CN103344591B - Denitrating flue gas monitoring system and method - Google Patents
Denitrating flue gas monitoring system and method Download PDFInfo
- Publication number
- CN103344591B CN103344591B CN201310282754.6A CN201310282754A CN103344591B CN 103344591 B CN103344591 B CN 103344591B CN 201310282754 A CN201310282754 A CN 201310282754A CN 103344591 B CN103344591 B CN 103344591B
- Authority
- CN
- China
- Prior art keywords
- gas
- flue gas
- compartment
- channel
- monitoring system
- 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
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 239000003546 flue gas Substances 0.000 title claims abstract description 150
- 238000012544 monitoring process Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims description 32
- 239000007789 gas Substances 0.000 claims abstract description 152
- 238000001914 filtration Methods 0.000 claims abstract description 56
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000004458 analytical method Methods 0.000 claims abstract description 23
- 125000006850 spacer group Chemical group 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 8
- 238000010183 spectrum analysis Methods 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 32
- 239000000428 dust Substances 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 229910021529 ammonia Inorganic materials 0.000 description 16
- 239000000523 sample Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000002004 direct laser absorption spectroscopy Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a kind of denitrating flue gas monitoring system, comprise gas compartment, analysis meter; Comprise further: filtration unit, described filtration unit arranges the downstream of sampler, and filtering accuracy is 5-20 μm; Spacer assembly, described spacer assembly is used for providing gas, and this gas enters in described gas compartment from air intake opening, forms isolated area in the side of the contiguous flue gas of optics, after from exhausr port Exhaust Gas room; Sampler, described sampler for extracting the flue gas in test environment out, and makes flue gas flow exceed 10L/min in stream; Heating arrangement, described heating arrangement is for heating the pipeline of described filtration unit, gas compartment, connection filtration unit and gas compartment.The present invention has advantages such as detecting fast, precision is high, stream time is long.
Description
Technical field
The present invention relates to gas-monitoring, particularly denitrating flue gas monitoring system and method.
Background technology
In flue gas SCR (or SNCR) technique denitration technology, utilize ammonia and oxides of nitrogen to react, generate water and nitrogen, thus meet the requirement of environmental protection.In order to control the amount spraying into raw material ammonia, prevent too much ammonia and sample solid/liquid/gas reactions from generating solid matter and blocking air preheater or the optical window of rear end, need to monitor the escape ammonia in denitration outlet flue, form the ammonia spraying amount of closed-loop control denitrification apparatus.
In the monitoring of above-mentioned denitrating flue gas escape ammonia, operating mode is comparatively severe:
1, in flue gas, dust content is very large, reaches 30-50mg/m
3.In detection for sampling pretreatment mode, high dust is easy to blocking probe, goes back severe contamination analysis meter, measuring cell.
2, in flue gas, water cut is high, if detect ammonia by traditional analysis instrument, detection can be subject to the interference of water, and accuracy of detection is low.
3, in order to available protecting probe, need the low blowback probe in interval, therefore valve is set between probe and gas compartment, and blowback source of the gas is set between valve and probe.Because described valve must be operated in high temperature occasion (flue gas in pipeline needs companion's heat), therefore adopt high temp .-resistant valve.This kind of valve is expensive, and inner moving component also brings maintenance and life problems.
Based on above-mentioned bad working environments; someone proposes the precision of raising smoke filtration to reduce the dust content in flue gas; so effectively protect analysis meter, measuring cell; but substantially increase the maintenance that (extremely susceptible to plugging) filters probe; reduce the serviceable life of filtering probe; reduce the time of monitoring continuously simultaneously, have a strong impact on the closed-loop control of denitrating technique.Further, the ammonia level that analysis meter detects is compared with the content in environment, always on the low side, but can not find reason all the time.
For these reasons, prior art be cannot meet fast, the demand of flue gas under high precision, continuous print monitoring denitration environment, environment protection standard requirement cannot be reached.Therefore, to realize in denitration field continuously, high precision, fast monitored flue gas be a technical barrier in the urgent need to address.
