CN107843464A - The SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional and method - Google Patents

The SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional and method Download PDF

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Publication number
CN107843464A
CN107843464A CN201711250934.0A CN201711250934A CN107843464A CN 107843464 A CN107843464 A CN 107843464A CN 201711250934 A CN201711250934 A CN 201711250934A CN 107843464 A CN107843464 A CN 107843464A
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flue gas
sampling
serpentine condenser
concentration
absorbing liquid
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陈晓露
邓世丰
赵钦新
王云刚
梁志远
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Xian Jiaotong University
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Xian Jiaotong University
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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
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34—Purifying; Cleaning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/42—Low-temperature sample treatment, e.g. cryofixation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/96—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation using ion-exchange

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a kind of SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional and method, the device are made up of heat tracing sampling gun, multigroup serpentine condenser and twoport flask, bottom rotating circular disk, sealed cylinder, gas flowmeter, syringe pump, portable ion chromatograph and respective line and auxiliary device；By air pump work produce negative pressure is extracted from boiler flue flue gas into constant temperature working medium cool down serpentine condenser in be controlled condensation；After one group of serpentine condenser gathers, the rotation of bottom rotating circular disk, next group of serpentine condenser is connected to flue gas control condensation collection pipeline；The serpentine condenser for having adsorbed sulfuric acid droplets is connected to SO4 2‑Measurement of concetration pipeline, the absorbing pure water sulfuric acid droplets that volume is determined in syringe pump penetrating enter twoport flask, and portable ion chromatograph extracts absorbing liquid by solution pump, detects the SO in absorbing liquid4 2‑Concentration, and calculate SO in flue gas with reference to parameters such as the flue gas volumes that gas flowmeter measures3And H2SO4Concentration.

Description

The SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional and method
Technical field
The present invention relates to detection of exhaust gas compositions field, and in particular to micro SO in a kind of flue gas3And H2SO4Sample detecting fills Put and method.
Background technology
Energy-conservation and the direction that emission reduction is current boiler technology development.Exhaust gas temperature is reduced by flue gas acid dew point corrosion system About；SCR denitration technology can make a small amount of SO2It is converted into SO3, the acid dew piont corrosion of aggravation downstream flue；Wet Flue Gas Desulfurization Technique can only take off Except part SO3, the SO in desulfurization neat stress3Acid mist can induce pipeline, equipment, chimney corrosion；Desulfurization heat smoke is emitted into air Cooling generates sulfuric acid droplet and produces white, blueness, purple feathering, causes transparency decline of discharging fume.SO in Accurate Determining flue gas3 Content is control SO3Discharge, probes into SO3Generation, coalescence, absorption, the primary condition of shedding law in flue gas.
Control condensation method is to be presently considered to measure power plant's low concentration SO3/H2SO4Most accurately method, is sampled using heat tracing Flue gas in rifle collection flue, utilize SO after the harvested by centrifugation condensation of serpentine condenser3Acid mist drop.Rushed using absorbing liquid Wash and have collected SO3Serpentine condenser, measure absorbent solution in SO4 2‐Concentration and the volume of sampling flue gas are so as to being calculated SO in flue gas3/H2SO4Concentration.The patent of invention of Patent No. 201310376879.5 is in flue gas SO3/H2SO4Measurement of concetration Further improved on the basis of national standard, introduce multiple bypasses, improve measurement accuracy；Patent No. 201510897275.4 Patent of invention, the heating-up temperature of flue gas heat tracing sampling gun is brought up to 300 DEG C, the sulfuric acid droplets in wet-method desulfurized fume are added Heat condenses into serpentine condenser collect afterwards, realize SO in wet-method desulfurized fume into sulfuric acid vapor3/H2SO4Concentration Measurement.But there is SO for above two patent3Condense collection process and SO4 2‐Concentration Testing process can not be carried out, every time simultaneously Measurement be both needed to dismount condensing unit, can not continuous multi-point sampling the problems such as, SO can not be realized3/H2SO4The continuous of concentration moves in real time State detects.
