CN208145744U - The direct ammonia-gas spraying device of cement decomposing furnace - Google Patents
The direct ammonia-gas spraying device of cement decomposing furnace Download PDFInfo
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- CN208145744U CN208145744U CN201820420525.4U CN201820420525U CN208145744U CN 208145744 U CN208145744 U CN 208145744U CN 201820420525 U CN201820420525 U CN 201820420525U CN 208145744 U CN208145744 U CN 208145744U
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Abstract
The utility model provides a kind of direct ammonia-gas spraying device of cement decomposing furnace, it is related to cement decomposing furnace ammonia-gas spraying device technical field, including ammonia water spray device and dore furnace combustion apparatus, ammonia water spray device includes ammonium hydroxide preparation tank, defeated ammonia pump, flow control valve, flowmeter, exiting flue gas detector and connecting pipe；Dore furnace combustion apparatus includes decomposing furnace body, coal burner, tertiary-air pipe, ammonia water spray gun etc..Pass through flue gas and tertiary air air flow rate proportioning, so that main burning area is fuel-rich combustion area, ammonium hydroxide mixed solution is inputted into ammonia water spray gun by defeated ammonia pump, ammonia sprays into position position above fuel-rich regions, it is conducive to reduction NOx in low-oxygen environment, to realize the concentration of emission for reducing coal dust firing NOx.The utility model makes ammonium hydroxide, and easy construction and without geographical restrictions, utilization is at low cost, and ammonium hydroxide, which is injected directly into hypoxemia flame, makes it and reduction reaction occurs for NOx in flue gas, final to realize NOx low emission.
Description
Technical field
The utility model relates to cement decomposing furnace ammonia-gas spraying device technical fields, and in particular to a kind of cement decomposing furnace directly sprays
Ammonia device.
Background technique
Environmental pollution is on the rise, the continuous improvement that Environmental protection requires.Industrial Boiler NOx emission is main big
One of the major source of gas pollution.Nitrogen oxides (nitrogen oxides, that is, NOx) includes multiple compounds, such as an oxidation two
Nitrogen (N2O), nitric oxide (N0), nitrogen dioxide (NO2), nitrogen trioxide (N203), dinitrogen tetroxide (N204) and five oxidations two
Nitrogen (N205) etc..In addition to nitrogen dioxide, other nitrogen oxides are extremely unstable, meet light, wet or thermal change into nitrogen dioxide and an oxygen
Change nitrogen, nitric oxide becomes nitrogen dioxide again.Therefore, what is contacted in occupational environment is that several admixture of gas are frequently referred to the smoke of gunpowder
(gas), predominantly nitric oxide and nitrogen dioxide, and based on nitrogen dioxide.Nitrogen oxides all has different degrees of toxicity.
What China in 2013 promulgated《Cement industry atmosphere pollutants emission standards》Provide newly-built enterprise since on March 1st, 2014, it is existing
There is enterprise to execute 400mg/m since on July 1st, 20153Nitrogen oxide pollutant emission limit, this is just to existing decomposition
More stringent requirements are proposed for furnace low-NO_x combustion technology.
It is widely used at present, the mature low NOx technology of cement decomposing furnace, such as furnace air classification, fuel staging, the combustion of low nitrogen
Burn etc., these technologies must tie tail denitrating flue gas (such as selective catalytic reduction (SCR) and selective non-catalytic reduction
(SNCR) etc.) just it is able to satisfy national standard (GB4915- 2013).SCR and SNCR technology is by spraying into ammonia also into flue gas
Former agent restores NOx, SNCR technology there are reaction temperature windows it is relatively narrow, the escaping of ammonia is serious the problems such as, there are catalyst lifes by SCR
The unfavorable factors such as short, flue blockage and installation and operation are at high cost, in application also by larger limitation.Therefore, there is an urgent need to
Research and development low operating cost, denitration efficiency be high, low NOx technology of strong applicability meets market needs.
Utility model content
Ammonium hydroxide can be made the purpose of this utility model is to provide one kind, easy construction and without geographical restrictions,
With the direct ammonia-gas spraying device of cement decomposing furnace at low cost, to solve realization low concentration of NO x row present in above-mentioned background technique
The technical problem that the denitration operating cost faced when putting index is high, temperature window is narrow, equipment place is limited.
To achieve the goals above, the utility model takes following technical solution：
The direct ammonia-gas spraying device of a kind of cement decomposing furnace provided by the utility model, including decomposition combustion equipment and ammonium hydroxide spray
Penetrate system, the ammonia water spray system includes the ammonium hydroxide preparing tank being sequentially communicated by pipeline, flow control valve, flowmeter, defeated
Ammonia pump, ammonia water spray gun；The dore furnace combustion apparatus includes decomposition furnace body, tertiary-air pipe, the cigarette being from top to bottom sequentially communicated
Gas import；The flowmeter communication link is connected to a controller, and the output end of the controller is separately connected the flow control valve
With the defeated ammonia pump, the ammonia water spray gun is uniformly installed around the decomposition furnace body, and the ammonia water spray gun is located at same level
In face.
Further, the eject position of the ammonia water spray gun is located at the top of fuel-rich regions in the decomposition furnace body.
Further, the temperature of the fuel-rich regions is 850-900 DEG C.
Further, the quantity of the ammonia water spray gun is 4.
Further, the nozzle of the ammonia water spray gun is mechanical atomization formula nozzle.
Further, exiting flue gas detector, the exiting flue gas are equipped in the smoke outlet for decomposing furnace body
Detector and the controller communicate to connect.
The direct ammonia-gas spraying device working principle of cement decomposing furnace described in the utility model is：
By bottom gas inlet air quantity and tertiary-air pipe air flow rate proportioning, so that main burning area is fuel-rich combustion area,
On the basis of this, the ammonia in ammonium hydroxide preparation tank is mixed with the solution that ammonia content is 20% with water, passes through defeated ammonia pump and inputs ammonium hydroxide
Spray gun sprays into position between fuel-rich regions and burning-out zone.Coal dust carries out burn incompletely in reducing zone, and low-oxygen environment is conducive to suppression
The generation of NOx processed, meanwhile, ammonium hydroxide sprays into the fuel-rich region of high temperature, hypoxemia, the NH that fast decoupled goes out3It is raw in ingredient and rising flue gas
At NOx mixing occur reduction reaction, to substantially reduce the concentration of emission of coal dust firing NOx.It reacts O+H2O → OH+OH
Increase flue gas OH radical ion, even if increasing for flue gas OH amount of ions is enhanced with NO reduction effect, reacts as follows：
The utility model beneficial effect：Without protecting gas to protect spray gun by peripheral hardware, can cool down to spray gun
Protection can effectively prevent spray gun and nozzle erosion to damage, improve spray gun service life；Protective case in-pipe flow can exist with ammonia
It is mixed to form ammonium hydroxide at nozzle, reduces ammonium hydroxide and prepares link, it is raw originally to greatly reduce production.
The additional aspect of the utility model and advantage will be set forth in part in the description, these will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the direct ammonia-gas spraying device structure chart of cement decomposing furnace described in the utility model embodiment.
Fig. 2 is that the ammonia water spray gun installation condition of the direct ammonia-gas spraying device of cement decomposing furnace described in the utility model embodiment is shown
It is intended to.
Wherein：1- ammonium hydroxide preparing tank；2- flow control valve；3- flowmeter；The defeated ammonia pump of 4-；5- ammonia water spray gun；6- dore furnace
Furnace body；7- tertiary-air pipe；8- gas inlet；9- controller.
Specific embodiment
The embodiments of the present invention is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein
Same or similar label indicates same or similar element or module with the same or similar functions from beginning to end.Lead to below
It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the utility model, and cannot be construed to practical to this
Novel limitation.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being used in the specification of the utility model
Wording " comprising " refer to that there are the feature, integer, step, operation, element and/or modules, but it is not excluded that in the presence of or
Add other one or more features, integer, step, operation, element, module and/or their group.
It should be noted that in embodiment described in the utility model unless specifically defined or limited otherwise, term
" connection ", " fixation " etc. shall be understood in a broad sense, and may be a fixed connection, may be a detachable connection, or integral, can be
Mechanical connection, is also possible to be electrically connected, can be and be directly connected to, be also possible to be indirectly connected with by intermediary, can be two
The interaction relationship of connection or two elements inside a element, unless having specific limit.For those skilled in the art
For member, concrete meaning of the above-mentioned term in the utility model embodiment can be understood as the case may be.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology
Term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields.
It should also be understood that those terms such as defined in the general dictionary should be understood that have and the context of the prior art
In the consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
Convenient for the understanding to the utility model embodiment, to be done by taking specific embodiment as an example below in conjunction with attached drawing further
Explanation, and embodiment does not constitute the restriction to the utility model embodiment.
Those of ordinary skill in the art are it should be understood that attached drawing is the schematic diagram of one embodiment, the portion in attached drawing
Part or device are not necessarily implemented necessary to the utility model.