Summary of the invention
In order to solve the deficiency in above-mentioned prior art, the invention provides a kind of denitrating flue gas monitoring system, solve in denitrating flue gas field high dust, high-moisture is difficult to the technical barrier that detects, thus to achieve in denitration field continuously, high precision, fast, monitor to low cost, low error the goal of the invention of composition in flue gas.
The object of the invention is to be achieved through the following technical solutions:
A kind of denitrating flue gas monitoring system, described denitrating flue gas monitoring system comprises gas compartment, analysis meter; Described denitrating flue gas monitoring system comprises further:
Filtration unit, described filtration unit arranges the downstream of sampler, and filtering accuracy is 5-20 μm;
Spacer assembly, described spacer assembly is used for providing gas, and this gas enters in described gas compartment from air intake opening, forms isolated area in the side of the contiguous flue gas of optics, after from exhausr port Exhaust Gas room;
Sampler, described sampler for extracting the flue gas in test environment out, and makes flue gas flow exceed 10L/min in stream;
Heating arrangement, described heating arrangement is for heating the pipeline of described filtration unit, gas compartment, connection filtration unit and gas compartment.
According to above-mentioned denitrating flue gas monitoring system, preferably, the both sides of described gas compartment arrange optical window, and at least 2 air intake openings are separately positioned on the side that described optical window closes on flue gas to be measured in gas compartment.
According to above-mentioned denitrating flue gas monitoring system, preferably, flue gas flows exceed 20L/min in stream.
According to above-mentioned denitrating flue gas monitoring system, preferably, described exhausr port is at least 2, is separately positioned between described air intake opening and gas approach.
According to above-mentioned denitrating flue gas monitoring system, preferably, the temperature of described filtration unit, pipeline and gas compartment is more than 200 DEG C.
According to above-mentioned denitrating flue gas monitoring system, preferably, described analysis meter is laser spectral analysis instrument.
According to above-mentioned denitrating flue gas monitoring system, alternatively, described denitrating flue gas monitoring system comprises further:
Cleaning plant, the third channel that described cleaning plant comprises body, is arranged on the first passage of the described filtration unit of the intrinsic connection be interconnected, is communicated with the second channel of described gas compartment and connection source of the gas, first passage arranges breathing space, angle between described first passage and second channel is obtuse angle or right angle, and the angle between described second channel and third channel is acute angle or right angle.
Present invention also offers a kind of denitrating flue gas monitoring method, solve in denitrating flue gas field high dust, high-moisture is difficult to the technical barrier that detects, thus to achieve in denitration field continuously, monitor to high precision, quick, low error the goal of the invention of composition in flue gas.This goal of the invention is achieved through the following technical solutions:
A kind of denitrating flue gas monitoring method, described denitrating flue gas monitoring method comprises the following steps:
(A1) flue gas in environment to be measured is transferred to gas compartment by pipeline after sampling, filtration, and flue gas flow is more than 10L/min, and filtering accuracy is 5-20 μm; In this sampling, filtration and transmitting procedure, flue gas is heated;
(A2) gas enters described gas compartment from air intake opening, forms isolated area, keep apart optics and flue gas, afterwards from exhausr port Exhaust Gas room in the side of the contiguous flue gas of optics; Analysis meter detects the content of flue gas in described gas compartment; Flue gas in gas compartment described in testing process is heated.
According to above-mentioned denitrating flue gas monitoring method, alternatively, described denitrating flue gas monitoring method comprises the steps: further
(B1) open source of the gas, close sampler, the gas that source of the gas provides enters into breathing space in first passage from third channel and expands, thus the flue gas of gas compartment is drawn into first passage by second channel, and combination gas enters and clears up described filtration unit
According to above-mentioned denitrating flue gas monitoring method, preferably, described flue gas is heated to more than 200 DEG C.
