CN108267023A - A kind of discharged nitrous oxides control method and device - Google Patents
A kind of discharged nitrous oxides control method and device Download PDFInfo
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- CN108267023A CN108267023A CN201611259145.9A CN201611259145A CN108267023A CN 108267023 A CN108267023 A CN 108267023A CN 201611259145 A CN201611259145 A CN 201611259145A CN 108267023 A CN108267023 A CN 108267023A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
- F27D2019/0012—Monitoring the composition of the atmosphere or of one of their components
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Abstract
An embodiment of the present invention provides a kind of discharged nitrous oxides control method and device, wherein method includes：Obtain the discharge state of current nitrogen oxides；Obtain the current basicity state of material；According to discharge state, the material of the current nitrogen oxides current basicity state and preset strategy, the proportioning and CaCO of CaO in material are adjusted3Proportioning.In embodiments of the present invention, according to the discharge state of current nitrogen oxides, material current basicity state and preset strategy, the proportioning and CaCO of CaO in material are adjusted3Proportioning, in this way on the basis of sinter basicity is ensured, by changing the composition of flux, that is, properly increase the content of CaO, reduce CaCO3Content, the generation of nitrogen oxides can be inhibited, not only cost is relatively low, and does not influence the chemical attribute of sinter, ensures the quality of sinter.
Description
Technical field
The present invention relates to metallurgical technology field more particularly to a kind of discharged nitrous oxides control method and device.
Background technology
With the rapid development of modern industry, steel production scale is increasing, energy consumption is also more and more, energy-saving ring
Protect the important indicator become in steel production.In steel production, iron-bearing material ore enter before blast furnace process need by
Sintering processes.In sintering process, various powdery iron-containing raw materials are first incorporated suitable fuel and flux, and add in suitable
Water, through mixing and forming mixed material, then be sintered the mixed material uniformly dispersing by batcher and material distributing machine after pelletizing
On trolley, high-temperature roasting is carried out after igniting, makes the mixed material that a series of physical chemical reaction occur, ultimately produces easy smelting
Granular material to get to sinter.
In mixed material roasting process, multiple pollutant can be given off, mainly including dust, SO2With NOx (nitrogen oxidations
Object) etc..Inventor has found in the implementation of the present invention, in the prior art, can be taken off by the desulfurization of sintering system end
Nitre device handles NOx, however the rather expensive of desulphurization denitration, cost are very high.There has been no a kind of effective in the prior art
Method the discharge of NOx controlled.
Invention content
The present invention provides a kind of discharged nitrous oxides control method and device, to be carried out to the NOx generated in sintering process
Effectively control.
It is according to embodiments of the present invention in a first aspect, provide a kind of discharged nitrous oxides control method, the method includes：
Obtain the discharge state of current nitrogen oxides；
Obtain the current basicity state of material；
According to discharge state, the material of the current nitrogen oxides current basicity state and preset strategy, material is adjusted
The proportioning and CaCO of middle CaO3Proportioning.
Optionally, the discharge state of current nitrogen oxides is obtained, including：
Obtain nitrous oxides concentration monitor value current in flue gas；
According to current nitrous oxides concentration monitor value and the relationship of default discharge standard, the row of current nitrogen oxides is determined
Put state.
Optionally, the current basicity state of material is obtained, including：
Obtain the current basicity of material；
According to the current basicity of material and the relationship of preset basicity a reference value, the current basicity state of material is determined.
Optionally：
The discharge state of the current nitrogen oxides be divided into the first discharge state, the second discharge state, third discharge state,
4th discharge state, the 5th discharge state；
The current basicity state of the material is divided into the first basicity state, the second basicity state, third basicity state, the 4th
Basicity state, the 5th basicity state；
According to discharge state, the material of the current nitrogen oxides current basicity state and preset strategy, material is adjusted
The proportioning and CaCO of middle CaO3Proportioning, including：
According to the combination of the discharge state of the current nitrogen oxides and the current basicity state of material, in the default plan
The slightly middle corresponding CaO of inquiry matches adjusted value and CaCO3Match adjusted value；
According to the CaO proportioning adjusted values and CaCO inquired3Adjusted value is matched, adjusts the proportioning and CaCO of CaO in material3
Proportioning.
