CN208975516U - A kind of denitrification apparatus of suitable biomass boiler - Google Patents
A kind of denitrification apparatus of suitable biomass boiler Download PDFInfo
- Publication number
- CN208975516U CN208975516U CN201821021385.XU CN201821021385U CN208975516U CN 208975516 U CN208975516 U CN 208975516U CN 201821021385 U CN201821021385 U CN 201821021385U CN 208975516 U CN208975516 U CN 208975516U
- Authority
- CN
- China
- Prior art keywords
- biomass
- spray gun
- burner hearth
- denitration
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Combustion Of Fluid Fuel (AREA)
Abstract
A kind of denitrification apparatus of suitable biomass boiler, the utility model includes biomass denitration spray gun and the preparation of matched reducing agent and transportation system, distribution system, atomizing air system, cooling air system, reducing agent is injected directly into burner hearth central area by the way that the denitration spray gun goed deep into burner hearth is arranged, denitration reaction region can be expanded, simultaneously because of the presence of cooling wind, burner hearth center anaerobic condition can be alleviated, boiler combustion efficiency is improved, the utility model has many advantages, such as to be transformed and arrange that convenient, denitration efficiency is high, helps to improve boiler combustion efficiency.
Description
Technical field
The utility model relates to environmental technology field, in particular to a kind of denitrification apparatus of suitable biomass boiler.
Background technique
Biomass boiler is the boiler for making fuel with biomass energy.Waste in agricultural production process, such as crops
Stalk (corn stalk, sorghum stalks, wheat straw, straw, beanstalk and cotton stalk etc.), waste (rice husk) of agricultural machining industry etc. all can be used as
The fuel of biomass boiler, biomass boiler discharge sulfur dioxide in flue gas, amount of nitrogen oxides are lower, therefore and coal-burning boiler
It compares, biomass energy feature is reproducibility, low pollution, widely distributed property, total amount very abundant.But as country is to pot
Kiln gas discharges the raising of environmental protection standard, and biomass boiler has been not suitable with new environmental requirement.Existing various regions have required biomass
The discharge standard of boiler smoke is executed by GB 13223-2011 " fossil-fuel power plant atmospheric pollutant emission standard ", i.e. dirt, titanium dioxide
Sulphur, nitrogen oxides emission limit be 30,200,200mg/m3, wherein key area presses 20,50,100mg/m3It executes.Through to life
The investigation of substance boiler smoke, test, analysis, biomass boiler flue gas have following features: 1. fire box temperature difference is big, biomass pot
Furnace mainly has grate furnace and Circulation fluidized-bed furnace, and every kind of type of furnace is divided into medium temperature and medium pressure furnace, secondary high temperature sub-high pressure furnace, high temperature and pressure again
Furnace, fire box temperature are respectively 700~760 DEG C, 880~950 DEG C, 850~1100 DEG C；2. sulfur dioxide, nitrous oxides concentration be low,
Fluctuation is big, and sulfur dioxide, nitrogen oxide mass concentration are in 100~250mg/m when pure biomass of burning3Fluctuation, as mixed in fuel
Parasitic mode plate, timber, bark, sulfur dioxide in flue gas, nitrogen oxide mass concentration are in 250~600mg/m3Fluctuation, instantaneously may be used
Up to 1g/m3More than.
SNCR belongs to selective non-catalytic reduction technology, and SNCR technology is suitable for furnace outlet gas temperature and meets 800~1100
DEG C boiler, denitration efficiency is lower when being lower than this temperature, and ammonia and flue gas mix effect and have a significant impact denitration efficiency (as revolved
It is relatively good that wind inlet region mixes effect).It such as mixes that insufficient, the reaction time is inadequate, to reach identical denitration efficiency, will increase
Operating cost, while there is also excessive problems for tail gas the escaping of ammonia.SO in another biomass boiler flue gas3Content is often higher, 280
The problems such as DEG C low-temperature space equipment below, there are sulfate blockings, corrosion.SNCR denitration efficiency also with cigarette in nitrogen oxides
Initial concentration is related, and biomass boiler SNCR denitration efficiency is 20%~50%.