The content of the invention
In order to solve existing SO3And H2SO4The deficiency of sampling detector for multifunctional, it is an object of the invention to provide one kind to rotate Seal the SO of multichannel3And H2SO4Sampling detector for multifunctional and method, make SO3And H2Process and SO are collected in SO condensation4 2‐Concentration is surveyed Amount process is carried out simultaneously；Multigroup SO is set3And H2SO condensation collection units, sample detecting continuously can be carried out to multiple spot；Using portable SO in formula ion chromatograph measurement solution4 2‐Concentration, measurement accuracy are higher；Equipment instrument is small, is convenient for carrying.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional, including：
Smoke collecting unit, for gathering flue gas；SO3/H2SO4Condensation collection unit, 6 groups or more than 6 groups, by snakelike cold Solidifying pipe and twoport flask composition, is placed on rotating circular disk, is sealed in tube, for by the SO in flue gas3/H2SO4Steam is cold Congeal into sulfuric acid droplets to separate with gas phase, set twoport flask to collect condensate liquid below serpentine condenser；Flue gas flow control is single Member, the control of the flue gas flow rate of sampling detector for multifunctional and the measurement of flue gas total flow are flowed through for sampling period；Condensate liquid rinses Constant volume unit, from syringe pump to SO3/H2SO4The pure water of given volume is injected in condensation collection unit as absorbing liquid, by sulfuric acid Drop is collected into twoport flask；Liquid phase detection unit, detect the SO in absorbing liquid after constant volume4 2‐Concentration；Calculation control unit, For controlling the rotation of bottom rotating circular disk, the opening and closing of valve and the docking of pipeline, SO in flue gas is calculated3/H2SO4Concentration is simultaneously deposited Store up inputoutput data.
The smoke collecting unit includes heat tracing sampling gun and Guartz filter, and preferred embodiment is as follows：Heat tracing sampling gun is opened Mouth is in oblique 45 ° with horizontal direction, and opening direction sets quartzy filter core, filter out bulky grain thing back to flue gas direction of flow, muzzle；Companion Hot sampling gun inner tube winds electrical heating wire and thermocouple from quartz outside quartz ampoule, outer layer uses thermal insulation material cladding, and heat tracing takes Temperature maintains more than 200 DEG C in sample rifle；Heat tracing sampling gun afterbody sets Guartz filter, and the fly ash granule in flue gas is carried out Secondary filter.
The SO3And H2SO4Condensation collection unit, preferred embodiment are as follows:Totally 6 groups or more than 6 groups of condensation collection unit, often Group SO3And H2SO4Condensation collection unit includes a serpentine condenser and a twoport flask, from quartz material；SO3With H2SO4Condensation collection unit is evenly arranged on the rotating circular disk of bottom around Pivot axle, is rotated every time with bottom rotating circular disk Fixed angle, cylindrical wall remains stationary；Serpentine condenser is cooled down using constant temperature working medium (such as air), thermoelectricity is arranged on cylindrical wall Even summation working medium is imported and exported, and temperature is at 65 DEG C in maintenance cylinder；Flue gas to be measured and absorption pure water enter from two through holes of round barrel cover, Round barrel cover does not rotate, and coordinates SO3And H2SO4The rotation of condensation collection unit moves up and down.
To ensure the connection of the rotatory sealing of condensation collection unit and pipeline, further preferably, the bottom rotating circular disk Fitted seal is good between round barrel cover and cylindrical wall；Round barrel cover is provided with two through holes, is respectively connected to heat tracing sampling gun outlet Road and syringe pump export pipeline, remaining serpentine condenser mouth of pipe corresponding position set sealed groove, and depth of groove is disc thickness Half；It is fixedly connected outside cylindrical wall with liquid phase detection unit and flue gas flow control unit, inside is taken over using rotary extension, It is connected with twoport flask outlet long tube.
The SO3And H2SO4Condensation collection unit is cooled down using constant temperature gaseous working medium (such as air), it is ensured that the SO in flue gas3 And H2SO4Fully condensation；The detection cooling Temperature of Working of many places thermocouple 6 is arranged on cylindrical wall, constant temperature working medium is set outside cylinder Controller 7, maintain the stabilization of Temperature of Working.
The flue gas flow control unit includes gas flowmeter, air pump and drying device, and preferred embodiment is as follows:In flow Drying device is set before meter and aspiration pump, for absorbing the drop in flue gas, prevents the pump housing, flowmeter corrosion；Flowmeter is defeated Go out signal to calculation control unit.
