CN207635328U - A kind of low nitrogen combustion apparatus for flue gas recirculation - Google Patents
A kind of low nitrogen combustion apparatus for flue gas recirculation Download PDFInfo
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- CN207635328U CN207635328U CN201721798245.9U CN201721798245U CN207635328U CN 207635328 U CN207635328 U CN 207635328U CN 201721798245 U CN201721798245 U CN 201721798245U CN 207635328 U CN207635328 U CN 207635328U
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- low nitrogen
- combustion apparatus
- nitrogen combustion
- secondary air
- flue gas
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Abstract
The utility model provides a kind of low nitrogen combustion apparatus for flue gas recirculation, the low nitrogen combustion apparatus includes the boiler, air-introduced machine and chimney set gradually, the wherein main burning area of boiler and combustion zone is connected separately with a wind pipe and secondary air duct again, low nitrogen combustion apparatus further includes cycle flue, the outlet of cycle flue and air-introduced machine and the outlet of chimney, the flue gas in air-introduced machine and chimney is led in a wind pipe and secondary air duct.Low nitrogen combustion apparatus according to the present utility model, cycle flue leads to flue gas recycled in a wind pipe and secondary air duct, utilize hypothermia and hypoxia feature possessed by flue gas recycled, partial fume is sprayed into boiler again, control the exhaust gas volumn of flue gas recycled and the proportioning of flue gas recycled and First air, Secondary Air, reduce local temperature in boiler furnace, form local reduction atmosphere, inhibit the generation of nitrogen oxides, improve clinker coking phenomenon in boiler furnace, and improves boiler grate high temperature corrosion.
Description
Technical field
The utility model is related to generating power with biomass combustion technical field, in particular to a kind of for flue gas recirculation
Low nitrogen combustion apparatus.
Background technology
Currently, biomass power plant rapidly develops at home, and in the flue gas that biomass fuel combustion process generates, contain
A large amount of pollutant (such as nitrogen oxides, flue dust, sour gas) has environment different degrees of harm, is examined for cost
Consider, country's biomass electric power plant generally uses the method for denitration of SNCR (selective catalytic reduction) at present, but SNCR denitration efficiency is omited
It is low, rely solely on the emission request (100mg/Nm that SNCR this traditional denitration means are unable to reach biomass electric power plant nitrogen oxides3
Below), therefore, to reduce operating cost, higher and higher emission request is adapted to, combustion process is controlled by combustion technology means
The nitrogen oxides of middle production reduces the generation of nitrogen oxides from source, become the development of domestic biomass electric power plant inexorable trend it
One.
Flue gas recirculation method low-NO_x combustion technology has a significant effect to the discharge for reducing NOx in boiler, because flue gas is inhaled
Heat and oxygen concentration is diluted, burning velocity and in-furnace temperature is made to reduce, thus reduces the generation of NOx.The low nitrogen of flue gas recirculation method
Combustion technology greatly reduces the production rate of NOx by lower input, reduces the ammonium hydroxide usage amount of SNCR, has saved fortune
Row cost.Biomass fuel has different combustion characteristics and combustion system from the coal as traditional fuel, therefore provides a kind of
The low nitrogen combustion apparatus that can apply to the flue gas recirculation method of biomass electric power plant, can not only greatly reduce operating cost, simultaneously
Higher emission request can be met again.
Therefore, it is necessary to the flue gas recirculation for biomass combustion power plant provides a kind of new low nitrogen combustion apparatus, with
Solve above-mentioned technical problem.
Utility model content
A series of concept of reduced forms is introduced in utility model content part, this will be in specific embodiment part
Middle further description.The utility model content part of the utility model is not meant to attempt to limit claimed
Technical solution key feature and essential features, do not mean that more attempt determine technical solution claimed guarantor
Protect range.
For current deficiency, the utility model provides a kind of low nitrogen combustion apparatus for flue gas recirculation, including according to
Boiler, air-introduced machine and the chimney of secondary setting, wherein the main burning area of the boiler and combustion zone is connected separately with primary air piping again
Road and secondary air duct, the low nitrogen combustion apparatus further include cycle flue, the outlet of the cycle flue and the air-introduced machine
With the outlet of the chimney, the flue gas in the air-introduced machine and the chimney is led into a wind pipe and described
In secondary air duct.
