CN109991047A - Have uniformly mixing and patrols the measuring system and detection method for surveying synchronized sampling with subregion - Google Patents
Have uniformly mixing and patrols the measuring system and detection method for surveying synchronized sampling with subregion Download PDFInfo
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- 238000005070 sampling Methods 0.000 title claims abstract description 301
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 171
- 238000004458 analytical method Methods 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 64
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 24
- 238000010926 purge Methods 0.000 claims description 22
- 229910021529 ammonia Inorganic materials 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000002912 waste gas Substances 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 239000003344 environmental pollutant Substances 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 12
- 231100000719 pollutant Toxicity 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 description 14
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/26—Devices for withdrawing samples in the gaseous state with provision for intake from several spaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0073—Control unit therefor
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses have uniformly to mix to patrol the measuring system and detection method of surveying synchronized sampling with subregion, including sampling probe, sample valve group, pretreatment unit, uniform mixing device, the uniform hybrid analysis device being used cooperatively with uniform mixing device, subregion, which patrols, measures sampling device, it patrols to measure the subregion that sampling device is used cooperatively and patrol with subregion and surveys analytical equipment and control centre, sampling valve group includes sampling valve, sampling T-way, sampling solenoid valve and the sampling line that sampling T-way and sampling solenoid valve link together, several sampling valve groups constitute multi-path sample gas transmission path；Sampling probe setting is exported in denitration flue, and sampling probe side is connected to by sampling line with sampling valve.Each subregion sample gas equivalent, same to timing, full and uniform mixing can be achieved.It is strong to measure timeliness.Two kinds of sampling mode synchro measures, are independent of each other.
Description
Technical field
The present invention relates to SCR denitrations precisely to spray ammonia field, and in particular to has uniformly mixing with subregion and patrols survey synchronized sampling
Measuring system and detection method.
Background technique
Currently, most of SCR denitration system all uses single-point sampling mode, the sampling mode the problem is that:
First, after minimum discharge transformation is implemented, with further increasing for denitration efficiency, boiler load changes, coal occurs
Under the operating conditions such as variation, burner adjustment, single-point sampling mode can not be drawn into representative sample gas；Second, it is unable to monitor dirt
Contaminate the non-uniform variation of concentration profile；Third, measurement data inaccuracy；4th, cause to spray excessive, air preheater blocking of ammonia etc. one
Series of events.At this stage, single-point sampling has been unable to satisfy flue gas measurement request.
Therefore, design is needed at present has measuring system and detection method that survey synchronized sampling is patrolled in uniformly mixing with subregion, it can
It is drawn into sample gas representative after evenly mixing in real time, carries out spray ammonia overall control, and can synchronize to patrol and measure each subregion of sample
Sample gas, in time grasp SCR denitration export concentration distribution of pollutants feature, in conjunction with big data artificial intelligent control system realize spray
Ammonia amount changes quickly adjustment, accurate response with operating condition, carries out subregion and precisely sprays ammonia, caused by solving SCR denitration system spray ammonia
The problems such as CEMS data fluctuation such as NOX, NH, tail portion air preheater, deduster blocking.
Summary of the invention
The object of the present invention is to provide have uniformly mixing with subregion patrol survey synchronized sampling measuring system and detection method,
Solve current gas sampling measurement data inaccuracy, single-point sampling technique it is representative it is poor, spray ammonia is excessive, air preheater blocks, nothing
Method monitors the non-uniform situation of concentration distribution of pollutants, testing result in time and operating condition response speed is slow, subregion accurately sprays ammonia
The technical problems such as realization difficulty is big.
To achieve the above object, the present invention adopts the following technical scheme:
One aspect of the present invention, which provides, has uniformly that the measuring system for surveying synchronized sampling is patrolled in mixing with subregion, including sampling probe, takes
Sample valve group, pretreatment unit, uniform mixing device, uniform hybrid analysis device, the subregion being used cooperatively with uniform mixing device
It patrols and measures sampling device, patrol to measure the subregion that sampling device is used cooperatively and patrol with subregion and survey analytical equipment and control centre,
The sampling valve group includes sampling valve, sampling T-way, sampling solenoid valve and connect sampling T-way with sampling solenoid valve
Sampling line together, several sampling valve groups constitute multi-path sample gas transmission path；The sampling probe is arranged in denitration cigarette
Road outlet, sampling probe side are connected to by sampling line with sampling valve；
The pretreatment unit includes condensing unit, fine filter, areal sampling pump, sampling T-way, stream by sampling flue gas flow direction
Amount manual modulation valve and suspended body flowmeter, pretreated every road input port connect corresponding sample electromagnetic valve outlet；
The uniform mixing device includes mixing chamber and waste gas collection device by sampling flue gas flow direction, the pretreatment unit it is defeated
Outlet is connected to by pipeline with the input port of mixing chamber, and the delivery outlet of mixing chamber is connected by pipeline and uniform hybrid analysis device
Logical, the sewage draining exit of mixing chamber lower part is connected to by pipeline with waste gas collection device；
It includes that subregion patrols and measures sample three-way magnetic valve, sampling T-way and useless that the subregion, which patrols and measures sampling device by sampling flue gas flow direction,
Gas collection device, and multi-path sample pneumatic transmission is entered into subregion and patrols survey analytical equipment.
