CN206132125U - Flue total cross -section nitrogen oxide on line measurement system for SCR denitrification process - Google Patents
Flue total cross -section nitrogen oxide on line measurement system for SCR denitrification process Download PDFInfo
- Publication number
- CN206132125U CN206132125U CN201621154953.4U CN201621154953U CN206132125U CN 206132125 U CN206132125 U CN 206132125U CN 201621154953 U CN201621154953 U CN 201621154953U CN 206132125 U CN206132125 U CN 206132125U
- Authority
- CN
- China
- Prior art keywords
- flue
- measurement system
- line measurement
- total cross
- nitrogen oxides
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a nitrogen oxide on line measurement system, especially a flue total cross -section nitrogen oxide on line measurement system for SCR denitrification process. It includes a plurality of sampling device (2), monitoring analytical equipment (4) and sampling channel (5), and monitoring analytical equipment (4) is connected with sampling channel (5), is equipped with a plurality of sampling channel branch road (6) on sampling channel (5), is equipped with two at least sampling device (2) on every sampling channel branch road (6), and sampling device (2) are located denitration flue (1), and a plurality of sampling device (2) are the matrix and distribute. This system can realize the multiple spot and test according to the sample at line number, has improved test data authenticity and work efficiency, has further improved denitrification process regulation nature and the degree of becoming more meticulous.
Description
Technical field
This utility model is related to a kind of nitrogen oxides on-line measurement system, and particularly a kind of SCR denitration technique is complete with flue
Section nitrogen oxides on-line measurement system.
Background technology
As country is controlled increasingly strictly to coal-burning power plant's nitrogen oxides, emission limit is more and more lower, and denitrating technique is thrown
Enter and require also increasingly stricter, it is normal not require nothing more than denitrating system input, and the modulability to SCR denitration technique and fine
Change and require also to step up.SCR denitration process adjustments and the degree that becomes more meticulous are poor at present.As unit load change, burner
When condition is adjusted, inlet flue gas flow field change is larger, and flue gas flow field is uneven, and nitrogen oxides distribution field is uneven, causes to spray ammonia lattice
Grid are sprayed ammonia flow and are mismatched with nitrogen oxides distribution, and ammonia nitrogen mixing is uneven, and ammonia utilization rate declines, and denitration performance declines.This
When need according to inlet nitrogen oxides concentration distribution, adjustment spray ammonia flow, to improve ammonia nitrogen mixability, improves ammonia and utilizes
Rate.At present, testing and debugging is carried out using portable tester mainly, inconvenient operation, workload are big.In addition, gas approach nitrogen
Oxide measuring point is spot measurement, is affected by inlet flue gas flow field factor, and measurement data is unstable, and numerical bias are larger, it is impossible to
Actual response inlet nitrogen oxides situation.
Utility model content
The purpose of this utility model is, there is provided a kind of flue total cross-section nitrogen oxides on-line measurement of SCR denitration technique
System.The system can realize multiple spot online data sampling and testing, can switch sample point at any time, improve test data true
Property and work efficiency, further increase denitrating technique modulability and become more meticulous degree.
To solve above-mentioned technical problem, this utility model is adopted the following technical scheme that：
This kind of SCR denitration technique flue total cross-section nitrogen oxides on-line measurement system includes several samplers, prison
Survey analytical equipment and sampling pipe.The sampler is transported to device for monitoring and analyzing, the monitoring analysis for gathering flue gas
Device adopts CEMS systems, i.e. smoke on-line monitoring system.The CEMS systems include gaseous contaminant monitoring subsystem, granule
Thing monitoring subsystem, Gas Parameters monitoring subsystem and data acquisition process and communication subsystem.The gaseous contaminant monitoring
Subsystem is mainly used in concentration and the total emission volumn for monitoring nitrogen oxides etc. in gaseous contaminant.The particle monitoring subsystem
It is mainly used to monitor the concentration and total emission volumn of flue dust.The Gas Parameters monitoring subsystem be mainly used to measure flue gas flow rate,
Flue-gas temperature, flue gas pressures, flue gas oxygen content, smoke moisture etc., for the conversion of the integrating and related concentrations of total emission volumn.Institute
State data acquisition process to be made up of data acquisition unit and computer system with communication subsystem, Real-time Collection parameters, generate
The corresponding butt of each concentration value, wet basis and conversion concentration, generate day, the moon, the accumulation discharge capacity in year, complete to lose the compensation of data
And form will be obtained.The device for monitoring and analyzing is connected with sampling pipe, and the sampling pipe is provided with some sampling pipes
Branch road, every sampling pipe branch road are provided with least two samplers, and the sampler is located in denitration flue, if described
A dry sampler is uniformly distributed in matrix form.The matrix form multiple spot of sampler is arranged, compared to existing technology in single-point survey
Amount, multiple sample points can more react the distribution situation of each position nitrogen oxides etc. in flue, reduce the deviation of measurement data,
Improve the stability of measurement data.The system is additionally provided with blow device, and the blow device exit is communicated with laterally purging
Some purging branch roads are equipped with pipeline and longitudinal direction purging pipeline, the horizontal purging pipeline and longitudinal direction purging pipeline, it is described
The orthogonal thereto distribution of purging branch road, improves flue gas circulation and the flue gas mixability in flue, realizes online ash removal purging, protect
The unimpeded of sampling line is demonstrate,proved, blocking and abrasion of the dust to sampler in flue gas is greatly reduced, is reduced purging number of times.
