CN207214050U - A kind of burner - Google Patents
A kind of burner Download PDFInfo
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- CN207214050U CN207214050U CN201721131975.3U CN201721131975U CN207214050U CN 207214050 U CN207214050 U CN 207214050U CN 201721131975 U CN201721131975 U CN 201721131975U CN 207214050 U CN207214050 U CN 207214050U
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Abstract
The utility model discloses a kind of burner, belongs to fuel combustion appliance technical field, including：Burner outlet (7), it includes one or more fuel outlets, for being connected to the burner hearth (9) of boiler, one or more fuel is transported in burner hearth (9) and burnt；First air passage (1), First air entrance is provided with its one end side wall, and the other end extends to the burner outlet (7) and is formed as First air outlet；Secondary air channel (2), Secondary Air entrance is provided with its one end side wall, and the other end extends to the burner outlet (7) and is formed as Secondary Air outlet；Oil gas supply rifle (3), its one end are formed as oil gas entrance, and the other end extends to the burner outlet (7) and is formed as oil gas vent, and liquid or gaseous fuel are conveyed for timesharing.The utility model supplies rifle (3) by increasing oil gas, on the basis of the First air and Secondary Air of traditional coal powder fired boiler burner, realizes the supply and burning of multi fuel.
Description
Technical field
It the utility model is related to fuel combustion appliance technical field, more particularly to a kind of burner.
Background technology
Global warming is right in emission reduction tasks and 13 ENERGY PLANNINGs that Chinese Government promises to undertake with reply climate change
The carbon intensity of the fossil-fired unit of domestic five big Power Groups proposes specific requirement, i.e., to the year two thousand twenty, five big electricity
The average carbon intensity of the fossil-fired unit of power will be in 650kgCO2/ below kWh.Following coal-burning power plant is required for passing through purchase
Tradable green certificates or carbon index are bought to maintain annual generation load amount, or just needs to carry out fuel flexibility transformation, becomes low-carbon
Discharge the thermal power plant of intensity.
The boiler of existing Large-scale fire-electricity unit is largely to use high-efficiency pulverized coal boiler form, in order to solve the above problems,
Prior art has carried out fuel flexibility transformation, but these schemes have following defect in itself：
The technical scheme of prior art, which generally requires, to be done large-scale high cost to boiler body and boiler heating surface and changes
Make, and transform it is latter as only allow a kind of fuel that burns, such as pulverized-coal fired boiler to be changed to the boiler of fired biomass completely, so do
The flexibility of fuel is not realized actually.
Utility model content
(1) purpose of utility model
The purpose of this utility model is to provide a kind of burner, applied in large-scale power station pulverized-coal fired boiler, by existing power station
The burner structure of pulverized-coal fired boiler is transformed, on the basis of rebuilding at low cost, it is possible to realizes the combustion of Large-scale fire-electricity unit
Expect flexibility.Rifle is supplied by increasing oil gas, powdered biomass supplies rifle, pure oxygen supplies rifle and corresponding multi fuel supply pipe
Road, so as to realize on the basis of the First air and Secondary Air of traditional coal powder fired boiler burner, realize multi fuel supply and
Burning.The particularly introducing of biogas, hydrogen and pure oxygen, it is possible to achieve the low-load combustion-stabilizing of Large-scale fire-electricity unit boiler,
So as to improve the load range of boiler at low load peak regulation, the peak modulation capacity of fired power generating unit is increased, passes through the annual depth for participating in power network
Peak regulation is spent, power plant is obtained peak regulation subsidy.Meanwhile the utilization of the high-efficiency cleaning of biomass energy, domestic burning straw can be avoided
Pollute, increase farmers' income caused by the biomass such as stalk.
(2) technical scheme
To solve the above problems, the utility model provides a kind of burner, including：Burner outlet, it includes one kind
Or pluralities of fuel outlet, for being connected to the burner hearth of boiler, one or more fuel are transported in burner hearth and burnt；One
Secondary wind passage, First air entrance is provided with its one end side wall, the other end extends to the burner outlet and is formed as once
Wind exports；Secondary air channel, Secondary Air entrance is provided with its one end side wall, and the other end extends to the burner outlet and shape
Exported as Secondary Air；Oil gas supplies rifle, and its one end is formed as oil gas entrance, and the other end extends to the burner outlet and shape
As oil gas vent, liquid or gaseous fuel are conveyed for timesharing.
