CN103308649A - Multi-channel multi-component stationary source sampling and analysis system - Google Patents
Multi-channel multi-component stationary source sampling and analysis system Download PDFInfo
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- CN103308649A CN103308649A CN2013100180940A CN201310018094A CN103308649A CN 103308649 A CN103308649 A CN 103308649A CN 2013100180940 A CN2013100180940 A CN 2013100180940A CN 201310018094 A CN201310018094 A CN 201310018094A CN 103308649 A CN103308649 A CN 103308649A
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Abstract
The invention discloses a multi-channel multi-component stationary source sampling and analysis system. A sampling gun is connected to a particulate cutting head; the particulate cutting head is connected with an MPS (Modified Polystyrene) dilution system; the MPS dilution system is connected with an air compressor; a pneumatic connector of the MPS dilution system is connected to gas inlets of two gas distributing pipes; a gas emptying port with a one-way valve is formed in the tail end of each gas distributing pipe; equivalent sampling ports are formed in a main body of each gas distributing pipe; the equivalent sampling ports are connected with a gas concentration sensor, a VOCs ((Volatile Organic Compounds) sampling stand, an on-line particulate detector and particulate double membrane sampling devices; flue gas is guided into a cutter behind the particulate cutting head by the flue gas sampling gun; particle components other than target particulates are removed and then enter the MPS dilution system through an MPS warm air guide hose; the diluted gas enters the gas distributing pipes and then is subjected to sampling or on-line analysis through the equivalent sampling ports; each sampling or analysis instrument is provided with a power system; and the redundant diluted gas is discharged to an atmosphere by the gas emptying ports.
Description
Technical field
The present invention relates to the instrument that pollutant emission is analyzed, particularly a kind of hyperchannel polycomponent stationary source sampling analysis system.
Background technology
Stationary source is one of important sources of atmosphere pollution, comprises gaseous state and particulate form multiple pollutant in the waste gas of its discharging.There is complicated interaction in the pollutant of discharge of pollutant sources, and has secondary reaction and conversion under certain condition, therefore utilizes the Single Pollution thing that the source emission feature is analyzed and has certain restriction.In order to explore the discharging rule of pollution source, and further deeply resolve the source emission feature, simultaneously the multiple pollutants such as gaseous state and particulate form are carried out sampling analysis very necessary.
The at present existing multiple instrument that can be used for the stationary source emission analysis.Flue gas analyzer in a period of time can only the complete independently flue dust or the test of flue gas, can not analyze flue dust and flue gas simultaneously.Waste gas is detected, can only export the mean concentration of 5 kinds of conventional pollutants in the certain hour, can't export the continuous detecting data by second.When flue dust is detected, can only record the flue dust mean concentration based on gravimetric method and flue gas flow.Stationary source smoke on-line monitoring system (CEM) can be realized the continuous on-line monitoring to oxides of nitrogen, oxysulfide and particle, but the smoke components of analyzing is less, and its time resolution is generally 1 minute, and more high-resolution data can't be provided.
Present stationary source monitoring analysis instrument mainly has the following disadvantages: but 1. the detection of contamination component is many not enough.2. can't realize VOCs etc. is easily caused the analysis of the discharging composition of secondary pollution.3. when adopting many testing tool couplings to enlarge the pollutant monitoring scope, because of the locus difference that relates to a plurality of air intake openings with the problem such as there are differences analysis time, can't obtain data to each instrument and comprehensively compare.4. can only obtain the data of concentration of emission for particle, can't resolve its physicochemical characteristics.5. the temporal resolution of obtaining data is high not enough, changes for the pollutant emission trend in the short period to be difficult to resolve.6. the smoke components in the flue is directly measured, after being difficult to reflect flue gas and air contacting, because secondary reaction causes actual discharge after pollutant emission changes.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of hyperchannel polycomponent stationary source sampling analysis system, can realize simultaneously various ingredients being pursued for same sampled point on-line analysis and the data recording of second, have the high characteristics of resolution.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of hyperchannel polycomponent stationary source sampling analysis system, comprise sampling gun 1, sampling gun 1 afterbody is threaded connection the inlet end of particle cutting head 2, the outlet side of particle cutting head 2 accompanies warm soft air-guide pipe 3 to be connected with the air intake opening of MPS dilution system 4 by MPS, MPS dilution system 4 provides diluent air by coupled air compressor 5, the gas outlet of MPS dilution system 4 is connected to the air intake opening of 2 gas-distributing pipes 6 by pneumatic joint, the end of each gas-distributing pipe 6 is provided with the gas evacuation port 7 with retaining valve, be provided with equivalent sampling mouth 8 on the main body of each gas-distributing pipe 6, one equivalent thief hatch 8 of one of them gas-distributing pipe 6 connects gas concentration sensor 9, other has two equivalent sampling mouths 8 to consist of one group and connection VOCs sampling stand 10, VOCs sampling stand 10 comprises the A oil-less pump 12-1 that is connected with an equivalent thief hatch 8 in the group, A oil-less pump 12-1 links to each other with Tedlar gas production bag 13, and another equivalent sampling mouth 8 links to each other with B oil-less pump 12-2 by DNPH adsorption tube 11 in the group;
One equivalent thief hatch 8 of another gas-distributing pipe 6 connects particle on-line detector 19, the modular construction that other equivalent sampling mouths 8 connect is identical, be that equivalent sampling mouth 8 connects particle duplicature sampling apparatus 14, particle duplicature sampling apparatus 14 lower part outlets connect exsiccator 15, exsiccator 15 outlet quality of connection flowmeter controllers 17, mass flowmeter controller 17 1 ends link to each other with mass flowmeter volume integrating instrument 16, and mass flowmeter controller 17 other ends link to each other with negative pressure sucking pump 18.