The condensate liquid rinses constant volume unit, and preferred embodiment is as follows：Absorption working medium is pure water, is sprayed using syringe pump, often Secondary injection control pure water given volume；Pure water flows through serpentine condenser and absorbs dissolving sulfuric acid droplets, enters twoport flask from short tube； Magnetic stirring bar is set in twoport flask, the solution being collected into is well mixed.
The liquid phase detection unit, preferred embodiment are as follows：SO in solution is detected using portable ion chromatograph4 2‐It is dense Degree, absorbing liquid is taken out by the long tube of twoport flask, testing result is exported to calculation control unit.
The calculation control unit, preferred embodiment are as follows：Central processing unit built in calculation control unit use, shell has defeated Enter equipment and display screen, the temperature of display smoke collecting unit and condensation collection unit everywhere, flue gas flow, SO4 2‐Concentration, and With memory storage function, the SO in every group of serpentine condenser sampling period flue gas is calculated3And H2SO4Concentration；Control bottom rotation The anglec of rotation of disk, the flue gas sampling time of every group of serpentine condenser, the up and down motion of round barrel cover and the rotation of cylindrical wall are stretched Flexible, the stabilization of the injection of syringe pump and everywhere temperature of bushing.
Described SO3And H2SO4The sample detecting method of sampling detector for multifunctional, it is characterised in that：By multigroup serpentine condenser 4 and twoport flask 5 be uniformly fixed on bottom rotating circular disk 8 around the centre rotational axis of bottom rotating circular disk 8, install cylinder and cylinder additional Lid realizes pipeline connection and sealing；Negative pressure is produced using air pump 11, flue gas is extracted from flue by heat tracing sampling gun 1；Flue gas In SO3And H2SO4Sulfuric acid droplets are condensed into after the serpentine condenser 4 cooled down by constant temperature gaseous working medium, are adhered to snakelike cold On solidifying tube wall；After one group of serpentine condenser completes sampling, rotate to SO4 2‐Measurement of concetration pipeline, syringe pump 13 spray necessarily The pure water of volume rinses serpentine condenser 4 as absorbing liquid, absorbing liquid is stored in twoport flask 5, absorbing liquid passes through magnetic force After stirring rod is well mixed, portable ion chromatograph 14 extracts absorbing liquid by solution pump and detects SO4 2‐Concentration；When one group of snake Shape condenser pipe leaves SO3And H2SO4After sample lines, next group of serpentine condenser accesses SO again3And H2SO4Sample lines, it is real The SO in flue gas is showed3And H2SO4Multigroup uninterrupted measurement of concentration；The absorption pure water that syringe pump 13 sprays every time is given body Product, the SO in the solution measurement absorbing liquid in twoport flask 5 is extracted by portable ion chromatograph 144 2‐After concentration, in conjunction with Flue gas volume in the sampling time that gas flowmeter 12 measures, you can calculate the SO in flue gas3And H2SO4Concentration, calculation formula It is as follows：
cInhaleIt is the SO in absorbing liquid4 2‐Concentration, mg/L；VInhaleIt is the volume of absorbing liquid, L；T is the sampling time of every group of sample, s；V is the flue gas volume flow velocity measured at flowmeter 12, L/min；T is the temperature at flowmeter 12, DEG C；cSO3It is cigarette under mark condition SO in gas3And H2SO4Concentration, mg/m3。
Compared to the prior art compared with innovative point, advantage and good effect of the present invention are：
1st, the SO of rotatory sealing multichannel of the invention3And H2SO4Sampling detector for multifunctional utilizes the mode of rotating multiple channel, Multigroup SO is set3And H2SO4Condensation collection unit, it is sequentially ingressed into SO3And H2SO4Sample lines and SO4 2‐Measurement of concetration pipeline, makes SO3And H2SO4Control condensation sampling process and SO4 2‐Concentration Testing process is carried out simultaneously, realizes SO3And H2SO4The reality of concentration When multigroup uninterrupted detection.
2nd, the SO of rotatory sealing multichannel of the invention3And H2SO4Sampling detector for multifunctional, sprayed using syringe pump quantitative pure Sulfuric acid droplets after water absorption condensation, measure SO in absorbing liquid4 2‐SO in flue gas can be calculated in concentration3And H2SO4It is dense Degree.