Further, the sampling probe is multi beam probe rod type sampling probe.
Further, the sample gas outlet temperature of pretreatment unit is lower than 5 DEG C.
Further, uniform hybrid analysis device includes total sampling pump, suspended body flowmeter and uniformly mixed by sampling flue gas flow direction
Close analyzer；The input port of total sampling pump is connected to by pipeline with the delivery outlet of mixing chamber.
Further, subregion patrol survey analytical equipment by sampling flue gas flow direction include subregion patrol survey sampling pump, suspended body flowmeter and
Subregion patrols survey analyzer.
Further, sampling line includes heating sampling line and without heating sampling line, forming sample by the control of sample temperature degree
The transmission path of gas.
Further, it is formed in the sampling line of sample gas transmission path, the connecting pipeline between sampling probe and sampling solenoid valve is adopted
Sampling line is heated with double-core type, 200 DEG C of heating temperature, sampling line is used without heating sampling line, institute after sampling solenoid valve
Having pipeline material is PTFE, pipeline outer diameter Φ 8mm.
Further, configuration pretreatment tricks is consistent with flue number of partitions inside pretreatment unit；Flue number of partitions with
Sampling probe quantity is consistent.
Further, the quantity of sampling probe is equal with sampling valve quantity.
Another aspect of the present invention provides the above-mentioned measuring system and detection for having uniformly mixing and patrolling survey synchronized sampling with subregion
The detection method of method, the specific steps are as follows:
Step 1 lays measuring system；
S1 lays sampling probe；Sampling probe according to denitration entrance ammonia nozzle configuration feature, in conjunction with the practical ruler of denitration exhaust pass
Very little and denitration exhaust pass subregion arranges corresponding number sampling probe, forms matrix form sampling；
S2 lays sampling valve group；It is equal with sampling probe quantity to sample valve group；By sampling line by sampling probe, sampling three
Logical and sampling solenoid valve connection, forms multi-path sample gas transmission path；When blowback probe tube, sampling solenoid valve is closed, is opened anti-
Purge solenoid valve；
S3 lays sample gas pretreatment unit, uniform mixing device and uniform hybrid analysis device；
S4, lays subregion and patrols and measure sampling device and subregion patrols survey analytical equipment；
S5, installs control centre, and acceptance test measuring system comes into operation after qualified；
Step 2 starts uniform mixed mode in control centre；
S1, opens sampling valve group, and sample gas enters pretreatment by heating sampling line connection multi beam probe rod type sampling probe, sampling valve
Device；
S2 is coagulated sample air cooling to 5 DEG C hereinafter, removing contained superfine in the moisture content and separation sample gas in sample gas by pretreatment unit
Solid particle, complete sample gas pretreatment；
S3, sample gas pretreatment after enter uniform mixing device, by total sampling pump extract to uniform hybrid analysis instrument completion represent it is whole
The pollutant concentration of uniform aggregate sample gas analyzes measurement in a flue；
Step 3 patrols survey mode in control centre's boot partition；Successively subregion is patrolled by subregion serial number and measures sample three-way magnetic valve
Subregion is shifted to from gas sampling lateral incision patrolling and measure sample side, flue gas is connected by sampling line, from corresponding subregion pretreatment unit
Patrol survey sampling T-way by subregion patrol measure sample three-way magnetic valve, patrolled by subregion measure sample pumping take to subregion patrol survey analyzer it is complete
Measurement is analyzed at the pollutant concentration of each subregion sample gas；
Step 4 patrols in mixing chamber exhaust outlet open in usual to waste gas collection device, each subregion and measures sample three-way magnetic valve to exhaust gas
Comparability test test interface is reserved on collection device pipeline, facilitates process debugging and third party's comparing.
