＞ 1200Kcal/kg, the granularity≤20cm of high volatile carbonaceous fuel feedstock, volatile matter content is big
In 25%；
Wherein, the bed that hot efflorescence fluid bed furnace 1 adds is wear-resisting thick bed granule, including quartz sand, river sand and/or oxygen
Changing aluminum ball, particle diameter is 0.5 ~ 5mm.
Embodiment 1
Raw material is wooden unit granularity 20cm, water content 25%, calorific value 3120Kcal/kg, volatile matter content about 67%.Bed is oxygen
Change aluminum spherolite footpath 5mm and add in hot efflorescence fluid bed furnace, hot efflorescence fluid bed furnace lower gas speed 5m/s, upper gas speed
3.5m/s, in-furnace temperature 1200 DEG C.Wooden unit is pulverized into about 2mm semicoke, and enters in boiler after combustion gas mixing, is passed through with classification
Air mixed combustion.Tail gas NOx content 86mg/Nm after burning.Material combusting efficiency is about 99.9%.
Embodiment 2
Raw material is bamboo chip granularity 10cm, water content 42%, calorific value 2350Kcal/kg, volatile matter content about 63%.Bed is oxygen
Change aluminum spherolite footpath 3mm and add in hot efflorescence fluid bed furnace, hot efflorescence fluid bed furnace lower gas speed 4m/s, upper gas speed
1.6m/s, in-furnace temperature 850 DEG C.Wooden unit is pulverized into about 0.5mm semicoke, and enters after combustion gas mixing in boiler, leads to classification
The air mixed combustion entered.Tail gas NOx content 74mg/Nm after burning.Material combusting efficiency is about 99.8%.
Embodiment 3
Raw material is brown coal granularity 5cm, water content 32%, calorific value 3200Kcal/kg, volatile matter content about 43%.Bed is river
Grains of sand footpath 1.5mm adds in hot efflorescence fluid bed furnace, hot efflorescence fluid bed furnace lower gas speed 2.5m/s, upper gas speed
1.2m/s, in-furnace temperature 620 DEG C.Wooden unit is pulverized into about 1.2mm semicoke, and enters after combustion gas mixing in boiler, leads to classification
The air mixed combustion entered.Tail gas NOx content 68mg/Nm after burning.Material combusting efficiency is about 99.5%
Embodiment 4
Raw material is mud coal granularity 3cm, water content 60%, calorific value 1200Kcal/kg, volatile matter content about 56%.Bed is stone
Sand 0.5mm adds in hot efflorescence fluid bed furnace, hot efflorescence fluid bed furnace lower gas speed 1m/s, upper gas speed
0.2m/s, in-furnace temperature 400 DEG C.Wooden unit is pulverized into about 0.3mm semicoke, and enters after combustion gas mixing in boiler, leads to classification
The air mixed combustion entered.Tail gas NOx content 60mg/Nm after burning.Material combusting efficiency is about 99.4%.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, without departing from the some improvement under this utility model principle premise and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (6)
1. a high volatile carbon-containing fuel hot efflorescence high efficient combustion device, it is characterised in that: include hot efflorescence fluid bed furnace, pot
Stove, cleaner and tail gas treatment device, described hot efflorescence fluid bed furnace bottom is provided with dog-house, bottom hot efflorescence fluid bed furnace
Also being connected with the air outlet of gas transportation facilities, hot efflorescence fluid bed furnace upper outlet is connected with boiler inlet, boiler export with
The entrance of cleaner connects, and the outlet of cleaner is connected with tail gas treatment device.
A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device the most according to claim 1, it is characterised in that: institute
State dog-house and include raw material feed bin and bed feed bin.
A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device the most according to claim 1, it is characterised in that: institute
Heating surface, air preheater and economizer it has been sequentially arranged in stating boiler.
A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device the most according to claim 1, it is characterised in that: institute
Stating tail gas treatment device and include air-introduced machine and chimney, described cleaner is connected with chimney by air-introduced machine.
A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device the most according to claim 1, it is characterised in that: institute
State the dog-house bottom in hot efflorescence fluid bed furnace and be provided with the blast cap for being uniformly distributed air and temperature.
A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device the most according to claim 1, it is characterised in that: institute
State boiler internal classification and be disposed with air port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620567931.4U CN205690388U (en) | 2016-06-13 | 2016-06-13 | A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device |
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| CN201620567931.4U CN205690388U (en) | 2016-06-13 | 2016-06-13 | A kind of high volatile carbon-containing fuel hot efflorescence high efficient combustion device |
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| CN205690388U true CN205690388U (en) | 2016-11-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889906A (en) * | 2016-06-13 | 2016-08-24 | 合肥德博生物能源科技有限公司 | Thermal-pulverization high-efficiency combustion device and method for high-volatile-component carbon-containing fuel |
| CN106801862A (en) * | 2017-03-15 | 2017-06-06 | 张守军 | A kind of carbon-containing fuel efficient burning coupled electricity-generation method |
-
2016
- 2016-06-13 CN CN201620567931.4U patent/CN205690388U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889906A (en) * | 2016-06-13 | 2016-08-24 | 合肥德博生物能源科技有限公司 | Thermal-pulverization high-efficiency combustion device and method for high-volatile-component carbon-containing fuel |
| CN106801862A (en) * | 2017-03-15 | 2017-06-06 | 张守军 | A kind of carbon-containing fuel efficient burning coupled electricity-generation method |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20180214 Address after: 230088 Hefei hi tech Zone, Hefei, Anhui Province, Wangjiang West Road, Wantong Industrial Park, No. 2, 801-809 Patentee after: Hefei Deborah Power Co. Ltd. Address before: 230088 Wantong Industrial Park, No. 520, Wangjiang West Road, Hefei hi tech Zone, Anhui Province, No. 2 Patentee before: Hefei Debo Bioenergy Science & Technology Co., Ltd. |