Further, the axis of oil gas supply rifle and the axis of the First air passage form the first angle, and described the
The angular range of one angle is 0 °~30 °.
Further, the oil gas vent end of the oil gas supply rifle is provided with the first shutoff valve；The oil gas supply rifle
Oil gas vent end is additionally provided with first pressure sensor, and/or, it is provided with the first temperature at the oil gas vent of the oil gas supply rifle
Degree probe；The first pressure sensor is used to detect the oil-air pressure P1 at oil gas vent end and is sent to controller, the control
Device processed by the oil pressure collected or air pressure P1 compared with the first preset pressure, when the oil pressure or air pressure P1 collected is less than the
During one preset pressure, the controller controls first shutoff valve to close；First temp probe is used to detect oil gas
The temperature T1 in exit is simultaneously sent to the controller, and the controller carries out the temperature T1 collected and the first preset temperature
Compare, when the temperature T1 collected is higher than the first preset temperature, the controller controls first shutoff valve to close.
Further, the burner also includes：Powdered biomass supplies rifle, and its one end is formed as powdering inlet, the other end
Extend to the burner outlet and be formed as dust outlet.
Further, the axis of the powdered biomass supply rifle overlaps with the axis of the First air passage.
Further, the axis of the axis and the First air passage of the powdered biomass supply rifle forms the second angle,
The angular range of second angle is 0 °~30 °.
Further, the burner also includes：Oxygen supplies rifle, and its one end is formed as oxygen intake, and the other end extends to
The burner outlet is simultaneously formed as oxygen outlet, for introducing oxygen into the burner hearth.
Further, the axis of oxygen supply rifle and the axis of the First air passage form the 3rd angle, and described the
The angular range of three angles is 0 °~30 °.
Further, the oxygen outlet end of the oxygen supply rifle is provided with the second shutoff valve；The oxygen supply rifle
Oxygen outlet end is additionally provided with second pressure sensor, and/or, it is provided with the second temperature at the oxygen outlet of the oxygen supply rifle
Degree probe；The second air pressure force snesor is used to detect the oxygen pressure P2 at oxygen outlet end and is sent to controller, described
Controller by the oxygen pressure P2 collected compared with the second preset pressure, when the oxygen pressure P2 collected exceed second
During pre-set pressure range, the controller controls second shutoff valve to close；The second temperature is popped one's head in for detecting oxygen
The temperature T2 of gas outlet is simultaneously sent to the controller, and the controller enters the temperature T2 collected with the second preset temperature
Row compares, and when the temperature T2 collected is higher than the second preset temperature, the controller controls second shutoff valve to close；
Oxygen content testing instrument is provided with the burner hearth, for detecting the oxygen content in the burner hearth, the oxygen content testing instrument will be examined
The oxygen-containing numerical quantity measured is sent to the controller, and the controller carries out the oxygen-containing numerical quantity collected and default value
Compare, when the oxygen-containing numerical quantity collected is higher than default value, the controller controls second shutoff valve to close；Institute
State and the 3rd temp probe is additionally provided with burner hearth, for detecting the flue-gas temperature T3 in the burner hearth, the 3rd temp probe
The flue-gas temperature T3 detected is sent to the controller, the controller presets the flue-gas temperature T3 collected with the 3rd
Temperature is compared, when the flue-gas temperature T3 collected is higher than three preset temperatures, described second section of the controller control
Only valve is closed.
Further, the First air passage, which is located at, is provided with First air in one end side wall on the outside of the furnace wall of the boiler and enters
Mouthful；The secondary air channel is set in outside the First air port of export of the First air passage.
(3) beneficial effect
Above-mentioned technical proposal of the present utility model has following beneficial technique effect：
The utility model can realize the transformation to existing large coal powder boiler of low cost, by existing generating plant pulverized coal boiler
Burner structure transformed, on the basis of rebuilding at low cost, it is possible to realize the fuel flexibility of Large-scale fire-electricity unit.