Described particle cutting head 2 flows are respectively 3L/min or 10L/min, and the cutting particle diameter is PM
2.5Or PM
10
This system has following advantage:
1) can to gaseous state and solid-state typical pollutant be sampled and detect online.
2) with VOCs sampling stand 10, can sample to VOCs component in the flue gas.
3) this system can realize simultaneously various ingredients being pursued for same sampled point on-line analysis and the data recording of second.
4) resolution is high, can more accurately reflect the variation tendency of source emission.
5) process that can the simulating pollution thing contacts with air, the data of obtaining are more close to the emission result under the actual environment.
Description of drawings
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done and to be described in detail.
A kind of hyperchannel polycomponent stationary source sampling analysis system, comprise sampling gun 1, sampling gun 1 afterbody is threaded connection the inlet end of particle cutting head 2, the outlet side of particle cutting head 2 accompanies warm soft air-guide pipe 3 to be connected with the air intake opening of MPS dilution system 4 by MPS, MPS dilution system 4 provides diluent air by coupled air compressor 5, the gas outlet of MPS dilution system 4 is connected to the air intake opening of 2 gas-distributing pipes 6 by pneumatic joint, the end of each gas-distributing pipe 6 is provided with the gas evacuation port 7 with retaining valve, be provided with equivalent sampling mouth 8 on the main body of each gas-distributing pipe 6, one equivalent thief hatch 8 of one of them gas-distributing pipe 6 connects gas concentration sensor 9, other has two equivalent sampling mouths to consist of one group and connection VOCs sampling stand 10, VOCs sampling stand 10 comprises the A oil-less pump 12-1 that is connected with an equivalent thief hatch in the group, A oil-less pump 12-1 links to each other with Tedlar gas production bag 13, and another equivalent sampling mouth links to each other with B oil-less pump 12-2 by DNPH adsorption tube 11 in the group;
One equivalent thief hatch 8 of another gas-distributing pipe 6 connects particle on-line detector 19, the modular construction that other equivalent sampling mouths 8 connect is identical, be that equivalent sampling mouth 8 connects particle duplicature sampling apparatus 14, particle duplicature sampling apparatus 14 lower part outlets connect exsiccator 15, exsiccator 15 outlet quality of connection flowmeter controllers 17, mass flowmeter controller 17 1 ends link to each other with mass flowmeter volume integrating instrument 16, and mass flowmeter controller 17 other ends link to each other with negative pressure sucking pump 18.
The assembling of the present embodiment system and function:
Select applicable sampling gun 1: as cigarette Wen Bugao and when mainly studying gaseous contaminant, select polytetrafluoroethyllining lining sampling gun 1, reduce the sampling gun inwall to the decay of pollutant; When smoke moisture is larger, select heating sampling gun 1, reduce hydrogenesis to the decay of pollutant especially particle; When higher and particle diameter is larger when particle concentration, should select major diameter sampling gun 1, avoid bulky grain that sampling gun is stopped up.Sampling gun 1 is chosen rear particle cutting head 2 according to inlet flow rate and target particles thing selection applicable model, and flow is selected according to the dilution ratio that dilution unit arranges.Accompany warm soft air-guide pipe 3 to be connected on the MPS dilution system by MPS behind the particle cutting head 2.