Compared with prior art, the beneficial effect that the present invention has is:
1, have selected suitable flue gas flow, make follow-up testing result and truth deviation very little, lower than 1%, greatly reduce metrical error;
2, flue gas was heated to more than 200 DEG C before Exhaust Gas room always, made the water tariff collection gaseous state in flue gas, reduced moisture to the impact detected, correspondingly improve accuracy of detection.The Selective absorber spectral line that laser spectral analysis technology adopts ideally gets rid of again the interference of water;
3, cleaning plant structure is simple, cost is low, high temperature resistant, there is no moving component, good reliability; Instead of original high temperature valve admirably;
4, gas barrier technology is creatively proposed, keep apart optics and flue gas, at utmost avoid the dust pollution optics in flue gas, improve the tolerance of gas compartment to dust, even the more dust in large discharge flue gas, so arrange the lower filtrator of precision in pre-service, reduce the maintenance of filtrator, improve serviceable life, improve the stream time of system simultaneously.
Accompanying drawing explanation
With reference to accompanying drawing, disclosure of the present invention will be easier to understand.Those skilled in the art it is easily understood that: these accompanying drawings only for illustrating technical scheme of the present invention, and and are not intended to be construed as limiting protection scope of the present invention.In figure:
Fig. 1 is the structure diagram of the denitrating flue gas monitoring system according to the embodiment of the present invention 1;
Fig. 2 is the process flow diagram of the denitrating flue gas monitoring method according to the embodiment of the present invention 1.
Embodiment
Fig. 1,2 and following description describe Alternate embodiments of the present invention and how to implement to instruct those skilled in the art and to reproduce the present invention.In order to instruct technical solution of the present invention, simplifying or having eliminated some conventional aspects.Those skilled in the art should understand that the modification that is derived from these embodiments or replace will within the scope of the invention.Those skilled in the art should understand that following characteristics can combine to form multiple modification of the present invention in every way.Thus, the present invention is not limited to following Alternate embodiments, and only by claim and their equivalents.
Embodiment 1:
Fig. 1 schematically illustrates the structure diagram of the denitrating flue gas monitoring system of the embodiment of the present invention, and as shown in Figure 1, described denitrating flue gas monitoring system comprises:
Sampler, filtration unit 2, gas compartment and analysis meter, these parts are all the state of the art, do not repeat them here.Sampler is arranged on flue 1.
Heating arrangement, described heating arrangement is for heating the pipeline of described filtration unit, gas compartment, connection filtration unit and gas compartment; Preferably, make flue-gas temperature in filtration unit 2, pipeline 3 and gas compartment more than 200 DEG C by heating.
Spacer assembly, described spacer assembly is used for providing gas, this gas enters in described gas compartment from air intake opening 61, isolated area is formed in the side of the contiguous flue gas of optics, keep apart optics and flue gas, at utmost avoid the dust pollution optics in flue gas, improve the tolerance of gas compartment to dust, gas is from exhausr port Exhaust Gas room.
By arranging spacer assembly on gas compartment, making to improve the tolerance of gas compartment to dust when not reducing detectability, reducing the requirement to filtration unit, the filtering accuracy of described filtration unit is 5-20 μm.
In order to improve the precision of subsequent detection, described sampler for extracting the flue gas in test environment out, and makes flue gas flow exceed 10L/min in stream.
In order to improve the precision of subsequent detection further, preferably, flue gas flows exceed 20L/min in described stream.
In order to improve the tolerance of gas compartment to dust, reduce dust to the impact of measuring, preferably, the both sides of described gas compartment arrange optical window, and at least 2 air intake openings 61,62 are separately positioned on the side that described optical window closes on flue gas.
According to above-mentioned denitrating flue gas monitoring system, preferably, described flue gas enters described gas compartment from the gas approach 60 between described air intake opening.
According to above-mentioned denitrating flue gas monitoring system, preferably, described exhausr port 63,64 is arranged on the gas compartment between described air intake opening.
According to above-mentioned denitrating flue gas monitoring system, preferably, described exhausr port is at least 2, is separately positioned on described air intake opening and flue gas enters between gas compartment position.
In order to reduce in flue gas, moisture is to the adverse effect measured, and preferably, the temperature of described filtration unit, pipeline and gas compartment is more than 200 DEG C.
In order to improve gas detect accuracy, shorten detection time, get rid of the interference of other gas, preferably, described analysis meter is laser spectral analysis instrument, specifically comprises laser instrument 4, detector 5 and analysis module.
In order to the described filtration unit of better low maintenance, alternatively, described denitrating flue gas monitoring system comprises further: cleaning plant 7, the third channel that described cleaning plant comprises body, is arranged on the first passage of the described filtration unit of the intrinsic connection be interconnected, is communicated with the second channel of described gas compartment and connection source of the gas, first passage arranges breathing space, angle between described first passage and second channel is obtuse angle or right angle, and the angle between described second channel and third channel is acute angle or right angle.
Fig. 2 schematically illustrates the process flow diagram of the method for work of any one above-mentioned denitrating flue gas monitoring system, and as shown in Figure 2, described method of work comprises the following steps:
(A1) flue gas in environment to be measured is transferred to gas compartment by pipeline after sampling, filtration, and flue gas flow is more than 10L/min, and filtering accuracy is 5-20 μm; In this sampling, filtration and transmitting procedure, flue gas is heated;
(A2) gas enters described gas compartment from air intake opening, forms isolated area, keep apart optics and flue gas, afterwards from exhausr port Exhaust Gas room in the side of the contiguous flue gas of optics; Analysis meter detects the content of flue gas in described gas compartment; Flue gas in gas compartment described in testing process is heated.
According to above-mentioned denitrating flue gas monitoring method, alternatively, described denitrating flue gas monitoring method comprises the steps: further
(B1) source of the gas is opened, close sampler, the gas that source of the gas provides enters into breathing space in first passage from third channel and expands, thus the flue gas of gas compartment is drawn into first passage by second channel, and combination gas enters and oppositely clears up described filtration unit.
Be according to the benefit that denitrating flue gas monitoring system and the method for the present embodiment 1 reach: gas forms isolated area in the side of the contiguous flue gas of optics, farthest avoid the dust pollution optics in flue gas, improve the tolerance of gas compartment to dust, so arrange the filtrator that precision is lower, reduce the maintenance of filtrator, improve serviceable life, improve the stream time of system simultaneously.Flue gas was heated to more than 200 DEG C before Exhaust Gas room always, made the water tariff collection gaseous state in flue gas, reduced moisture to the impact detected, correspondingly improve accuracy of detection.The Selective absorber spectral line that laser spectral analysis technology adopts ideally gets rid of again the interference of water.Flue gas suitable make follow-up testing result and truth deviation very little, greatly reduce metrical error.
Embodiment 2:
According to denitrating flue gas monitoring system and the application examples of method in escape ammonia monitoring of the embodiment of the present invention 1.
In the denitrating flue gas monitoring system of this application examples, filtration unit adopts porcelain filter, and filtering accuracy is 20 μm; Electrical heating block is set in the case of filtration unit, pipeline arranges electric-heating belt, gas compartment adopt stainless steel make cylinder, be arranged on there is electrical heating block case in.The two ends of gas compartment arrange optics window, catoptron respectively, the gas compartment of the side of described optics window, the contiguous flue gas of catoptron arranges the air intake opening for passing into isolation gas, on gas compartment between two air intake openings, (centre as the gas compartment with air intake opening the same side) arranges gas approach, two exhausr ports are separately positioned on the gas compartment between gas approach and air intake opening, closer to air intake opening, and be in the both sides of gas compartment respectively with air intake opening (and gas approach).Analysis meter adopts laser gas analyzer, laser emission wavelength corresponds to the absorption line of the ammonia of the interference such as gas of getting rid of water, laser instrument, detector are arranged on the same side of gas compartment and are in the outside of described case, and analysis module is also in outside case, avoids the impact of being heated.By the heating of heating arrangement, make flue-gas temperature in filtration unit, pipeline and gas compartment more than 200 DEG C, as 250 DEG C, 280 DEG C etc.Gas and the source of the gas of isolation all adopt pressurized air.Be right angle between first passage and second channel, the angle between second channel and third channel is 30 degree.