In order to reduce the blocking to sampling line and the damage to device for monitoring and analyzing, aforesaid sampler is fixed
On flue support, on the sampler, defecator is equipped with.Bulky grain filtrating smoke dust is fallen by the defecator so that
Gas sampled dustiness is reduced.
Aforesaid sampler exit is equipped with electromagnetic valve, for controlling opening for sampler place sampling pipe branch road
Close.
Electromagnetic valve also is provided with aforesaid horizontal purging pipeline, longitudinal direction purging pipeline and purging branch road, for controlling purging
The opening and closing of pipeline.After choosing test sample point, blow device laterally, longitudinal direction purge, but do not purge sample point place row and
Row, improve the degree of accuracy of sample point.
In order to further improve the accuracy of sampled data, show that aforesaid sampler is taken described through practical experience
Spacing on sample pipeline branch road is 1050-1400 ㎜, and now measurement data is better.
Aforesaid electromagnetic valve is electrically connected with control system.Control system is used to control each sampling line solenoid
Open and-shut mode, so as to specified sampler is connected with device for monitoring and analyzing.Control system is additionally operable to control each scavenging conduit
The open and-shut mode of road solenoid, so as to by specified blow device with purging pipeline communication.
Aforesaid SCR denitration technique flue total cross-section nitrogen oxides on-line measurement system is arranged at smoke inlet spray ammonia lattice
Before coral or at exhaust pass.When unit load changes or flow field changes, this measuring system can be used for ammonia-spraying grid tune
Whole on-line testing data, so as to improve work efficiency and denitrating system modulability and denitration performance.
Compared with prior art, test number is provided to spray ammonia adjustment before this utility model is arranged on smoke inlet ammonia-spraying grid
According to, or smoke test data at exhaust pass, are gathered, multiple spot online data sampling and testing is realized, sample point can be switched at any time,
Test data verity and work efficiency are improve, is not affected system operation real time data to measure, is further increased denitration work
Skill modulability and the degree that becomes more meticulous, and then reduce the escaping of ammonia, save ammonia consumption.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
The implication of reference：1- flues, 2- samplers, 3- defecators, 4- device for monitoring and analyzing, 5- probe tubes
Road, 6- sampling pipe branch roads, 7- electromagnetic valves, 8- blow devices, 9- laterally purge pipeline, and 10- longitudinally purges pipeline, 11- purgings
Branch road.
With reference to the accompanying drawings and detailed description this utility model is further described.
Specific embodiment
Embodiment of the present utility model 1：As shown in figure 1, this kind of nitrogen oxides on-line measurement system includes 16 samplings
Device 2, device for monitoring and analyzing 4 and sampling pipe 5.Sampler 2 is transported to device for monitoring and analyzing 4 for gathering flue gas, monitors
Analytical equipment 4 adopts CEMS systems, i.e. smoke on-line monitoring system.CEMS systems include gaseous contaminant monitoring subsystem,
Grain thing monitoring subsystem, Gas Parameters monitoring subsystem and data acquisition process and communication subsystem.Gaseous contaminant monitoring
System is mainly used in concentration and the total emission volumn for monitoring nitrogen oxides etc. in gaseous contaminant.Particle monitoring subsystem is mainly used
To monitor the concentration and total emission volumn of flue dust.Gas Parameters monitoring subsystem is mainly used to measure flue gas flow rate, flue-gas temperature, cigarette
Atmospheric pressure, flue gas oxygen content, smoke moisture etc., for the conversion of the integrating and related concentrations of total emission volumn.Data acquisition process
It is made up of data acquisition unit and computer system with communication subsystem, Real-time Collection parameters, generates each concentration value corresponding
Butt, wet basis and conversion concentration, generate day, the moon, the accumulation discharge capacity in year, complete to lose the compensation of data and will obtain form.
