CN110044666A - A kind of high-temperature high dust flue gas sampling system and method - Google Patents
A kind of high-temperature high dust flue gas sampling system and method Download PDFInfo
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- CN110044666A CN110044666A CN201910449779.8A CN201910449779A CN110044666A CN 110044666 A CN110044666 A CN 110044666A CN 201910449779 A CN201910449779 A CN 201910449779A CN 110044666 A CN110044666 A CN 110044666A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000003546 flue gas Substances 0.000 title claims abstract description 85
- 238000005070 sampling Methods 0.000 title claims abstract description 72
- 239000000428 dust Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 239000002826 coolant Substances 0.000 claims description 47
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 23
- 239000012528 membrane Substances 0.000 claims description 10
- 229910001385 heavy metal Inorganic materials 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000002161 passivation Methods 0.000 claims description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 4
- 229940105305 carbon monoxide Drugs 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 claims description 3
- 230000005298 paramagnetic effect Effects 0.000 claims description 3
- HNBFUFIYQWYCDM-UHFFFAOYSA-N oxygen(2-) sulfane titanium(4+) Chemical compound [O--].[O--].S.[Ti+4] HNBFUFIYQWYCDM-UHFFFAOYSA-N 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 239000013618 particulate matter Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000000443 aerosol Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 235000008645 Chenopodium bonus henricus Nutrition 0.000 description 1
- 244000138502 Chenopodium bonus henricus Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000012491 analyte Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- 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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- 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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2211—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with cyclones
-
- 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
-
- 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
- G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A kind of high-temperature high dust flue gas sampling system and method disclosed by the invention, belongs to environmental monitoring technology field.Including passing through the sequentially connected sampling head of pipeline, cyclone separator, cooler, dehumidifier, accurate filter, detection instrument and aspiration pump.Flue gas is carried out by heat exchange cooling tube tentatively cooling, the bulky grain of non-test target is removed through cyclone separator again, further cool down through cooler again, moisture removal, accurate filter is gone further to remove bulky grain through dehumidifier, after reaching sampling and measurement demand, measured using detection instrument.Flue gas is cooling through two-stage, and good cooling results can satisfy measurement request；Dust cover on sampling head is able to carry out primary dedusting, avoids bulky grain from entering sampling head and causes pipeline blockage.Apparatus structure design is reasonable, multiple functional, and thermal adaptability is wide, meets sampling and the measurement needs of various occasions, flexibly and easily.
Description
Technical field
The invention belongs to environmental monitoring technology fields, and in particular to a kind of high-temperature high dust flue gas sampling system and method.
Background technique
The atmosphere pollution that the mankind generate during using energy source mainly include sulfur dioxide, nitrogen oxides, aerosol,
Heavy metal etc., these pollutants are more than that certain limit just constitutes a serious threat to human health in an atmosphere.Currently, China is
Substantially the continuous detection to these atmosphere pollutions is realized.But the detection of some high-temperature high dust flue gas is difficult to realize.It is high
Warm, the high general temperature of cloud of dust gas is between 350 DEG C -1100 DEG C, and dust content is in 10g/m3More than.Existing sample acquisition and inspection
Examining system can not work under such exacting terms, and particulate matter a large amount of first easily blocked sample acquires pipeline, in addition cigarette
Gas sampling system mainly uses compressor refrigeration come the flue gas that cools down, and scarce capacity is to be down to suitable temperature for the flue gas of such high temperature
Degree.For example, the detection of the original nitrogen oxides of circulating fluidized bed boiler, is limited to furnace outlet high temperature and high dirt environment, Zhi Nengting
It transports denitrification apparatus and nitrous oxides concentration is detected by tail portion in-line meter.Nitrogen oxides in effluent concentration over-standard is caused to arrange again in this way
It puts, pollutes atmospheric environment.In addition, the heavy metals such as some special atmosphere pollutions such as sulfur trioxide, arsenic, mercury, lead are also required in height
It acquires and detects under warm high cloud of dust compression ring border, provide basic data further to study and controlling this kind of pollutant emission.And show
The acquisition and detection of pollutant sample under the conditions of thering is smoke collecting and detection system to cannot achieve high temperature, high dirt.