Further, the low nitrogen combustion apparatus further includes the circulating fan being arranged on the cycle flue, the cycle
Wind turbine is connect with a wind pipe and the secondary air duct.
Further, the secondary air duct includes front wall secondary air duct and rear wall secondary air duct.
Further, the low nitrogen combustion apparatus further includes that entering in a wind pipe and the secondary air duct is arranged
Branch pipe regulating valve at mouthful.
Further, the low nitrogen combustion apparatus further includes being separately positioned on a wind pipe and the secondary air duct
Inlet branch flowmeter for pipe.
Further, the low nitrogen combustion apparatus further includes being separately positioned on a wind pipe and the secondary air duct
Inlet branch pipe pressure remote transmission device.
Further, the low nitrogen combustion apparatus further includes the outlet header's flow being arranged in the exit of the circulating fan
Meter.
Further, the low nitrogen combustion apparatus further includes the outlet header's adjusting being arranged in the exit of the circulating fan
Valve.
Further, the low nitrogen combustion apparatus further includes the intake header adjusting being arranged in the inlet of the circulating fan
Valve.
Further, the low nitrogen combustion apparatus further includes the outlet header's pressure being arranged in the exit of the circulating fan
Remote transmission device.
In conclusion low nitrogen combustion apparatus according to the present utility model, flue gas recycled is led to institute by the cycle flue
It states in a wind pipe and the secondary air duct, using hypothermia and hypoxia feature possessed by the flue gas recycled, by part
Flue gas sprays into boiler again, controls the exhaust gas volumn of flue gas recycled and the proportioning of flue gas recycled and First air, Secondary Air, reduces
Local temperature in the burner hearth of boiler, and local reduction atmosphere is formed, to inhibit the generation of nitrogen oxides, and then effectively change
The coking phenomenon of the inner of the boiler chamber slag of kind boiler, and improve the high temperature corrosion of the fire grate of boiler, simultaneously as reducing nitrogen oxidation
The production rate of object, it is possible to reduce the ammonium hydroxide usage amount of SNCR has saved operating cost；In addition, flue gas recycled is derived from air-introduced machine
Clean flue gas afterwards, it is possible to reduce equipment, the dust stratification risk of a wind pipe, secondary air duct and cycle flue.
Description of the drawings
The following drawings of the utility model is used to understand the utility model in this as the part of the utility model.Attached drawing
In show the embodiments of the present invention and its description, for explaining the principles of the present invention.
In attached drawing：
Fig. 1 is the structural schematic diagram of the low nitrogen combustion apparatus of the utility model embodiment.
Reference sign：
100, low nitrogen combustion apparatus 101, boiler
102, air-introduced machine 103, chimney
104, cycle flue 105, a wind pipe
106, secondary air duct 107, circulating fan
108, branch pipe regulating valve 109, branch flowmeter for pipe
110, branch pipe pressure remote transmission device 111, intake header regulating valve
112, outlet header's regulating valve 113, outlet header's flowmeter
114, outlet header's pressure remote transmission device 115, starter
1061, front wall secondary air duct 1062, rear wall secondary air duct
Specific implementation mode
In the following description, a large amount of concrete details are given more thoroughly to manage in order to provide to the utility model
Solution.It is, however, obvious to a person skilled in the art that the utility model may not need it is one or more of these thin
It saves and is carried out.In other examples, in order to avoid obscuring with the utility model, for more well known in the art
Technical characteristic is not described.
In order to thoroughly understand the utility model, specific embodiment will be proposed in following description, to illustrate this
Utility model how to improve presently, there are the problem of.Obviously, the execution of the utility model is not limited to those skilled in the art
The specific details that member is familiar with.The preferred embodiment of the utility model is described in detail as follows, however other than these detailed descriptions,
The utility model can also have other embodiment.
It should be understood that when the term " comprising " and/or " including " is used in this specification, indicating described in presence
Feature, entirety, step, operation, element and/or component, but do not preclude the presence or addition of other one or more features, entirety,
Step, operation, element, component and/or combination thereof.
Flue gas recirculation method low-NO_x combustion technology has a significant effect to the discharge for reducing NOx in boiler, because flue gas is inhaled
Heat and oxygen concentration is diluted, burning velocity and in-furnace temperature is made to reduce, thus reduces the generation of NOx.The low nitrogen of flue gas recirculation method
Combustion technology greatly reduces the production rate of NOx by lower input, reduces the ammonium hydroxide usage amount of SNCR, has saved fortune
Row cost.But the low nitrogen combustion apparatus for flue gas recirculation method generally used at present, one kind are using external or interior
The wind turbine in portion, which is extracted into low-temperature circulating flue gas in flame combustion chamber, to burn, the disadvantage is that flue gas is shorter in the burner hearth residence time, greatly
Amount flue gas flows through burner hearth, increases heat loss due to exhaust gas；It is another kind of that low-temperature circulating flue gas is sent directly into burner by pipeline
Burnt with combustion air when mixing, the disadvantage is that circulating flue gas mixed with combustion air air-flow it is uneven, with fuel combustion hold
It is also easy to produce localized hyperthermia and generates a large amount of NOx.Biomass fuel and the coal as traditional fuel have different combustion characteristics with
Combustion system, therefore a kind of low nitrogen combustion apparatus for the flue gas recirculation method can apply to biomass electric power plant is provided, it can not only be big
Big reduction operating cost, while higher emission request can be met again.
Exemplary embodiment
Fig. 1 shows a kind of knot of low nitrogen combustion apparatus 100 for flue gas recirculation of the embodiments of the present invention
Structure schematic diagram.The low nitrogen combustion apparatus is specifically described referring to Fig. 1.
Embodiment according to the present utility model, a kind of low nitrogen combustion apparatus 100 include boiler 101, the air inducing set gradually
Machine 102 and chimney 103,
The wherein main burning area of the boiler 101 and combustion zone is connected separately with a wind pipe 105 and secondary air channel again
Road 106, the low nitrogen combustion apparatus 100 further include cycle flue 104, and the cycle flue 104 goes out with the air-introduced machine 102
The outlet of mouth and the chimney 103 leads to the flue gas in the air-introduced machine 102 and the chimney 103 described primary
In wind pipeline 105 and the secondary air duct 106.
Flue gas recycled is led to the primary air piping by low nitrogen combustion apparatus according to the present utility model, the cycle flue
Road and the secondary air duct are sprayed into partial fume using hypothermia and hypoxia feature possessed by the flue gas recycled again
Boiler controls the exhaust gas volumn of flue gas recycled and the proportioning of flue gas recycled and First air, Secondary Air, reduces in the burner hearth of boiler
Local temperature, and local reduction atmosphere is formed, to inhibit the generation of nitrogen oxides, reduce 20% or more nitrogen oxides
Generation, and then effectively improve the coking phenomenon of the inner of the boiler chamber slag of boiler, while controlling fire box temperature, and improve boiler
The high temperature corrosion of fire grate, simultaneously as reducing the production rate of nitrogen oxides, it is possible to reduce the ammonium hydroxide usage amount of SNCR is saved
Operating cost；In addition, flue gas recycled is derived from the clean flue gas after air-introduced machine, it is possible to reduce equipment, a wind pipe, secondary
The dust stratification risk of wind pipeline and cycle flue.
Wherein, the boiler 101 includes grate wind chamber, combustion chamber, burner hearth, superheater, economizer, gas cooler, removes
The structures such as dirt device, air preheater, pressure fan and muffler, concrete structure is with reference to the prior art, and details are not described herein.
Illustratively, the secondary air duct 106 includes front wall secondary air duct 1061 and rear wall secondary air duct 1062,
Flue gas recycled leads to a wind pipe 105, the front wall secondary air duct 1061 simultaneously by the cycle flue 104
With the rear wall secondary air duct 1062.
Further, the low nitrogen combustion apparatus 100 further includes the circulating fan 107 being arranged on the cycle flue 104,
The circulating fan 107 is connect with a wind pipe 105 and the secondary air duct 106.The circulating fan 107 is used for
It pressurizes to the flue gas recycled, flue gas recycled leads to described primary after being pressurizeed by the circulating fan 107
Wind pipeline 105 and the secondary air duct 106.Due to the secondary air duct 106 include front wall secondary air duct 1061 and after
Wall secondary air duct 1062, therefore, a wind pipe 105, the front wall secondary air duct 1061 and the rear wall are secondary
Wind pipeline 1062 is connect with the circulating fan 107 in parallel.Further, the circulating fan 107 is frequency conversion fan.