Currently, biomass boiler denitration is generally carried out using SNCR+SCR technology, however, as CFB boiler capacity increases,
Section of burner hearth increases therewith, and distance of the SNCR denitrification spray gun of surrounding side wall arrangement apart from burner hearth center is up to several meters to more than ten
Rice makes reducing agent be difficult to reach burner hearth central area by spraying and spreading, reduces conversion zone, so as to cause denitration efficiency drop
It is low.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of suitable biomass boilers
Denitrification apparatus, have many advantages, such as to be transformed and arrange that convenient, denitration efficiency is high, help to improve boiler combustion efficiency.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of denitrification apparatus of suitable biomass boiler, including biomass burner hearth 3 and the life being arranged in biomass burner hearth 3
Substance denitration spray gun 4 and the preparation of matched reducing agent and transportation system, distribution system, atomizing air system, cooling air system
System；3 lower layer of biomass burner hearth is provided with fluidization hood 2, and 3 bottom of biomass burner hearth is provided with air compartment 1, the biology
In in burner hearth 3, the other end of biomass denitration spray gun 4 is placed in inside the air compartment 1 of 3 lower section of burner hearth 4 arrangement of nozzles of matter denitration spray gun
Or it is external；
Reducing agent preparation and transportation system, for providing reducing agent for biomass denitration spray gun 4；
Atomizing air system, for providing atomizing air gas source for biomass denitration spray gun 4；
Cooling air system, for providing cooling air wind regime for biomass denitration spray gun 4；
Distribution system, for being allocated to the gas inside biomass denitration spray gun 4.
The biomass denitration spray gun 4 is made of atomizing air casing 5, spray gun core pipe 6, cooling air casing 7, spray gun
Atomizing air casing 5 and cooling air casing 7 are socketed in core pipe 6.
4 nozzle of biomass denitration spray gun is 0 meter to 10 meters away from 2 height of fluidization hood, has multiple apertures at the top of spray gun 4
Surrounding arrangement realizes surrounding atomization.
The cooling air wind regime of 4 cooling air system of biomass denitration spray gun is First air or Secondary Air.
The atomizing air gas source of 4 atomizing air system of biomass denitration spray gun can be mentioned by roots blower or air compressor machine
For.
One or more sets are arranged in each Boiler Furnace in the biomass denitration spray gun 4, when more sets are set, each spray gun
It is highly equal or unequal, it is distributed and is arranged according to in-furnace temperature.
7 side towards the fire of cooling air casing is laid with abrasion-proof and refractory pouring material.
The reducing agent preparation and transportation system include reducing agent device 10, and the reducing agent device 10 passes through pump 10
It is connected with flowmeter 8 with biomass denitration spray gun 4.
The utility model has the beneficial effects that
Reducing agent is directly passed through the utility model and sent to center and NO by the utility modelxReacted, conversion zone compared with
Extensively, denitration efficiency is higher；System can first install cooling collar, and spray gun is conveniently replaced, and the system reform and arrangement are convenient；Spray gun is cold
But wind provides burning oxygen amount simultaneously for burner hearth center, and boiler combustion efficiency is higher.
Detailed description of the invention
Fig. 1 is arrangement schematic diagram in the utility model burner hearth.
Fig. 2 is Tthe utility model system schematic diagram.
Fig. 3 is spray gun schematic diagram.