Optionally, the preset strategy includes：
When the discharge state of the current nitrogen oxides is in the first discharge state or the second discharge state：It is if described
The current basicity state of material is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is increase
The sum of second preset value and the second designated value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in third discharge state：If the current basicity of the material
State is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, the CaCO3Proportioning adjustment
It is worth to reduce the first designated value；If the current basicity state of the material is in third basicity state, the CaO proportionings are adjusted
Whole value is increases the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If the current alkali of the material
Degree state is in the 4th basicity state or the 5th basicity state, then CaO proportioning adjusted value is increases the second preset value and the
The sum of two designated values, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in the 4th discharge state or five discharge states：It is if described
The current basicity state of material is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is reduce the second preset value, the CaCO3Adjusted value is matched to increase by the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is reduce
First preset value, the CaCO3Adjusted value is matched to increase the sum of third preset value and the second designated value.
Optionally, the current value and the basicity a reference value of first designated value and second designated value according to basicity
It determines.
Optionally, in material is adjusted CaO proportioning and CaCO3Proportioning before, the method further includes：
Adjusted value matches the CaO of acquisition according to default constraints and CaCO3 proportioning adjusted values are modified, wherein institute
Default constraints is stated to include：CaCO after the proportioning of CaO and adjustment after adjustment3Proportioning should all preset allowed band it
It is interior.
Optionally, the method further includes：
Every predetermined period, the primary above-mentioned CaO from the discharge state to adjustment material for obtain current nitrogen oxides is performed
Proportioning and CaCO3Proportioning the step of.
Second aspect according to embodiments of the present invention, provides a kind of discharged nitrous oxides control device, and described device includes：
Discharge state acquisition module, for obtaining the discharge state of current nitrogen oxides；
Basicity state acquisition module, for obtaining the current basicity state of material；
Proportioning adjustment module, for the current basicity state of discharge state, the material according to the current nitrogen oxides and
Preset strategy adjusts the proportioning and CaCO of CaO in material3Proportioning.
Optionally, the discharge state acquisition module is used for：
Obtain nitrous oxides concentration monitor value current in flue gas；
According to current nitrous oxides concentration monitor value and the relationship of default discharge standard, the row of current nitrogen oxides is determined
Put state.
Optionally, the basicity state acquisition module is used for：
Obtain the current basicity of material；
According to the current basicity of material and the relationship of preset basicity a reference value, the current basicity state of material is determined.
Optionally：
The discharge state of the current nitrogen oxides be divided into the first discharge state, the second discharge state, third discharge state,
4th discharge state, the 5th discharge state；
The current basicity state of the material is divided into the first basicity state, the second basicity state, third basicity state, the 4th
Basicity state, the 5th basicity state；
The proportioning adjustment module is used for：
According to the combination of the discharge state of the current nitrogen oxides and the current basicity state of material, in the default plan
The slightly middle corresponding CaO of inquiry matches adjusted value and CaCO3Match adjusted value；
According to the CaO proportioning adjusted values and CaCO inquired3Adjusted value is matched, adjusts the proportioning and CaCO of CaO in material3
Proportioning.
Optionally, the preset strategy includes：
When the discharge state of the current nitrogen oxides is in the first discharge state or the second discharge state：It is if described
The current basicity state of material is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is increase
The sum of second preset value and the second designated value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in third discharge state：If the current basicity of the material
State is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, the CaCO3Proportioning adjustment
It is worth to reduce the first designated value；If the current basicity state of the material is in third basicity state, the CaO proportionings are adjusted
Whole value is increases by the second preset value, and the CaCO3 proportioning adjusted values is reduce the 4th preset value；If the current alkali of the material
Degree state is in the 4th basicity state or the 5th basicity state, then CaO proportioning adjusted value is increases the second preset value and the
The sum of two designated values, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in the 4th discharge state or five discharge states：It is if described
The current basicity state of material is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is reduce the second preset value, the CaCO3Adjusted value is matched to increase by the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is reduce
First preset value, the CaCO3Adjusted value is matched to increase the sum of third preset value and the second designated value.
Optionally, the current value and the basicity a reference value of first designated value and second designated value according to basicity
It determines.
Optionally, the proportioning adjustment module is additionally operable to：
Adjusted value and CaCO are matched to the CaO of acquisition according to default constraints3Proportioning adjusted value is modified, wherein institute
Default constraints is stated to include：CaCO after the proportioning of CaO and adjustment after adjustment3Proportioning should all preset allowed band it
It is interior.