Embodiment
As shown in Figure 1, being a kind of direct ammonia-gas spraying device of cement decomposing furnace provided by the embodiment of the utility model, including decompose
Combustion apparatus and ammonia water spray system, the ammonia water spray system include ammonium hydroxide preparing tank 1, the flow being sequentially communicated by pipeline
Regulating valve 2, flowmeter 3, defeated ammonia pump 4, ammonia water spray gun 5；The dore furnace combustion apparatus includes point being from top to bottom sequentially communicated
Solve furnace body 6, tertiary-air pipe 7, gas inlet 8；3 communication link of flowmeter is connected to the input terminal of a controller 9, the control
The output end of device 9 is separately connected the flow control valve 2 and the defeated ammonia pump 4, and the ammonia water spray gun 5 surrounds the dore furnace furnace
Body 6 is uniformly installed, and the ammonia water spray gun 5 is located in the same horizontal plane.
8 air quantity of gas inlet is directly inputted by rotary kiln, actual wind speed 30m/s, and it is whole that high-speed flow is conducive to optimization burner hearth
Body flow field avoids localized hyperthermia, while advantageously reducing NOx concentration.The eject position of the ammonia water spray gun 5 is located at described point
The top of fuel-rich regions in furnace body 6 is solved, ammonia water spray regional temperature is to arrange 4 in same absolute altitude between 850-900 DEG C
Spray gun is located at furnace body wall surface equidistant, is symmetric, and spray gun layout drawing is as shown in Figure 2.
In actual use, the quantity of above-mentioned ammonia water spray gun 5 is not limited by above-mentioned quantity, installation site and installation
Quantity can be adjusted according to the actual situation, to realize corresponding effect.
Ammonia water spray gun 5 uses mechanical atomization, and is not necessarily to air distribution, and the pressure high speed provided by defeated ammonia pump 4 is injected in furnace
It rises in air-flow, the NH decomposited3It is mixed with the NOx generated in flue gas and reduction reaction occurs, to reduce the row of coal dust firing NOx
Put concentration.
It is cooperated by the air quantity of bottom gas inlet 8 and the air quantity of tertiary-air pipe 7, so that main burning area is fuel-rich
Combustion zone will produce the ammonia spirit of debita spissitudo on this basis in preparation tank, input ammonia water spray gun, spray by defeated ammonia pump
Enter position between fuel-rich and burning-out zone.
It is described decompose furnace body 6 smoke outlet be equipped with exiting flue gas detector, the exiting flue gas detector with
The controller 9 communicates to connect.Flue gas inspection instrument can monitor the content of NOx in exiting flue gas at any time, and content information is passed to
Controller 9 is recorded, to adjust to equipment operating parameters such as ammonia concn, gas inlet air quantity, tertiary-air pipe air quantity
It is whole.
The course of work of the direct ammonia-gas spraying device of cement decomposing furnace described in the utility model embodiment is as follows：
Certain density ammonium hydroxide is prepared in ammonium hydroxide preparing tank 1, when carrying out spray ammonia operation, is controlled by controller 9
It makes defeated ammonia pump 4 to open, the ammonium hydroxide in ammonium hydroxide preparing tank 1 is again under the swabbing action of defeated ammonia pump 4 through pipeline to ammonia water spray gun 5
Place, to carrying out ammonia water spray in decomposition combustion furnace.Air quantity is directly inputted by rotary kiln by bottom gas inlet 8, cooperation is three times
The air quantity of air hose is matched, and fuel-rich combustion area of main burning area is made, at this point, by ammonia water spray gun spray into materialization ammonium hydroxide just with
NOx in flue gas reacts, to reduce the concentration of emission of NOx.
The ammonia vol sprayed into combustion furnace is detected by flowmeter, when being more than preset flow, flowmeter is by flow signal
Controller 9 is passed to, controller 9 controls the open and-shut mode of flow control valve 2 according to flow signal, to control penetrating combustion furnace
The flow of interior ammonium hydroxide.
In conclusion the utility model embodiment is by being uniformly arranged ammonia water spray gun 5 decomposing furnace body sustained height,
Ammonium hydroxide sprays into furnace body at ammonia water spray gun 5 through mechanical atomization, makes the reduction reaction of fuel-rich regions generation NOx in furnace body, reduces
The concentration of emission of NOx；By ammonium hydroxide preparing tank can extemporaneous preparation ammonium hydroxide, ammonium hydroxide is connected to ammonium hydroxide preparing tank by defeated ammonia pump 4
Spray gun 5, defeated ammonia pump 4, which provides negative pressure, makes ammonium hydroxide by 5 high speed ejection of ammonia water spray gun, at the position above fuel-rich regions.In hypoxemia
Environment is conducive to reduction NOx, to realize the concentration of emission for reducing coal dust firing NOx；Bottom gas inlet wind speed is about 30m/s,
High-speed flow is conducive to optimization burner hearth entirety flow field, avoids localized hyperthermia, is also beneficial to reduce NOx concentration；Uncombusted coal dust exists
Burning-out zone is completed into burning, to realize that dore furnace reduces the purpose of NOx emission.
Those of ordinary skill in the art will appreciate that：The component in device in the utility model embodiment can be according to reality
The description for applying example is distributed in the device of embodiment, can also carry out corresponding change positioned at one or more different from the present embodiment
In a device.The component of above-described embodiment can be merged into a component, can also be further split into multiple subassemblies.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (6)
1. a kind of direct ammonia-gas spraying device of cement decomposing furnace, including decomposition combustion equipment and ammonia water spray system, it is characterised in that：Institute
State ammonia water spray system include the ammonium hydroxide preparing tank (1) being sequentially communicated by pipeline, it is flow control valve (2), flowmeter (3), defeated
Ammonia pump (4), ammonia water spray gun (5)；The dore furnace combustion apparatus includes the decomposition furnace body (6) being from top to bottom sequentially communicated, three
Secondary air hose (7), gas inlet (8)；Flowmeter (3) communication link is connected to a controller (9), the output of the controller (9)
End is separately connected the flow control valve (2) and the defeated ammonia pump (4), and the ammonia water spray gun (5) surrounds the decomposition furnace body
(6) uniformly installation, the ammonia water spray gun (5) are located in the same horizontal plane.
2. the direct ammonia-gas spraying device of cement decomposing furnace according to claim 1, it is characterised in that：The ammonia water spray gun (5)
Eject position is located at the top for decomposing furnace body (6) interior fuel-rich regions.
3. the direct ammonia-gas spraying device of cement decomposing furnace according to claim 2, it is characterised in that：The temperature of the fuel-rich regions
It is 850-900 DEG C.
4. the direct ammonia-gas spraying device of cement decomposing furnace according to claim 3, it is characterised in that：The ammonia water spray gun (5)
Quantity is 4.
5. the direct ammonia-gas spraying device of cement decomposing furnace according to claim 4, it is characterised in that：The ammonia water spray gun (5)
Nozzle is mechanical atomization formula nozzle.
6. the direct ammonia-gas spraying device of cement decomposing furnace according to claim 5, it is characterised in that：In the decomposition furnace body
(6) smoke outlet is equipped with exiting flue gas detector, the exiting flue gas detector and the controller（9）Communication connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820420525.4U CN208145744U (en) | 2018-03-27 | 2018-03-27 | The direct ammonia-gas spraying device of cement decomposing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820420525.4U CN208145744U (en) | 2018-03-27 | 2018-03-27 | The direct ammonia-gas spraying device of cement decomposing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208145744U true CN208145744U (en) | 2018-11-27 |
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ID=64378977
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820420525.4U Active CN208145744U (en) | 2018-03-27 | 2018-03-27 | The direct ammonia-gas spraying device of cement decomposing furnace |
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| CN (1) | CN208145744U (en) |
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2018
- 2018-03-27 CN CN201820420525.4U patent/CN208145744U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210407 Address after: 255000 No.1, 202 Jinjing Avenue, high tech Zone, Zibo City, Shandong Province Patentee after: Zibo Hanneng Qingyuan Industrial Gas Co.,Ltd. Address before: 100070 3rd floor, building 2, district 10, 188 South 4th Ring Road West, Fengtai District, Beijing (Park) Patentee before: BEIJING HANERGY QINGYUAN TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 255000 No.1, 202 Jinjing Avenue, high tech Zone, Zibo City, Shandong Province Patentee after: Zibo hanergy Qingyuan Intelligent Technology Co.,Ltd. Address before: 255000 No.1, 202 Jinjing Avenue, high tech Zone, Zibo City, Shandong Province Patentee before: Zibo Hanneng Qingyuan Industrial Gas Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221014 Address after: 100070 Building 2, area 10, 188 South 4th Ring Road West, Fengtai District, Beijing Patentee after: BEIJING HANERGY QINGYUAN TECHNOLOGY CO.,LTD. Address before: 255000 No.1, 202 Jinjing Avenue, high tech Zone, Zibo City, Shandong Province Patentee before: Zibo hanergy Qingyuan Intelligent Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230720 Address after: 100070 3rd floor, building 2, area 10, 188 South 4th Ring Road West, Fengtai District, Beijing Patentee after: BEIJING HANERGY QINGYUAN TECHNOLOGY CO.,LTD. Patentee after: Beijing Zhonghan Quanneng Technology Co.,Ltd. Address before: 100070 Building 2, area 10, 188 South 4th Ring Road West, Fengtai District, Beijing Patentee before: BEIJING HANERGY QINGYUAN TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right |