Device for monitoring and analyzing 4 is connected with sampling pipe 5, and sampling pipe 5 is provided with four sampling pipe branch roads 6, takes per bar
Sample pipeline branch road 6 is provided with four samplers 2, and sampler 2 is located in denitration flue 1, and above-mentioned 16 samplers 2 are in
Matrix form is uniformly distributed, and spacing of the sampler 2 on sampling pipe branch road 6 is 1200 ㎜.Sampler 2 is both secured to flue
On 1 support, defecator 3 on sampler 2, is equipped with, bulky grain filtrating smoke dust is fallen by defecator 3 so that gas sampled contains
Dust quantity is reduced, and reduce further the blocking to sampling line and the damage to device for monitoring and analyzing 4.The square of sampler 2
Configuration multiple spot is arranged, compared to existing technology in spot measurement, multiple sample points can more react each position nitrogen oxidation in flue 1
The distribution situation of thing etc., reduces the deviation of measurement data, improves the stability of measurement data.The system is additionally provided with purging dress
8 are put, 8 exit of blow device is communicated with laterally purging pipeline 9 and longitudinal direction purging pipeline 10, and laterally purging pipeline 9 and longitudinal direction are blown
Sweep, purge 11 orthogonal thereto distribution of branch road, improve in flue 1 flue gas circulation and
Flue gas mixability, realizes online ash removal purging, it is ensured that sampling line it is unimpeded, greatly reduce in flue gas dust to sampling
The blocking and abrasion of device 2, reduces purging number of times.2 exit of sampler is equipped with electromagnetic valve 7, for controlling sampling dress
Put the opening and closing of 2 place sampling pipe branch roads 6.Laterally electricity also is provided with purging pipeline 9, longitudinal direction purging pipeline 10 and purging branch road 11
Magnet valve 7, for controlling the opening and closing of purging pipeline, after choosing test sample point, blow device 8 is horizontal, longitudinal direction purges, but do not blow
The row and column at sample point place is swept, the degree of accuracy of sample point is improved.Electromagnetic valve 7 is electrically connected with control system.Control system is used
In the open and-shut mode for controlling each sampling line solenoid 7, so as to specified sampler 2 and device for monitoring and analyzing 4 are connected
It is logical.Control system is additionally operable to the open and-shut mode for controlling each purging pipeline solenoid 7, so as to by specified blow device 8 with
Purging pipeline communication.Before this kind of nitrogen oxides on-line measurement system is arranged at smoke inlet spray ammonia lattice coral or at exhaust pass.When
When unit load changes or flow field changes, this measuring system can be used for ammonia-spraying grid adjustment on-line testing data, so as to
Improve work efficiency and denitrating system modulability and denitration performance.
Embodiment 2：As shown in figure 1, this kind of SCR denitration technique flue total cross-section nitrogen oxides on-line measurement system includes
Nine samplers 2, device for monitoring and analyzing 4 and sampling pipes 5.Sampler 2 is transported to monitoring analysis dress for gathering flue gas
4 are put, device for monitoring and analyzing 4 adopts CEMS systems, i.e. smoke on-line monitoring system.CEMS systems include gaseous contaminant monitoring
System, particle monitoring subsystem, Gas Parameters monitoring subsystem and data acquisition process and communication subsystem.Gaseous contaminant
Monitoring subsystem is mainly used in concentration and the total emission volumn for monitoring nitrogen oxides etc. in gaseous contaminant.Particle monitoring subsystem
It is mainly used to monitor the concentration and total emission volumn of flue dust.Gas Parameters monitoring subsystem is mainly used to measure flue gas flow rate, flue gas
Temperature, flue gas pressures, flue gas oxygen content, smoke moisture etc., for the conversion of the integrating and related concentrations of total emission volumn.Data are adopted
Collection is processed and is made up of data acquisition unit and computer system with communication subsystem, Real-time Collection parameters, generates each concentration value
Corresponding butt, wet basis and conversion concentration, generate day, the moon, the accumulation discharge capacity in year, complete to lose the compensation of data and will obtain
Form.Device for monitoring and analyzing 4 is connected with sampling pipe 5, and sampling pipe 5 is provided with three sampling pipe branch roads 6, every probe tube
Road branch road 6 is provided with three samplers 2, and sampler 2 is located in denitration flue 1, and nine samplers 2 are uniform in matrix form
Distribution.The matrix form multiple spot of sampler 2 is arranged, compared to existing technology in spot measurement, multiple sample points can more react cigarette
In road 1, the distribution situation of each position nitrogen oxides etc., reduces the deviation of measurement data, improves stablizing for measurement data
Property.The system is additionally provided with blow device 8, and 8 exit of blow device is communicated with laterally purging pipeline 9 and longitudinal direction purging pipeline 10,
Laterally three purging branch roads 11 are equipped with purging pipeline 9 and longitudinal direction purging pipeline 10, purge 11 orthogonal thereto distribution of branch road, improve
Flue gas circulation and flue gas mixability in flue 1, realizes online ash removal purging, it is ensured that sampling line it is unimpeded, significantly
Blocking and abrasion of the dust to sampler 2 in flue gas is reduced, purging number of times is reduced.
