CN207805349U - denitration control system - Google Patents
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- CN207805349U CN207805349U CN201721857848.1U CN201721857848U CN207805349U CN 207805349 U CN207805349 U CN 207805349U CN 201721857848 U CN201721857848 U CN 201721857848U CN 207805349 U CN207805349 U CN 207805349U
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- 239000003546 flue gas Substances 0.000 claims abstract description 92
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000005070 sampling Methods 0.000 claims abstract description 91
- 239000000779 smoke Substances 0.000 claims abstract description 60
- 239000003245 coal Substances 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 29
- 238000004868 gas analysis Methods 0.000 claims description 20
- 239000003638 chemical reducing agent Substances 0.000 abstract description 16
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 99
- 238000004458 analytical method Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 241000628997 Flos Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
This application provides a kind of denitration control systems.The denitration control system includes the separator unit being sequentially communicated, economizer unit and air preheater unit, and separator unit is connected to the burner hearth of boiler, and denitration control system further includes：Smoke sampling measuring unit, the flue between economizer unit and air preheater unit are connected to, and smoke sampling measuring unit measures the NO in sample for obtaining the sample of flue gas in the flue between economizer unit and air preheater unitxContent.In the denitration control system, the flue between smoke sampling measuring unit and the entrance of the outlet air preheater unit of coal device unit is connected to, NO can be relatively accurately controlledxDischarge capacity to meet emission request, also, the dosage of reducing agent can also be accurately controlled, avoid its waste, to more economical environmental protection.
Description
Technical field
This application involves denitration fields, in particular to a kind of denitration control system.
Background technology
Nitrogen oxides (NOx) is the gas generated due to the oxidation of nitrogen during burning process, it not only stimulates people
Respiratory system, damage animals and plants, destroy ozone layer, and be also to cause greenhouse effects, acid rain and photochemically reactive main
One of substance.All over the world to the discharge of NOx limitation require all tend to be stringent, and thermal power plant discharged as NOx gases it is most main
It is even more by attention especially to want source, emission reduction.
SNCR (selective non-catalytic reduction method) is a kind of NOx control technologies of mature, SNCR cardinal principles be
Do not have under catalyst action, nitrogen agent is sprayed into 850~1150 DEG C of high-temperature flue gas, reducing agent reacts generation with NOx in flue gas
NH3.CFB (circulating fluidized bed boiler circulating fluidized bed boiler) NOx emission itself is low, with ultralow
The implementation of discharge, thermal power plant's NOx emission limit value are up to 50mg/Nm3Below.Because CFB is the high grey type of furnace, this is for implementing
SCR difficulty is larger, implements SNCR technologies and will be the most economical means of CFB.
At present about CFB-SNCR engineerings using more, common system includes the CFB furnace thorax being sequentially communicated, several
Separator, several reheaters, several high temperature superheaters, several low temperature superheaters, two level economizer, level-one economizer and several
Air preheater.SNCR denitration conversion zone, to economizer section, no longer has reaction condition in separator after economizer.
There are more problem, one of main problems to be for existing CFB-SNCR technologies：NOx reacts raw in the separator
At by economizer, the equipment such as air preheater reach the measured places floss hole NOx (at chimney entrance horizontal flue), analyzed through NOx
Instrument measures NOx value, has lagged 5-6 minutes；And NOx devices extraction-type pipeline also reaches 50 meters or more at floss hole, more increases
It is dynamic phenomena measurement value lag time, final so that NOx control deviations are big, stability is poor, reducing agent consumption is high, power plant's operation
Cost increases.
Utility model content
The main purpose of the application is to provide a kind of denitration control system, to solve NOx analyzers in the prior art
Measurement result lag caused by NOx control deviations it is big the problems such as.
To achieve the goals above, this application provides a kind of denitration control system, which includes successively
Separator unit, economizer unit and the air preheater unit of connection, above-mentioned separator unit is connected to the burner hearth of boiler, above-mentioned
Denitration control system further includes：Cigarette between smoke sampling measuring unit, with above-mentioned economizer unit and above-mentioned air preheater unit
Road is connected to, and above-mentioned smoke sampling measuring unit in the flue between above-mentioned economizer unit and above-mentioned air preheater unit for taking
The sample of flue gas is obtained, and measures the content of the NOx in above-mentioned sample.