High-temperature high dust fume sample acquisition at present and detection are primarily limited to following two points: first is that flue-gas temperature reaches 350
DEG C or more when, it is difficult to high-temperature flue gas is cooled to test instrumentation acceptable temperature range；Second is that the flue gas pole of high particle content
Sampling process pipeline blockage is easily caused, representative sample cannot be collected.How accurate safety collects high-temperature high dust flue gas
Middle aerosol sample is a problem to be solved.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of high-temperature high dust flue gas sampling system and method,
Apparatus structure design is reasonable, multiple functional, and thermal adaptability is wide, meets sampling and the measurement needs of various occasions, flexibly side
Just.
The present invention is to be achieved through the following technical solutions:
The invention discloses a kind of high-temperature high dust flue gas sampling systems, comprising: passes through the sequentially connected sampling head of pipeline, rotation
Wind separator, cooler, dehumidifier, accurate filter, detection instrument and aspiration pump；Pipe between sampling head and cyclone separator
Road is arranged with heat exchange cooling tube, and heat exchange cooling tube is equipped with cooling medium entrance and cooling medium exports, and cooling medium passes through
Cooling medium entrance and cooling medium outlet circulation cool down the flue gas in pipeline；It is removably connected on sampling head anti-
Dust hood.
Preferably, cooling medium entrance and cooling medium outlet are respectively provided at the both ends of heat exchange cooling tube, and cooling medium
Entrance and cooling medium outlet are separated by 180 ° of settings in heat exchange cooling tube circumferential direction, cooling medium and pipeline in the cooling tube that exchanges heat
The flow direction of interior flue gas is opposite.
Preferably, cyclone separator includes the upstream cyclone and downstream cyclonic separator of two-stage series connection, upstream rotation
The incising control of wind separator is greater than downstream cyclonic separator.
Preferably, cyclone separator lower part is connected with dust compartment, and the pipeline detected between instrument and aspiration pump is equipped with stream
Meter.
Preferably, dust cover and sampling head use Wear-resistant, high-temperature resistant material.
Preferably, dehumidifier is water filtration membrane dehumidifier or silica gel dehumidifier.
Preferably, ultra-fine filter membrane is equipped in accurate filter.
Preferably, detection instrument is sulfur dioxide detector, nitrogen oxides detector, organic matter detector, heavy metal inspection
Survey the one or more of instrument, carbonmonoxide detector and paramagnetic oxygen conten analyser.
Preferably, the inner wall of sampling head, cyclone separator, cooler, dehumidifier, accurate filter and pipeline is passivation
Layer.
The invention also discloses using above-mentioned high-temperature high dust flue gas sampling system carry out high-temperature high dust flue gas sampling method,
It include: that dust cover is fixedly mounted on sampling head, sampling head is placed in high-temperature high dust flue gas and back to flue gas flow direction, and starting is taken out
Air pump, cooling medium are down to flue-gas temperature predetermined by cooling medium entrance-heat exchange cooling tube-cooling medium outlet circulation
Temperature further decreases temperature by cooler by cyclone separator treated flue gas, removes residual water by dehumidifier
Point, then by into detection instrument, completing the sampling and measurement of high-temperature high dust flue gas after the dedusting of accurate filter depth.
Compared with prior art, the invention has the following beneficial technical effects:
A kind of high-temperature high dust flue gas sampling system disclosed by the invention carries out flue gas by heat exchange cooling tube preliminary cold
But it, then through cyclone separator by the bulky grain of non-test target removes, then further cools down through cooler, removed through dehumidifier
Moisture, accurate filter further remove bulky grain, after reaching sampling and measurement demand, are measured using detection instrument.Cigarette
Gas is cooling through two-stage, and good cooling results can satisfy measurement request；Dust cover on sampling head is able to carry out primary dedusting, keeps away
Exempt from bulky grain and enter sampling head to cause pipeline blockage.Apparatus structure design is reasonable, multiple functional, and thermal adaptability is wide, meets
The sampling and measurement of various occasions need, flexibly and easily.
Further, cooling medium entrance and cooling medium outlet are respectively provided at the both ends of heat exchange cooling tube and are separated by
180 ° of settings, increase the stroke of cooling medium；The flow direction of cooling medium and the flue gas in pipeline is on the contrary, counterflow heat exchange mentions
High cooling effect.