Fig. 4 is atomizing air sleeve A to schematic diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Referring to Fig. 1, a kind of denitrification apparatus of suitable biomass boiler provided by the utility model, comprising: be arranged in biology
Biomass denitration spray gun 4 and the preparation of matched reducing agent and transportation system, distribution system, atomizing air system in matter burner hearth 3
System, cooling air system；Biomass denitration spray gun 4 is made of atomizing air casing 5, spray gun core pipe 6, cooling air casing 7；
Further, 4 arrangement of nozzles of biomass denitration spray gun is in burner hearth 3, away from 2 height of fluidization hood be 0 meter extremely
10 meters, there are at the top of spray gun 4 multiple aperture surroundings to arrange, realizes surrounding atomization；
Further, the other end of the biomass denitration spray gun 4 is placed in air compartment 1 inside or outer of 3 lower section of burner hearth
Portion；
Further, the 4 cooling air wind regime of biomass denitration spray gun is First air or Secondary Air；
Further, the 4 atomizing air gas source of biomass denitration spray gun can be provided by roots blower or air compressor machine；
Further, one or more sets are arranged in each Boiler Furnace in biomass denitration spray gun 4, each to spray when more sets are arranged
The height of rifle is equal or unequal, is distributed and is arranged according to in-furnace temperature；
Further, 7 side towards the fire of cooling air casing is laid with abrasion-proof and refractory pouring material.
As shown in Figure 2: prepared by the reducing agent and transportation system includes reducing agent device 10, the reducing agent device
10 are connected by pump 10 with flowmeter 8 with biomass denitration spray gun 4.
As shown in Fig. 3 Fig. 4: the biomass denitration spray gun 4 is by atomizing air casing 5, spray gun core pipe 6, cooling air
Casing 7 forms, and is socketed with atomizing air casing 5 and cooling air casing 7 in spray gun core pipe 6.
The working principle of the utility model is:
Denitrification reducing agent is directly passed through to the utility model to send to center and NOxIt is reacted, conversion zone is wider, denitration
Efficiency is higher；System can first install cooling collar, and spray gun is conveniently replaced, and the system reform and arrangement are convenient；Spray gun cooling wind is same
When for burner hearth center provide burning oxygen amount, boiler combustion efficiency is higher.Convenient, denitration efficiency is transformed and is arranged to the utility model tool
Height helps to improve the advantages that boiler combustion efficiency.
Claims (8)
1. a kind of denitrification apparatus of suitable biomass boiler, which is characterized in that including biomass burner hearth (3) and be arranged in biomass
Biomass denitration spray gun (4) and the preparation of matched reducing agent and transportation system, distribution system, atomizing air in burner hearth (3)
System, cooling air system；Described biomass burner hearth (3) lower layer is provided with fluidization hood (2), biomass burner hearth (3) bottom
It is provided with air compartment (1), biomass denitration spray gun (4) arrangement of nozzles is interior in burner hearth (3), biomass denitration spray gun (4)
It is internal or external that the other end is placed in the air compartment (1) below burner hearth (3)；
Reducing agent preparation and transportation system, for providing reducing agent for biomass denitration spray gun (4)；
Atomizing air system, for providing atomizing air gas source for biomass denitration spray gun (4)；
Cooling air system, for providing cooling air wind regime for biomass denitration spray gun (4)；
Distribution system is allocated for the gas internal to biomass denitration spray gun (4).
2. a kind of denitrification apparatus of suitable biomass boiler according to claim 1, which is characterized in that the biomass
Denitration spray gun (4) is made of atomizing air casing (5), spray gun core pipe (6), cooling air casing (7), and spray gun core pipe covers on (6)
It is connected to atomizing air casing (5) and cooling air casing (7).
3. a kind of denitrification apparatus of suitable biomass boiler according to claim 2, which is characterized in that described is cooling empty
Gas bushing (7) side towards the fire is laid with abrasion-proof and refractory pouring material.
4. a kind of denitrification apparatus of suitable biomass boiler according to claim 1, which is characterized in that the biomass is de-
Nitre spray gun (4) nozzle is highly 0 meter to 10 meters away from fluidization hood (2), has multiple aperture surroundings to arrange at the top of spray gun (4).