Further, in step 2, the working procedure of uniform mixed mode, the specific steps are as follows:
The first, program starts, and is directly entered uniform mixed mode, and uniform mixed mode working condition label K sets 1, and blowback is swept secondary
Number M=0；
The second, start uniform hybrid analysis instrument；
Third closes all sampling solenoid valves；
4th, all anti-purge solenoid valves, M=M+1 are opened；
5th, delay waits the T1 time, and the T1 time arrives, and executes the 6th；
6th, all anti-purge solenoid valves are closed；
7th, judge to purge whether number M is greater than 3, then program skips to the 4th to "No", and then program executes the 8th to "Yes"；
8th, all areal sampling solenoid valves are opened, number M=0 is purged；
9th, start all areal sampling pumps；
Tenth, start total sampling pump；
11st, delay waits the T2 time, and the T2 time arrives, and skips to third；
Hand push button is arranged to instruct and the uniform mixed mode recipe command of remote control center stopping；
Halt instruction triggering will stop uniform hybrid analysis instrument, and stop all areal sampling pumps, stops total sampling pump, close and own
It sampling solenoid valve, closes all anti-purge solenoid valves, purging number M is set 0 by resetting time parameter T1, resetting time parameter T2,
Uniform mixed mode working condition label K is set 0 simultaneously.
Further, in step 3, subregion patrols survey mode, and specific step is as follows:
The first, hand push button or remote control center send starting " subregion patrols survey mode " instruction, and subregion is patrolled the work of survey mode
State tag Q sets 1, subregion serial number N=1；
The second, whether judgement " uniform mixed mode working condition label K=1 and number M=0 is swept in blowback " meets, and "No" then executes
Third, "Yes" then skip to the 5th；
Whether third, judgement " uniform mixed mode working condition label K=0 and number M=0 is swept in blowback " meet, and "No" then skips to
12nd, "Yes" then executes the 4th；
4th, the anti-purge solenoid valve of serial number subregion N is closed, serial number subregion N is opened and samples solenoid valve；
5th, it opens serial number subregion N to patrol and measures sample three-way magnetic valve, outlet, which by gas sampling lateral incision shifts to subregion, to be patrolled and measure sample
Side；
6th, survey sampling pump is patrolled in starting；
7th, delay waits the T3 time, and the T3 time arrives, and executes the 8th；
8th, stop to patrol survey sampling pump；
9th, it closes serial number N subregion to patrol and measures sample three-way magnetic valve, outlet is patrolled by subregion to be measured sample lateral incision and shift to gas sampling
Side；
Tenth, serial number subregion N=N+1；
11st, judge whether to meet serial number subregion N > maximum number of partitions, "Yes" then executes the 12nd, and "No" then skips to the tenth
Three；
12nd, N=1 skip to the 14th；
13rd, judge whether to stop patrolling survey, "Yes" then executes the 14th, and "No" then skips to second；
14th, subregion patrols survey EP (end of program)；
Setting hand push button instructs and remote control center stops subregion and patrols survey mode recipe command；Halt instruction triggering will
Survey sampling pump is patrolled in stopping, closing all subregions and patrols and measures sample three-way magnetic valve, resets T3 time parameter, subregion serial number N is set 1,
Subregion is patrolled into survey mode state label Q simultaneously and sets 0.
The beneficial effects of the present invention are embodied in:
1, the measuring system and detection method provided by the invention for having uniformly mixing and patrolling survey synchronized sampling with subregion, design is closed
Reason, sampling configuration are flexible: it can be configured according to denitration entrance ammonia nozzle, denitration exhaust pass actual size feature, it is flexible by subregion
It arranges corresponding number sampling probe, forms matrix form sampling；Function is swept in sampling probe setting two-stage dust removal and filtration and timing blowback,
The anti-blocking property of system is strong；The multi beam feeler lever of sampling probe is independent, active joint, convenient to overhaul.
2, the measuring system and detection method provided by the invention for having uniformly mixing and patrolling survey synchronized sampling with subregion, "
Even mixed sampling " mode is, it can be achieved that each subregion sample gas equivalent, same to timing, full and uniform mixing.
3, the measuring system and detection method provided by the invention for having uniformly mixing and patrolling survey synchronized sampling with subregion, " point
Area, which patrols, measures sample " mode, measurement timeliness is strong, and can be according to survey demand is patrolled, and each subregion of on-line tuning, which patrols, surveys time, shortest time
It patrols and surveys the time less than min." uniform mixed sampling " can be synchronous with " subregion, which patrols, measures sample " both of which, does not interfere with each other measurement, protects
It is truer to demonstrate,prove the outlet SCR NOx nonuniformity coefficient calculating；It only needs once to adjust areal sampling in pretreatment unit to pump,
Mixing chamber exhaust outlet open in usual in even mixing arrangement, total sampling pump and subregion are patrolled and are surveyed in analytical equipment in uniform hybrid analysis device
Subregion patrols the sample air-flow magnitude relation for surveying four devices of sampling pump, and " uniform mixed sampling " and " subregion, which patrols, measures sample " two can be realized
Kind sampling mode synchro measure, is independent of each other.
4, the oxygen content of each subregion sample gas of system Simultaneous Monitoring, data validity accuracy of judgement, comprehensively；
5, system is reserved to compare Comparability test test interface, facilitates process debugging and third party's comparing.