Further, under cyclone separator is arranged using two-stage series connection, and the incising control of upstream cyclone is greater than
Cyclone separator is swum, can be realized the depth dedusting of flue gas, the incising control of upstream cyclone is separated greater than downstream cyclone
Device, so that the flue dust in flue gas realizes that two-stage separation removal, removal effect are good by partial size difference.
Further, the concentration of solid particle in the high-temperature flue gas of generation of burning heat transfer coefficient is influenced it is quite important,
The solid particulate matter of different high-temperature areas is widely different, grasps high-temperature area particle concentration data to judging heat-transfer effect and refer to
Pilot burning plays a significant role.In general, people substantially judge concentration of solid particles using pressure decline method measurement, but this method is missed
Poor very big, pressure drop cannot really reflect concentration of solid particles.And the present apparatus passes through the dust compartment of cyclone separator lower part, Ke Yishou
Collect particulate matter, cooperates flowmeter, carry out acquisition and the Correlative data analysis of aerosol sample, obtain accurate data.
Further, dust cover and sampling head use Wear-resistant, high-temperature resistant material, and it is dense that high temperature, flue dust are protruded into when avoiding sampling
It spends high flue and receives damage, improve the service life of device.
Further, dehumidifier use water filtration membrane dehumidifier or silica gel dehumidifier, can depth removal flue gas in remnants
Moisture improves the precision of measurement numerical value.
Further, the ultra-fine filter membrane in accurate filter, can further remove moisture removal and particulate matter.
Further, detection instrument can carry out type selecting according to actual needs, can be used alone or in combination, meet various
Test needs.
Further, each equipment and pipeline inner wall are passivation layer in device, test object can be prevented to be adsorbed, and improve and survey
Accuracy of measurement.
The method disclosed by the invention for carrying out high-temperature high dust flue gas sampling using above-mentioned high-temperature high dust flue gas sampling system, leads to
Reasonable operating procedure is crossed, the sampling and measurement of high-temperature high dust flue gas particle are instructed, safe collects flue gas, obtains accurate
Measurement result, the device are easy to operate, practical.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
In figure: 1 is dust cover, and 2 be sampling head, and 3 be the cooling tube that exchanges heat, and 4 be cooling medium entrance, and 5 go out for cooling medium
Mouthful, 6 be cyclone separator, and 6-1 is upstream cyclone, and 6-2 is downstream cyclonic separator, and 7 be dust compartment, and 8 be cooler,
9 be dehumidifier, and 10 be accurate filter, and 11 be detection instrument, and 12 be flowmeter, and 13 be aspiration pump.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing, and content is explanation of the invention rather than limits
It is fixed:
It is a kind of high-temperature high dust flue gas sampling system of the invention such as Fig. 1, including passes through the sequentially connected sampling head of pipeline
2, cyclone separator 6, cooler 8, dehumidifier 9, accurate filter 10, detection instrument 11 and aspiration pump 13；Sampling head 2 and whirlwind
Heat exchange cooling tube 3 is arranged on pipeline between separator 6, heat exchange cooling tube 3 is equipped with cooling medium entrance 4 and cooling medium
Outlet 5, cooling medium entrance 4 and cooling medium outlet 5 are respectively provided at the both ends of heat exchange cooling tube 3, and 4 He of cooling medium entrance
Cooling medium outlet 5 is separated by 180 ° of settings in heat exchange 3 circumferential direction of cooling tube, in the cooling medium and pipeline in the cooling tube 3 that exchanges heat
Flue gas flow direction on the contrary, cooling medium by cooling medium entrance 4 and cooling medium outlet 5 circulation to the cigarette in pipeline
Gas is cooled down.Dust cover 1 is removably connected on sampling head 2.Dust cover 1 and sampling head 2 use Wear-resistant, high-temperature resistant material,
Including types such as high temperature alloy, high molecular synthetic materials, such as: 06Cr25Ni20 stainless steel, refractory ceramics.Dehumidifier 9 can be with
Using water filtration membrane dehumidifier or silica gel dehumidifier.Ultra-fine filter membrane is equipped in accurate filter 10, type includes ultra-fine quartz fibre
Filter membrane, ultra-fine fibre glass filter membrane etc..Sampling head 2, cyclone separator 6, cooler 8, dehumidifier 9, accurate filter 10 and pipe
The inner wall on road is the passivation layer by Passivation Treatment.Detecting instrument 11 can be detected using sulfur dioxide detector, nitrogen oxides
One or more combinations of instrument, organic matter detector, heavy metal detector, carbonmonoxide detector, paramagnetic oxygen conten analyser
It uses, is selected and connected according to actual needs.Cooler 8 can use aerial cooler or water cooler.
