CN106196012A - Biomass combustion devices and methods therefor with denitrification functions - Google Patents
Biomass combustion devices and methods therefor with denitrification functions Download PDFInfo
- Publication number
- CN106196012A CN106196012A CN201610555698.2A CN201610555698A CN106196012A CN 106196012 A CN106196012 A CN 106196012A CN 201610555698 A CN201610555698 A CN 201610555698A CN 106196012 A CN106196012 A CN 106196012A
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- Prior art keywords
- denitrifier
- biomass
- biomass stove
- stove
- cooling air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J7/00—Arrangement of devices for supplying chemicals to fire
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses the biomass combustion devices and methods therefor of a kind of band denitrification functions.This burner includes biomass stove and is arranged at the denitrogenation shower nozzle at biomass stove top.It is internally provided with reaction chamber and deflector.The shower nozzle of the spray of the removing nitrogen oxides that the present invention is carried by burner while biomass combustion combines deflector and reaction chamber, ideally solve the problem that in biomass combustion device exhaust, amount of nitrogen oxides exceeds standard, and owing to there being the denitrifier amount control system of intelligence, do not result in denitrifier excess and waste.There is low cost, simple to operate, the distinguishing feature such as easy to use.
Description
Technical field
The present invention relates to biomass combustion device, the biomass combustion device of a kind of band denitrification functions and side thereof
Method.
Background technology
Biomass fuel by universally acknowledged for be a kind of reproducible carbon emission be the cleaning fuel of zero.But no matter it adopts
By which kind of mode burn and all can produce the discharge of often mark side's flue gas nitrogen oxides more than 150mg.Up to the present arcola is very
Rare denitrogenation, the especially arcola of biomass.Even if having also is employing SCR mode in boiler furnace or tail flue gas,
Or SNCR mode carrys out denitrogenation.But use current method relatively costly, for civilian miniature boiler, it is impossible to extensive
Promote.And now with the implementation of new national standard, the nitrogen oxides in effluent content of arcola starts to be severely restricted.Cause
This, await developing the biomass combustion device of a kind of high efficiency, low cost.
Summary of the invention
It is an object of the invention to solve the problem that in prior art, biomass combustion device nitrogen oxides in effluent exceeds standard,
And the biomass combustion device of a kind of band denitrification functions is provided, during biomass combustion gasifies, directly automatically spray into denitrogenation
Agent, by removal of nitrogen oxide.
With the biomass combustion device of denitrification functions, including biomass stove and the denitrogenation spray being arranged at biomass stove top
Head, described denitrogenation shower nozzle includes denitrifier entrance, cooling air intake, atomizing air inlets, denitrifier conveying pipe, denitrogenation
Agent fluid jetting head, denitrifier atomized air tube, denitrifier hybrid nozzle, cooling air nozzle, nitrogen oxides variator, cooling sky
Letter shoot and temperature transmitter；The denitrifier entrance that front end is band control system of described denitrifier conveying pipe, described
Control system be connected with nitrogen oxides variator and temperature transmitter respectively, for feedback control denitrifier input quantity；Denitrogenation
Bottom agent conveying pipe, denitrifier fluid jetting head is set；Denitrifier conveying pipe is outer is nested with denitrifier atomized air tube and cooling successively
Air delivery pipe；Denitrifier atomized air tube top is atomizing air inlets, and bottom is provided with denitrifier hybrid nozzle；Cooling sky
The top of letter shoot is cooling air intake, and bottom is cooling air nozzle；Described denitrifier conveying pipe, denitrifier are atomized
The bottom of air hose and cooling air delivery pipe is all stretched in the inner chamber of biomass stove.In the present invention denitrifier can be carbamide,
Ammonia or other denitrifiers.
As preferably, described biomass stove includes biomass stove body, denitrifier reaction chamber, heat energy delivery outlet, biology
Matter combustor, biomass fuel entrance, the big fire door of biomass stove, biomass stove high temperature fire grate, the little fire door of biomass stove and biology
Matter stove combustor deflector；The inside burner hearth of described biomass stove body is provided with denitrifier reaction chamber and biology from top to bottom
Matter combustor, the side of biomass stove body is provided with biomass fuel entrance, and opposite side is provided with heat energy delivery outlet, burner hearth inner bottom part
It is provided with biomass stove high temperature fire grate, the sidewall above and below biomass stove high temperature fire grate is respectively equipped with the big stove of biomass stove
Door and the little fire door of biomass stove, inside burner hearth, the front end at heat energy delivery outlet arranges biomass stove combustor deflector.