The present embodiment is for fear of long degradation of pollutant and the skewness of causing of gas-distributing pipe, therefore adopt two gas-distributing pipe 6 parallel connections, gas-distributing pipe 6 is 5 passage gas-distributing pipes of 1 import, 4 outlets, consists of 8 equivalent sampling mouths 8, and each equivalent sampling mouth 8 connects respectively sampling and analyzing device.Each exit is rotary with cock, and pneumatic web member or the plug of different pore size arranged in the cock of plurality of specifications.Select the plug cock when not using.The pipeline end is the gas evacuation port 7 with one-way cock, is used for emptying residue diluents.Connecting line is selected the material that is suitable for the target contaminant sampling between gas-distributing pipe and analytical instrument: the particle sampling analysis of pipeline is the electrostatic prevention pipe, and gaseous contaminant sampling analysis pipeline adopts polyfluortetraethylene pipe.
In the present embodiment, equivalent sampling mouth 8 connects 2 particle duplicature sampling apparatuses 14, particle duplicature sampling apparatus 14 lower part outlets connect exsiccator 15, exsiccator 15 outlet quality of connection flowmeter controllers 17, mass flowmeter controller 17 1 ends link to each other with mass flowmeter volume integrating instrument 16, and mass flowmeter controller 17 other ends link to each other with negative pressure sucking pump 18.Under the effect of negative pressure sucking pump 18, air-flow is by the film sampling apparatus, and particle is trapped within on the Teflon film and quartz film of order setting, and mass flowmeter is used for calculating the gas flow by film.The gas sensor rear end that is connected in series is with air pump; VOCs sampling stand 10 comprises airbag sampling system and adsorption tube sampling system two parts, and the airbag sampling system is selected oil-less pump and the Tedlar gas production bag 13 of Gast company, is used for collecting non-methane hydro carbons, transfers in the Summa tank to be analyzed after the sampling; The adsorption tube sampling system comprises 1 KI silicone tube and the two-stage DNPH adsorption tube 11 that is connected in series, and the rear end provides power by Gast B oil-less pump 12-2.But pump provides power by the lithium battery of recharge, and continuous operating time reached more than 4 hours.
The principle of work of this system is: carry at MPS dilution system 4 under the acting force of the negative pressure that pump produces, flue gas imports in the cutter behind the particle cutting head 2 by gas sampling gun 1, after removing target particles thing grain fraction in addition, accompany warm soft air-guide pipe 3 to enter MPS dilution system 4 by MPS, gas after the dilution enters in the gas-distributing pipe 6, enter respectively gas concentration sensor 9 from a plurality of equivalent sampling mouths 8, DNPH adsorption tube 11, VOCs sampling stand 10, particle duplicature sampling apparatus 14 and particle on-line detector 19 are sampled or on-line analysis, and each sampling or analytical instrument be self-powered system all.Unnecessary diluents, the gas evacuation port 7 with retaining valve by gas-distributing pipe 6 ends is put in the air.
The present invention not only can realize the function of existing stationary source analytical instrument, can finish the sampling functions such as VOCs gas sampling that existing instrument can't finish, particle sampling simultaneously; In addition, this system increases dilution unit, the process that can the simulating pollution thing contacts with flue gas, and the data that realization is obtained are more close to the emission result under the actual environment, and native system also is reserved with the ability of further expansion analytical instrument or sampling apparatus.
Claims (2)
1. hyperchannel polycomponent stationary source sampling analysis system, it is characterized in that, comprise sampling gun (1), sampling gun (1) afterbody is threaded connection the inlet end of particle cutting head (2), the outlet side of particle cutting head (2) accompanies warm soft air-guide pipe (3) to be connected with the air intake opening of MPS dilution system (4) by MPS, MPS dilution system (4) provides diluent air by coupled air compressor (5), the gas outlet of MPS dilution system (4) is connected to the air intake opening of 2 gas-distributing pipes (6) by pneumatic joint, the end of each gas-distributing pipe (6) is provided with the gas evacuation port (7) with retaining valve, be provided with equivalent sampling mouth (8) on the main body of each gas-distributing pipe (6), the one equivalent thief hatch (8) of one of them gas-distributing pipe (6) connects gas concentration sensor (9), other has two equivalent sampling mouths to consist of one group and connection VOCs sampling stand (10), VOCs sampling stand (10) comprises the A oil-less pump (12-1) that is connected with an equivalent thief hatch (8) in the group, A oil-less pump (12-1) links to each other with Tedlar gas production bag (13), and another equivalent sampling mouth (8) links to each other with B oil-less pump (12-2) by DNPH adsorption tube (11) in the group; The one equivalent thief hatch (8) of another gas-distributing pipe (6) connects particle on-line detector (19), the modular construction that other equivalent sampling mouths (8) connect is identical, be that equivalent sampling mouth (8) connects particle duplicature sampling apparatus (14), particle duplicature sampling apparatus (14) lower part outlet connects exsiccator (15), exsiccator (15) outlet quality of connection flowmeter controller (17), mass flowmeter controller (17) one ends link to each other with mass flowmeter volume integrating instrument (16), and mass flowmeter controller (17) other end links to each other with negative pressure sucking pump (18).