Rifle, powdered biomass supply rifle, pure oxygen supply rifle and corresponding multi fuel feeding pipe are supplied by increasing oil gas, so as to
Realize on the basis of the First air and Secondary Air of traditional coal powder fired boiler burner, realize the supply and burning of multi fuel.Pass through oil
Gas supply rifle, powdered biomass supply rifle, the flexible combination of oxygen supply rifle use, and realize real fuel flexibility, make
Pulverized-coal fired boiler can neatly combusting heavy oil, light oil, powdered biomass, natural gas, hydrogen, biogas etc. after transformation
Pluralities of fuel.The particularly introducing of biogas, hydrogen and pure oxygen, it is possible to achieve the underload of Large-scale fire-electricity unit boiler is steady
Combustion, so as to improve the load range of boiler at low load peak regulation, increases the peak modulation capacity of fired power generating unit, passes through annual participation power network
Depth peak regulation, power plant is set to obtain peak regulation subsidy.Meanwhile the utilization of the high-efficiency cleaning of biomass energy, domestic burning can be avoided
Pollute, increase farmers' income caused by the biomass such as stalk.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram that the burner that the utility model embodiment one provides is connected with burner hearth；
Fig. 2 is the burner internal structural representation that the utility model embodiment two provides；
Fig. 3 is the burner appearance schematic diagram that the utility model embodiment four provides；
Fig. 4 is the burner outlet end view that the utility model embodiment four provides.
Reference：
1st, First air passage, 1a, the first straight section, 1b, the first cone section, 1c, the second straight section, 1d, the 3rd straight section, 2, Secondary Air
Passage, 2a, the first straight section, 2b, the second straight section, 3, oil gas supply rifle, 4, powdered biomass supply rifle, 5, oxygen supply rifle, 6,
Fixed mount, 7, burner outlet, 8, fixed plate, 9, burner hearth.
Embodiment
To make the purpose of this utility model, technical scheme and advantage of greater clarity, with reference to embodiment
And referring to the drawings, the utility model is further described.It should be understood that these descriptions are merely illustrative, and do not really want
Limit the scope of the utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid not
Necessarily obscure concept of the present utility model.
Embodiment one
Fig. 1 is the internal structure schematic diagram that the burner that the utility model embodiment one provides is connected with burner hearth.
Fig. 1 is refer to, the burner includes：Burner outlet 7, First air passage 1, secondary air channel 2, oil gas supply rifle
3。
Burner outlet 7, it includes one or more fuel outlets, for being connected to the burner hearth 9 of boiler, by a kind of or
Pluralities of fuel, which is transported in burner hearth 9, to be burnt.Formed specifically, burner outlet 7 is collected by one or more fuel outlets,
Form a unified outlet, so as to the interface flexibility of burner hearth 9, burner hearth 9 herein, refer to the stove of large-scale power station pulverized-coal fired boiler
Thorax.
First air passage 1, First air entrance is provided with its one end side wall, and the other end extends to burner outlet 7 and shape
Exported as First air.First air passage 1 is used for the mixture of pulverized coal conveying and air.
Secondary air channel 2, Secondary Air entrance is provided with its one end side wall, and the other end extends to burner outlet 7 and shape
Exported as Secondary Air.Secondary air channel 2 is used for conveying the air of preheating.
Optionally, First air passage 1, which is located in one end side wall on the outside of the furnace wall of boiler, is provided with First air entrance.
Optionally, secondary air channel 2 is set in outside the First air port of export of First air passage 1, and the two of secondary air channel 2
Secondary wind outlet is connected with burner hearth 9.
Specifically, First air passage 1 include being sequentially connected the first straight section 1a, the first cone section 1b, the second straight section 1c and
3rd straight section 1d；First air entrance is set in the first straight section 1a side wall；3rd straight section 1d extends to burner outlet 7 and formed
Exported for First air；The first straight section 1a, the second straight section 1c of First air passage 1 and the 3rd straight section 1d area of section subtract successively
It is small.
Specifically, secondary air channel 2 includes the first straight section 2a and the second straight section 2b being sequentially connected；First straight section 2a side
Secondary Air entrance is set on wall；Second straight section 2b extends to burner outlet 7 and is formed as Secondary Air outlet；Secondary air channel 2
The first straight section 2a area of section be more than the second straight section 2b area of section.
Oil gas supplies rifle 3, and its one end is formed as oil gas entrance, and the other end extends to burner outlet 7 and is formed as oil gas
Outlet, liquid or gaseous fuel are conveyed for timesharing.
Optionally, liquid fuel includes but is not limited to heavy oil, light oil.