Denitrating flue gas monitoring method is specially:
Close source of the gas, the flue gas in flue, through sampling probe, filtration, is transferred to gas compartment by pipeline afterwards; By the heating of heating arrangement, make flue-gas temperature in filtration unit, pipeline and gas compartment more than 200 DEG C, as 250 DEG C, 280 DEG C etc.; The flow of flue gas in stream is 10L/min;
Pressurized air enters in gas compartment from air intake opening, air insulated district is formed respectively in the side of optics window and the contiguous flue gas of catoptron, keep apart flue gas and optics window (and catoptron), prevent dust pollution optics window, catoptron in flue gas, together discharge from exhausr port with the flue gas of gas indoor afterwards; The measurement light corresponding to ammonia absorbing wavelength that laser instrument sends through optics window laggard enter in gas compartment, pass for being reflected by catoptron after air, flue gas, air, afterwards again through the air of catoptron side air, flue gas, diaphragm side, receive through being detected device after described optics window afterwards, signal send analysis module, and analysis module draws the content of ammonia in flue gas gas according to DLAS technology;
After monitoring system runs a period of time, close sampler, open source of the gas, the breathing space that pressurized air enters in first passage from third channel expands, and then the flue gas in gas compartment and the pressurized air that enters are drawn into first passage, mixed gas flows in filtrator at a high speed, thus serves reverse cleaning effect, finally enters in flue.
Embodiment 3:
According to denitrating flue gas monitoring system and the application examples of method in escape ammonia monitoring of the embodiment of the present invention 1.
In the denitrating flue gas monitoring system of this application examples, filtration unit adopts silk floss filtrator, and filtering accuracy is 8 μm; Electrical heating block is set in filtration unit, pipeline arranges electric-heating belt, gas compartment adopt stainless steel make cylinder, be arranged on there is electrical heating block case in.The two ends of gas compartment arrange the first optics window, the second optical window respectively, the gas compartment of the side of described first optics window, the contiguous flue gas of the second optics window arranges the air intake opening for passing into isolation gas, on gas compartment between two air intake openings, (centre as the gas compartment with air intake opening the same side) arranges gas approach, two exhausr ports are separately positioned on the gas compartment between gas approach and air intake opening, closer to air intake opening, and be in the both sides of gas compartment respectively with air intake opening (and gas approach).Analysis meter adopts laser gas analyzer, laser emission wavelength corresponds to the absorption line of the ammonia of the interference such as gas of getting rid of water, laser instrument, detector are separately positioned on the both sides of gas compartment and are in the outside of described case, and analysis module is also in outside case, avoids the impact of being heated.By the heating of heating arrangement, make flue-gas temperature in filtration unit, pipeline and gas compartment more than 200 DEG C, as 220 DEG C, 260 DEG C etc.The gas of isolation adopts compressed nitrogen, and source of the gas adopts pressurized air.Be 150 degree between first passage and second channel, the angle between second channel and third channel is 45 degree.
Denitrating flue gas monitoring method is specially:
Close source of the gas, the flue gas in flue, through sampling probe, filtration, is transferred to gas compartment by pipeline afterwards; By the heating of heating arrangement, make flue-gas temperature in filtration unit, pipeline and gas compartment more than 200 DEG C, as 220 DEG C, 260 DEG C etc.; The flow of flue gas in stream is 22L/min;
Compressed nitrogen enters in gas compartment from air intake opening, nitrogen isolated area is formed respectively in the side of the first optics window and the contiguous flue gas of the second optics window, keep apart flue gas and optics window, prevent dust pollution optics window in flue gas, together discharge from exhausr port with the flue gas of gas indoor afterwards; The measurement light corresponding to ammonia absorbing wavelength that laser instrument sends through the first optics window laggard enter in gas compartment, pass for nitrogen, flue gas, nitrogen, receive through being detected device after described second optics window afterwards, signal send analysis module, and analysis module draws the content of ammonia in flue gas gas according to DLAS technology.