5. a kind of denitrification apparatus of suitable biomass boiler according to claim 1, which is characterized in that the biomass
The cooling air wind regime of denitration spray gun (4) cooling air system is First air or Secondary Air.
6. a kind of denitrification apparatus of suitable biomass boiler according to claim 1, which is characterized in that the biomass is de-
The atomizing air gas source of nitre spray gun (4) atomizing air system can be provided by roots blower or air compressor machine.
7. a kind of denitrification apparatus of suitable biomass boiler according to claim 1, which is characterized in that the biomass
One or more sets are arranged in each Boiler Furnace in denitration spray gun (4), and when more sets are arranged, the height of each spray gun is equal or unequal.
8. a kind of denitrification apparatus of suitable biomass boiler according to claim 1, which is characterized in that the reducing agent
Preparation and transportation system include reducing agent device (10), and the reducing agent device (10) passes through pump and flowmeter (8) and biology
Matter denitration spray gun (4) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821021385.XU CN208975516U (en) | 2018-06-29 | 2018-06-29 | A kind of denitrification apparatus of suitable biomass boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821021385.XU CN208975516U (en) | 2018-06-29 | 2018-06-29 | A kind of denitrification apparatus of suitable biomass boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208975516U true CN208975516U (en) | 2019-06-14 |
Family
ID=66779432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821021385.XU Active CN208975516U (en) | 2018-06-29 | 2018-06-29 | A kind of denitrification apparatus of suitable biomass boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208975516U (en) |
-
2018
- 2018-06-29 CN CN201821021385.XU patent/CN208975516U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208406566U (en) | A kind of multipoint mode injection apparatus for circulating fluidized bed boiler SNCR denitration system | |
| CN107213771A (en) | The biomass direct-fired device that flue gas recirculation and SNCR are combined | |
| CN105582803B (en) | Boiler desulfurization method of denitration and its desulfurization and denitrification reaction stove | |
| CN102966945A (en) | Method for reducing nitrogen oxide discharge of biomass circulating fluid bed boiler | |
| CN108434964A (en) | A kind of matrix form injection apparatus for circulating fluidized bed boiler SNCR denitration system | |
| CN106731788A (en) | A kind of coke oven flue gas denitrating system and its denitrating technique for mixing reheating with flue gas | |
| CN108201784A (en) | A kind of grate-type biomass power plant boiler flue gas purification tapping equipment and its method | |
| CN108579360A (en) | A kind of coke oven regenerator UTILIZATION OF VESIDUAL HEAT IN couples method of denitration and device with SNCR/SCR | |
| CN208975516U (en) | A kind of denitrification apparatus of suitable biomass boiler | |
| CN108654352A (en) | A kind of denitrating system of suitable biomass boiler | |
| CN205897178U (en) | Take biomass combustion device of denitrogenation function | |
| CN213967235U (en) | High-efficient mixed spray gun | |
| CN106051803B (en) | Smoke eliminator and the chain-grate boiler for being equipped with the device | |
| CN205860063U (en) | Smoke eliminator and be provided with the chain-grate boiler of this device | |
| CN207298957U (en) | A kind of energy-saving combustion heating plant | |
| CN212142070U (en) | Ammonia gas uniform distributor for SNCR denitration process | |
| CN112206941A (en) | Efficient mixing spray gun and application | |
| CN213037672U (en) | Beam kiln for producing lime | |
| CN114110618A (en) | Combustion device for treating acrylonitrile wastewater | |
| CN208145741U (en) | A kind of grate-type biomass power plant boiler flue gas purification tapping equipment | |
| CN207350356U (en) | Smoke-heating device for denitrating system | |
| CN102200388A (en) | Heating furnace device of heat-accumulating-type flue gas heat waste recovery and low nitrogen oxide | |
| CN207786298U (en) | Coal dust kiln gas high efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration | |
| CN206008468U (en) | A kind of flue gas denitrification system for coal water slurry boiler | |
| CN206404574U (en) | A kind of flue gas denitrification system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |