CN208817460U - A kind of conveying of biological fuel gas and low nitrogen oxide burning device - Google Patents
A kind of conveying of biological fuel gas and low nitrogen oxide burning device Download PDFInfo
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- CN208817460U CN208817460U CN201821370102.2U CN201821370102U CN208817460U CN 208817460 U CN208817460 U CN 208817460U CN 201821370102 U CN201821370102 U CN 201821370102U CN 208817460 U CN208817460 U CN 208817460U
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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 utility model provides a kind of conveying of biological fuel gas and low nitrogen oxide burning device, it include: biomass gasifying furnace, the gas outlet of the biomass gasifying furnace is connect by gas pipeline with gas burner, gas burner is mounted on the lower end side of gas fired-boiler, gas fired-boiler upper end side is equipped with high-temperature blower, and the gas fired-boiler lower end is equipped with insulated combustion chamber, and insulated combustion chamber is connected to gas burner, burner hearth is equipped on the upside of insulated combustion chamber, burner hearth upper end is connected to high-temperature blower.The utility model send high-temperature flue gas to the exhaust gases passes to outside fuel gas transportation pipeline, is heated to gas pipeline.Tar is avoided to be precipitated and cause line clogging.Meanwhile by the way of incomplete air distribution, so that insulated combustion chamber is in reducing atmosphere, it is suppressed that the generation of NOx.
Description
Technical field
The utility model relates to Biomass Energy Utilization equipment technical field, specially a kind of biological fuel gas conveying and low
Nitrogen oxide burning device.
Background technique
China's biomass resource is abundant, and biomass is as a kind of clean reproducible energy gradually by governments at all levels and correlation
The attention of enterprise.Biomass resource is rationally utilized, the energy resource structure in China can be optimized, and biomass resource compares fossil fuel
Sulfur content is few, and sulfur dioxide in flue gas amount is low, facilitates the prevention and treatment to air pollution.The utilization means master of biomass resource at present
Have: gasification of biomass and biomass direct-fired.Because gasification of biomass has the spies such as low, the high-efficient, product diversification of cost of investment
Point is gradually widely used.However, biomass gasification fired have more bottleneck using the prior art in integrated artistic.
The combustion gas gasified out tar when by pipe cooling is precipitated, and easily leads to biomass ash and tar blocks fuel gas transportation pipeline；
Combustion gas be easy to cause high-precision burning to block after entering low NO, and ordinary burner is easy to cause NOx exceeded；Separately
Outside, since biomass fuel gas calorific value is low, it is not easy to stablize burning under low-temperature condition and burns, and the condition of high temperature will lead to NOx
It discharges exceeded.Existing gasification of biomass boiler of feeding project usually just needed to clear up gas pipeline at 1-3 months, and usually
NOx production is inhibited using SNCR or SCR, production cost is higher.
Summary of the invention
The technical issues of the utility model is solved is to provide a kind of biological fuel gas conveying and low nitrogen oxide burning
Device, to solve the problems in above-mentioned background technique.
The technical problem solved by the utility model is implemented by the following technical solutions: a kind of conveying of biological fuel gas and
Low nitrogen oxide burning device, comprising: biomass gasifying furnace, the gas outlet of the biomass gasifying furnace by gas pipeline with
Gas burner connection, gas burner are mounted on the lower end side of gas fired-boiler, and gas fired-boiler upper end side is equipped with height
Warm blower, the gas fired-boiler lower end are equipped with insulated combustion chamber, and insulated combustion chamber is connected to gas burner, on insulated combustion chamber
Side is equipped with burner hearth, and burner hearth upper end is connected to high-temperature blower.
Overfire air port is arranged in the burner hearth of gas fired-boiler, gas burner side is equipped with air blast mouth.
Flue is equipped on the outside of the gas pipeline, flue one end is connected to biomass gasifying furnace, the other end connects
It is connected to gas burner, the flue gas discharge opening of high-temperature blower is connected to flue by pipeline.
The gas burner is equipped with gas connection pipe, and gas connection pipe is connected to gas pipeline, in gas connection pipe
Side is equipped with flue gas connecting tube, and flue gas connecting tube is connected to flue.
It is compared to open technology, there are following advantages for the utility model:
(1) it send high-temperature flue gas to the exhaust gases passes to outside fuel gas transportation pipeline, gas pipeline is heated.Avoid coke
Oil is precipitated and causes line clogging.
(2) channel that high-temperature flue gas is separately provided from burner internal enters in furnace, and is arranged in air and biomass fuel
Between gas.On the one hand it can prevent air from, to the cooling of biological fuel gas, avoiding the precipitation of tar in burner；Another party
Face can reduce local oxygen content, by blocking oxygen contacting with combustion gas in the direct of insulated combustion chamber, it is suppressed that part
The formation of NOx.
(3) biomass fuel gas calorific value is low, and the insulated combustion chamber that biological fuel gas is passed into 1050 DEG C or so is burnt, can
Realize the Pintsch process for stablizing burning and biomass coke tar of biological fuel gas.Meanwhile by the way of incomplete air distribution, so that
Insulated combustion chamber is in reducing atmosphere, it is suppressed that the generation of NOx.
(4) Secondary Air is arranged in boiler furnace, can be realized burning for biological fuel gas.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the flue scheme of installation of the utility model.
Specific embodiment
In order to make, the technological means, creation characteristic, workflow, application method of the utility model reach purpose and effect is easy
Understand in understanding, below in conjunction with the utility model embodiment, to the technical scheme in the embodiment of the utility model carry out it is clear,
It is fully described by, in the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " company ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects to be mechanical connection, is also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with
Connection inside two elements, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1 and Figure 2, a kind of biological fuel gas conveying and low nitrogen oxide burning device, comprising: gasification of biomass
The gas outlet of furnace 1, the biomass gasifying furnace 1 is connect by gas pipeline 3 with gas burner 4, and gas burner 4 is installed
In the lower end side of gas fired-boiler 5, the 5 upper end side of gas fired-boiler is equipped with high-temperature blower 6, and 5 lower end of gas fired-boiler is set
There is insulated combustion chamber 501, insulated combustion chamber 501 is connected to gas burner 4, is equipped with burner hearth 502 on the upside of insulated combustion chamber 501,
502 upper end of burner hearth is connected to high-temperature blower 6.
Overfire air port 503 is arranged in the burner hearth 502 of gas fired-boiler 5,4 side of gas burner is equipped with air blast
Mouthful.
Flue 2 is equipped on the outside of the gas pipeline 3,2 one end of flue is connected to biomass gasifying furnace 1, another
End is connected to gas burner 4, and the flue gas discharge opening of high-temperature blower 6 is connected to flue 2 by pipeline.
The gas burner 4 is equipped with gas connection pipe, and gas connection pipe is connected to gas pipeline 3, gas connection pipe
Inside is equipped with flue gas connecting tube, and flue gas connecting tube is connected to flue 2.
The utility model arranges one layer for conveying the flue 2 of flue gas outside gas pipeline 3.Purpose is, leads to
It crosses high-temperature blower 6 high-temperature flue gas is sent into flue 2, strengthens the heat preservation to combustion gas, avoid combustion gas during transportation
Cooling causes tar precipitation or tar poor fluidity；, one layer of flue gas connecting tube is arranged inside burner 4, is connected in combustion gas
Between adapter tube and air duct.Purpose is, allows high-temperature flue gas between burner (4) internal air and biological fuel gas
Channel enters insulated combustion chamber 501.First, preventing cooling of the air in burner (4) to biological fuel gas, and it is precipitated burnt
Oil；Second, oxygen has been blocked to contact with combustion gas in the direct of insulated combustion chamber 501, local oxygen content is reduced, to press down
The formation of NOx processed；Third, the energy of flue gas comes back to system, the heat waste of whole system is reduced.
A kind of conveying of biological fuel gas and low nitrogen oxide combustion method, comprising the following steps:
A. high-temperature blower 6 is sent from the high-temperature flue gas of boiler flue extraction a part to flue 2, then is conveyed through pipeline 2
To gas burner 4；Biological fuel gas is delivered to gas burner 4 through gas pipeline 3 from 1 gas outlet of gasification furnace
B. three layers of conveyance conduit are arranged in gas burner 4, and the flue gas of flue 2 is sent to middle layer delivery pipe
Road, combustion gas and air are arranged in remaining two layers of conveyance conduit；
C. biological fuel gas and air, which are sent through burner 4 to insulated combustion chamber 501, burns.It is configured in insulated combustion chamber 501
First air, in the overfire air port 503 of boiler furnace 502 is configured with Secondary Air.
The flue gas share extracted from boiler flue accounts for 10%~30%, and temperature is 300~550 DEG C.Purpose is,
Tar Precipitation Temperature send suitable high-temperature flue gas to the exhaust gases passes of outer layer at 350 DEG C or so, can rise to the combustion gas of internal layer
To good insulation effect, combustion gas is avoided to cool down during transportation, tar is caused to be precipitated.
The insulated combustion chamber 501 arranges the First air that Air compress pump is 0.4~0.8；The temperature of insulated combustion chamber
Degree control is at 1050 DEG C or so；The Secondary Air that Air compress pump is 0.4~1.1 is arranged in boiler furnace 502.Purpose exists
In in insulated combustion chamber 501 by the way of incomplete air distribution, so that insulated combustion chamber 501 is able to suppress in reducing atmosphere
The generation of NOx；The temperature of insulated combustion chamber 501 is controlled at 1050 DEG C or so, can be realized biological fuel gas stablize burning and
The Pintsch process of biomass coke tar；Secondary Air is arranged in boiler furnace 502, can be realized burning for biological fuel gas.
Embodiment 1: bamboo scraps gasify in fluidized-bed gasification furnace, and the biological fuel gas that the temperature of generation is 680 DEG C is through fuel gas conduit
Road is delivered to gas burner, conveys combustion from boiler flue extraction 10%, the high-temperature flue gas that temperature is 550 DEG C using high-temperature blower
The outer layer pipe of feed channel is delivered to insulated combustion chamber using the middle layer pipeline of gas burner, and biological fuel gas is from burning
The inner layer pipe of device is delivered to insulated combustion chamber, the outer layer pipe of burner arrange Air compress pump be 0.4 it is primary
Wind, biological fuel gas are sent through burner to adiabatic combustion Indoor Combustion, and the temperature of insulated combustion chamber is controlled at 1060 DEG C or so,
Boiler furnace arranges the Secondary Air that Air compress pump is 1.1, and boiler hearth temperature is at 1030 DEG C or so.In whole system heat
In state operation, adiabatic combustion indoor fuel gas flameholding is observed.The content of the NOx of flue gas analyzer is 105mg/Nm3, is compared
Traditional gas fired-boiler, the content of NOx reduces by 18% in tail gas.After blowing out, to gas pipeline inner wall and burner internal into
It has gone inspection, has adhered to almost without tar.
Embodiment 2: stalk gasifies in fluidized-bed gasification furnace, and the biological fuel gas that the temperature of generation is 650 DEG C is through fuel gas conduit
Road is delivered to gas burner, conveys combustion from boiler flue extraction 20%, the high-temperature flue gas that temperature is 400 DEG C using high-temperature blower
The outer layer pipe of feed channel is delivered to insulated combustion chamber using the middle layer pipeline of gas burner, and biological fuel gas is from burning
The inner layer pipe of device is delivered to insulated combustion chamber, the outer layer pipe of burner arrange Air compress pump be 0.7 it is primary
Wind, biological fuel gas are sent through burner to adiabatic combustion Indoor Combustion, and the temperature of insulated combustion chamber is controlled at 1065 DEG C or so,
Boiler furnace arranges the Secondary Air that Air compress pump is 0.5, and boiler hearth temperature is at 1020 DEG C or so.In whole system heat
In state operation, adiabatic combustion indoor fuel gas flameholding is observed.The content of the NOx of flue gas analyzer is 102mg/Nm3, is compared
Traditional gas fired-boiler, the content of NOx reduces by 21% in tail gas.After blowing out, to gas pipeline inner wall and burner internal into
It has gone inspection, has adhered to almost without tar.