After monitoring system runs a period of time, close sampler, open source of the gas, the breathing space that pressurized air enters in first passage from third channel expands, and then the flue gas in gas compartment and the compressed nitrogen that enters are drawn into first passage, mixed gas flows in filtrator at a high speed, thus serves reverse cleaning effect, finally enters in flue.
Above-described embodiment is all the flows exemplarily giving flue-gas temperature, metre filter precision, flue gas, certainly can also be other numerical value, if heating-up temperature is 270 DEG C, 240 DEG C, filtering accuracy is 15 μm, 10 μm, and flow is 27L/min, 23L/min etc.This for a person skilled in the art, on the basis of technical solution of the present invention, technical scheme, the implementation result of other numerical value in protection domain can expect.
Claims (8)
1. a denitrating flue gas monitoring system, described denitrating flue gas monitoring system comprises gas compartment, analysis meter; It is characterized in that: described denitrating flue gas monitoring system comprises further:
Filtration unit, described filtration unit arranges the downstream of sampler, and filtering accuracy is 5-20 μm;
Spacer assembly, described spacer assembly is used for providing gas, and this gas enters in described gas compartment from air intake opening, forms isolated area in the side of the contiguous flue gas of optics, after from exhausr port Exhaust Gas room;
Sampler, described sampler for extracting the flue gas in test environment out, and makes flue gas flow exceed 10L/min in stream;
Heating arrangement, described heating arrangement is for heating the pipeline of described filtration unit, gas compartment, connection filtration unit and gas compartment;
Cleaning plant, the third channel that described cleaning plant comprises body, is arranged on the first passage of the described filtration unit of the intrinsic connection be interconnected, is communicated with the second channel of described gas compartment and connection source of the gas, first passage arranges breathing space, angle between described first passage and second channel is obtuse angle or right angle, and the angle between described second channel and third channel is acute angle or right angle.
2. denitrating flue gas monitoring system according to claim 1, is characterized in that: the both sides of described gas compartment arrange optical window, and at least 2 air intake openings are separately positioned on the side that described optical window closes on flue gas to be measured in gas compartment.
3. denitrating flue gas monitoring system according to claim 1, is characterized in that: flue gas flows exceed 20L/min in stream.
4. denitrating flue gas monitoring system according to claim 1, is characterized in that: described exhausr port is at least 2, is separately positioned between described air intake opening and gas approach.
5. denitrating flue gas monitoring system according to claim 1, is characterized in that: the temperature of described filtration unit, pipeline and gas compartment is more than 200 DEG C.
6. denitrating flue gas monitoring system according to claim 1, is characterized in that: described analysis meter is laser spectral analysis instrument.
7. a denitrating flue gas monitoring method, described denitrating flue gas monitoring method comprises the following steps:
(A1) flue gas in environment to be measured is transferred to gas compartment by pipeline after sampling, filtration, and flue gas flow is more than 10L/min, and filtering accuracy is 5-20 μm; In this sampling, filtration and transmitting procedure, flue gas is heated;
(A2) gas enters described gas compartment from air intake opening, forms isolated area, keep apart optics and flue gas, afterwards from exhausr port Exhaust Gas room in the side of the contiguous flue gas of optics; Analysis meter detects the content of flue gas in described gas compartment; Flue gas in gas compartment described in testing process is heated;
(A3) open source of the gas, close sampler, the gas that source of the gas provides enters into breathing space in first passage from third channel and expands, thus the flue gas of gas compartment is drawn into first passage by second channel, and combination gas enters and clears up filtration unit;
Be interconnected in the body that described first passage, second channel, third channel are arranged on cleaning plant, the angle between described first passage and second channel is obtuse angle or right angle, and the angle between described second channel and third channel is acute angle or right angle.