Embodiment 3:As shown in figure 1, prison of this kind of SCR denitration technique with flue total cross-section nitrogen oxides on-line measurement system
Survey method, comprises the following steps：
S001, chooses before smoke inlet spray ammonia lattice coral or arbitrarily sample point, combination in any on the section of exhaust pass and takes
Sampling point is monitored, or gross sample point is supervised successively according to control system and 4 default order of device for monitoring and analyzing
Survey；
S002, while sample point is chosen, blow device 8 is horizontal, longitudinal direction purges, but does not purge sample point place
Row and column；
The sample got is transported to probe tube by sampling pipe branch road 6 by S003, the sampler 2 at selected sample point
Road 5, is transported to device for monitoring and analyzing 4 after collecting；
S004, device for monitoring and analyzing 4 pairs convey the flue gas for coming and are analyzed to form more fully test data.
Claims (7)
1. a kind of SCR denitration technique flue total cross-section nitrogen oxides on-line measurement system, it is characterised in that the system includes
Several samplers (2), device for monitoring and analyzing (4) and sampling pipe (5)；The device for monitoring and analyzing (4) is connected with sampling
Pipeline (5), the sampling pipe (5) are provided with some sampling pipe branch roads (6), and every sampling pipe branch road (6) is provided with
At least two samplers (2), in denitration flue (1), several samplers (2) are in the sampler (2)
Matrix form is distributed；
The system is additionally provided with blow device (8), and blow device (8) exit is communicated with laterally purging pipeline (9) and longitudinal direction
Purging pipeline (10), is equipped with some purging branch roads (11) on horizontal purging pipeline (9) and longitudinal direction purging pipeline (10),
It is described to purge the orthogonal thereto distribution of branch road (11).
2. SCR denitration technique according to claim 1 flue total cross-section nitrogen oxides on-line measurement system, its feature exist
In the sampler (2) is both secured on flue (1) support, is equipped with defecator (3) on the sampler (2).
3. SCR denitration technique according to claim 2 flue total cross-section nitrogen oxides on-line measurement system, its feature exist
In sampler (2) exit is equipped with electromagnetic valve (7).
4. SCR denitration technique according to claim 3 flue total cross-section nitrogen oxides on-line measurement system, its feature exist
In horizontal purging pipeline (9), longitudinal direction to purge and also be provided with electromagnetic valve (7) on pipeline (10) and purging branch road (11).
5. SCR denitration technique according to claim 4 flue total cross-section nitrogen oxides on-line measurement system, its feature exist
In spacing of the sampler (2) on the sampling pipe branch road (6) is 1050-1400 ㎜.
6. SCR denitration technique according to claim 5 flue total cross-section nitrogen oxides on-line measurement system, its feature exist
In the electromagnetic valve (7) is electrically connected with control system.