2. analytic system according to claim 1 is characterized in that, particle cutting head (2) flow is respectively 3L/min or 10L/min, and the cutting particle diameter is PM
2.5Or PM
10
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104237465A (en) * | 2014-09-10 | 2014-12-24 | 青岛海纳光电环保有限公司 | Air pollutant source apportionment sampling system and air pollutant source apportionment sampling method |
| CN104833550A (en) * | 2015-05-20 | 2015-08-12 | 河南师范大学 | Flue gas analysis and collection system capable of distinguishing combustion state and operation method thereof |
| CN105158374A (en) * | 2015-09-26 | 2015-12-16 | 南京林业大学 | VOC detecting device in hot-pressing process of wooden composite plate |
| CN106525520A (en) * | 2015-09-15 | 2017-03-22 | 农业部规划设计研究院 | Stationary combustion source flue gas mixing channel dilution multistage sampling device |
| CN107255580A (en) * | 2017-04-26 | 2017-10-17 | 浙江菲达环保科技股份有限公司 | A kind of PM2.5 particles sampling apparatus |
| CN108106887A (en) * | 2017-12-28 | 2018-06-01 | 清华大学 | Motor-vehicle tail-gas particulate matter and volatile organic contaminant divided working status sampling system |
| CN109459337A (en) * | 2018-12-29 | 2019-03-12 | 阜阳师范学院 | VOCs ingredient on-line analysis and equipment in Atmospheric particulates |
| CN110057985A (en) * | 2019-05-29 | 2019-07-26 | 兰州易助科研设备科技有限公司 | A kind of high-altitude monitoring device |
| CN110208048A (en) * | 2019-05-31 | 2019-09-06 | 浙江大学 | The system and method that coal-fired flue-gas Some Organic Pollutants binary channels samples simultaneously |
| CN110208155A (en) * | 2019-05-08 | 2019-09-06 | 北京雪迪龙科技股份有限公司 | A kind of Atmospheric particulates unmanned plane monitoring system |
| CN112945650A (en) * | 2021-02-03 | 2021-06-11 | 西安交通大学 | Flue gas sampling device and sampling method |
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| CN104237465A (en) * | 2014-09-10 | 2014-12-24 | 青岛海纳光电环保有限公司 | Air pollutant source apportionment sampling system and air pollutant source apportionment sampling method |
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| CN106525520A (en) * | 2015-09-15 | 2017-03-22 | 农业部规划设计研究院 | Stationary combustion source flue gas mixing channel dilution multistage sampling device |
| CN105158374A (en) * | 2015-09-26 | 2015-12-16 | 南京林业大学 | VOC detecting device in hot-pressing process of wooden composite plate |
| CN107255580A (en) * | 2017-04-26 | 2017-10-17 | 浙江菲达环保科技股份有限公司 | A kind of PM2.5 particles sampling apparatus |
| CN108106887A (en) * | 2017-12-28 | 2018-06-01 | 清华大学 | Motor-vehicle tail-gas particulate matter and volatile organic contaminant divided working status sampling system |
| CN108106887B (en) * | 2017-12-28 | 2024-04-09 | 清华大学 | System for sampling particulate matters and volatile organic pollutants in tail gas of motor vehicle according to working conditions |
| CN109459337A (en) * | 2018-12-29 | 2019-03-12 | 阜阳师范学院 | VOCs ingredient on-line analysis and equipment in Atmospheric particulates |
| CN110208155A (en) * | 2019-05-08 | 2019-09-06 | 北京雪迪龙科技股份有限公司 | A kind of Atmospheric particulates unmanned plane monitoring system |
| CN110057985A (en) * | 2019-05-29 | 2019-07-26 | 兰州易助科研设备科技有限公司 | A kind of high-altitude monitoring device |
| CN110057985B (en) * | 2019-05-29 | 2024-04-26 | 兰州易助科研设备科技有限公司 | High altitude monitoring facilities |
| CN110208048A (en) * | 2019-05-31 | 2019-09-06 | 浙江大学 | The system and method that coal-fired flue-gas Some Organic Pollutants binary channels samples simultaneously |
| CN112945650A (en) * | 2021-02-03 | 2021-06-11 | 西安交通大学 | Flue gas sampling device and sampling method |
| CN112945650B (en) * | 2021-02-03 | 2022-12-27 | 西安交通大学 | Flue gas sampling device and sampling method |
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Application publication date: 20130918 |