3rd, the SO of rotatory sealing multichannel of the invention3And H2SO4It is the heat tracing sampling gun inner tube of sampling detector for multifunctional, snakelike Condenser pipe, twoport flask, flue gas pipeline are quartz material, are farthest reduced because pipeline is to SO3And H2SO4Suction Error caused by adduction, improves measurement accuracy.
4th, the SO of rotatory sealing multichannel of the invention3And H2SO4Sampling detector for multifunctional is using constant temperature gaseous working medium (such as sky Gas) cooling medium is used as, the weight of detection means is alleviated, improves portability.
5th, the SO of rotatory sealing multichannel of the invention3And H2SO4Sampling detector for multifunctional is examined using portable ion chromatograph The SO in absorbing liquid after measure appearance4 2‐Concentration.Ion chromatograph carries infusion pump, can extract solution automatically from twoport flask. Ion chromatograph accuracy of detection is high, up to μ g/L ranks, it is possible to achieve on-line automatic continuous detection.
6th, the SO of rotatory sealing multichannel of the invention3And H2SO4Sampling detector for multifunctional realizes rotatory sealing, in use The round barrel cover of lower movement and the expansion joint connecting line of cylinder inner wall, quartzy equipment junction use frosted sealing joint.
7th, the SO of rotatory sealing multichannel of the invention3And H2SO4Magnetic stirring bar is double built in sampling detector for multifunctional use Mouth flask collects absorbent solution, makes the SO in solution4 2‐Distribution is more uniform, improves measurement accuracy.
Brief description of the drawings
Fig. 1 is a kind of SO of rotatory sealing multichannel of the present invention3/H2SO4Sampling detector for multifunctional system diagram.
Fig. 2 is rotatory sealing multichannel barrel device profile in apparatus of the present invention.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of as shown in figure 1, SO of rotatory sealing multichannel of the present invention3/H2SO4Sampling detector for multifunctional, device are taken by heat tracing Sample rifle 1, Guartz filter 2, round barrel cover 3, serpentine condenser 4, twoport flask 5, thermocouple 6, constant temperature working medium controller 7, bottom Rotating circular disk 8, rotary extension adapter 9, drying device 10, air pump 11, gas flowmeter 12, syringe pump 13, portable ion color Spectrometer 14, calculation control unit 15 etc. form；System composition form is as follows：Worked by air pump 11 and produce negative pressure from boiler flue Flue gas is extracted, flue gas temperature after heat tracing sampling gun 1 maintains more than 200 DEG C, and into Guartz filter 2, flue dust is carried out Filtering, carry out SO into serpentine condenser 4 and twoport flask 5 afterwards3/H2SO4Control condensation, subsequent flue gas passes through drier Discharged after 10 by air pump 11.After one group of serpentine condenser 4 gathers, bottom rotating circular disk 8 rotates, round barrel cover 3 and rotation The routing motion of expansion joint 9, next group of serpentine condenser 4 is connected to SO3/H2SO4Sample lines.Sulfuric acid droplets are condensed Serpentine condenser 4 is connected to SO4 2‐Measurement of concetration pipeline, the absorbing pure water sulfuric acid droplets that syringe pump 13 sprays into certain volume enter Twoport flask 5, portable ion chromatograph 14 extract solution by solution pump and detect SO4 2‐Concentration.
As shown in Fig. 26 groups or more than 6 groups of serpentine condenser 4 and twoport flask 5 are placed in cylinder, can continuous sampling survey Measure the sample of 6 groups or more than 6 groups.All data summarizations are to calculation control unit 15, display operation parameter on a display screen With SO in the flue gas that is calculated3/H2SO4Concentration.
Heat tracing sampling gun 1 uses double-decker, and inner tube is quartz ampoule, winds electrical heating wire and thermocouple outside quartz ampoule, outside Layer be insulation material, by thermocouple and electrical heating wire by temperature control more than 200 DEG C, prevent sulfuric acid vapor in pipe in line On condensation adsorption.
Guartz filter 2 is arranged on the afterbody of heat tracing sampling gun 1, sets electrical heating wire and thermocouple, control temperature is at 200 DEG C More than.
Round barrel cover 3 chooses polytetrafluoroethylene (PTFE) or stainless steel, and two through holes, remaining serpentine condenser are set on round barrel cover Mouth of pipe corresponding position sets sealed groove, and depth of groove is the half of disc thickness.When condensation collection unit rotates, round barrel cover to Upper motion；After rotational positioning, round barrel cover is pushed, and round barrel cover lower surface groove is bonded with the serpentine condenser mouth of pipe.Flue gas pipeline Pass through with pure water pipeline is absorbed from round barrel cover through hole, the serpentine condenser 4 under remaining off working state is sealed by round barrel cover.
Mounting bracket fixes the top and bottom of serpentine condenser 4 in the rotary shaft of bottom rotating circular disk 8.
Flask is twoport quartz flask 5, and short tube enters, and long tube goes out, and the lower end of serpentine condenser 4 is connected with short tube.Flask long tube Exit sets rotary extension adapter 9 to be connected with flask long tube away from cylinder wall 2cm on cylinder wall.Work as condensation collection unit Rotary extension adapter is withdrawn during rotation, and after rotational positioning, the elongation of rotary extension adapter 9 is tightly connected with the frosted of flask outlet.
SO3/H2SO4Control condensation regulated and controled using 65 DEG C of constant temperature working medium by external constant temperature working medium controller 7, in cylinder Many places thermocouple 6 is set on wall, the temperature of working medium is cooled down in monitoring cylinder.Perforate is for working medium disengaging on cylindrical wall.
Drying device 10 is arranged on before air pump 11, is absorbed drop in flue gas, is mitigated the corruption to air pump 11 and flowmeter 12 Erosion.Real-time traffic data transfer to calculation control unit 15 is obtained the flue gas that sampling period flows through condensing unit by flowmeter 12 Volume.
The outlet of syringe pump 13 is connected to the top of round barrel cover 3, and the injection volume of syringe pump, injection time are by calculation control unit 15 Regulation and control.
Portable ion chromatograph 14 is connected by rotary extension adapter 9 with the outlet of twoport flask 5, portable ion color Spectrometer carries solution pump, and absorbing liquid is extracted from twoport flask 5, by detection data transfer to calculation control unit 15.
Calculation control unit 15 controls the motion of each part and receives storage temperature, flow, concentration data, calculates every group of snake SO corresponding to shape condenser pipe3/H2SO4Concentration.Calculation control unit includes central processing unit, display screen and input and set It is standby.
After all serpentine condensers 4 are using one time, serpentine condenser is changed, avoids the drop in serpentine condenser from remaining Cause measurement error.
The operation principle of the present invention：Multigroup serpentine condenser 4 and twoport flask 5 are revolved around the center of bottom rotating circular disk 8 Rotating shaft is uniformly fixed on bottom rotating circular disk 8, installs cylinder additional and cover realizes pipeline connection and sealing.Produced using air pump 11 Negative pressure, flue gas is extracted from flue by heat tracing sampling gun 1.SO in flue gas3And H2SO4Passing through 65 DEG C of constant temperature gaseous working mediums Sulfuric acid droplets are condensed into after the serpentine condenser 4 of cooling, are adhered on serpentine condenser tube wall.When one group of serpentine condenser is completed After sampling, rotate to SO4 2‐Measurement of concetration pipeline, the pure water that syringe pump 13 sprays certain volume are snakelike cold as absorbing liquid flushing Solidifying pipe 4, absorbing liquid is stored in twoport flask 5, and absorbing liquid is after magnetic stirring bar is well mixed, portable chromatography of ions Instrument 14 extracts absorbing liquid by solution pump and detects SO4 2‐Concentration；When one group of serpentine condenser leaves SO3And H2SO4After sample lines, Next group of serpentine condenser accesses SO again3And H2SO4Sample lines, realize the SO in flue gas3And H2SO4Concentration it is multigroup not Discontinuous measurement.The absorption pure water that syringe pump 13 sprays every time is given volume, and twoport is extracted by portable ion chromatograph 14 The SO in solution measurement absorbing liquid in flask 54 2‐After concentration, flue gas in sampling time for being measured in conjunction with gas flowmeter 12 Volume, you can calculate the SO in flue gas3And H2SO4Concentration, calculation formula are as follows：
cInhaleIt is the SO in absorbing liquid4 2‐Concentration, mg/L；VInhaleIt is the volume of absorbing liquid, L；T is the sampling time of every group of sample, s；V is the flue gas volume flow velocity measured at flowmeter 12, L/min；T is the temperature at flowmeter 12, DEG C；cSO3It is cigarette under mark condition SO in gas3And H2SO4Concentration, mg/m3。

Claims (10)

  1. A kind of 1. SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional, it is characterised in that：Including：Smoke collecting unit, For gathering flue gas；SO3And H2SO4Condensation collection unit, 6 groups or more than 6 groups, it is made up of, puts serpentine condenser and twoport flask In on the rotating circular disk of bottom, tube is sealed in, for by the SO in flue gas3And H2SO4Steam is condensed into sulfuric acid droplets and gas It is separated, sets twoport flask to collect condensate liquid below serpentine condenser；Flue gas flow control unit, for controlling and detecting Sampling period flows through every group of SO3And H2SO4The flue gas flow of condensation collection unit；Condensate liquid rinse constant volume unit, from syringe pump to SO3And H2SO4The pure water of given volume is injected in condensation collection unit as absorbing liquid, sulfuric acid droplets are collected into twoport flask In；Liquid phase detection unit, detect the SO in absorbing liquid after constant volume4 2-Concentration；Calculation control unit, for controlling bottom rotational circle The rotation of disk, the opening and closing of valve and the docking of pipeline, calculate SO in flue gas3And H2SO4Concentration simultaneously stores inputoutput data.