Further, above-mentioned smoke sampling measuring unit includes：At least one flue gas sampling equipment, with above-mentioned economizer list
Flue connection between first and above-mentioned air preheater unit；Smoke gas analysis equipment is connected to above-mentioned flue gas sampling equipment, for measuring
The content of NOx in above-mentioned sample.
Further, above-mentioned flue gas sampling equipment is multiple, and multiple above-mentioned flue gas sampling equipments are spaced apart.
Further, above-mentioned flue gas sampling equipment is four, and respectively the first flue gas sampling equipment, the second smoke sampling are set
Standby, third flue gas sampling equipment and the 4th flue gas sampling equipment, and four above-mentioned flue gas sampling equipments are evenly distributed on above-mentioned cigarette
The both sides in road.
Further, above-mentioned smoke sampling measuring unit further includes：Flue gas mixing apparatus, above-mentioned flue gas mixing apparatus enter
Mouth is respectively communicated with multiple above-mentioned flue gas sampling equipments, and the outlet of above-mentioned flue gas mixing apparatus connects with above-mentioned smoke gas analysis equipment
Logical, above-mentioned flue gas mixing apparatus is used to mix in the sample that multiple above-mentioned flue gas sampling equipments obtain.
Further, the first feed-line, for being connected to each above-mentioned flue gas sampling equipment and above-mentioned flue gas mixing apparatus；The
Two feed-lines, for being connected to above-mentioned flue gas mixing apparatus and above-mentioned smoke gas analysis equipment.
Further, control device is electrically connected with above-mentioned smoke gas analysis equipment, for according to the NOx's in above-mentioned sample
Content controls the discharge capacity of the exit NOx of above-mentioned denitration control system.
Further, above-mentioned control device includes DCS control devices and/or PLC control devices.
Further, above-mentioned control device is electrically connected with Central Control Room.
Further, above-mentioned flue gas sampling equipment is popped one's head in for smoke sampling.
Using the technical solution of the application, which haves no need to change existing boiler plant, it is only necessary to will
Smoke sampling measuring unit is exported with economizer unit and is connected to i.e. with the denitration exhaust pass insertion between air preheater unit entrance
It can.In use, spraying denitrification reducing agent into separator, by reacting in the separator, economizer exit can be reached quickly
In flue between air preheater entrance, smoke sampling measuring unit is sampled and is measured from there, compared with prior art in
It is sampled at horizontal flue, sampling analysis postpones very little here, can relatively accurately control the discharge capacity of NOx to meet discharge
It is required that also, the dosage of reducing agent can also be accurately controlled, its waste is avoided, to more economical environmental protection.
Also, increased smoke sampling measuring unit, without influence, invests smaller, short time limit to boiler wind and smoke system resistance,
Blowing out is not needed.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 shows the structural schematic diagram of the denitration control system provided according to a kind of embodiment of the application.
Wherein, above-mentioned attached drawing includes the following drawings label：
01, the burner hearth of boiler；02, separator；03, economizer；04, air preheater；1, the first flue gas sampling equipment；2, second
Flue gas sampling equipment；3, third flue gas sampling equipment；4, the 4th flue gas sampling equipment；5, the first feed-line；6, flue gas mixes
Equipment；7, the second feed-line；8, smoke gas analysis equipment；9, cable；10, control device；11, cable；12, Central Control Room；13, former
Sample point.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, in the prior art, NOx controls caused by the measurement result lag of NOx analyzers
Deviation it is larger, in order to solve technical problem as above, present applicant proposes a kind of denitration control systems.
In a kind of typical embodiment of the application, a kind of denitration control system is provided, as shown in Figure 1, the denitration
Control system is sequentially communicated, economizer unit and air preheater unit, wherein separator unit includes at least one separator
02, economizer unit includes at least one economizer 03, and air preheater unit includes at least one air preheater 04, the area of denitration reaction
Domain no longer has reaction condition in separator unit to the flue between economizer unit after economizer.Above-mentioned separator
Unit is connected to the burner hearth 01 of boiler, and above-mentioned denitration control system further includes：Smoke sampling measuring unit and above-mentioned economizer list
Flue connection between first and above-mentioned air preheater unit, above-mentioned smoke sampling measuring unit be used for from above-mentioned economizer unit and
The sample for obtaining flue gas in the flue between air preheater unit is stated, and measures the content of the NOx in above-mentioned sample.