Further, described biomass stove combustor deflector is folded upward at, for extending flame within burner hearth
Stroke.Biomass stove combustor deflector overhead height can be set to be not less than heat energy delivery outlet top, thus, biomass combustion
The flame of the generation of room need to can rotate into heat energy delivery outlet behind biomass stove combustor deflector top.The biggest
Extend greatly the stroke of flame, add the time of contact of itself and denitrifier, improve denitrification effect.
As preferably, described nitrogen oxides variator is arranged at the exhanst gas outlet of described biomass stove, with the most anti-
Mirroring the nitrous oxides concentration of mouth, the dosage for denitrifier controls to provide foundation.
As preferably, described temperature transmitter is arranged at cooling air delivery pipe and stretches into outside biomass stove burner hearth part
On wall.
As preferably, described denitrogenation shower nozzle can depart from biomass stove and be used alone, de-directly to spray to the burner hearth of boiler
Nitrogen agent.
Another object of the present invention is to provide the biomass fuel firing method of a kind of band denitrification functions using described device,
Step is as follows:
Biomass are added to biomass combustion room by biomass fuel entrance, by denitrifier conveying pipe input liquid
The denitrifier of state；Air is passed through from atomizing air inlets, after making the denitrifier sprayed at denitrifier fluid jetting head be atomized
Spray at denitrifier hybrid nozzle, enter denitrifier reaction chamber；The flame produced in biomass combustion room fires at biomass stove
Burn under the drain of room deflector, mix with the denitrifier after atomization and realize denitrogenation, and export from heat energy delivery outlet.
The present invention compared with prior art has the beneficial effect that
1) denitrogenation is integrated with combustion gasification；Equipment manufacturing cost is greatly reduced, allows the arcola having a large capacity and a wide range realize de-
Nitrogen is possibly realized；
2) brand-new input denitrogenation liquor flow is controlled according to temperature, it is possible to the consumption of denitrifier is greatly decreased, significantly drops
Low use cost；
3) brand-new according to denitrification effect Based Intelligent Control dosage so that denitrification effect reaches optimal, reduce the escaping of ammonia, it is thus achieved that
More preferably environment protecting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the biomass combustion device of a kind of band denitrification functions.
In figure: denitrifier entrance 1, cooling air intake 2, atomizing air inlets 3, denitrifier conveying pipe 4, denitrifier liquid
Shower nozzle 5, denitrifier atomized air tube 6, denitrifier hybrid nozzle 7, cooling air nozzle 8, nitrogen oxides variator 9, cooling sky
Letter shoot 10, denitrifier shower nozzle adpting flange 11, biomass stove body 12, denitrifier reaction chamber 13, heat energy delivery outlet 14, life
Thing is little at combustor 15, biomass fuel entrance 16, the big fire door of biomass stove 17, biomass stove high temperature fire grate 18, biomass stove
Fire door 19, biomass stove combustor deflector 20 and temperature transmitter 21.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, the biomass combustion device of a kind of band denitrification functions, including biomass stove be arranged at biomass stove
The denitrogenation shower nozzle at top, described denitrogenation shower nozzle includes denitrifier entrance 1, cooling air intake 2, atomizing air inlets 3, takes off
Nitrogen agent conveying pipe 4, denitrifier fluid jetting head 5, denitrifier atomized air tube 6, denitrifier hybrid nozzle 7, cooling air nozzle 8,
Nitrogen oxides variator 9, cooling air delivery pipe 10 and temperature transmitter 21；The front end of described denitrifier conveying pipe 4 is band
The denitrifier entrance 1 of control system, described control system respectively with nitrogen oxides variator 9 and temperature transmitter 21 phase
Even, for feedback control denitrifier input quantity.The work of denitrifier entrance 1 is to return feedback signal according to nitrogen oxides transmitter 9,
Carry out Based Intelligent Control.Nitrogen oxides variator 9 is arranged at the exhanst gas outlet of described biomass stove.Temperature transmitter 21 is arranged at
Cooling air delivery pipe 10 stretches on the outer wall of biomass stove burner hearth part.Cooling air delivery pipe 10 is made up of heat-barrier material,
Its sidewall contacts fixing with biomass stove, and top arranges denitrifier shower nozzle adpting flange 11, for connecting remaining of denitrogenation shower nozzle
Part.