  2. 2. SO according to claim 13And H2SO4Sampling detector for multifunctional, it is characterised in that：The smoke collecting unit includes Heat tracing sampling gun (1) and Guartz filter (2), heat tracing sampling gun (1) opening with horizontal direction be in oblique 45 °, opening direction back to Flue gas direction of flow, muzzle sets quartzy filter core, for filtering the fly ash granule in flue gas；Heat tracing sampling gun (1) inner tube is stone English material, winds electrical heating wire and thermocouple outside quartz inner pipe, and outer layer uses thermal insulation material cladding；Heat tracing sampling gun (1) heat tracing Temperature maintains more than 200 DEG C；Heat tracing sampling gun (1) afterbody is provided with Guartz filter (2), and the fly ash granule in flue gas is carried out Secondary filter.
  3. 3. SO according to claim 13And H2SO4Sampling detector for multifunctional, it is characterised in that：The SO3And H2SO4Condensation is collected Totally 6 groups or more than 6 groups of unit, each SO3And H2SO4Condensation collection unit includes a serpentine condenser (4) and a twoport burns Bottle (5), chooses quartz material；Twoport flask (5) short tube enters, and long tube goes out；SO3And H2SO4Condensation collection unit is revolved around center Rotating shaft is evenly arranged on bottom rotating circular disk (8), rotates fixed angle every time with bottom rotating circular disk (8), cylindrical wall is kept It is static；Flue gas to be measured and flushing pure water enter from two through holes of round barrel cover (3), and round barrel cover (3) does not rotate, and coordinates SO3With H2SO4The rotation of condensation collection unit moves up and down.
  4. 4. SO according to claim 33And H2SO4Sampling detector for multifunctional, it is characterised in that：The SO3And H2SO4Condensation is collected Bottom rotating circular disk (8) and round barrel cover (3) fitted seal between cylindrical wall are good in unit；Round barrel cover is provided with two through holes, Heat tracing sampling gun (1) export pipeline and syringe pump (13) export pipeline are respectively connected to, remaining serpentine condenser mouth of pipe corresponding position is set Sealed groove is put, depth of groove is the half of disc thickness；It is single with liquid phase detection unit and flue gas flow control outside cylindrical wall Member is fixedly connected, and inside is connected using rotary extension adapter (9) with twoport flask (5) outlet long tube.
  5. 5. according to 1 and 3 SO of claim3And H2SO4Sampling detector for multifunctional, it is characterised in that：The SO3And H2SO4Condensation Collector unit is cooled down using constant temperature gaseous working medium, it is ensured that the SO in flue gas3And H2SO4Fully condensation；Many places are arranged on cylindrical wall Thermocouple (6) detection cooling Temperature of Working, constant temperature working medium controller (7) is set outside cylinder, maintains the stabilization of Temperature of Working.
  6. 6. SO according to claim 13And H2SO4Sampling detector for multifunctional, it is characterised in that：The flue gas flow control unit Including gas flowmeter (12), air pump (11) and drying device (10), drying is set before gas flowmeter (12) and air pump (11) Device (10), the drier in drying device (10) are used to absorb the drop in flue gas, prevent the pump housing, flowmeter corrosion；Gas Flowmeter (12) outputs signal to calculation control unit (15).