Above-mentioned denitration control system haves no need to change existing boiler plant, it is only necessary to by smoke sampling measuring unit with
Flue connection between the entrance of the outlet air preheater unit of coal device unit.In use, by denitrification reducing agent spray to point
From in device, by reaction in the separator, NH is generated3, and flue gas can reach quickly economizer exit and air preheater entrance it
Between flue in, smoke sampling measuring unit is sampled and is measured from there, compared with prior art at horizontal flue sample,
Sampling analysis postpones very little here, can relatively accurately control the discharge capacity of NOx to meet emission request, also, may be used also
To accurately control the dosage of reducing agent, its waste is avoided, to more economical environmental protection.The position of former sample point 13 is as shown in Figure 1.
Also, increased smoke sampling measuring unit, without influence, invests smaller, short time limit to boiler wind and smoke system resistance,
Blowing out is not needed.
As shown in Figure 1, in a kind of embodiment of the application, above-mentioned smoke sampling measuring unit includes that at least one flue gas takes
Sample equipment and smoke gas analysis equipment 8, the cigarette between flue gas sampling equipment and above-mentioned economizer unit and above-mentioned air preheater unit
Road is connected to；Smoke gas analysis equipment 8 is connected to above-mentioned flue gas sampling equipment, the content for measuring the NOx in above-mentioned sample.In this way
It may further ensure that the denitration control system can rapidly measure to obtain the content of NOx in flue gas, to alleviate or eliminate
The lag issues of the content measuring result of NOx, and then the discharge capacity of NOx can be more accurately controlled to meet emission request, and
And the dosage of reducing agent can also be accurately controlled, its waste is avoided, to more economical environmental protection.
In order to further accurately measure containing for NOx in the flue gas in the flue between economizer unit and air preheater unit
It measures, in a kind of embodiment of the application, as shown in Figure 1, above-mentioned flue gas sampling equipment is multiple, and multiple above-mentioned smoke samplings are set
It is standby to be spaced apart.
In another embodiment of the application, as shown in Figure 1, above-mentioned flue gas sampling equipment is four, respectively the first cigarette
Gas sampling equipment 1, the second flue gas sampling equipment 2, third flue gas sampling equipment 3 and the 4th flue gas sampling equipment 4, and four are above-mentioned
Flue gas sampling equipment is evenly distributed on the both sides of above-mentioned flue, i.e., the sampling region in flue is uniformly distributed so that is taken each
After the sample obtained in sample region mixes in smoke gas analysis equipment 8, the flue gas in flue can be more represented, so that flue gas
The content of NOx is more close between above-mentioned economizer unit and above-mentioned air preheater unit in the flue gas that analytical equipment is analyzed
The real content of the NOx in flue gas in flue, even if the result that must be analyzed is more accurate.
In order to which the sample for the flue gas for obtaining four flue gas sampling equipments mixes more uniform, so that flue gas analysis
The content of NOx is more nearly the real content of the NOx in flue gas, a kind of embodiment of the application in the flue gas that device analysis obtains
In, as shown in Figure 1, above-mentioned smoke sampling measuring unit further includes flue gas mixing apparatus 6, the entrance of above-mentioned flue gas mixing apparatus 6
It is respectively communicated with multiple above-mentioned flue gas sampling equipments, and the outlet of above-mentioned flue gas mixing apparatus 6 connects with above-mentioned smoke gas analysis equipment 8
Logical, above-mentioned flue gas mixing apparatus 6 is used to mix in the sample that multiple above-mentioned flue gas sampling equipments obtain.
In the another embodiment of the application, as shown in Figure 1, above-mentioned smoke sampling measuring unit further includes the first delivery pipe
Line 5 and the second feed-line 7, the first feed-line 5 is for being connected to each above-mentioned flue gas sampling equipment and above-mentioned flue gas mixing apparatus
6；Second feed-line 7 is for being connected to above-mentioned flue gas mixing apparatus 6 and above-mentioned smoke gas analysis equipment 8.
In order to preferably control denitration control system exit NOx discharge capacity, as shown in Figure 1, one kind of the application
In embodiment, above-mentioned smoke sampling measuring unit further includes control device 10, control device 10 and 8 electricity of above-mentioned smoke gas analysis equipment
Connection, exit NOx of the control device 10 for controlling above-mentioned denitration control system according to the content of the NOx in above-mentioned sample
Discharge capacity.
The control device of the application can be the control device of any type in the prior art, as long as it can be according to cigarette
The analysis result of qi leel desorption device controls the discharge capacity of the exit NOx of above-mentioned denitration control system.
In the another embodiment of the application, above-mentioned control device 10 includes that DCS control devices 10 and/or PLC controls are set
Standby 10.And in a kind of specific embodiment, as shown in Figure 1, above-mentioned DCS control devices are DCS switch boards, and smoke gas analysis equipment
It is electrically connected with DCS switch boards by cable 9.
In the another embodiment of the application, above-mentioned smoke gas analysis equipment is conveyed to analyzing after obtained signal is handled
Into DCS control devices.
DCS control devices are exactly decentralised control equipment, and general custom is referred to as collecting and distributing control device, and PLC control devices are
Programmable control device, it is one and is counted by the multistage of tie of communication network by what process control level and process monitoring level formed
The equipment of calculation machine.
In order to enable staff can efficiently and rapidly monitor the analysis result of smoke gas analysis equipment, mainly in flue gas
The content of NOx, and it is possible to control the work of other equipment, such as control NOx discharge and reduction according to analysis result
The content of agent, in a kind of embodiment of the application, above-mentioned control device 10 is electrically connected with Central Control Room 12.The Central Control Room refers to engineering
Teacher stands and operator station.
As shown in Figure 1, in a kind of specific embodiment, above-mentioned Central Control Room 12 is electrically connected by cable 11 and control device 10
It connects.
In a kind of embodiment of the application, in order to enable flue gas sampling equipment can be more efficient quick and accurately gets cigarette
Fume sample in road, in a kind of embodiment of the application, above-mentioned flue gas sampling equipment is smoke sampling probe.
Certainly, the flue gas sampling equipment of the application is not limited to above-mentioned smoke sampling probe, can also be in this field
Other flue gas sampling equipments, those skilled in the art can be selected according to actual conditions suitable flue gas sampling equipment come into
Row smoke sampling.
In another embodiment of the application, above-mentioned boiler is CFB boiler, and the burner hearth of boiler is CFB furnace thorax, and is being detached
It is disposed with reheater unit and super heater unit between device unit and economizer unit.Wherein, reheater unit includes extremely
A few low-temperature reheater and a high temperature reheater, super heater unit include at least one high temperature superheater set gradually and
At least one low temperature superheater.
In the another embodiment of the application, above-mentioned economizer unit includes sequentially connected two economizers, is respectively
First economizer and the second economizer, and the flue between smoke sampling measuring unit and the second economizer and air preheater unit connects
Logical, specifically the flue between the second economizer exit and air preheater unit is connected to.
In the another embodiment of the application, the denitration control system of the application is SNCR denitration control system, that is, is not being had
Have under catalyst action, nitrogen agent is sprayed into 850~1150 DEG C of high-temperature flue gas, reducing agent is reacted with NOx in flue gas generates NH3。
The principle of the dosage of reducing agent is specifically controlled in the application is：By the SP values of the NOx of setting with NOx's in the process
The deviation of PV values, to control the aperture of reducing agent regulating valve, to change the straying quatity of separator reducing agent.
The denitration control system of the application, reducing agent are fully reacted with flue gas in the separator, low by high temperature reheater
Warm reheater, economizer, air preheater, deduster, air-introduced machine, desulfurization island etc. are finally discharged into greatly after horizontal flue to smokestack
Gas, the so more equipment flue gases of process from separator the reaction was complete reach horizontal flue by smoke sampling probe sampling, using
Show that the PV values of NOx, the variation to the NOx for being finally reflected smoke stack emission mouth can lag general 5 after smoke gas analysis equipment analysis
Minute or so, to the system of this large time delay, control accuracy itself is difficult to ensure or even uncontrollable.Pass through the utility model
Flue gas sampling equipment has been mounted between the flue between economizer unit and air preheater unit, has been arranged measurement data as NOx
It puts value and automatically controls the foundation responded in advance, this substantially reduces lag times, so that can be very good control NOx emission
Concentration realizes that NOx real-time responses automatically control, reduces reducing agent usage amount, achieve the purpose that both economically and environmentally beneficial.