6, detection system provided by the invention can be drawn into sample gas representative after evenly mixing, in conjunction with big data
Artificial intelligent control system realizes that real-time perfoming sprays ammonia overall control, and can synchronize the sample gas for patrolling and measuring each subregion of sample, slaps in time
SCR denitration outlet concentration distribution of pollutants feature is held, it is accurate to respond, it carries out subregion and precisely sprays ammonia, denitration is greatly improved and precisely sprays
The accuracy of ammonia solves NO caused by SCR denitration system spray ammoniaX、NH3Equal CEMS data fluctuation, tail portion air preheater, dedusting
The problems such as device blocks.
Other features and advantages of the present invention will be illustrated in the following description, and partly becomes from specification
It is clear that understand through the implementation of the invention.The main object of the present invention and further advantage can be by the description
Specifically noted scheme is achieved and obtained.
Detailed description of the invention
The present invention will be further described in detail with reference to the accompanying drawing.
Fig. 1 is that uniformly mixing and subregion of the invention patrol survey synchronized sampling measuring system system diagram.
Fig. 2 is the enlarged top view of Fig. 1.
Fig. 3 is the middle part enlarged drawing of Fig. 1.
Fig. 4 is the lower part enlarged drawing of Fig. 1.
Fig. 5 is uniform mixed sampling mode working procedure flow chart.
Fig. 6 is that subregion patrols survey sampling mode working procedure flow chart.
Attached appended drawing reference: 1- sampling probe, 21- sampling T-way, the anti-purge solenoid valve of 22-, 23- sampling solenoid valve, 31- are cold
Solidifying device, 32- fine filter, 33- areal sampling pump, 35- flow manual modulation valve, 36- suspended body flowmeter,
41- mixing chamber, 42- waste gas collection device,
The uniform hybrid analysis instrument of the total sampling pump of 51-, 53-,
61- subregion patrols and measures sample three-way magnetic valve, 71- subregion patrols survey sampling pump, 73- subregion patrols and surveys analyzer, 81- heating sampling
Pipeline, 82- are without heating sampling line.
Specific embodiment
Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is only exemplary,
It is only capable of for explanation and illustration technical solution of the present invention, and the limitation to technical solution of the present invention cannot be construed to.
One aspect of the present invention, which provides, has measuring system and detection method that survey synchronized sampling is patrolled in uniformly mixing with subregion, packet
Multi beam probe rod type sampling probe can be used by including sampling probe 1(), sampling valve group, pretreatment unit, uniform mixing device, with
Uniform hybrid analysis device, the subregion that even mixing arrangement is used cooperatively patrol measure sampling device, with subregion patrol measure sampling device cooperation
The subregion used, which patrols, surveys analytical equipment and control centre.
As shown in Fig. 1,2,3 and 4, the sampling valve group includes sampling valve, sampling T-way 21, sampling solenoid valve 23 and incites somebody to action
The sampling line that sampling T-way 21 and sampling solenoid valve 23 link together, several sampling valve groups constitute multi-path sample gas and transmit road
Diameter；The setting of sampling probe 1 is exported in denitration flue, and 1 side of sampling probe is connected to by sampling line with sampling valve；Its
In, sampling line includes heating sampling line 81 and without heating sampling line 82, forming the transmission of sample gas by the control of sample temperature degree
Path.It is formed in the sampling line of sample gas transmission path, the connecting pipeline between sampling probe 1 and sampling solenoid valve 23 is using double
Core type heats sampling line 81, and 200 DEG C of heating temperature, sampling line is used without heating sampling line 82 after sampling solenoid valve 23,
All pipeline materials are PTFE, pipeline outer diameter Φ 8mm.
The pretreatment unit by sampling flue gas flow direction include condensing unit 31, fine filter 32, areal sampling pump 33, take
Sample threeway 21 patrols and surveys sample tap, flow manual modulation valve 35 and suspended body flowmeter 36, and pretreated every road input port connects correspondence and takes
Sample solenoid valve 23 exports.The sample gas outlet temperature of pretreatment unit is lower than 5 DEG C.Wherein, the pre- place of configuration inside pretreatment unit
It is consistent with flue number of partitions to manage tricks；Flue number of partitions is consistent with 1 quantity of sampling probe.The quantity of sampling probe 1 with take
Sample valve quantity is equal.