  7. 7. SO according to claim 13And H2SO4Sampling detector for multifunctional, it is characterised in that：The condensate liquid rinses constant volume list Member uses pure water to be sprayed as absorbing liquid using syringe pump (13), per injection control pure water given volume；Pure water flows through snakelike Condenser pipe (4) absorbs dissolving sulfuric acid droplets, enters twoport flask (5) from short tube；Magnetic agitation is set in the twoport flask (5) Rod, the absorbing liquid of collection is stirred.
  8. 8. SO according to claim 13And H2SO4Sampling detector for multifunctional, it is characterised in that：The liquid phase detection unit uses SO in portable ion chromatograph (14) detection absorbing liquid4 2-Concentration, absorbing liquid is extracted by the long tube of twoport flask (5), will Testing result is exported to calculation control unit (15).
  9. 9. SO according to claim 13And H2SO4Sampling detector for multifunctional, it is characterised in that：The calculation control unit (15) Using built-in central processing unit, shell has input equipment and display screen；Show smoke collecting unit and SO3And H2SO4Condensation is collected The temperature of unit everywhere, flue gas flow, SO4 2-Concentration, there is memory storage function, calculate every group of serpentine condenser sampling period SO in flue gas3And H2SO4Concentration；The anglec of rotation of bottom rotating circular disk is controlled, during the flue gas sampling of every group of serpentine condenser Between, the rotary extension adapter of the up and down motion of round barrel cover and cylindrical wall it is flexible, the injection of syringe pump and everywhere temperature it is steady It is fixed.
  10. 10. the SO described in any one of claim 1 to 93And H2SO4The sample detecting method of sampling detector for multifunctional, its feature exist In：Multigroup serpentine condenser (4) and twoport flask (5) are uniformly fixed on bottom around bottom rotating circular disk (8) centre rotational axis On portion's rotating circular disk (8), install cylinder additional and cover realizes pipeline connection and sealing；Negative pressure is produced using air pump (11), passes through companion Hot sampling gun (1) extracts flue gas from flue；SO in flue gas3And H2SO4In the snakelike condensation by the cooling of constant temperature gaseous working medium Sulfuric acid droplets are condensed into after pipe (4), are adhered on serpentine condenser tube wall；After one group of serpentine condenser completes sampling, rotation To SO4 2-Measurement of concetration pipeline, the pure water of syringe pump (13) injection certain volume rinse serpentine condenser (4) as absorbing liquid, will Absorbing liquid is stored in twoport flask (5), and absorbing liquid is after magnetic stirring bar is well mixed, portable ion chromatograph (14) Absorbing liquid is extracted by solution pump and detects SO4 2-Concentration；When one group of serpentine condenser leaves SO3And H2SO4It is next after sample lines Group serpentine condenser accesses SO again3And H2SO4Sample lines, realize the SO in flue gas3And H2SO4Concentration it is multigroup uninterrupted Measurement；The absorption pure water that syringe pump (13) sprays every time is given volume, and twoport is extracted by portable ion chromatograph (14) The SO in solution measurement absorbing liquid in flask (5)4 2-After concentration, in sampling time for being measured in conjunction with gas flowmeter (12) Flue gas volume, i.e., it can calculate the SO in flue gas3And H2SO4Concentration, calculation formula are as follows：
    cInhaleIt is the SO in absorbing liquid4 2-Concentration, mg/L；VInhaleIt is the volume of absorbing liquid, L；T is the sampling time of every group of sample, s；v It is the flue gas volume flow velocity measured at flowmeter 12, L/min；T is the temperature at flowmeter 12, DEG C；It is to mark under condition in flue gas SO3And H2SO4Concentration, mg/m3。
CN201711250934.0A 2017-12-01 2017-12-01 The SO of rotatory sealing multichannel3And H2SO4Sampling detector for multifunctional and method Pending CN107843464A (en)

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CN108426749A (en) * 2018-06-08 2018-08-21 滁州卷烟材料厂 A kind of efficient cigarette smoke sampler
CN109085101A (en) * 2018-10-25 2018-12-25 浙江三尼科技有限公司 A kind of flue gas soluble matter continuously monitors analysis method and system on-line
CN109254124A (en) * 2018-10-31 2019-01-22 华能国际电力股份有限公司 A kind of SO3Concentration on-line measuring device and method
CN109738487A (en) * 2019-02-22 2019-05-10 西安西热锅炉环保工程有限公司 SO in a kind of flue gas3On-line measurement system and method
CN110243638A (en) * 2019-05-17 2019-09-17 华电电力科学研究院有限公司 A kind of smoke collecting apparatus and method for SCR denitration device
CN110954377A (en) * 2019-12-03 2020-04-03 华电电力科学研究院有限公司 SO in flue gas based on condensation separation3Detection device and method
CN111257040A (en) * 2020-02-27 2020-06-09 河北省地矿局第八地质大队(河北省海洋地质资源调查中心) Shallow sampler
CN111487094A (en) * 2020-05-25 2020-08-04 中煤科工集团重庆研究院有限公司 SO in the exhaust gas3Detection preprocessing system and using method thereof
CN113654853A (en) * 2021-08-31 2021-11-16 中国矿业大学 SO suitable for high-humidity flue gas3Partitioned classified sampling device and sampling method
CN113720949A (en) * 2021-08-12 2021-11-30 重庆万标检测技术有限公司 A preceding processing apparatus for appraising chafing dish grease quality
CN113804515A (en) * 2021-09-13 2021-12-17 浙江天地环保科技股份有限公司 Chimney exhaust port SO of coal-fired power plant3Continuous sampling device and method
CN114396984A (en) * 2022-01-19 2022-04-26 成都秦川物联网科技股份有限公司 Step-by-step operation type energy metering device with built-in gateway and Internet of things system
CN114768291A (en) * 2022-03-01 2022-07-22 大唐国际发电股份有限公司张家口发电厂 SO3 quick sampling device in flue gas

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CN108426749A (en) * 2018-06-08 2018-08-21 滁州卷烟材料厂 A kind of efficient cigarette smoke sampler
CN109085101A (en) * 2018-10-25 2018-12-25 浙江三尼科技有限公司 A kind of flue gas soluble matter continuously monitors analysis method and system on-line
CN109085101B (en) * 2018-10-25 2024-03-22 浙江三尼科技有限公司 Continuous online monitoring and analyzing method and system for smoke solubles
CN109254124A (en) * 2018-10-31 2019-01-22 华能国际电力股份有限公司 A kind of SO3Concentration on-line measuring device and method
CN109738487A (en) * 2019-02-22 2019-05-10 西安西热锅炉环保工程有限公司 SO in a kind of flue gas3On-line measurement system and method
CN110243638A (en) * 2019-05-17 2019-09-17 华电电力科学研究院有限公司 A kind of smoke collecting apparatus and method for SCR denitration device
CN110954377A (en) * 2019-12-03 2020-04-03 华电电力科学研究院有限公司 SO in flue gas based on condensation separation3Detection device and method
CN111257040A (en) * 2020-02-27 2020-06-09 河北省地矿局第八地质大队(河北省海洋地质资源调查中心) Shallow sampler
CN111257040B (en) * 2020-02-27 2022-04-22 河北省地矿局第八地质大队(河北省海洋地质资源调查中心) Shallow sampler
CN111487094A (en) * 2020-05-25 2020-08-04 中煤科工集团重庆研究院有限公司 SO in the exhaust gas3Detection preprocessing system and using method thereof
CN113720949B (en) * 2021-08-12 2022-04-29 重庆万标检测技术有限公司 A preceding processing apparatus for appraising chafing dish grease quality
CN113720949A (en) * 2021-08-12 2021-11-30 重庆万标检测技术有限公司 A preceding processing apparatus for appraising chafing dish grease quality
CN113654853A (en) * 2021-08-31 2021-11-16 中国矿业大学 SO suitable for high-humidity flue gas3Partitioned classified sampling device and sampling method
CN113804515A (en) * 2021-09-13 2021-12-17 浙江天地环保科技股份有限公司 Chimney exhaust port SO of coal-fired power plant3Continuous sampling device and method
CN114396984A (en) * 2022-01-19 2022-04-26 成都秦川物联网科技股份有限公司 Step-by-step operation type energy metering device with built-in gateway and Internet of things system
CN114768291A (en) * 2022-03-01 2022-07-22 大唐国际发电股份有限公司张家口发电厂 SO3 quick sampling device in flue gas

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