Optionally, described device further includes：
Loop control module, for every predetermined period, performing primary above-mentioned from the discharge shape for obtaining current nitrogen oxides
The proportioning and CaCO of CaO in state to adjustment material3Proportioning the step of.
Technical solution provided in an embodiment of the present invention can include the following benefits：
In embodiments of the present invention, according to the current basicity state of the discharge state of current nitrogen oxides, material and default
Strategy adjusts the proportioning and CaCO of CaO in material3Proportioning, it is molten by changing in this way on the basis of sinter basicity is ensured
The composition of agent properly increases the content of CaO, reduce CaCO3Content, the generation of nitrogen oxides can be inhibited, not only
Cost is relatively low, and does not influence the chemical attribute of sinter, ensures the quality of sinter.
It should be understood that above general description and following detailed description are only exemplary and explanatory, not
It can the limitation present invention.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without having to pay creative labor, can also be obtained according to these attached drawings other attached drawings.In addition, these are situated between
Continue the restriction not formed to embodiment, and the element with same reference numbers label is expressed as similar element in attached drawing, removes
Non- have a special statement, and composition does not limit the figure in attached drawing.
Fig. 1 is according to the pallet schematic diagram shown in an exemplary embodiment of the invention；
Fig. 2 is the flow chart according to a kind of discharged nitrous oxides control method shown in an exemplary embodiment of the invention；
Fig. 3 is the flow chart according to a kind of discharged nitrous oxides control method shown in an exemplary embodiment of the invention；
Fig. 4 is according to the nitrogen oxide emission control system principle schematic shown in an exemplary embodiment of the invention；
Fig. 5 is the schematic diagram according to a kind of discharged nitrous oxides control device shown in an exemplary embodiment of the invention.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, example is illustrated in the accompanying drawings.Following description is related to
During attached drawing, unless otherwise indicated, the same numbers in different attached drawings represent the same or similar element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
Fig. 1 is according to the pallet schematic diagram shown in an exemplary embodiment of the invention, in Fig. 1, mixture ore trough
Material cloth to be sintered is dispersed on pallet by round roller and nine rod material distributing machines, material is being schemed under the drive of pallet
In move and burn from left to right, the multiple and air exhaust box below pallet can be by flue gas generated in combustion process from burning
It is extracted out under knot trolley.
Fig. 2 is the flow chart according to a kind of discharged nitrous oxides control method shown in an exemplary embodiment of the invention.
It can be used for the equipment such as microcontroller, computer, server as example this method.
Shown in Figure 2, this method may include steps of：
Step S201 obtains the discharge state of current nitrogen oxides.
As an example, obtaining the discharge state of current nitrogen oxides, can include：
Obtain nitrous oxides concentration monitor value current in flue gas；
According to current nitrous oxides concentration monitor value and the relationship of default discharge standard, the row of current nitrogen oxides is determined
Put state.
For example, the default discharge standard of nitrogen oxide NOx can preferred 300mg/Nm3.By investigating current nitrogen oxides
The monitor value of concentration deviates the degree of default discharge standard, can the discharge state of current nitrogen oxides be divided into five classes, i.e., and the
One discharge state, the second discharge state, third discharge state, the 4th discharge state, the 5th discharge state.Following table further provides
A kind of example of each discharge state：
Table 1
Step S202 obtains the current basicity state of material.
As an example, obtaining the current basicity state of material, can include：
Obtain the current basicity of material；
According to the current basicity of material and the relationship of preset basicity a reference value, the current basicity state of material is determined.
For example, basicity a reference value can preferably 1.85.
For how to obtain the basicity of material, the present embodiment is simultaneously not limited, and those skilled in the art can be according to existing
There is technology by detecting and being calculated the value of the basicity of material.
As an example, in the present embodiment according to the current basicity of material with the relationship of basicity a reference value namely according to object
Expect that current basicity deviates the degree of basicity a reference value, the current basicity state of material can be divided into the first basicity state, second
Basicity state, third basicity state, the 4th basicity state, the 5th basicity state.Following table furthermore presents each basicity state
A kind of example：
Table 2
| Basicity state classification | Meaning | Symbol | Corresponding range |
| First basicity state | It is excessively high | UU | >1.92 |
| Second basicity state | It is high | U | [1.89,1.92] |
| Third basicity state | Rationally | OK | [1.81,1.89) |
| 4th basicity state | It is low | L | [1.78,1.81) |
| 5th basicity state | It is too low | LL | [0,1.75) |
It is easily understood that can there is no sequencing between above-mentioned steps S201 and S202.