Further, the low nitrogen combustion apparatus 100 further includes being separately positioned on a wind pipe 105, the front wall
The branch pipe regulating valve 108 of the inlet of secondary air duct 1061 and the rear wall secondary air duct 1062, enters branch for controlling
The exhaust gas volumn of the flue gas recycled of pipe.The cigarette of flue gas can be controlled by adjusting the opening size of the branch pipe regulating valve 108
Tolerance, in addition, by adjust respectively setting a wind pipe 105, the front wall secondary air duct 1061 and it is described after
The branch pipe regulating valve 108 of the inlet of wall secondary air duct 1062, can also control flue gas recycled and First air, front wall are secondary
The proportioning of wind, rear wall Secondary Air, more effectively inhibits the generation of nitrogen oxides, and then more effectively improves the inner of the boiler chamber of boiler
The coking phenomenon of slag, and improve the high temperature corrosion of the fire grate of boiler.Further, the branch pipe regulating valve 108 is electric control valve.
Further, the low nitrogen combustion apparatus 100 further includes being separately positioned on a wind pipe 105, the front wall
Secondary air duct 1061 and it is described after wall secondary air duct 1062 inlet branch flowmeter for pipe 109 and be separately positioned on institute
State the branch pipe of the inlet of a wind pipe 105, the front wall secondary air duct 1061 and the rear wall secondary air duct 1062
The signal of pressure remote transmission device 110, the branch pipe pressure remote transmission device 110 is connected to distribution control system, the distributed controll
The signal that system is transmitted according to the branch pipe pressure remote transmission device 110 is to the exhaust gas volumn and flue gas recycled of flue gas recycled and one
Secondary wind, Secondary Air proportioning controlled, reduce local temperature in the burner hearth of boiler, and form local reduction atmosphere, to
Inhibit the generation of nitrogen oxides.Optionally, the branch pipe pressure remote transmission device 110 includes pressure remote installed meter.
Further, the low nitrogen combustion apparatus 100 further includes that the import that is arranged in the inlet of the circulating fan 107 is total
Pipe regulating valve 111 is arranged and is followed described in outlet header's flowmeter 113 in the exit of the circulating fan 107 and setting
Outlet header's regulating valve 112 in the exit of ring wind turbine 107.According to the registration of outlet header's flowmeter 113, pass through control
The opening size of intake header regulating valve 111 and outlet header's regulating valve 112, can control through the primary air piping
Road 105, front wall secondary air duct 1061 and rear wall secondary air duct 1062 flue gas recycled exhaust gas volumn, flue gas recycled
Exhaust gas volumn is about the 20% of total exhaust gas volumn.
Further, the low nitrogen combustion apparatus 100 further includes that the outlet that is arranged in the exit of the circulating fan 107 is total
Pipe pressure remote transmission device 114.The signal of the manifold pressure remote transmission device 114 is connected to distribution control system, the distribution control
System processed controls the exhaust gas volumn of flue gas recycled according to the signal that the manifold pressure remote transmission device 114 transmits.It is optional
Ground, outlet header's pressure remote transmission device 114 include pressure remote installed meter.
Further, the low nitrogen combustion apparatus 100 further include connect with the chimney 103, for starting the boiler
101 starter 115.
The operation principle of the low nitrogen combustion apparatus 100 of the utility model is that flue gas recycled passes through the circulating fan
After 107 pressurizations, a wind pipe 105, the front wall secondary air duct 1061 and institute are led to by the cycle flue 104
Rear wall secondary air duct 1062 is stated, using hypothermia and hypoxia feature possessed by the flue gas recycled, partial fume is sprayed again
The burner hearth proper site for entering boiler is controlled by distribution control system and is recycled in conjunction with the time of vibration and vibration frequency of fire grate
The proportioning of the exhaust gas volumn and flue gas recycled of flue gas and First air, front wall Secondary Air, rear wall Secondary Air, reduces in the burner hearth of boiler
Local temperature, and local reduction atmosphere is formed, to inhibit the generation of nitrogen oxides, and then effectively improve the burner hearth of boiler
The coking phenomenon of interior clinker, while fire box temperature is controlled, and improve the high temperature corrosion of the fire grate of boiler, simultaneously as reducing
The production rate of nitrogen oxides, it is possible to reduce the ammonium hydroxide usage amount of SNCR has saved operating cost；In addition, flue gas recycled is derived from
Clean flue gas after the air-introduced machine 102, it is possible to reduce equipment, a wind pipe, secondary air duct and cycle flue dust stratification
Risk.
Further, in order to obtain best flue gas recirculation ratio, CFD (Computational Fluid can be combined
Dynamics, computational fluid dynamics) simulation, obtain design data；Then on this basis, the number obtained according to field test
It is matched according to continuous adjustment, so that it is determined that (exhaust gas volumn of flue gas recycled is about the percentage of total exhaust gas volumn to optimal flue gas recirculation ratio
Than)；Then by being adjusted respectively mounted on a wind pipe 105, the front wall secondary air duct 1061 and the rear wall
The branch pipe regulating valve 108 of the inlet of secondary air duct 1062 controls the proportioning of First air, front wall Secondary Air, rear wall Secondary Air.
In addition, in other embodiments, it can be in conjunction with the characteristics of biomass vibration grate, according to different biomass combustions
Proportioning, determines the proportioning of different First airs, front wall Secondary Air, rear wall Secondary Air, and then extend to more biomass electric power plants.
Low nitrogen combustion apparatus according to the present utility model, flue gas recycled lead to the First air by the cycle flue
Pipeline and the secondary air duct are sprayed partial fume using hypothermia and hypoxia feature possessed by the flue gas recycled again
Enter boiler, controls the exhaust gas volumn of flue gas recycled and the proportioning of flue gas recycled and First air, Secondary Air, reduce the burner hearth of boiler
Interior local temperature, and local reduction atmosphere is formed, to inhibit the generation of nitrogen oxides, and then effectively improve the stove of boiler
The coking phenomenon of clinker in thorax, while fire box temperature is controlled, and improve the high temperature corrosion of the fire grate of boiler, simultaneously as reducing
The production rate of nitrogen oxides, it is possible to reduce the ammonium hydroxide usage amount of SNCR saved operating cost；In addition, flue gas recycled takes
Clean flue gas after self-induced-air machine, it is possible to reduce equipment, the dust stratification risk of a wind pipe, secondary air duct and cycle flue.
The utility model is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is
Purpose for illustrating and illustrating, and be not intended to limit the invention within the scope of described embodiment.In addition ability
Field technique personnel are it is understood that the utility model is not limited to above-described embodiment, and introduction according to the present utility model is also
More kinds of variants and modifications can be made, these variants and modifications all fall within the utility model range claimed with
It is interior.The scope of protection of the utility model is defined by the appended claims and its equivalent scope.
Claims (10)
1. a kind of low nitrogen combustion apparatus for flue gas recirculation, which is characterized in that including set gradually boiler, air-introduced machine and
Chimney,
The main burning area of the wherein described boiler and again combustion zone are connected separately with a wind pipe and secondary air duct, the low nitrogen
Burner further includes cycle flue, the cycle flue and the outlet of the air-introduced machine and the outlet of the chimney, with
Flue gas in the air-introduced machine and the chimney is led in a wind pipe and the secondary air duct.
2. low nitrogen combustion apparatus according to claim 1, which is characterized in that the low nitrogen combustion apparatus further includes that setting exists
Circulating fan on the cycle flue, the circulating fan are connect with a wind pipe and the secondary air duct.
3. low nitrogen combustion apparatus according to claim 1, which is characterized in that the secondary air duct includes front wall Secondary Air
Pipeline and rear wall secondary air duct.
4. low nitrogen combustion apparatus according to claim 1, which is characterized in that the low nitrogen combustion apparatus further includes that setting exists
The branch pipe regulating valve of the inlet of a wind pipe and the secondary air duct.
5. low nitrogen combustion apparatus according to claim 1, which is characterized in that the low nitrogen combustion apparatus further includes setting respectively
Set the branch flowmeter for pipe in the inlet of a wind pipe and the secondary air duct.
6. low nitrogen combustion apparatus according to claim 1, which is characterized in that the low nitrogen combustion apparatus further includes setting respectively
Set the branch pipe pressure remote transmission device in the inlet of a wind pipe and the secondary air duct.
7. low nitrogen combustion apparatus according to claim 2, which is characterized in that the low nitrogen combustion apparatus further includes that setting exists
Outlet header's flowmeter in the exit of the circulating fan.
8. low nitrogen combustion apparatus according to claim 2, which is characterized in that the low nitrogen combustion apparatus further includes that setting exists
Outlet header's regulating valve in the exit of the circulating fan.
9. low nitrogen combustion apparatus according to claim 2, which is characterized in that the low nitrogen combustion apparatus further includes that setting exists
The intake header regulating valve of the inlet of the circulating fan.
10. low nitrogen combustion apparatus according to claim 2, which is characterized in that the low nitrogen combustion apparatus further includes setting
Outlet header's pressure remote transmission device in the exit of the circulating fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721798245.9U CN207635328U (en) | 2017-12-20 | 2017-12-20 | A kind of low nitrogen combustion apparatus for flue gas recirculation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721798245.9U CN207635328U (en) | 2017-12-20 | 2017-12-20 | A kind of low nitrogen combustion apparatus for flue gas recirculation |
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| CN207635328U true CN207635328U (en) | 2018-07-20 |
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ID=62853504
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| CN201721798245.9U Active CN207635328U (en) | 2017-12-20 | 2017-12-20 | A kind of low nitrogen combustion apparatus for flue gas recirculation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059012A (en) * | 2018-08-16 | 2018-12-21 | 天津大学 | Ground flare closed type combusting device vent gas denitrating system and method |
| CN110296220A (en) * | 2019-07-04 | 2019-10-01 | 杨龙 | A kind of high temperature flue-gas from boiler recycling FGR butterfly valve control system |
| CN110375293A (en) * | 2019-06-28 | 2019-10-25 | 浙江先创能源科技股份有限公司 | A kind of interior combined-circulation once-through boiler of flue gas pressure |
| CN110486716A (en) * | 2019-09-11 | 2019-11-22 | 西安热工研究院有限公司 | A kind of system and method reducing the NOx that W flame boiler combustion generates |
| CN110645570A (en) * | 2019-10-29 | 2020-01-03 | 辽宁绿源能源环保科技集团有限责任公司 | Boiler structure and denitration method in boiler |
| CN110657439A (en) * | 2019-09-27 | 2020-01-07 | 光大绿色环保管理（深圳）有限公司 | Flue gas recirculation device for separating primary air and secondary air |
| CN111006200A (en) * | 2019-11-11 | 2020-04-14 | 黑龙江赫尔特生物质能源发展有限公司 | Boiler for small-sized house with automatic feeding device and using whole bundle of straw fuel |
| CN113587083A (en) * | 2021-07-27 | 2021-11-02 | 光大环境科技（中国）有限公司 | Grate furnace primary air distribution adjusting device and adjusting method |
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2017
- 2017-12-20 CN CN201721798245.9U patent/CN207635328U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059012A (en) * | 2018-08-16 | 2018-12-21 | 天津大学 | Ground flare closed type combusting device vent gas denitrating system and method |
| CN109059012B (en) * | 2018-08-16 | 2023-10-10 | 天津大学 | Ground torch closed combustor exhaust gas denitration system and method |
| CN110375293A (en) * | 2019-06-28 | 2019-10-25 | 浙江先创能源科技股份有限公司 | A kind of interior combined-circulation once-through boiler of flue gas pressure |
| CN110296220A (en) * | 2019-07-04 | 2019-10-01 | 杨龙 | A kind of high temperature flue-gas from boiler recycling FGR butterfly valve control system |
| CN110486716A (en) * | 2019-09-11 | 2019-11-22 | 西安热工研究院有限公司 | A kind of system and method reducing the NOx that W flame boiler combustion generates |
| CN110657439A (en) * | 2019-09-27 | 2020-01-07 | 光大绿色环保管理（深圳）有限公司 | Flue gas recirculation device for separating primary air and secondary air |
| CN110645570A (en) * | 2019-10-29 | 2020-01-03 | 辽宁绿源能源环保科技集团有限责任公司 | Boiler structure and denitration method in boiler |
| CN111006200A (en) * | 2019-11-11 | 2020-04-14 | 黑龙江赫尔特生物质能源发展有限公司 | Boiler for small-sized house with automatic feeding device and using whole bundle of straw fuel |
| CN111006200B (en) * | 2019-11-11 | 2023-10-03 | 黑龙江赫尔特生物质能源发展有限公司 | Boiler using whole bundle of straw fuel for small house belt automatic feeding device |
| CN113587083A (en) * | 2021-07-27 | 2021-11-02 | 光大环境科技（中国）有限公司 | Grate furnace primary air distribution adjusting device and adjusting method |
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