Optionally, gaseous fuel includes but is not limited to natural gas, biogas, hydrogen.
Optionally, the axis of oil gas supply rifle 3 forms the first angle with the axis of First air passage 1.
Optionally, the angular range of the first angle is 0 °~30 °.
Optionally, the section of oil gas supply rifle 3 includes but is not limited to circle.
Optionally, the diameter of section scope of oil gas supply rifle 3 is 1mm~200mm.
Due to easily producing tempering when liquid or gas fuel combustion, potential safety hazard be present, therefore, oil gas supply rifle 3
Oil gas vent end is provided with the first shutoff valve；The oil gas vent end of oil gas supply rifle 3 is additionally provided with first pressure sensor,
And/or it is provided with the first temp probe at the oil gas vent of oil gas supply rifle 3.When first pressure sensor detects that oil gas supplies
When being less than the first preset pressure to the oil pressure in rifle 3 or air pressure P1, or when the temperature T1 that the first temp probe detects is higher than
During the first preset temperature, then controller controls the first shutoff valve to close, and for avoiding the generation of back-fire trouble, improves equipment
Security.
First pressure sensor is used to detect the oil-air pressure P1 at oil gas vent end and is sent to controller, and controller will be adopted
The oil pressure or air pressure P1 collected is compared with the first preset pressure, when the oil pressure or air pressure P1 collected is less than the first default pressure
During power, controller controls the first shutoff valve to close.
First temp probe is used to detect the temperature T1 at oil gas vent and be sent to controller, and controller will collect
Temperature T1 is compared with the first preset temperature, when the temperature T1 collected is higher than the first preset temperature, controller control the
One shutoff valve is closed.
Optionally, the oil gas vent end of oil gas supply rifle 3 is provided with the first shutoff valve and first pressure sensor, when the
One pressure sensor detects oil pressure in oil gas supply rifle 3 or air pressure P1 when be less than the first preset pressure, then controller control
First shutoff valve is closed.
Optionally, the oil gas vent end of oil gas supply rifle 3 is provided with the first shutoff valve, and the oil gas of oil gas supply rifle 3 goes out
The first temp probe is provided with mouthful, when the temperature T1 that the first temp probe detects is higher than the first preset temperature, is then controlled
Device controls the first shutoff valve to close.
Optionally, the oil gas vent end of oil gas supply rifle 3 is provided with the first shutoff valve and first pressure sensor, oil gas
Supply and be additionally provided with the first temp probe at the oil gas vent of rifle 3, when first pressure sensor is detected in oil gas supply rifle 3
When oil pressure or air pressure P1 are less than the first preset pressure, or when the temperature T1 that the first temp probe detects is default higher than first warm
When spending, then controller controls the first shutoff valve to close.
In the present embodiment, burner also includes fixed mount 6, is arranged in secondary air channel 2, is welded with secondary air channel 2
Together.
Optionally, fixed mount 6 is arranged on the center of secondary air channel 2.
In the present embodiment, burner also includes fixed plate 8, is arranged on the right side of First air passage 1.
Optionally, fixed plate 8 is including but not limited to circular, square.
Specifically, one end that First air passage 1 is formed as First air outlet is fixed by fixed mount 6, First air is provided with
One end of entrance is fixed by fixed plate 8.The one end for being formed as oil gas entrance on oil gas supply rifle 3 is fixed by fixed plate 8, shape
It is located at the inner side of secondary air channel 2 as one end of oil gas vent, while positioned at the outside of fixed mount 6.Oil gas supplies rifle 3 in fixed plate
Distributing position on 8 can be according to being actually needed appropriate adjustment.
Embodiment two
Fig. 2 is the burner internal structural representation that the utility model embodiment two provides.
Fig. 2 is refer to, the burner of the present embodiment adds powdered biomass supply rifle 4 on the basis of embodiment one,
Its one end is formed as powdering inlet, and the other end extends to burner outlet 7 and is formed as dust outlet, for conveying biomass powder
Last fuel.Under the carrying of the air of primary air velocity of the powdered biomass in First air passage 1 in powdered biomass supply rifle 4
Burnt into burner hearth 9 so that traditional large thermal power plant can a large amount of regenerative resource such as biomass burning pulverized fuel.
Optionally, powdered biomass supply rifle 4 is arranged on the center of First air passage 1, i.e. powdered biomass supplies rifle 4
Axis overlaps with the axis of First air passage 1.