Step S203, according to discharge state, the material of the current nitrogen oxides current basicity state and preset strategy,
Adjust the proportioning and CaCO of CaO in material3Proportioning.
For the particular content of preset strategy, the present embodiment is simultaneously not limited, and those skilled in the art can be according to not
With demand different scenes and voluntarily select, design, these selections that can use here and design all without departing from the present invention
Spirit and scope.
As an example, shown in Figure 3, the current alkali of discharge state, the material according to the current nitrogen oxides
Degree state and preset strategy adjust the proportioning and CaCO of CaO in material3Proportioning, can include：
Step S301, according to the combination of the discharge state of the current nitrogen oxides and the current basicity state of material,
Corresponding CaO proportioning adjusted values and CaCO are inquired in the preset strategy3Match adjusted value.
Step S302, according to the CaO proportioning adjusted values and CaCO inquired3Adjusted value is matched, CaO in material is adjusted and matches
Than and CaCO3Proportioning.
For example, the preset strategy can include：
I) when the discharge state of the current nitrogen oxides is in the first discharge state or the second discharge state：If institute
It states the current basicity state of material and is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, institute
State CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
Then the CaO proportioning adjusted values is increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If
The current basicity state of the material is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is increase
Add the sum of the second preset value and the second designated value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
Ii) when the discharge state of the current nitrogen oxides is in third discharge state：If the material is current
Basicity state is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, the CaCO3Proportioning
Adjusted value is reduces the first designated value；If the current basicity state of the material is in third basicity state, the CaO matches
Than adjusted value to increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If the material is current
Basicity state be in the 4th basicity state or the 5th basicity state, then CaO proportioning adjusted value is increases by the second preset value
The sum of with the second designated value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
Iii) when the discharge state of the current nitrogen oxides is in the 4th discharge state or five discharge states：If
The current basicity state of the material is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero,
The CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity shape
State, then the CaO proportioning adjusted values is reduce the second preset value, the CaCO3Adjusted value is matched to increase by the 4th preset value；Such as
The current basicity state of material described in fruit is in the 4th basicity state or the 5th basicity state, then the CaO proportionings adjusted value is
Reduce the first preset value, the CaCO3Adjusted value is matched to increase the sum of third preset value and the second designated value.
Wherein, as an example, the current value and the alkali of first designated value and second designated value according to basicity
Degree a reference value determines.
Such as：
First designated value can be | (Rx-R0) × 10 |；
Second designated value can be | (Rx-R0) × 10 |/3.
Wherein Rx is the current value of basicity, and R0 is basicity a reference value.
First, second, third, fourth preset value can be respectively 0.1%, 0.2%, 0.3%, 0.6%.
In addition, in actual production, the proportioning and CaCO of usual CaO3Proportioning exist one allow range (namely
Proportioning constraint), adjust the proportioning and CaCO of CaO3Proportioning after, the proportioning and CaCO of new CaO3Proportioning no more than this permit
Perhaps range, therefore in the present embodiment, the proportioning and CaCO of CaO in material is adjusted3Proportioning before, the method can be with
Including：
Adjusted value and CaCO are matched to the CaO of acquisition according to default constraints3Proportioning adjusted value is modified, wherein institute
Default constraints is stated to include：CaCO after the proportioning of CaO and adjustment after adjustment3Proportioning should all preset allowed band it
It is interior.
As an example, the preset allowed band of the proportioning of CaO all can be (0,5%], CaCO3Proportioning it is preset
Allowed band can be (0,6%].
In addition, can periodically perform the above method namely the method in actual production can also include：
Every predetermined period, the primary above-mentioned CaO from the discharge state to adjustment material for obtain current nitrogen oxides is performed
Proportioning and CaCO3Proportioning the step of.
Predetermined period for example can be 2 hours.
Fig. 4 is according to the nitrogen oxide emission control system principle schematic shown in an exemplary embodiment of the invention.
In Fig. 4, the result of flue gas NOx concentration monitor and discharge standard are input to condition adjudgement unit, obtain the discharge shape of sintering NOx
State, meanwhile, basicity is monitored into the result of basicity calculating in other words and the benchmark of basicity is input to the judging unit of basicity state,
Then the basicity state of sinter will be sintered the discharge state of NOx, the basicity state of sinter and CaO and CaCO3Proportioning about
Beam is input to Controlling model (preset strategy) together, so as to obtain the proportioning of CaO and CaCO3Proportioning should adjust why
Value.
As an example, following table gives a specific example of preset strategy, wherein Rx is the current value of basicity, and R0 is alkali
Spend a reference value：
Table 3
In embodiments of the present invention, according to the current basicity state of the discharge state of current nitrogen oxides, material and default
Strategy adjusts the proportioning and CaCO of CaO in material3Proportioning, it is molten by changing in this way on the basis of sinter basicity is ensured
The composition of agent properly increases the content of CaO, reduce CaCO3Content, the generation of nitrogen oxides can be inhibited, not only
Cost is relatively low, and does not influence the chemical attribute of sinter, ensures the quality of sinter.
Following is apparatus of the present invention embodiment, can be used for performing the method for the present invention embodiment.For apparatus of the present invention reality
The details not disclosed in example is applied, please refers to the method for the present invention embodiment.
Fig. 5 be according to a kind of schematic diagram of discharged nitrous oxides control device shown in an of the invention exemplary embodiment,
Shown in Figure 5, which can include：
Discharge state acquisition module 501, for obtaining the discharge state of current nitrogen oxides；
Basicity state acquisition module 502, for obtaining the current basicity state of material；
Proportioning adjustment module 503, for the current basicity state of discharge state, the material according to the current nitrogen oxides
And preset strategy, adjust material in CaO proportioning and CaCO3Proportioning.
In the present embodiment or other some embodiments of the invention, the discharge state acquisition module is used for：
Obtain nitrous oxides concentration monitor value current in flue gas；
According to current nitrous oxides concentration monitor value and the relationship of default discharge standard, the row of current nitrogen oxides is determined
Put state.
In the present embodiment or other some embodiments of the invention, the basicity state acquisition module is used for：
Obtain the current basicity of material；
According to the current basicity of material and the relationship of preset basicity a reference value, the current basicity state of material is determined.
In the present embodiment or other some embodiments of the invention：
The discharge state of the current nitrogen oxides be divided into the first discharge state, the second discharge state, third discharge state,
4th discharge state, the 5th discharge state；
The current basicity state of the material is divided into the first basicity state, the second basicity state, third basicity state, the 4th
Basicity state, the 5th basicity state；
The proportioning adjustment module is used for：
According to the combination of the discharge state of the current nitrogen oxides and the current basicity state of material, in the default plan
The slightly middle corresponding CaO of inquiry matches adjusted value and CaCO3Match adjusted value；
According to the CaO proportioning adjusted values and CaCO inquired3Adjusted value is matched, adjusts the proportioning and CaCO of CaO in material3
Proportioning.
In the present embodiment or other some embodiments of the invention, the preset strategy includes：
When the discharge state of the current nitrogen oxides is in the first discharge state or the second discharge state：It is if described
The current basicity state of material is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is increase
The sum of second preset value and the second designated value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in third discharge state：If the current basicity of the material
State is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, the CaCO3Proportioning adjustment
It is worth to reduce the first designated value；If the current basicity state of the material is in third basicity state, the CaO proportionings are adjusted
Whole value is increases the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If the current alkali of the material
Degree state is in the 4th basicity state or the 5th basicity state, then CaO proportioning adjusted value is increases the second preset value and the
The sum of two designated values, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in the 4th discharge state or five discharge states：It is if described
The current basicity state of material is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is reduce the second preset value, the CaCO3Adjusted value is matched to increase by the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is reduce
First preset value, the CaCO3Adjusted value is matched to increase the sum of third preset value and the second designated value.
In the present embodiment or other of the invention some embodiments, first designated value and second designated value according to
The current value of basicity and the basicity a reference value determine.
In the present embodiment or other some embodiments of the invention, the proportioning adjustment module is additionally operable to：
Adjusted value and CaCO are matched to the CaO of acquisition according to default constraints3Proportioning adjusted value is modified, wherein institute
Default constraints is stated to include：CaCO after the proportioning of CaO and adjustment after adjustment3Proportioning should all preset allowed band it
It is interior.
In the present embodiment or other some embodiments of the invention, described device further includes：
Loop control module, for every predetermined period, performing primary above-mentioned from the discharge shape for obtaining current nitrogen oxides
The proportioning and CaCO of CaO in state to adjustment material3Proportioning the step of.
In embodiments of the present invention, according to the current basicity state of the discharge state of current nitrogen oxides, material and default
Strategy adjusts the proportioning and CaCO of CaO in material3Proportioning, it is molten by changing in this way on the basis of sinter basicity is ensured
The composition of agent properly increases the content of CaO, reduce CaCO3Content, the generation of nitrogen oxides can be inhibited, not only
Cost is relatively low, and does not influence the chemical attribute of sinter, ensures the quality of sinter.
About the device in above-described embodiment, wherein each unit module perform the concrete mode of operation related
It is described in detail in the embodiment of this method, explanation will be not set forth in detail herein.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice invention disclosed herein
Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or
Person's adaptive change follows the general principle of the present invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as illustratively, and true scope and spirit of the invention are by appended
Claim is pointed out.
It should be understood that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by appended claim.
Claims (16)
1. a kind of discharged nitrous oxides control method, which is characterized in that the method includes：
Obtain the discharge state of current nitrogen oxides；
Obtain the current basicity state of material；
According to discharge state, the material of the current nitrogen oxides current basicity state and preset strategy, CaO in material is adjusted
Proportioning and CaCO3Proportioning.
2. according to the method described in claim 1, it is characterized in that, obtain the discharge state of current nitrogen oxides, including：
Obtain nitrous oxides concentration monitor value current in flue gas；
According to current nitrous oxides concentration monitor value and the relationship of default discharge standard, the discharge shape of current nitrogen oxides is determined
State.
3. according to the method described in claim 1, it is characterized in that, obtain the current basicity state of material, including：
Obtain the current basicity of material；
According to the current basicity of material and the relationship of preset basicity a reference value, the current basicity state of material is determined.
4. according to the method described in claim 1, it is characterized in that：
The discharge state of the current nitrogen oxides is divided into the first discharge state, the second discharge state, third discharge state, the 4th
Discharge state, the 5th discharge state；
The current basicity state of the material is divided into the first basicity state, the second basicity state, third basicity state, the 4th basicity
State, the 5th basicity state；
According to discharge state, the material of the current nitrogen oxides current basicity state and preset strategy, CaO in material is adjusted
Proportioning and CaCO3Proportioning, including：
According to the combination of the discharge state of the current nitrogen oxides and the current basicity state of material, in the preset strategy
Inquire corresponding CaO proportioning adjusted values and CaCO3Match adjusted value；
According to the CaO proportioning adjusted values and CaCO inquired3Adjusted value is matched, adjusts the proportioning and CaCO of CaO in material3Match
Than.
5. according to the method described in claim 4, it is characterized in that, the preset strategy includes：
When the discharge state of the current nitrogen oxides is in the first discharge state or the second discharge state：If the material
Current basicity state is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is increase
The sum of second preset value and the second designated value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in third discharge state：If the current basicity state of the material
In the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, the CaCO3Matching adjusted value is
Reduce the first designated value；If the current basicity state of the material is in third basicity state, the CaO matches adjusted value
To increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If the current basicity shape of the material
State is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values refer to increase the second preset value and second
The sum of definite value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in the 4th discharge state or five discharge states：If the material
Current basicity state is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is reduce the second preset value, the CaCO3Adjusted value is matched to increase by the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is reduce
First preset value, the CaCO3Adjusted value is matched to increase the sum of third preset value and the second designated value.
6. according to the method described in claim 5, it is characterized in that, first designated value and second designated value are according to alkali
The current value of degree and the basicity a reference value determine.
7. according to the method described in claim 1, it is characterized in that, in material is adjusted CaO proportioning and CaCO3Proportioning it
Before, the method further includes：
Adjusted value and CaCO are matched to the CaO of acquisition according to default constraints3Proportioning adjusted value is modified, wherein described pre-
If constraints includes：CaCO after the proportioning of CaO and adjustment after adjustment3Proportioning should all be within preset allowed band.
8. according to the method described in claim 1, it is characterized in that, the method further includes：
Every predetermined period, matching for the primary above-mentioned CaO from the discharge state to adjustment material for obtain current nitrogen oxides is performed
Than and CaCO3Proportioning the step of.
9. a kind of discharged nitrous oxides control device, which is characterized in that described device includes：
Discharge state acquisition module, for obtaining the discharge state of current nitrogen oxides；
Basicity state acquisition module, for obtaining the current basicity state of material；
Proportioning adjustment module, for the current basicity state of discharge state, the material according to the current nitrogen oxides and presets
Strategy adjusts the proportioning and CaCO of CaO in material3Proportioning.
10. device according to claim 9, which is characterized in that the discharge state acquisition module is used for：
Obtain nitrous oxides concentration monitor value current in flue gas；
According to current nitrous oxides concentration monitor value and the relationship of default discharge standard, the discharge shape of current nitrogen oxides is determined
State.
11. device according to claim 9, which is characterized in that the basicity state acquisition module is used for：
Obtain the current basicity of material；
According to the current basicity of material and the relationship of preset basicity a reference value, the current basicity state of material is determined.
12. device according to claim 9, it is characterised in that：
The discharge state of the current nitrogen oxides is divided into the first discharge state, the second discharge state, third discharge state, the 4th
Discharge state, the 5th discharge state；
The current basicity state of the material is divided into the first basicity state, the second basicity state, third basicity state, the 4th basicity
State, the 5th basicity state；
The proportioning adjustment module is used for：
According to the combination of the discharge state of the current nitrogen oxides and the current basicity state of material, in the preset strategy
Inquire corresponding CaO proportioning adjusted values and CaCO3Match adjusted value；
According to the CaO proportioning adjusted values and CaCO inquired3Adjusted value is matched, adjusts the proportioning and CaCO of CaO in material3Match
Than.
13. device according to claim 12, which is characterized in that the preset strategy includes：
When the discharge state of the current nitrogen oxides is in the first discharge state or the second discharge state：If the material
Current basicity state is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is increase
The sum of second preset value and the second designated value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in third discharge state：If the current basicity state of the material
In the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, the CaCO3Matching adjusted value is
Reduce the first designated value；If the current basicity state of the material is in third basicity state, the CaO matches adjusted value
To increase the second preset value, the CaCO3Adjusted value is matched to reduce the 4th preset value；If the current basicity shape of the material
State is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values refer to increase the second preset value and second
The sum of definite value, the CaCO3Adjusted value is matched to reduce the 4th preset value；
When the discharge state of the current nitrogen oxides is in the 4th discharge state or five discharge states：If the material
Current basicity state is in the first basicity state or the second basicity state, then the CaO proportionings adjusted value is zero, described
CaCO3Adjusted value is matched to reduce the first designated value；If the current basicity state of the material is in third basicity state,
The CaO proportioning adjusted values is reduce the second preset value, the CaCO3Adjusted value is matched to increase by the 4th preset value；If institute
It states the current basicity state of material and is in the 4th basicity state or the 5th basicity state, then the CaO proportioning adjusted values is reduce
First preset value, the CaCO3Adjusted value is matched to increase the sum of third preset value and the second designated value.
14. device according to claim 13, which is characterized in that first designated value and second designated value according to
The current value of basicity and the basicity a reference value determine.
15. device according to claim 9, which is characterized in that the proportioning adjustment module is additionally operable to：
Adjusted value and CaCO are matched to the CaO of acquisition according to default constraints3Proportioning adjusted value is modified, wherein described pre-
If constraints includes：CaCO after the proportioning of CaO and adjustment after adjustment3Proportioning should all be within preset allowed band.
16. device according to claim 9, which is characterized in that described device further includes：
Loop control module, for every predetermined period, perform it is primary it is above-mentioned from obtain the discharge state of current nitrogen oxides to
Adjust the proportioning and CaCO of CaO in material3Proportioning the step of.
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| CN201611259145.9A CN108267023B (en) | 2016-12-30 | 2016-12-30 | Nitrogen oxide emission control method and device |
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| CN201611259145.9A CN108267023B (en) | 2016-12-30 | 2016-12-30 | Nitrogen oxide emission control method and device |
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