It can be seen from the above description that the application the above embodiments realize following technique effect：
The denitration control system of the application haves no need to change existing boiler plant, it is only necessary to by smoke sampling measuring unit
Flue between the entrance of the outlet air preheater unit of coal device unit is connected to.In use, by denitrification reducing agent spray to
In separator, by reacting in the separator, flue gas can be reached quickly in the flue between economizer exit and air preheater entrance,
Smoke sampling measuring unit is sampled and is measured from there, compared with prior art at horizontal flue sample, sample here
Analysis delay very little, can relatively accurately control the discharge capacity of NOx to meet emission request, also, can also accurately control
The dosage of reducing agent avoids its waste, to more economical environmental protection.
Also, increased smoke sampling measuring unit, without influence, invests smaller, short time limit to boiler wind and smoke system resistance,
Blowing out is not needed.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of denitration control system, which is characterized in that the denitration control system includes the separator unit being sequentially communicated, saves
Coal device unit and air preheater unit, the separator unit are connected to the burner hearth (01) of boiler, and the denitration control system is also
Including：
Smoke sampling measuring unit, the flue between the economizer unit and the air preheater unit are connected to, the flue gas
Sample of the sampling and measuring unit for obtaining flue gas in the flue between the economizer unit and the air preheater unit, and
Measure the content of the NOx in the sample.
2. denitration control system according to claim 1, which is characterized in that the smoke sampling measuring unit includes：
At least one flue gas sampling equipment, the flue between the economizer unit and the air preheater unit are connected to；And
Smoke gas analysis equipment (8), is connected to the flue gas sampling equipment, the content for measuring the NOx in the sample.
3. denitration control system according to claim 2, which is characterized in that the flue gas sampling equipment is multiple and more
A flue gas sampling equipment is spaced apart.
4. denitration control system according to claim 2, which is characterized in that the flue gas sampling equipment is four, respectively
It is set with the 4th smoke sampling for the first flue gas sampling equipment (1), the second flue gas sampling equipment (2), third flue gas sampling equipment (3)
Standby (4), and four flue gas sampling equipments are evenly distributed on the both sides of the flue.
5. denitration control system according to claim 3, which is characterized in that the smoke sampling measuring unit further includes：
Flue gas mixing apparatus (6), entrance and the multiple flue gas sampling equipments of the flue gas mixing apparatus (6) are respectively communicated with,
And the outlet of the flue gas mixing apparatus (6) is connected to the smoke gas analysis equipment (8), the flue gas mixing apparatus (6) is used for
The sample that multiple flue gas sampling equipments obtain is mixed.
6. denitration control system according to claim 5, which is characterized in that the smoke sampling measuring unit further includes：
First feed-line (5), for being connected to each flue gas sampling equipment and the flue gas mixing apparatus (6)；And
Second feed-line (7), for being connected to the flue gas mixing apparatus (6) and the smoke gas analysis equipment (8).
7. denitration control system according to claim 2, which is characterized in that the smoke sampling measuring unit further includes：
Control device (10) is electrically connected with the smoke gas analysis equipment (8), for the content control according to the NOx in the sample
Make the discharge capacity of the exit NOx of the denitration control system.
8. denitration control system according to claim 7, which is characterized in that the control device (10) includes DCS controls
Equipment and/or PLC control devices.
9. denitration control system according to claim 7, which is characterized in that the control device (10) and Central Control Room (12)
Electrical connection.
10. denitration control system according to claim 2, which is characterized in that the flue gas sampling equipment is smoke sampling
Probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721857848.1U CN207805349U (en) | 2017-12-26 | 2017-12-26 | denitration control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721857848.1U CN207805349U (en) | 2017-12-26 | 2017-12-26 | denitration control system |
Publications (1)
| Publication Number | Publication Date |
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| CN207805349U true CN207805349U (en) | 2018-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203827A (en) * | 2020-03-03 | 2021-08-03 | 大唐环境产业集团股份有限公司 | Multi-path sampling mixing stirring measurement NOxMethod and apparatus |
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2017
- 2017-12-26 CN CN201721857848.1U patent/CN207805349U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203827A (en) * | 2020-03-03 | 2021-08-03 | 大唐环境产业集团股份有限公司 | Multi-path sampling mixing stirring measurement NOxMethod and apparatus |
| CN113203827B (en) * | 2020-03-03 | 2023-09-29 | 大唐环境产业集团股份有限公司 | NO is measured in multichannel sampling mixing stirring x Method and apparatus of (a) |
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