Bottom denitrifier conveying pipe 4, denitrifier fluid jetting head 5 is set；Denitrifier conveying pipe 4 is outer is nested with denitrifier successively
Atomized air tube 6 and cooling air delivery pipe 10；Denitrifier atomized air tube 6 top is atomizing air inlets 3, and bottom is provided with
Denitrifier hybrid nozzle 7；The top of cooling air delivery pipe 10 is cooling air intake 2, and bottom is cooling air nozzle 8；Institute
The interior of biomass stove is all stretched in the bottom of denitrifier conveying pipe 4, denitrifier atomized air tube 6 and the cooling air delivery pipe 10 stated
In chamber.Described biomass stove includes biomass stove body 12, denitrifier reaction chamber 13, heat energy delivery outlet 14, biomass combustion
Room 15, biomass fuel entrance 16, the big fire door of biomass stove 17, biomass stove high temperature fire grate 18, biomass stove little fire door 19 and
Biomass stove combustor deflector 20；The inside burner hearth of described biomass stove body 12 is provided with denitrifier reaction from top to bottom
Chamber 13 and biomass combustion room 15, the side of biomass stove body 12 is provided with biomass fuel entrance 16, and opposite side is provided with heat energy
Delivery outlet 14, burner hearth inner bottom part is provided with biomass stove high temperature fire grate 18, the side above and below biomass stove high temperature fire grate 18
Being respectively equipped with the big fire door of biomass stove 17 and the little fire door of biomass stove 19 on wall, inside burner hearth, the front end at heat energy delivery outlet 14 sets
Put biomass stove combustor deflector 20.Described biomass stove combustor deflector 20 is folded upward at, and is used for extending in burner hearth
The stroke of the flame in portion.
Above-mentioned denitrogenation shower nozzle can depart from biomass stove and be used alone, it is not necessary in biomass stove, it is also possible to directly to
The burner hearth spray denitrifier of other boilers.
Combustion gasification is successfully combined as a whole by the present invention with denitrogenation, by the effect of deflector, makes limited burner hearth
Volume is fully utilized, and is equipped with nitrogen oxides transmitter, and the effect of denitrogenation returns to the denitrogenation of band Based Intelligent Control in time
Agent inlet part, adjusts denitrifier in time to amount so that reach optimum efficiency.Reach to reduce the usage amount of denitrogenation liquor, reduce
Use cost.When fire box temperature is less than the temperature of generation nitrogen oxides, cutting off the input of denitrogenation liquor, this new way is
Skill upgrading to current denitrogenation industry is a big new measure.
The biomass fuel firing method of a kind of band denitrification functions using device described in Fig. 1, processes as follows:
Biomass are added to biomass combustion room 15 by biomass fuel entrance 16, carries pipe 4 by denitrifier
The urea liquid of input liquid is as denitrifier；Air is passed through from atomizing air inlets 3, makes at denitrifier fluid jetting head 5
The denitrifier of ejection sprays after being atomized at denitrifier hybrid nozzle 7, enters denitrifier reaction chamber 13；Biomass combustion room 15
The flame of middle generation, under the drain of biomass stove combustor deflector 20, mixes with the denitrifier after atomization and realizes denitrogenation, and
Export from heat energy delivery outlet 14.The operating temperature of burner hearth is 950 DEG C, after temperature transmitter 21 is set below 700 DEG C, and feedback control
Control device on denitrifier entrance 1 processed so that it is do not input denitrifier.
After said method is tested, according to environmental administration's testing result, often amount of nitrogen oxides in mark side's exiting flue gas
For 128mg, less than national standard 150mg.As can be seen here, assembly of the invention associated methods, not only can be greatly reduced
Cost, returns and can control nitrous oxides concentration in exiting flue gas easily.The enforcement of the present invention will be the denitrogenation of arcola
Open up a new way, be one to innovate greatly.Because no matter current biomass burner uses the side of that low nitrogen burning
Formula, is all unable to reach often mark side's flue gas standard less than 150mg.By the enforcement of these apparatus and method, it becomes possible to be easily reached
This standard.
Embodiment described above is the one preferably scheme of the present invention, and so it is not intended to limiting the invention.Have
Close the those of ordinary skill of technical field, without departing from the spirit and scope of the present invention, it is also possible to make various change
Change and modification.The technical scheme that the most all modes taking equivalent or equivalent transformation are obtained, as by band denitrification functions
Biomass combustion device is the most overall to be used, or decomposition part uses, all in the scope of protection of the invention.
Claims (7)
1. the biomass combustion device of a band denitrification functions, it is characterised in that include biomass stove and be arranged at biomass stove
The denitrogenation shower nozzle at top, described denitrogenation shower nozzle includes denitrifier entrance (1), cooling air intake (2), atomizing air inlets
(3), denitrifier conveying pipe (4), denitrifier fluid jetting head (5), denitrifier atomized air tube (6), denitrifier hybrid nozzle (7),
Cooling air nozzle (8), nitrogen oxides variator (9), cooling air delivery pipe (10) and temperature transmitter (21)；Described is de-
Denitrifier entrance (1) that front end is band control system of nitrogen agent conveying pipe (4), described control system respectively with nitrogen oxides
Variator (9) is connected with temperature transmitter (21), for feedback control denitrifier input quantity；Denitrifier conveying pipe (4) bottom sets
Put denitrifier fluid jetting head (5)；Denitrifier conveying pipe (4) is nested with denitrifier atomized air tube (6) and cooling air the most successively
Conveying pipe (10)；Denitrifier atomized air tube (6) top is atomizing air inlets (3), and bottom is provided with denitrifier hybrid nozzle
(7)；The top of cooling air delivery pipe (10) is cooling air intake (2), and bottom is cooling air nozzle (8)；Described is de-
The interior of biomass stove is all stretched in the bottom of nitrogen agent conveying pipe (4), denitrifier atomized air tube (6) and cooling air delivery pipe (10)
In chamber.
2. the biomass combustion device of band denitrification functions as claimed in claim 1, it is characterised in that described biomass stove bag
Include biomass stove body (12), denitrifier reaction chamber (13), heat energy delivery outlet (14), biomass combustion room (15), biomass fuel
Material entrance (16), the big fire door of biomass stove (17), biomass stove high temperature fire grate (18), the little fire door of biomass stove (19) and biomass
Stove combustor deflector (20)；The inside burner hearth of described biomass stove body (12) is provided with denitrifier reaction chamber from top to bottom
(13) and biomass combustion room (15), the side of biomass stove body (12) is provided with biomass fuel entrance (16), and opposite side sets
Having heat energy delivery outlet (14), burner hearth inner bottom part is provided with biomass stove high temperature fire grate (18), biomass stove high temperature fire grate (18) upper
It is respectively equipped with the big fire door of biomass stove (17) and the little fire door of biomass stove (19), at heat energy inside burner hearth on the sidewall of side and lower section
The front end of delivery outlet (14) arranges biomass stove combustor deflector (20).
3. the biomass combustion device of band denitrification functions as claimed in claim 2, it is characterised in that described biomass stove combustion
Burn room deflector (20) to be folded upward at, for extending the stroke of the flame within burner hearth.
4. the biomass combustion device of band denitrification functions as claimed in claim 1, it is characterised in that described nitrogen oxides becomes
Speed device (9) is arranged at the exhanst gas outlet of described biomass stove.
5. the biomass combustion device of band denitrification functions as claimed in claim 1, it is characterised in that described temperature transmitter
(21) it is arranged at cooling air delivery pipe (10) to stretch on the outer wall of biomass stove burner hearth part.
6. the biomass combustion device of band denitrification functions as claimed in claim 1, it is characterised in that described denitrogenation shower nozzle can
Depart from biomass stove to be used alone, directly to spray denitrifier to the burner hearth of boiler.
7. the biomass fuel firing method of the band denitrification functions using device described in claim 3, it is characterised in that step is such as
Under:
Biomass are added in biomass combustion room (15) by biomass fuel entrance (16), by denitrifier conveying pipe
(4) denitrifier of liquid is inputted；Air is passed through from atomizing air inlets (3), makes ejection from denitrifier fluid jetting head (5)
Denitrifier sprays after being atomized from denitrifier hybrid nozzle (7), enters denitrifier reaction chamber (13)；Biomass combustion room (15)
The flame of middle generation, under the drain of biomass stove combustor deflector (20), mixes with the denitrifier after atomization and realizes denitrogenation,
And export from heat energy delivery outlet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610555698.2A CN106196012A (en) | 2016-07-12 | 2016-07-12 | Biomass combustion devices and methods therefor with denitrification functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610555698.2A CN106196012A (en) | 2016-07-12 | 2016-07-12 | Biomass combustion devices and methods therefor with denitrification functions |
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| Publication Number | Publication Date |
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| CN106196012A true CN106196012A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610555698.2A Pending CN106196012A (en) | 2016-07-12 | 2016-07-12 | Biomass combustion devices and methods therefor with denitrification functions |
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