Embodiment 3: wood chip gasifies in fluidized-bed gasification furnace, and the biological fuel gas that the temperature of generation is 660 DEG C is through fuel gas conduit
Road is delivered to gas burner, conveys combustion from boiler flue extraction 30%, the high-temperature flue gas that temperature is 300 DEG C using high-temperature blower
The outer layer pipe of feed channel is delivered to insulated combustion chamber using the middle layer pipeline of gas burner, and biological fuel gas is from burning
The inner layer pipe of device is delivered to insulated combustion chamber, the outer layer pipe of burner arrange Air compress pump be 0.8 it is primary
Wind, biological fuel gas are sent through burner to adiabatic combustion Indoor Combustion, and the temperature of insulated combustion chamber is controlled at 1090 DEG C or so,
Boiler furnace arranges the Secondary Air that Air compress pump is 0.4, and boiler hearth temperature is at 950 DEG C or so.In whole system heat
In state operation, adiabatic combustion indoor fuel gas flameholding is observed.The content of the NOx of flue gas analyzer is 98mg/Nm3, is compared
Traditional gas fired-boiler, the content of NOx reduces by 20% in tail gas.After blowing out, to gas pipeline inner wall and burner internal into
It has gone inspection, has adhered to almost without tar.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range be defined by the appending claims and its equivalent thereof.
Claims (4)
1. a kind of biological fuel gas conveying and low nitrogen oxide burning device, comprising: biomass gasifying furnace, it is characterised in that: institute
The gas outlet for stating biomass gasifying furnace is connect by gas pipeline with gas burner, and gas burner is mounted on gas fired-boiler
Lower end side, gas fired-boiler upper end side be equipped with high-temperature blower, the gas fired-boiler lower end be equipped with insulated combustion chamber, absolutely
Hot chamber is connected to gas burner, is equipped with burner hearth on the upside of insulated combustion chamber, burner hearth upper end is connected to high-temperature blower.
2. a kind of biological fuel gas conveying according to claim 1 and low nitrogen oxide burning device, it is characterised in that:
The burner hearth of gas fired-boiler arranges overfire air port, and gas burner side is equipped with air blast mouth.
3. a kind of biological fuel gas conveying according to claim 1 and low nitrogen oxide burning device, it is characterised in that: institute
It states and is equipped with flue on the outside of gas pipeline, flue one end is connected to biomass gasifying furnace, the other end is connected to combustion gas combustion
The flue gas discharge opening of burner, high-temperature blower is connected to flue by pipeline.
4. a kind of biological fuel gas conveying according to claim 1 and low nitrogen oxide burning device, it is characterised in that: institute
Gas burner is stated equipped with gas connection pipe, gas connection pipe is connected to gas pipeline, is equipped with flue gas on the inside of gas connection pipe
Connecting tube, flue gas connecting tube are connected to flue.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821370102.2U CN208817460U (en) | 2018-08-24 | 2018-08-24 | A kind of conveying of biological fuel gas and low nitrogen oxide burning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821370102.2U CN208817460U (en) | 2018-08-24 | 2018-08-24 | A kind of conveying of biological fuel gas and low nitrogen oxide burning device |
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| CN208817460U true CN208817460U (en) | 2019-05-03 |
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| CN201821370102.2U Active CN208817460U (en) | 2018-08-24 | 2018-08-24 | A kind of conveying of biological fuel gas and low nitrogen oxide burning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826274A (en) * | 2018-08-24 | 2018-11-16 | 合肥德博生物能源科技有限公司 | A kind of conveying of biological fuel gas and low nitrogen oxide burning device and method |
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2018
- 2018-08-24 CN CN201821370102.2U patent/CN208817460U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826274A (en) * | 2018-08-24 | 2018-11-16 | 合肥德博生物能源科技有限公司 | A kind of conveying of biological fuel gas and low nitrogen oxide burning device and method |
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