Optionally, the section of powdered biomass supply rifle 4 includes but is not limited to circle.
Optionally, the diameter of section scope of powdered biomass supply rifle 4 is 1cm~50cm.
Specifically, the axis of powdered biomass supply rifle 4 overlaps with the axis of First air passage 1, it is formed as powder and entered
One end of mouth is fixed by fixed plate 8, and the one end for being formed as dust outlet is located at the inner side of First air passage 1.Powdered biomass supplies
Can be according to being actually needed appropriate adjustment to distributing position of the rifle 4 in fixed plate 8.
In the present embodiment, add powdered biomass supply rifle 4, powdered biomass separately conveyed with coal dust, it is mutual it
Between be independent of each other, easily realize the flexible switching of fuel, fuel input is more convenient, and security is higher.
The structure and annexation of the miscellaneous part structure of burner and annexation and embodiment one in the present embodiment
It is identical, it will not be repeated here.
Embodiment three
The burner of the present embodiment and the difference of embodiment two are that powdered biomass supplies the set location of rifle 4
Difference, in the present embodiment, the axis of the axis and First air passage 1 of powdered biomass supply rifle 4 forms the second angle.
Optionally, the angular range of the second angle is 0 °~30 °.
The structure and annexation of the miscellaneous part structure of burner and annexation and embodiment two in the present embodiment
It is identical, it will not be repeated here.
Example IV
Fig. 3 is the burner appearance schematic diagram that the utility model embodiment four provides.
Fig. 4 is the burner outlet end view that the utility model embodiment four provides.
Fig. 3, Fig. 4 are refer to, the burner of the present embodiment adds oxygen supply rifle 5 on the basis of embodiment two, its
One end is formed as oxygen intake, and the other end extends to burner outlet 7 and is formed as oxygen outlet, for introducing oxygen into burner hearth
In 9, the oxygen of abundance is provided for Pulverized Coal, powdered biomass fuel, liquid fuel and gaseous fuel, improves the combustion of fuel
Burning rate, realize the oxygen-enriched combusting of pulverized-coal fired boiler so that the low load combustion of pulverized-coal fired boiler is more stable.
Optionally, the axis of oxygen supply rifle 5 forms the 3rd angle with the axis of First air passage 1.
Optionally, the angular range of the 3rd angle is 0 °~30 °.
Optionally, the section of oxygen supply rifle 5 includes but is not limited to circle.
Optionally, the diameter of section scope of oxygen supply rifle 5 is 1mm~200mm.
Because the supply and interruption of oxygen need to supply the gas pressure P2 and oxygen supply rifle 5 in rifle 5 according to oxygen
The temperature T2 in exit be controlled, therefore, the oxygen outlet end of oxygen supply rifle 5 is provided with the second shutoff valve；Oxygen
The oxygen outlet end of supply rifle 5 is additionally provided with second pressure sensor, and/or, it is provided with the oxygen outlet of oxygen supply rifle 5
Second temperature is popped one's head in.When the gas pressure P2 that the second pressure sensor at the oxygen outlet end of oxygen supply rifle 5 detects exceeds
During the second pre-set pressure range, or the temperature T2 that detects of second temperature probe at the oxygen outlet of oxygen supply rifle 5
During higher than the second preset temperature, then controller controls the second shutoff valve to close, to control the oxygen content and flue gas temperature in burner hearth 9
Spend T3.
Second pressure sensor is used to detect the gas pressure P2 at oxygen outlet end and is sent to controller, and controller will be adopted
The gas pressure P2 collected is compared with the second preset pressure, when the gas pressure P2 collected exceeds the second preset pressure model
When enclosing, controller controls the second shutoff valve to close.
Second temperature pops one's head in for detecting the temperature T2 at oxygen outlet and being sent to controller, and controller will collect
Temperature T2 is compared with the second preset temperature, when the temperature T2 collected is higher than the second preset temperature, controller control the
Two shutoff valves are closed.
Optionally, the oxygen outlet end of oxygen supply rifle 5 is provided with the second shutoff valve and second pressure sensor, works as oxygen
The gas pressure P2 that the second pressure sensor at the oxygen outlet end of gas supply rifle 5 detects exceeds the second pre-set pressure range
When, then controller controls the second shutoff valve to close.