The uniform mixing device includes mixing chamber 41 and waste gas collection device 42, the pretreatment by sampling flue gas flow direction
The delivery outlet of device is connected to by pipeline with the input port of mixing chamber 41, the delivery outlet of mixing chamber 41 pass through pipeline with uniformly mix
Analytical equipment connection, the sewage draining exit of 41 lower part of mixing chamber are connected to by pipeline with waste gas collection device 42, by extra sample gas with
Residual liquor discharge.Wherein, uniform hybrid analysis device by sampling flue gas flow direction include total sampling pump 51, suspended body flowmeter 36 and uniformly
Hybrid analysis instrument 53；The input port of total sampling pump 51 is connected to by pipeline with the delivery outlet of mixing chamber 41.
The subregion patrol measure sampling device by sampling flue gas flow direction include subregion patrol measure sample three-way magnetic valve 61, sampling three
Lead to 21 and waste gas collection device 42, and multi-path sample pneumatic transmission is entered into subregion and patrols survey analytical equipment.Specifically, subregion patrols survey analytical equipment
By sampling flue gas flow direction include subregion patrol survey sampling pump 71, suspended body flowmeter 36 and subregion patrol and survey analyzer 73.
Above-mentioned sampling solenoid valve 23, blowback solenoid valve, areal sampling pump 33, total sampling pump 51, inspection sampling pump, subregion patrol
Survey three-way magnetic valve, uniform hybrid analysis instrument 53, subregion patrol survey analyzer 73 and are included in the control of remote control center system.
The above-mentioned detection method for having uniformly mixing and patrolling the measuring system and detection method of survey synchronized sampling with subregion, specifically
Steps are as follows:
Step 1 lays measuring system；
S1 lays sampling probe 1；Multi beam probe rod type sampling probe 1 goes out according to denitration entrance ammonia nozzle configuration feature, in conjunction with denitration
Mouth flue actual size and denitration exhaust pass subregion arrange corresponding number sampling probe 1, form matrix form sampling；
S2 lays sampling valve group；It is equal with 1 quantity of sampling probe to sample valve group；By sampling line by sampling probe 1, sampling
Threeway 21 and sampling 23 connection of solenoid valve, form multi-path sample gas transmission path；When blowback probe tube, sampling solenoid valve is closed
23, open anti-purge solenoid valve 22；
S3 lays sample gas pretreatment unit, uniform mixing device and uniform hybrid analysis device；
Wherein, pretreatment unit includes condensing unit 31, fine filter 32, areal sampling pump 33, sampling by sampling flue gas flow direction
Threeway 21, flow manual modulation valve 35 and suspended body flowmeter 36 are coagulated sample air cooling to 5 DEG C or less by the device；Uniformly mixing
Device includes mixing chamber 41 and gas sampling by sampling flue gas flow direction, and multi-path sample gas is uniformly mixed；Uniform hybrid analysis
Device includes total sampling pump 51, suspended body flowmeter 36 and uniform hybrid analysis instrument 53 by sampling flue gas flow direction, completes uniformly mixing
The pollutant concentration of sample gas analyzes measurement afterwards；
S4, lays subregion and patrols and measure sampling device and subregion patrols survey analytical equipment；
Wherein, it includes that subregion patrols and measures sample three-way magnetic valve 61, sampling T-way that subregion, which patrols and measures sampling device by sampling flue gas flow direction,
21 and waste gas collection device 42, it realizes that pretreated sample gas is passed through in areal sampling by the device, realizes that subregion patrols brake；
Subregion patrol survey analytical equipment by sampling flue gas flow direction include subregion patrol survey sampling pump 71, suspended body flowmeter 36 and subregion patrol survey analysis
Instrument 73, the pollutant concentration for completing subregion sample gas analyze measurement；
S5, installs control centre, and acceptance test measuring system comes into operation after qualified；
Step 2 starts uniform mixed mode in control centre；
S1 opens sampling valve group, and sample gas connects multi beam probe rod type sampling probe 1 by heating sampling line 81, sampling valve enters in advance
Processing unit；
S2 is coagulated sample air cooling to 5 DEG C hereinafter, removing contained superfine in the moisture content and separation sample gas in sample gas by pretreatment unit
Solid particle, complete sample gas pretreatment；
S3 enters uniform mixing device after the pretreatment of sample gas, is extracted by total sampling pump 51 to uniform hybrid analysis instrument 53 and complete generation
The pollutant concentration of uniform aggregate sample gas analyzes measurement in the entire flue of table；
Step 3 patrols survey mode in control centre's boot partition；Successively subregion is patrolled by subregion serial number and measures sample three-way magnetic valve
61, which from gas sampling lateral incision shift to subregion, patrols and measures sample side, and flue gas is connected by sampling line, from corresponding subregion pretreatment unit
Patrol to survey sampling T-way 21 and patrol by subregion and measure sample three-way magnetic valve 61, patrolled to survey sampling pump 71 and extract to subregion by subregion and patrol survey
Analyzer 73 completes the pollutant concentration analysis measurement of each subregion sample gas.
Step 4 patrols in the exhaust outlet open in usual of mixing chamber 41 to waste gas collection device 42, each subregion and surveys sampling T-way electromagnetism
Comparability test test interface is reserved on valve 61 to 42 pipeline of waste gas collection device, facilitates process debugging and third party's comparing.
As shown in figure 5, in step 2, the working procedure of uniform mixed mode, the specific steps are as follows:
The first, program starts, and is directly entered uniform mixed mode, and uniform mixed mode working condition label K sets 1, and blowback is swept secondary
Number M=0；
The second, start uniform hybrid analysis instrument 53；
Third closes all sampling solenoid valves 23；
4th, all anti-purge solenoid valves 22, M=M+1 are opened；
5th, delay waits the T1 time, and the T1 time arrives, and executes the 6th；
6th, all anti-purge solenoid valves 22 are closed；
7th, judge to purge whether number M is greater than 3, then program skips to the 4th to "No", and then program executes the 8th to "Yes"；
8th, all areal sampling solenoid valves 23 are opened, number M=0 is purged；
9th, start all areal sampling pumps 33；
Tenth, start total sampling pump 51；
11st, delay waits the T2 time, and the T2 time arrives, and skips to third；
Hand push button is arranged to instruct and the uniform mixed mode recipe command of remote control center stopping；
Halt instruction triggering will stop uniform hybrid analysis instrument 53, and stop all areal sampling pumps 33, stop total sampling pump 51, close
It closes all sampling solenoid valves 23, close all anti-purge solenoid valves 22, resetting time parameter T1, resetting time parameter T2 will be blown
It sweeps number M and sets 0, while uniform mixed mode working condition label K is set 0.
As shown in fig. 6, subregion patrols survey mode, and specific step is as follows in step 3:
The first, hand push button or remote control center send starting " subregion patrols survey mode " instruction, and subregion is patrolled the work of survey mode
State tag Q sets 1, subregion serial number N=1；
The second, whether judgement " uniform mixed mode working condition label K=1 and number M=0 is swept in blowback " meets, and "No" then executes
Third, "Yes" then skip to the 5th；
Whether third, judgement " uniform mixed mode working condition label K=0 and number M=0 is swept in blowback " meet, and "No" then skips to
12nd, "Yes" then executes the 4th；
4th, the anti-purge solenoid valve 22 of serial number subregion N is closed, serial number subregion N is opened and samples solenoid valve 23；
5th, it opens serial number subregion N and patrols and survey 21 solenoid valve of sampling T-way, outlet, which by gas sampling lateral incision shifts to subregion, to be patrolled and measure sample
Side；
6th, survey sampling pump is patrolled in starting；
7th, delay waits the T3 time, and the T3 time arrives, and executes the 8th；
8th, stop to patrol survey sampling pump；
9th, it closes serial number N subregion to patrol and measures sample three-way magnetic valve 61, outlet is patrolled by subregion to be measured sample lateral incision and shift to gas sampling
Side；
Tenth, serial number subregion N=N+1；
11st, judge whether to meet serial number subregion N > maximum number of partitions, "Yes" then executes the 12nd, and "No" then skips to the tenth
Three；
12nd, N=1 skip to the 14th；
13rd, judge whether to stop patrolling survey, "Yes" then executes the 14th, and "No" then skips to second；
14th, subregion patrols survey EP (end of program)；
Setting hand push button instructs and remote control center stops subregion and patrols survey mode recipe command；Halt instruction triggering will
Survey sampling pump is patrolled in stopping, closing all subregions and patrols and measures sample three-way magnetic valve 61, resets T3 time parameter, subregion serial number N is set
1, while subregion is patrolled into survey mode state label Q and sets 0.
It is normal that the present invention can pump mixing chamber 41 in 33, uniform mixing device by adjusting areal sampling in good pretreatment unit
Total sampling pump 51 and subregion patrol subregion in survey analytical equipment and patrol survey sampling pump 71 4 in open exhaust mouth, uniform hybrid analysis device
" uniform mixed sampling " and " subregion, which patrols, measures sample " two kinds of same pacings of sampling mode can be realized in the sample air-flow magnitude relation of a device
Amount, is independent of each other, can be drawn into sample gas representative after evenly mixing in real time, carries out spray ammonia overall control, and can be same
Step patrols the sample gas for measuring each subregion of sample, grasps SCR denitration in time and exports concentration distribution of pollutants feature, carries out subregion and precisely sprays
Ammonia.
The foregoing is merely the preferable specific embodiments of the present invention, but scope of protection of the present invention is not limited thereto,
The change or replacement that anyone skilled in the art is expected in the technical scope disclosed by the present invention should all be contained
Lid is within protection scope of the present invention.
Claims (10)
1. having uniformly mixing patrols the measuring system for surveying synchronized sampling with subregion, it is characterised in that: including sampling probe (1), take
Sample valve group, pretreatment unit, uniform mixing device, uniform hybrid analysis device, the subregion being used cooperatively with uniform mixing device
It patrols and measures sampling device, patrol to measure the subregion that sampling device is used cooperatively and patrol with subregion and survey analytical equipment and control centre,
The sampling valve group includes sampling T-way (21), sampling solenoid valve (23), anti-purge solenoid valve (22) and will sample three
Logical (21) and the sampling line that solenoid valve (23) link together is sampled, several sampling solenoid valve (23) groups constitute multi-path sample gas
Transmission path；Sampling probe (1) setting is exported in denitration flue, and sampling probe (1) side passes through sampling line and sampling
Solenoid valve (23) connection；
The pretreatment unit by sampling flue gas flow direction include condensing unit (31), fine filter (32), areal sampling pump (33),
Sampling T-way (21), flow manual modulation valve (35) and suspended body flowmeter (36), pretreated every road input port connect corresponding sample
Solenoid valve (23) outlet；
The uniform mixing device includes mixing chamber (41) and waste gas collection device (42), the pretreatment by sampling flue gas flow direction
The delivery outlet of device is connected to by pipeline with the input port of mixing chamber (41), and the delivery outlet of mixing chamber (41) is by pipeline and uniformly
The sewage draining exit of the connection of hybrid analysis device, mixing chamber (41) lower part is connected to by pipeline with waste gas collection device (42)；
It includes that subregion patrols and measures sample three-way magnetic valve (61), sampling T-way that the subregion, which patrols and measures sampling device by sampling flue gas flow direction,
(21) and waste gas collection device (42), and multi-path sample pneumatic transmission is entered into subregion and patrols survey analytical equipment.
2. having uniformly mixing as described in claim 1 patrols the measuring system for surveying synchronized sampling with subregion, which is characterized in that institute
Stating sampling probe (1) is multi beam probe rod type sampling probe.
3. having uniformly mixing as described in claim 1 patrols the measuring system for surveying synchronized sampling with subregion, which is characterized in that pre-
The sample gas outlet temperature of processing unit is lower than 5 DEG C.
4. having uniformly mixing as described in claim 1 patrols the measuring system for surveying synchronized sampling with subregion, which is characterized in that
Even hybrid analysis device includes total sampling pump (51), suspended body flowmeter (36) and uniform hybrid analysis instrument by sampling flue gas flow direction
(53)；The input port of total sampling pump (51) is connected to by pipeline with the delivery outlet of mixing chamber (41).
5. having uniformly mixing as described in claim 1 patrols the measuring system for surveying synchronized sampling with subregion, which is characterized in that point
Area patrol survey analytical equipment by sampling flue gas flow direction include subregion patrol survey sampling pump (71), suspended body flowmeter (36) and subregion patrol survey and divide
Analyzer (73).
6. having uniformly mixing as described in claim 1 patrols the measuring system for surveying synchronized sampling with subregion, which is characterized in that take
Sample pipeline includes heating sampling line (81) and without heating sampling line (82) by the control of sample temperature degree.
7. having uniformly mixing as described in claim 1 patrols the measuring system for surveying synchronized sampling with subregion, which is characterized in that pre-
Configuration pretreatment tricks is consistent with flue number of partitions inside processing unit；Flue number of partitions and sampling probe (1) quantity one
It causes.
8. with the measuring system for having uniformly mixing and subregion and patrolling survey synchronized sampling as described in any one of claim 1-7
Detection method, which is characterized in that specific step is as follows:
Step 1 lays measuring system；
S1 is laid sampling probe (1)；Sampling probe (1) according to denitration entrance ammonia nozzle configuration feature, in conjunction with denitration exhaust pass
Actual size and denitration exhaust pass subregion are arranged corresponding number sampling probe (1), and matrix form sampling is formed；
S2 lays sampling valve group；It is equal with sampling probe (1) quantity to sample valve group；By sampling line by sampling probe (1),
Sampling T-way (21) and sampling solenoid valve (23) connection, form multi-path sample gas transmission path；When blowback probe tube, sampling is closed
Solenoid valve (23) opens anti-purge solenoid valve (22)；
S3 lays sample gas pretreatment unit, uniform mixing device and uniform hybrid analysis device；
S4, lays subregion and patrols and measure sampling device and subregion patrols survey analytical equipment；
S5, installs control centre, and acceptance test measuring system comes into operation after qualified；
Step 2 starts uniform mixed mode in control centre；
S1, open sampling valve group, sample gas by heating sampling line (81) connection multi beam probe rod type sampling probe (1), sampling valve into
Enter pretreatment unit；
S2 is coagulated sample air cooling to 5 DEG C hereinafter, removing contained superfine in the moisture content and separation sample gas in sample gas by pretreatment unit
Solid particle, complete sample gas pretreatment；
S3 enters uniform mixing device after the pretreatment of sample gas, is extracted by total sampling pump (51) complete to uniform hybrid analysis instrument (53)
Cheng represents the pollutant concentration analysis measurement of uniform aggregate sample gas in entire flue；
Step 3 patrols survey mode in control centre's boot partition；Successively subregion is patrolled by subregion serial number and measures sample three-way magnetic valve
(61) subregion is shifted to from gas sampling lateral incision patrolling and measure sample side, flue gas is connected by sampling line, from corresponding subregion pretreatment unit
In patrol survey sampling T-way (21) by subregion patrol measure sample three-way magnetic valve (61), by subregion patrol survey sampling pump (71) extract extremely
Subregion, which patrols, surveys the pollutant concentration analysis measurement that analyzer (73) complete each subregion sample gas；
Step 4 patrols in mixing chamber (41) exhaust outlet open in usual to waste gas collection device (42), each subregion and surveys sampling T-way electromagnetism
Comparability test test interface is reserved on valve (61) to waste gas collection device (42) pipeline, facilitates process debugging and third party's data ratio
It is right.
9. detection method as claimed in claim 8, which is characterized in that in step 2, the working procedure of uniform mixed mode, tool
Steps are as follows for body:
The first, program starts, and is directly entered uniform mixed mode, and uniform mixed mode working condition label K sets 1, and blowback is swept secondary
Number M=0；
The second, start uniform hybrid analysis instrument (53)；
Third closes all sampling solenoid valves (23)；
4th, all anti-purge solenoid valves (22), M=M+1 are opened；
5th, delay waits the T1 time, and the T1 time arrives, and executes the 6th；
6th, all anti-purge solenoid valves (22) are closed；
7th, judge to purge whether number M is greater than 3, then program skips to the 4th to "No", and then program executes the 8th to "Yes"；
8th, all areal sampling solenoid valves (23) are opened, number M=0 is purged；
9th, start all areal sampling pumps (33)；
Tenth, start total sampling pump (51)；
11st, delay waits the T2 time, and the T2 time arrives, and skips to third；
Hand push button is arranged to instruct and the uniform mixed mode recipe command of remote control center stopping；
Halt instruction triggering will stop uniform hybrid analysis instrument (53), and stop all areal sampling pumps (33), stop total sampling pump
(51), all sampling solenoid valves (23) are closed, close all anti-purge solenoid valves (22), resetting time parameter T1, resetting time
Purging number M is set 0, while uniform mixed mode working condition label K is set 0 by parameter T2.
10. detection method as claimed in claim 8, which is characterized in that in step 3, subregion patrols survey mode specific steps such as
Under:
The first, hand push button or remote control center send starting " subregion patrols survey mode " instruction, and subregion is patrolled the work of survey mode
State tag Q sets 1, subregion serial number N=1；
The second, whether judgement " uniform mixed mode working condition label K=1 and number M=0 is swept in blowback " meets, and "No" then executes
Third, "Yes" then skip to the 5th；
Whether third, judgement " uniform mixed mode working condition label K=0 and number M=0 is swept in blowback " meet, and "No" then skips to
12nd, "Yes" then executes the 4th；
4th, the anti-purge solenoid valve of serial number subregion N (22) are closed, opens serial number subregion N sampling solenoid valve (23)；
5th, it opens serial number subregion N and patrols and survey sampling T-way (21) solenoid valve, outlet, which by gas sampling lateral incision shifts to subregion, to be patrolled and measure
Sample side；
6th, survey sampling pump is patrolled in starting；
7th, delay waits the T3 time, and the T3 time arrives, and executes the 8th；
8th, stop to patrol survey sampling pump；
9th, it closes serial number N subregion to patrol and measures sample three-way magnetic valve (61), outlet is patrolled by subregion to be measured sample lateral incision and shift to exhaust gas receipts
Collect side；
Tenth, serial number subregion N=N+1；
11st, judge whether to meet serial number subregion N > maximum number of partitions, "Yes" then executes the 12nd, and "No" then skips to the tenth
Three；
12nd, N=1 skip to the 14th；
13rd, judge whether to stop patrolling survey, "Yes" then executes the 14th, and "No" then skips to second；
14th, subregion patrols survey EP (end of program)；
Setting hand push button instructs and remote control center stops subregion and patrols survey mode recipe command；Halt instruction triggering will
Survey sampling pump is patrolled in stopping, closing all subregions and patrols and measures sample three-way magnetic valve (61), T3 time parameter is resetted, by subregion serial number N
1 is set, while subregion is patrolled into survey mode state label Q and sets 0.
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