Cyclone separator 6 preferably uses the upstream cyclone 6-1 and downstream cyclonic separator 6-2 of two-stage series connection,
The incising control of upstream cyclone 6-1 is greater than downstream cyclonic separator 6-2.6 lower part of cyclone separator is connected with dust compartment
7, the pipeline detected between instrument 11 and aspiration pump 13 is equipped with flowmeter 12.
It is further explained below with reference to several functions of the embodiment to high-temperature high dust flue gas sampling system:
Embodiment 1
The acquisition and detection of conventional fume sample, dust cover 1 is fixed on sampling head 2, and sampling head 2 is back to flue gas stream
To being placed in high-temperature high dust flue gas, start aspiration pump 13, cooling medium is not passed through in the cooling tube 3 that exchanges heat, flue gas is by whirlwind point
From device 6, cooler 8, enter detection instrument 11 after dehumidifier 9, accurate filter 10 and detected.
Embodiment 2
Circulating fluidized bed boiler original nitrogen oxides detection, 800 DEG C -1100 DEG C of smoke temperature, dust contained flue gas concentration 50g/m3 with
On, dust cover 1 is fixed on sampling head 2, sampling head 2 is placed in high-temperature high dust flue gas back to flue gas flow direction, starts aspiration pump
13, cold fluid (cooling medium) enters heat exchange cooling tube 3 by cooling medium entrance 4, and the adjustment cold flow scale of construction will be into whirlwind point
110 DEG C are down to from 6 flue-gas temperature of device, smoke temperature is down to by the flue gas by the pre- dedusting of two stage cyclone separator 6 by cooler 8
20 DEG C, residual moisture is removed by dehumidifier 9, then by 10 depth dedusting of accurate filter, examine into nitrogen oxides detector
Survey the original nitrous oxides concentration of flue gas.
Embodiment 3
Aerosol sample acquires in high-temperature high dust flue gas, and the sampling head 2 after removing dust cover 1, face flue gas flow direction is placed in
In high-temperature high dust flue gas, starting aspiration pump 13 is adjusted to the constant speed speed of evacuation, and cold fluid enters heat exchange by cooling medium entrance 4
Cooling tube 3, the adjustment cold flow scale of construction will enter 6 flue-gas temperature of cyclone separator and be down to 110 DEG C, and flue gas passes through two stage cyclone separator
6 particulate matters enter dust compartment 7, and flue gas removes residual moisture by cooler 8, then by dehumidifier 9, using accurate filter
10 depth dedustings, 12 sampling volume of recording flowmeter collect two dust compartments, 7 endoparticle object sample.
Embodiment 4
Carbonomonoxide concentration and measurement of oxygen content instruct firing optimization in high-temperature flue gas, 350 DEG C of smoke temperature or more before economizer,
Dust cover 1 is fixed on sampling head 2, sampling head 2 is placed in high-temperature high dust flue gas back to flue gas flow direction, start aspiration pump 13,
Cold fluid enters heat exchange cooling tube 3 by cooling medium entrance 4, and the adjustment cold flow scale of construction will enter 6 flue-gas temperature of cyclone separator
110 DEG C are down to, smoke temperature is down to 20 DEG C, passes through dehumidifying by the flue gas by the pre- dedusting of two stage cyclone separator 6 by cooler 8
Device 9 removes residual moisture, then by 10 depth dedusting of accurate filter, detects carbonomonoxide concentration into carbonmonoxide detector
And oxygen content, according to test data adjustment burning institute's required airflow.
Embodiment 5
350 DEG C of boiler smoke temperature or more high-temperature high dust flue gases, the heavy metals sample acquisition testing such as mercury in flue gas before economizer, will
Dust cover 1 is fixed on sampling head 2, and sampling head 2 is placed in high-temperature high dust flue gas back to flue gas flow direction, starts aspiration pump 13, cold
Fluid enters heat exchange cooling tube 3 by cooling medium entrance 4, and the adjustment cold flow scale of construction will enter 6 flue-gas temperature of cyclone separator and drop
To 180 DEG C, the flue gas by the pre- dedusting of two stage cyclone separator 6 removes residual moisture by dehumidifier 9 by cooler 8, then
By 10 depth dedusting of accurate filter, contain into gaseous states heavy metals such as heavy metal gas pollutant detector test gas mercuries
Amount.