Optionally, the oxygen outlet end of oxygen supply rifle 5 is provided with the second shutoff valve, and the oxygen of oxygen supply rifle 5 goes out
Second temperature probe is provided with mouthful, the temperature T2 that the second temperature probe at the oxygen outlet of oxygen supply rifle 5 detects
During higher than the second preset temperature, then controller controls the second shutoff valve to close.
Optionally, the oxygen outlet end of oxygen supply rifle 5 is provided with the second shutoff valve and second pressure sensor, oxygen
Supply and second temperature probe is additionally provided with the oxygen outlet of rifle 5, when the second pressure at the oxygen outlet end of oxygen supply rifle 5 passes
When the gas pressure P2 that sensor detects exceeds the second pre-set pressure range, or at the oxygen outlet of oxygen supply rifle 5
When the temperature T2 that second temperature probe detects is higher than the second preset temperature, then controller controls the second shutoff valve to close.
Further, since the supply and interruption of oxygen also need to be controlled according to the oxygen content in burner hearth 9 and flue-gas temperature T3
System, therefore, be arranged on oxygen supply rifle 5 oxygen outlet end the second shutoff valve will also according to the oxygen content in burner hearth 9 and
Flue-gas temperature T3 is controlled.When the oxygen-containing numerical quantity or calculated value that oxygen content testing instrument detects in burner hearth 9 are higher than default value
When, or when the 3rd temp probe in burner hearth 9 detects that flue-gas temperature T3 is higher than three preset temperatures, then controller controls
Second shutoff valve is closed, to control the oxygen content and flue-gas temperature T3 in burner hearth 9.
Oxygen content testing instrument is provided with burner hearth 9, for detecting the oxygen content in burner hearth 9, oxygen content testing instrument will detect
To oxygen-containing numerical quantity be sent to controller, controller by the oxygen-containing numerical quantity collected compared with default value, when adopting
When the oxygen-containing numerical quantity collected is higher than default value, controller controls the second shutoff valve to close.
The 3rd temp probe is additionally provided with burner hearth 9, for detecting the flue-gas temperature T3 in burner hearth 9, the 3rd temp probe
The flue-gas temperature T3 detected is sent to controller, controller carries out the flue-gas temperature T3 collected and the 3rd preset temperature
Compare, when the flue-gas temperature T3 collected is higher than three preset temperatures, controller controls the second shutoff valve to close.
The specific control logic of second shutoff valve can suitably be adjusted according to being actually needed.
Specifically, one end that oxygen intake is formed on oxygen supply rifle 5 is fixed by fixed plate 8, be formed as oxygen outlet
One end be located at the inner side of secondary air channel 2, while positioned at the outside of fixed mount 6.Oxygen supplies distribution position of the rifle 5 in fixed plate 8
Putting can be according to being actually needed appropriate adjustment.
The structure and annexation of the miscellaneous part structure of burner and annexation and embodiment two in the present embodiment
It is identical, it will not be repeated here.
Embodiment five
The burner of the present embodiment is on the basis of embodiment three, adds oxygen supply rifle 5, oxygen in the present embodiment
The set location for supplying rifle 5 is identical with example IV.
The structure and annexation of the miscellaneous part structure of burner and annexation and embodiment three in the present embodiment
It is identical, it will not be repeated here.
The combination of oil gas supply rifle 3, powdered biomass supply rifle 4 and oxygen supply rifle 5 in the utility model
Including but not limited to above-mentioned embodiment, oil gas supply rifle 3, powdered biomass supply rifle 4 and oxygen supply rifle 5 can be with roots
According to needing otherwise to be combined use, to realize the supply of multi fuel and burning.Oil gas supply rifle 3, powdered biomass
Supply rifle 4 and oxygen supply rifle 5 connects with corresponding feeding pipe respectively, and be provided with control valve or flowmeter, can be right
The supply of pluralities of fuel and oxygen is interrupted, to realize the increase and decrease of supply fuel quantity and amount of oxygen, so as to realize fire coal
The sufficient fuel flexibility of thermal power plant.
The utility model is intended to protect a kind of burner, applied in large-scale power station pulverized-coal fired boiler, being existing large-scale
It is improved on the architecture basics of thermal power station's coal burner, in the First air of traditional coal powder fired boiler burner and the base of Secondary Air
On plinth, rifle, powdered biomass supply rifle, oxygen supply rifle and corresponding pipeline are supplied by increasing oil gas, is realized to existing
The rebuilding at low cost of large coal powder boiler so that pulverized-coal fired boiler can neatly combusting heavy oil, light oil, biomass after transformation
The pluralities of fuels such as powder, natural gas, hydrogen, biogas.Rifle is supplied by oil gas, powdered biomass supplies rifle, oxygen supplies
The flexible combination of rifle uses, and realizes real fuel flexibility, real fuel flexibility described herein, refers to that boiler exists
Supply and price situation of the different periods according to fuel, it can neatly adopt different fuel and carry out combustion power generation.Using this
The burner of utility model so that the pulverized-coal fired boiler of traditional large thermal power plant can have other fuel that burn, particularly can be again
The function of raw energy fuel (powdered biomass or biogas or hydrogen), can reduce the carbon intensity of fired power generating unit, make
Power plant can enjoy the rate for incorporation into the power network of department's biomass power generation, increase power plant income, can also make power plant in following carbon tax and green
The color certificate compulsory execution stage is on a good wicket in the competition of electricity market, and it utilizes regenerative resource combustion power generation not only
Rate for incorporation into the power network is high, and can avoid being imposed the carbon tax of great number, if generating power with biomass combustion future can apply for green electricity
Strong evidence book, then thermal power plant's future can also be by the extra notable benefits of sale green electric power supply certificate acquisition.Particularly biogas,
The introducing of hydrogen and pure oxygen, it is possible to achieve the low-load combustion-stabilizing of Large-scale fire-electricity unit boiler, adjusted so as to improve boiler at low load
The load range at peak, the peak modulation capacity of fired power generating unit is increased, by the annual depth peak regulation for participating in power network, power plant is obtained peak regulation
Subsidy.Meanwhile the utilization of the high-efficiency cleaning of biomass energy, it can avoid polluting caused by the biomass such as domestic crop straw burning,
Increase farmers' income.
The scheme that the utility model is implemented at present is transformed for traditional generating plant pulverized coal boiler, and future can also pin
The transformation of multi fuel burner is carried out to coal dust heating boiler, including a large amount of gas burners that presently, there are are it is also contemplated that enter
The transformation of the row addition multi fuel such as pure oxygen and biogas or fuel lance, these reforming modes belong to the protection model of this patent
Enclose.
It should be appreciated that above-mentioned embodiment of the present utility model is used only for exemplary illustration or explains this reality
With new principle, without forming to limitation of the present utility model.Therefore, without departing from spirit and scope of the present utility model
In the case of any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the utility model.In addition,
The appended claims for the utility model are intended to fall into scope and border or this scope and border
Whole in equivalents changes and modifications example.
Claims (10)
- A kind of 1. burner, it is characterised in that including：Burner outlet (7), it includes one or more fuel outlets, for being connected to the burner hearth (9) of boiler, by a kind of or Pluralities of fuel, which is transported in burner hearth (9), to be burnt；First air passage (1), First air entrance is provided with its one end side wall, the other end extends to the burner outlet (7) And be formed as First air outlet；Secondary air channel (2), Secondary Air entrance is provided with its one end side wall, the other end extends to the burner outlet (7) And be formed as Secondary Air outlet；Oil gas supply rifle (3), its one end are formed as oil gas entrance, and the other end extends to the burner outlet (7) and is formed as Oil gas vent, liquid or gaseous fuel are conveyed for timesharing.
- 2. burner according to claim 1, it is characterised in thatThe axis of the oil gas supply rifle (3) forms the first angle, first angle with the axis of the First air passage (1) Angular range be 0 °~30 °.
- 3. burner according to claim 1, it is characterised in thatThe oil gas vent end of the oil gas supply rifle (3) is provided with the first shutoff valve；The oil gas vent end of the oil gas supply rifle (3) is additionally provided with first pressure sensor, and/or, the oil gas supplies rifle (3) the first temp probe is provided with oil gas vent；The first pressure sensor is used to detect the oil-air pressure P1 at oil gas vent end and is sent to controller, the controller By the oil pressure collected or air pressure P1 compared with the first preset pressure, when the oil pressure or air pressure P1 collected is pre- less than first If during pressure, the controller controls first shutoff valve to close；First temp probe is used to detect the temperature T1 at oil gas vent and is sent to the controller, and the controller will The temperature T1 collected is described when the temperature T1 collected is higher than the first preset temperature compared with the first preset temperature Controller controls first shutoff valve to close.
- 4. burner according to claim 1, it is characterised in that also include：Powdered biomass supply rifle (4), its one end are formed as powdering inlet, and the other end extends to the burner outlet (7) simultaneously Be formed as dust outlet.
- 5. burner according to claim 4, it is characterised in thatThe axis of the powdered biomass supply rifle (4) overlaps with the axis of the First air passage (1).
- 6. burner according to claim 4, it is characterised in thatThe axis of powdered biomass supply rifle (4) and the axis of the First air passage (1) form the second angle, and described the The angular range of two angles is 0 °~30 °.
- 7. burner according to claim 4, it is characterised in that also include：Oxygen supply rifle (5), its one end are formed as oxygen intake, and the other end extends to the burner outlet (7) and is formed as Oxygen outlet, for introducing oxygen into the burner hearth (9).
- 8. burner according to claim 7, it is characterised in thatThe axis of the oxygen supply rifle (5) forms the 3rd angle, the 3rd angle with the axis of the First air passage (1) Angular range be 0 °~30 °.
- 9. burner according to claim 7, it is characterised in thatThe oxygen outlet end of the oxygen supply rifle (5) is provided with the second shutoff valve；The oxygen outlet end of the oxygen supply rifle (5) is additionally provided with second pressure sensor, and/or, the oxygen supplies rifle (5) second temperature probe is provided with oxygen outlet；The second pressure sensor is used to detect the oxygen pressure P2 at oxygen outlet end and is sent to controller, the controller By the oxygen pressure P2 collected compared with the second preset pressure, when the oxygen pressure P2 collected is beyond the second default pressure During power scope, the controller controls second shutoff valve to close；The second temperature is popped one's head in for detecting the temperature T2 at oxygen outlet and being sent to the controller, and the controller will The temperature T2 collected is described when the temperature T2 collected is higher than the second preset temperature compared with the second preset temperature Controller controls second shutoff valve to close；Oxygen content testing instrument is provided with the burner hearth (9), for detecting the oxygen content in the burner hearth (9), the oxygen content The oxygen-containing numerical quantity detected is sent to the controller by detector, and the controller is by the oxygen-containing numerical quantity collected and in advance If numerical value is compared, when the oxygen-containing numerical quantity collected is higher than default value, controller control second cut-off Valve is closed；The 3rd temp probe is additionally provided with the burner hearth (9), it is described for detecting the flue-gas temperature T3 in the burner hearth (9) The flue-gas temperature T3 detected is sent to the controller, the flue-gas temperature that the controller will collect by the 3rd temp probe T3 is compared with the 3rd preset temperature, when the flue-gas temperature T3 collected is higher than three preset temperatures, the controller control Second shutoff valve is made to close.
- 10. according to the burner any one of claim 1-9, it is characterised in thatThe First air passage (1), which is located in one end side wall on the outside of the furnace wall of the boiler, is provided with First air entrance；The secondary air channel (2) is set in outside the First air port of export of the First air passage (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721131975.3U CN207214050U (en) | 2017-09-05 | 2017-09-05 | A kind of burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721131975.3U CN207214050U (en) | 2017-09-05 | 2017-09-05 | A kind of burner |
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| Publication Number | Publication Date |
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| CN207214050U true CN207214050U (en) | 2018-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424961A (en) * | 2017-09-05 | 2019-03-05 | 赫普科技发展（北京）有限公司 | A kind of burner |
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- 2017-09-05 CN CN201721131975.3U patent/CN207214050U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424961A (en) * | 2017-09-05 | 2019-03-05 | 赫普科技发展（北京）有限公司 | A kind of burner |
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Effective date of registration: 20180731 Address after: 100176 Beijing Beijing economic and Technological Development Zone, Chuang Chuang thirteen Street 18 building 12, 5 floors 503 rooms. Patentee after: Beijing HEMPEL Electric Power Technology Co., Ltd. Address before: 100176 No. 12 building, 18 Chuang thirteen street, Daxing District economic and Technological Development Zone, Beijing Patentee before: HEMPEL technology development (Beijing) Co., Ltd. |
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