7. SCR denitration technique according to claim 6 flue total cross-section nitrogen oxides on-line measurement system, its feature exist
In before the system is arranged at smoke inlet spray ammonia lattice coral or at exhaust pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154953.4U CN206132125U (en) | 2016-10-31 | 2016-10-31 | Flue total cross -section nitrogen oxide on line measurement system for SCR denitrification process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154953.4U CN206132125U (en) | 2016-10-31 | 2016-10-31 | Flue total cross -section nitrogen oxide on line measurement system for SCR denitrification process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206132125U true CN206132125U (en) | 2017-04-26 |
Family
ID=58576525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621154953.4U Active CN206132125U (en) | 2016-10-31 | 2016-10-31 | Flue total cross -section nitrogen oxide on line measurement system for SCR denitrification process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206132125U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224854A (en) * | 2018-11-09 | 2019-01-18 | 上海明华电力技术工程有限公司 | Denitrating flue gas gridding method rotation samples ammonia and nitrogen oxides monitoring device combining |
| CN109991048A (en) * | 2019-04-30 | 2019-07-09 | 国电科学技术研究院有限公司 | Flue gas automatic monitoring system and its sampling device, denitration system |
| CN110967452A (en) * | 2019-12-23 | 2020-04-07 | 北京国电龙源环保工程有限公司 | Layout method of gas measurement system |
| CN111610291A (en) * | 2020-04-24 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | A measurement system for NOx concentration field of SCR inlet and outlet sections of utility boilers |
| CN114199311A (en) * | 2021-12-15 | 2022-03-18 | 昆岳互联环境技术(江苏)有限公司 | Intelligent measurement system and method for dust accumulation of sintering flue gas SCR denitration system |
-
2016
- 2016-10-31 CN CN201621154953.4U patent/CN206132125U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224854A (en) * | 2018-11-09 | 2019-01-18 | 上海明华电力技术工程有限公司 | Denitrating flue gas gridding method rotation samples ammonia and nitrogen oxides monitoring device combining |
| CN109991048A (en) * | 2019-04-30 | 2019-07-09 | 国电科学技术研究院有限公司 | Flue gas automatic monitoring system and its sampling device, denitration system |
| CN110967452A (en) * | 2019-12-23 | 2020-04-07 | 北京国电龙源环保工程有限公司 | Layout method of gas measurement system |
| CN111610291A (en) * | 2020-04-24 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | A measurement system for NOx concentration field of SCR inlet and outlet sections of utility boilers |
| CN114199311A (en) * | 2021-12-15 | 2022-03-18 | 昆岳互联环境技术(江苏)有限公司 | Intelligent measurement system and method for dust accumulation of sintering flue gas SCR denitration system |
| CN114199311B (en) * | 2021-12-15 | 2023-11-14 | 江苏昆仑互联科技有限公司 | Intelligent dust accumulation measurement system and method for sintering flue gas SCR denitration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206132125U (en) | Flue total cross -section nitrogen oxide on line measurement system for SCR denitrification process | |
| CN104407161B (en) | Smoke on-line monitoring system and monitoring method | |
| CN205861653U (en) | A kind of distributed tour gauging system of SCR exit NOx concentration | |
| CN206531693U (en) | A kind of matrix form flue gas sampling device | |
| CN208902486U (en) | A kind of gas sampling device | |
| CN204479546U (en) | Based on grid arrange method without sampling pump flue gas concentration measuring system | |
| CN109107387A (en) | A kind of denitrating system sprays ammonia control method and control system automatically | |
| CN108398301A (en) | A kind of method and device of quick detection nitrogen oxides in effluent concentration and its spatial distribution | |
| CN207570855U (en) | CEMS flue gas sampling probes | |
| CN111610069A (en) | Sample gas collection system and method for coal-fired unit denitration CEMS | |
| CN209727552U (en) | A kind of anti-blocking flue gas sampling device of multiple spot matrix form | |
| CN211122442U (en) | Matrix type multi-point automatic inspection gaseous pollutant testing device | |
| CN111397940A (en) | Test system and test method for simulating different smoke environments | |
| CN104226300B (en) | A kind of SCR catalyst and preparation method thereof | |
| CN205940635U (en) | Multipoint mode ammonia escape on -line monitoring system | |
| CN206818487U (en) | A multi-functional flue gas mercury automatic sampling system | |
| CN207036795U (en) | A kind of SCR flue gas denitration reactors section subregion flue gas sampler | |
| CN212340774U (en) | Sample gas collection system for denitration CEMS (continuous emission monitoring System) of coal-fired unit | |
| CN206804623U (en) | A kind of SCR flue gas denitration reactors tunneling boring flue gas flow field sampling and measuring device | |
| CN112191101B (en) | A leveling method of ammonia injection grid based on rapid measurement of NOx and ammonia slip concentration | |
| CN205643155U (en) | Detection apparatus for ammonia escape volume among out of stock exhaust pass | |
| CN211955407U (en) | System for accurately monitoring nitrogen oxide and ammonia concentration in coal-fired flue gas in subareas | |
| CN209519605U (en) | A kind of flue gas denitrification equipment | |
| CN107085079A (en) | An artificial olfactory device and organic pollutant control equipment | |
| CN203564964U (en) | On-line monitoring device on mixing uniformity behind SCR denitrification ammonia injection grid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |