CN208493767U - A kind of efficient boiler denitrification apparatus - Google Patents
A kind of efficient boiler denitrification apparatus Download PDFInfo
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- CN208493767U CN208493767U CN201821107798.XU CN201821107798U CN208493767U CN 208493767 U CN208493767 U CN 208493767U CN 201821107798 U CN201821107798 U CN 201821107798U CN 208493767 U CN208493767 U CN 208493767U
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- reducing agent
- boiler
- steam
- atomizing lance
- fluid pump
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Abstract
The utility model discloses a kind of efficient boiler denitrification apparatus, are made of reducing agent slot, sink, reducing agent matching system, reducing agent transportation system, jet atomization system and control system；Reducing agent matching system includes electromagnetic flow valve, blending tank；Reducing agent transportation system includes several fluid delivery tubes and fluid pump；Jet atomization system includes atomizing lance, and atomizing lance is equipped with reducing agent access and steam passage；Control system signal connects each electromagnetic flow valve and fluid pump, and controls its opening and closing；The water-cooling wall of boiler is equipped with several spray gun load ports, and atomizing lance is inserted into inside burner hearth from the spray gun load port；Reducing agent access and steam passage communicate so that reducing agent and steam converge communicating position, and are entered reducing agent atomized spray inside burner hearth by the steam.Denitrification apparatus provided by the utility model, can in simple structure, lower cost is transformed existing boiler plant, and realizes higher denitration efficiency.
Description
Technical field
The utility model relates to boiler smoke Treatment process field more particularly to a kind of efficient boiler denitrification apparatus.
Background technique
For middle and small burn coal boiler and biomass boiler burning generate a large amount of harmful smokes, wherein containing with dust,
Atmosphere pollution based on nitrogen oxides, sulfur dioxide.The discharge of nitrogen oxides and sulfur dioxide can cause atmospheric environment sternly
It endangers again.Therefore, the desulphurization denitration improvement of boiler smoke has practical significance enviromental protection and improvement.
90% or more nitrogen oxides in boiler smoke be in the form of nitrogen oxides existing for, generally due to nitrogen oxides
It is insoluble in water, is difficult effectively to absorb in wet desulphurization device technique, therefore go the technical requirements of denitrification relatively high.Base
In sheet, denitration process is divided into before burning the modes such as denitration after denitration, combustion process denitration, burning.Denitration is specifically wrapped again after burning
Include selective-catalytic-reduction denitrified (SCR) technology, selective non-catalytic reduction denitration (SNCR) technology, activated carbon adsorption etc..Its
Middle SCR technology can obtain the up to NO of 70-90%XRemoval efficiency, but since its expensive catalyst and life problems cause
It invests excessive, limits its extensive use, and relatively inexpensive SNCR technology, NOXRemoval efficiency is made up to 40-60% or so
For a kind of economical and practical NOXRemoving sulfuldioxide, SNCR denitration technology are industrially used widely.
Stringent control with country to atmosphere pollution is also increasingly stringenter the control of the flue gas emission of boiler, more next
More areas even require minimum discharge.Thus, it is difficult to meet increasingly strict ring for common SNCR denitration technology
Guaranteed request.
Utility model content
The purpose of this utility model is to provide a kind of efficient boiler denitrification apparatus, can in simple structure, it is lower
Existing boiler plant is transformed in cost, and realizes higher denitration efficiency.
To achieve the above object, the technical solution of the utility model is as follows:
A kind of efficient boiler denitrification apparatus, suitable for removing the nitrogen oxides generated boiler combustion process, the boiler
With steam pipework, the denitrification apparatus is by reducing agent slot, sink, reducing agent matching system, reducing agent transportation system, injection mist
Change system and control system composition；Liquid reducing agent is stored in reducing agent slot, stores deionized water in sink；The reduction
Agent matching system includes the first electromagnetic flow valve, the second electromagnetic flow valve, blending tank；Reducing agent transportation system includes several fluids
Delivery pipe and fluid pump；The sink and blending tank pass through corresponding fluid delivery tube, fluid pump and the first electromagnetic flow valve
It is in fluid communication, passes through corresponding fluid delivery tube, fluid pump and the second Electromagnetic Flow valve fluid between reducing agent slot and blending tank
Connection；Jet atomization system includes atomizing lance, and atomizing lance is equipped with reducing agent access and steam passage, the reducing agent access
Be connected to the blending tank by corresponding fluid delivery tube, fluid pump, the steam passage by corresponding fluid delivery tube,
Fluid pump is connected to steam pipework；The control system signal connects each electromagnetic flow valve and fluid pump, and control its open and
It closes；The water-cooling wall of the boiler is equipped with several spray gun load ports, and atomizing lance is inserted into burner hearth from the spray gun load port
Portion；The reducing agent access and steam passage communicate so that reducing agent and steam converge communicating position, and pass through the steam
Reducing agent atomized spray is entered inside burner hearth.
In a certain embodiment: there are high-temperature region and middle warm area, several spray gun load ports in the burner hearth of the boiler
It is equally distributed in the high-temperature region and middle warm area；It is distributed in the atomizing lance of high-temperature region and the atomizing lance being distributed in middle warm area
It is spaced apart from each other arrangement；Atomizing lance has oblique nozzle, and the atomizing lance positioned at high-temperature region, oblique nozzle is towards disposed thereon
The middle warm area of side, and it is located at the atomizing lance of high-temperature region, the high-temperature region that oblique nozzle direction is disposed below.
In a certain embodiment: the sink, which has, is connected to reducing agent slot by corresponding fluid delivery tube and fluid pump
Another water outlet.
In a certain embodiment: the reducing agent is ammonium hydroxide or liquid urea.
In a certain embodiment: the boiler is coal-burning boiler or biomass boiler.
Compared to the prior art, the utility model has the beneficial effects that:
(1) system is simple: the equipment setting of existing boiler is had no need to change, and only need to be in existing coal-fired (or biomass)
Increase ammonium hydroxide on the basis of boiler or urea storage slot, ammonia or urea injection apparatus, system structure are relatively simple；
(2) system investments are small: not needing expensive catalyst simply and in operation due to system, it is only necessary to cheap urine
Element or liquefied ammonia are relatively inexpensive practical；
(3) resistance is small: smaller to the normal combustion influence on system operation of boiler；
(4) purification efficiency: NOXRemoval efficiency up to 70% or more, can be realized complete qualified discharge.
Detailed description of the invention
The system that Fig. 1 shows the utility model embodiment constitutes schematic diagram.
Specific embodiment
Fig. 1 is please referred to, the utility model provides a kind of efficient boiler denitrification apparatus, is suitable for removal boiler combustion process
The nitrogen oxides of middle generation, the boiler can be coal-burning boiler or biomass boiler, and have steam pipework.The steam pipe
Road can draw steam manifold, and the steam of relevant parameter is discharged.
The denitrification apparatus of the utility model by reducing agent slot 1, sink 2, reducing agent matching system, reducing agent transportation system,
Jet atomization system and control system composition.Liquid reducing agent is stored in the reducing agent slot 1, stored in sink 2 from
Sub- water.In the present embodiment, the reducing agent is ammonium hydroxide or liquid urea.
The reducing agent matching system includes the first electromagnetic flow valve 31, the second electromagnetic flow valve 32, blending tank 33；Reduction
Agent transportation system includes several fluid delivery tubes and fluid pump.The sink 2 and blending tank 33 by corresponding fluid delivery tube,
Fluid pump and 31 valve fluid of the first Electromagnetic Flow connection, between reducing agent slot 1 and blending tank 33 by corresponding fluid delivery tube,
Fluid pump and the second electromagnetic flow valve 32 are in fluid communication.
Jet atomization system includes atomizing lance 4, and atomizing lance is equipped with reducing agent access and steam passage, the reducing agent
Access is connected to the blending tank 33 by corresponding fluid delivery tube, fluid pump, and the steam passage passes through corresponding fluid
Delivery pipe, fluid pump are connected to steam pipework.Specifically, being additionally provided with pressure reducing valve between the steam passage and steam pipework.
The control system signal connects each electromagnetic flow valve and fluid pump, and controls the electromagnetic flow valve and fluid pump is opened
It opens and closes.
The water-cooling wall of the boiler is equipped with several spray gun load ports, and atomizing lance 4 is inserted into furnace from the spray gun load port
Inside thorax；The reducing agent access and steam passage communicate so that reducing agent and steam converge communicating position, and by described
Steam enters reducing agent atomized spray inside burner hearth, to carry out aflame denitrating flue gas processing.
In specific structure, there is high-temperature region and middle warm area in the burner hearth of the boiler, between described several spray gun load ports etc.
Away from being distributed in the high-temperature region and middle warm area.In addition, being distributed in atomizing lance and the atomization being distributed in the middle warm area spray of high-temperature region
Rifle is spaced apart from each other arrangement；And atomizing lance has oblique nozzle, the atomizing lance positioned at high-temperature region, oblique nozzle direction is located at
Middle warm area above it, and it is located at the atomizing lance of high-temperature region, the high-temperature region that oblique nozzle direction is disposed below.In this way,
Oblique nozzle will carry the reducing agent of steam, carries out the setting that liquidates with flow of flue gas direction, makes it possible to increase the reaction zone
The turbulence level in domain increases the probability to react to each other, improves reaction efficiency.
By configuring above, the working method of the utility model are as follows: reducing agent is defeated by reducing agent matching system, reducing agent
System is sent to enter in the reducing agent access of atomizing lance 4, and the steam of corresponding power is then discharged from steam pipework, and
By corresponding pressure reducing valve, after reducing its temperature, into the steam passage of atomizing lance, after the two mixing, steam is sprayed in atomization
Diffusion, acceleration again in rifle, and biggish pressure is formed, to squeeze and push reducing agent, droplet is become from nozzle
It sprays.Catalytic reduction reaction occurs for reducing agent after ejection and flue gas, and by the NO in flue gasXIt is reduced to N2Flue is discharged, realizes
Denitration process.In the present embodiment, the steam of turbine low pressure cylinder discharge not entered before condenser, temperature is can be selected in the steam
Spend lower, flow velocity is very fast, and humidity is lower, and the influence to reducing agent atomization is smaller.
In one preferred embodiment, the sink 2, which has, is connected to reduction by corresponding fluid delivery tube and fluid pump
Another water outlet of agent slot 1 improves the ion balance of reducing agent and pure just to introduce deionized water when preparing reducing agent
Degree.
The above is only the preferred embodiment of the present invention, is not intended to limit its scope of the patents, all to utilize this
Equivalent structure transformation made by utility model specification and accompanying drawing content is directly or indirectly used in other relevant technology necks
Domain is also included in the patent protection scope of the utility model.
Claims (5)
1. a kind of efficient boiler denitrification apparatus, suitable for removing the nitrogen oxides generated boiler combustion process, the boiler tool
There is steam pipework；It is characterized by: the denitrification apparatus is by reducing agent slot, sink, reducing agent matching system, reducing agent delivery system
System, jet atomization system and control system composition；Liquid reducing agent is stored in reducing agent slot, stores deionization in sink
Water；
The reducing agent matching system includes the first electromagnetic flow valve, the second electromagnetic flow valve, blending tank；Reducing agent transportation system
Including several fluid delivery tubes and fluid pump；The sink and blending tank pass through corresponding fluid delivery tube, fluid pump and
One electromagnetic flow valve is in fluid communication, and passes through corresponding fluid delivery tube, fluid pump and the second electricity between reducing agent slot and blending tank
The connection of magnetic flow valve fluid；
Jet atomization system includes atomizing lance, and atomizing lance is equipped with reducing agent access and steam passage, the reducing agent access
Be connected to the blending tank by corresponding fluid delivery tube, fluid pump, the steam passage by corresponding fluid delivery tube,
Fluid pump is connected to steam pipework；The control system signal connects each electromagnetic flow valve and fluid pump, and control its open and
It closes；The water-cooling wall of the boiler is equipped with several spray gun load ports, and atomizing lance is inserted into burner hearth from the spray gun load port
Portion；The reducing agent access and steam passage communicate so that reducing agent and steam converge communicating position, and pass through the steam
Reducing agent atomized spray is entered inside burner hearth.
2. a kind of efficient boiler denitrification apparatus as described in claim 1, it is characterised in that: have height in the burner hearth of the boiler
Warm area and middle warm area, several spray gun load ports are equally distributed in the high-temperature region and middle warm area；It is distributed in the mist of high-temperature region
Change spray gun and is spaced apart from each other arrangement with the atomizing lance being distributed in middle warm area；Atomizing lance has oblique nozzle, is located at high-temperature region
Atomizing lance, oblique nozzle is located at the atomizing lance of high-temperature region towards the middle warm area being positioned above, oblique nozzle
Towards the high-temperature region being disposed below.
3. a kind of efficient boiler denitrification apparatus as described in claim 1, it is characterised in that: the sink has by corresponding
Fluid delivery tube and fluid pump are connected to another water outlet of reducing agent slot.
4. a kind of efficient boiler denitrification apparatus as described in claim 1, it is characterised in that: the reducing agent is ammonium hydroxide or liquid
Urea.
5. a kind of efficient boiler denitrification apparatus as described in claim 1, it is characterised in that: the boiler is coal-burning boiler or life
Substance boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107798.XU CN208493767U (en) | 2018-07-13 | 2018-07-13 | A kind of efficient boiler denitrification apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107798.XU CN208493767U (en) | 2018-07-13 | 2018-07-13 | A kind of efficient boiler denitrification apparatus |
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| Publication Number | Publication Date |
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| CN208493767U true CN208493767U (en) | 2019-02-15 |
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| CN201821107798.XU Active CN208493767U (en) | 2018-07-13 | 2018-07-13 | A kind of efficient boiler denitrification apparatus |
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| CN (1) | CN208493767U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519496A (en) * | 2020-04-30 | 2020-08-11 | 三一汽车制造有限公司 | Drying device and asphalt station |
| CN114849455A (en) * | 2022-04-24 | 2022-08-05 | 苏州谦恒巨环保科技有限公司 | SNCR denitration treatment boiler furnace temperature measurement control reducing agent injection system |
| WO2022205778A1 (en) * | 2021-03-29 | 2022-10-06 | 青岛理工大学 | Biomass low-nitrogen combustion boiler based on local gasification technology |
-
2018
- 2018-07-13 CN CN201821107798.XU patent/CN208493767U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519496A (en) * | 2020-04-30 | 2020-08-11 | 三一汽车制造有限公司 | Drying device and asphalt station |
| WO2022205778A1 (en) * | 2021-03-29 | 2022-10-06 | 青岛理工大学 | Biomass low-nitrogen combustion boiler based on local gasification technology |
| CN114849455A (en) * | 2022-04-24 | 2022-08-05 | 苏州谦恒巨环保科技有限公司 | SNCR denitration treatment boiler furnace temperature measurement control reducing agent injection system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200805 Address after: Room 503E, South Chuangye building, Pioneer Park, torch high tech Zone, Xiamen, Fujian Province Patentee after: China catalyst (Xiamen) Environmental Technology Co., Ltd Address before: Unit L, 2nd Floor, No. 1 Building, Wuyuan Bay Business Operation Center, Huli District, Xiamen City, Fujian Province, 361010 Patentee before: FUJIAN PROVINCE QINGHONG ENERGY SAVING ENVIRONMENTAL PROTECTION Co.,Ltd. |
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| TR01 | Transfer of patent right |