Above-mentioned specific embodiment is done to spirit of that invention for example, only listing the original nitrogen of circulating fluidized bed boiler
Aoxidize analyte detection, the acquisition of high-temperature high dust flue gas particles sample, in high-temperature flue gas carbonomonoxide concentration and measurement of oxygen content and
The embodiment of gaseous state heavy metal analysis in high-temperature high dust flue gas, but as known to those skilled in the art, the present disclosure applies equally to height
Used in temperature, Gao Chen, the solid particulate matter acquisition of high temperature and the ranges such as high dirt and room temperature and gas detecting system, and can root
Suitable cooling medium is selected according to actual needs and uses the material met the requirements, to improve the operational reliability and standard of system
True property.It used dust cover 1 although this paper is more, sampling head 2, heat exchange cooling tube 3, cyclone separator 6, dust compartment 7, cooled down
The terms such as device 8, dehumidifier 9, accurate filter 10, but a possibility that be not precluded using other terms.Only using these terms
Merely for convenience describes and explains essence of the invention, and being construed as any additional limitation is all and this hair
What bright spirit was disagreed.
The above, the only part in embodiment of the present invention, concrete operations can be altered according to field condition, must
It is understood that those skilled in the art can be designed various other improvement and embodiment, but in relation to the figure and claim institute
The change of the relevant apparatus position and its part stated should belong in protection scope of the present invention.
Claims (10)
1. a kind of high-temperature high dust flue gas sampling system, which is characterized in that including passing through the sequentially connected sampling head of pipeline (2), rotation
Wind separator (6), cooler (8), dehumidifier (9), accurate filter (10), detection instrument (11) and aspiration pump (13)；Sampling
Heat exchange cooling tube (3) is arranged on pipeline between head (2) and cyclone separator (6), heat exchange cooling tube (3) is equipped with cooling be situated between
Matter entrance (4) and cooling medium outlet (5), cooling medium pass through cooling medium entrance (4) and cooling medium outlet (5) circulation pair
Flue gas in pipeline is cooled down；Dust cover (1) is removably connected on sampling head (2).
2. high-temperature high dust flue gas sampling system according to claim 1, which is characterized in that cooling medium entrance (4) and cold
But media outlet (5) is respectively provided at the both ends of heat exchange cooling tube (3), and cooling medium entrance (4) and cooling medium outlet (5) exist
It is separated by 180 ° of settings in heat exchange cooling tube (3) circumferential direction, the flowing of the flue gas in cooling medium and pipeline in heat exchange cooling tube (3)
It is contrary.
3. high-temperature high dust flue gas sampling system according to claim 1, which is characterized in that cyclone separator (6) includes two
The concatenated upstream cyclone (6-1) of grade and downstream cyclonic separator (6-2), the cutting grain of upstream cyclone (6-1)
Diameter is greater than downstream cyclonic separator (6-2).
4. high-temperature high dust flue gas sampling system according to claim 1, which is characterized in that cyclone separator (6) lower part connects
It is connected to dust compartment (7), the pipeline detected between instrument (11) and aspiration pump (13) is equipped with flowmeter (12).
5. high-temperature high dust flue gas sampling system according to claim 1, which is characterized in that dust cover (1) and sampling head (2)
Using Wear-resistant, high-temperature resistant material.
6. high-temperature high dust flue gas sampling system according to claim 1, which is characterized in that dehumidifier (9) removes for water filtration membrane
Wet device or silica gel dehumidifier.
7. high-temperature high dust flue gas sampling system according to claim 1, which is characterized in that be equipped in accurate filter (10)
Ultra-fine filter membrane.
8. high-temperature high dust flue gas sampling system according to claim 1, which is characterized in that detection instrument (11) is titanium dioxide
Sulfur determination apparatus, nitrogen oxides detector, organic matter detector, heavy metal detector, carbonmonoxide detector and paramagnetic oxygen content
Analyzer it is one or more.
9. high-temperature high dust flue gas sampling system according to claim 1, which is characterized in that sampling head (2), cyclone separator
(6), the inner wall of cooler (8), dehumidifier (9), accurate filter (10) and pipeline is passivation layer.
10. carrying out high-temperature high dust flue gas sampling using high-temperature high dust flue gas sampling system described in claim 1~9 any one
Method characterized by comprising
Dust cover (1) is fixedly mounted on sampling head (2), sampling head (2) is placed in high-temperature high dust flue gas and back to flue gas stream
To starting aspiration pump (13), cooling medium is followed by cooling medium entrance (4)-heat exchange cooling tube (3)-cooling medium outlet (5)
Ring makes flue-gas temperature be down to predetermined temperature, is further dropped by cyclone separator (6) treated flue gas by cooler (8)
Low temperature removes residual moisture by dehumidifier (9), then by after accurate filter (10) depth dedusting, into detection instrument
(11), the sampling and measurement of high-temperature high dust flue gas are completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910449779.8A CN110044666A (en) | 2019-05-28 | 2019-05-28 | A kind of high-temperature high dust flue gas sampling system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910449779.8A CN110044666A (en) | 2019-05-28 | 2019-05-28 | A kind of high-temperature high dust flue gas sampling system and method |
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Cited By (8)
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| CN110542600A (en) * | 2019-09-24 | 2019-12-06 | 张家铜 | High-temperature and high-dust flue gas sampling system |
| CN110823749A (en) * | 2019-11-26 | 2020-02-21 | 陕西延长石油（集团）有限责任公司 | Multifunctional high-pressure reaction evaluation device and method |
| CN111308024A (en) * | 2020-04-10 | 2020-06-19 | 华能国际电力股份有限公司 | System and method for gridding measurement of gaseous components in flue gas |
| CN111323415A (en) * | 2020-04-16 | 2020-06-23 | 中科易朔(厦门)防火技术服务有限公司 | Testing device and testing method for detecting smoke toxicity generated by high polymer material |
| CN112345311A (en) * | 2020-11-09 | 2021-02-09 | 哈尔滨工业大学 | High-temperature flue gas particulate matter sampling gun for preventing accumulated dust from blocking pipeline |
| CN112755661A (en) * | 2021-04-08 | 2021-05-07 | 赛默飞世尔（上海）仪器有限公司 | Cyclone separator, gas particulate matter concentration detection equipment and concentration detection method |
| JP7174814B1 (en) * | 2021-07-20 | 2022-11-17 | 三菱重工パワーインダストリー株式会社 | Sampling equipment and boiler plant |
| WO2023193354A1 (en) * | 2022-04-06 | 2023-10-12 | 苏州西热节能环保技术有限公司 | Mercury sampling apparatus based on active carbon adsorption under high temperature, and control method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542600A (en) * | 2019-09-24 | 2019-12-06 | 张家铜 | High-temperature and high-dust flue gas sampling system |
| CN110823749A (en) * | 2019-11-26 | 2020-02-21 | 陕西延长石油（集团）有限责任公司 | Multifunctional high-pressure reaction evaluation device and method |
| CN111308024A (en) * | 2020-04-10 | 2020-06-19 | 华能国际电力股份有限公司 | System and method for gridding measurement of gaseous components in flue gas |
| WO2021203669A1 (en) * | 2020-04-10 | 2021-10-14 | 西安热工研究院有限公司 | System and method for performing grid measurement on gaseous components in flue gas |
| CN111323415A (en) * | 2020-04-16 | 2020-06-23 | 中科易朔(厦门)防火技术服务有限公司 | Testing device and testing method for detecting smoke toxicity generated by high polymer material |
| CN112345311A (en) * | 2020-11-09 | 2021-02-09 | 哈尔滨工业大学 | High-temperature flue gas particulate matter sampling gun for preventing accumulated dust from blocking pipeline |
| CN112755661A (en) * | 2021-04-08 | 2021-05-07 | 赛默飞世尔（上海）仪器有限公司 | Cyclone separator, gas particulate matter concentration detection equipment and concentration detection method |
| JP7174814B1 (en) * | 2021-07-20 | 2022-11-17 | 三菱重工パワーインダストリー株式会社 | Sampling equipment and boiler plant |
| WO2023193354A1 (en) * | 2022-04-06 | 2023-10-12 | 苏州西热节能环保技术有限公司 | Mercury sampling apparatus based on active carbon adsorption under high temperature, and control method |
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