8. denitrating flue gas monitoring method according to claim 7, is characterized in that: described flue gas is heated to more than 200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282754.6A CN103344591B (en) | 2013-06-28 | 2013-06-28 | Denitrating flue gas monitoring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282754.6A CN103344591B (en) | 2013-06-28 | 2013-06-28 | Denitrating flue gas monitoring system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103344591A CN103344591A (en) | 2013-10-09 |
| CN103344591B true CN103344591B (en) | 2015-11-25 |
Family
ID=49279405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310282754.6A Active CN103344591B (en) | 2013-06-28 | 2013-06-28 | Denitrating flue gas monitoring system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103344591B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728420A (en) * | 2013-12-30 | 2014-04-16 | 聚光科技(杭州)股份有限公司 | Online monitoring method for gas inside pipeline |
| NO348809B1 (en) * | 2015-11-09 | 2025-06-10 | Neo Monitors As | Gas analyzer with protection of Optical components |
| CN108548699B (en) * | 2018-06-28 | 2023-11-07 | 锦州华冠环境科技实业股份有限公司 | Hydrogen chloride on-line monitoring analysis system |
| CN112730182A (en) * | 2020-12-31 | 2021-04-30 | 杭州春来科技有限公司 | Smoke meter and working method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953025Y (en) * | 2006-09-11 | 2007-09-26 | 王健 | Fumes discharging continuous monitoring system |
| CN102393372A (en) * | 2011-10-20 | 2012-03-28 | 北京雪迪龙科技股份有限公司 | Optical system of flue gas monitoring instrument and flue gas monitoring instrument |
| CN202404044U (en) * | 2011-12-31 | 2012-08-29 | 聚光科技(杭州)股份有限公司 | Smoke monitoring system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140183380A1 (en) * | 2011-05-20 | 2014-07-03 | Horiba, Ltd. | Measuring unit and gas analyzing apparatus |
-
2013
- 2013-06-28 CN CN201310282754.6A patent/CN103344591B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953025Y (en) * | 2006-09-11 | 2007-09-26 | 王健 | Fumes discharging continuous monitoring system |
| CN102393372A (en) * | 2011-10-20 | 2012-03-28 | 北京雪迪龙科技股份有限公司 | Optical system of flue gas monitoring instrument and flue gas monitoring instrument |
| CN202404044U (en) * | 2011-12-31 | 2012-08-29 | 聚光科技(杭州)股份有限公司 | Smoke monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103344591A (en) | 2013-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103344590B (en) | Flue gas denitrification monitoring system and method | |
| CN1866027B (en) | Integrated gas online detector | |
| CN105865853A (en) | Online analysis system of ship exhaust emission | |
| CN103344591B (en) | Denitrating flue gas monitoring system and method | |
| CN101387616A (en) | Measurement method and apparatus for humidity in discharged flue gas | |
| CN203941102U (en) | A kind of solid waste incineration is processed on-line analysis system | |
| CN202101931U (en) | Flue gas extraction and analysis device adopting hot method | |
| CN105865855A (en) | Flue gas sampling and purifying system for on-line detection of dioxine | |
| CN103852438A (en) | Online solid waste incineration treatment analysis system | |
| CN104898719A (en) | Pollution VOC concentration and total discharge amount real-time monitoring system | |
| CN108801718A (en) | A kind of tail gas on-line monitoring system peculiar to vessel | |
| KR101760259B1 (en) | Extractive continuous ammonia monitoring system | |
| CN104458869A (en) | Online ammonia escape monitoring and analyzing method and online ammonia escape monitoring and analyzing instrument | |
| CN116046477A (en) | A double-pipeline gas collection system and method | |
| CN103335970A (en) | Flue gas denitration monitoring system and method | |
| CN202994770U (en) | System for monitoring smoke continuously | |
| TW202127034A (en) | System and method for monitoring exhaust gas | |
| CN203350180U (en) | Flue gas denitrification monitoring system | |
| CN205157433U (en) | Be used for engine exhaust measuring gas circuit system | |
| CN107271365A (en) | A kind of device of on-line determination the escaping of ammonia in situ | |
| CN102087179B (en) | Infrared gas analysis pretreatment system | |
| CN216520991U (en) | Pipeline leakage detection system | |
| CN203350181U (en) | Flue gas denitrification monitoring system | |
| CN203350182U (en) | Flue gas denitrification monitoring system | |
| CN203732434U (en) | Flue gas in-situ monitoring system and flue gas in-situ monitoring probe thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |