CN109596471A - A kind of atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration - Google Patents
A kind of atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration Download PDFInfo
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- CN109596471A CN109596471A CN201811598587.5A CN201811598587A CN109596471A CN 109596471 A CN109596471 A CN 109596471A CN 201811598587 A CN201811598587 A CN 201811598587A CN 109596471 A CN109596471 A CN 109596471A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
- G01N15/0618—Investigating concentration of particle suspensions by collecting particles on a support of the filter type
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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
Abstract
The present invention relates to a kind of atmospheric aerosol smog systems of measurable particulate water soluble zwitterion concentration, including being sequentially connected aerosol cloud case, the particulate water soluble ion concentration measurement device of the burner, simulated atmosphere pollutant emission of the simulation biomass open burning connect into atmosphere；The atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration of the invention is provided simultaneously with three functions, the process of accurate, true simulation biomass open burning discharge atmosphere pollution；It is artificial controllably and repeatably to simulate atmosphere pollution produced by agricultural crop straw open burning in the physical-chemical reaction of troposphere or even each height of stratosphere, while excluding the influence of the factors such as meteorology complicated in actual environment, landform；And it can accurately obtain the concentration that the biomass combustion in simulated environment generates water-soluble zwitterion in particulate matter.
Description
Technical field
The present invention relates to a kind of atmospheric aerosol smog systems of measurable particulate water soluble zwitterion concentration.
Background technique
China is used as worldwide large agricultural country, and agricultural crop straw owning amount occupies first place in the world, according to statistics, about
20% or more agricultural crop straw is by direct open burning.Atmospheric aerosol caused by agricultural crop straw open burning is to environment
Deterioration (formation of such as haze) and visibility reduction play an important role, and can participate in propagation in atmosphere and chemical process, special
Different optical property and chemical component affects ground surface irradiation balance and oxidizing capacity, and can be effectively as cloud condensation nucl
Direct or indirect affects weather and solution-air circulation；Furthermore atmospheric aerosol caused by agricultural crop straw open burning has
Significant incoming call toxicity, potential threat is also played to population health.
However, being difficult to the physics of atmosphere pollution caused by capturing agricultural crop straw open burning in real atmosphere environment
Chemical process discharges the regional environment influence of atmosphere pollution, gas to further appreciate that and studying agricultural crop straw open burning
The problem for waiting effect and resident's physical and mental health needs to discharge atmosphere pollution by the method that laboratory experiment is simulated to study it
Caused environment effect and climatic effect.
Smog box is a kind of applied to the essential photochemical reaction simulation for carrying out atmosphere environmental chemistry analog study
Device can not only exclude the influence of the factors such as meteorology complicated in actual environment, landform, can also be artificial controllable and repeatable
Under conditions of simulated atmosphere chemical process, refine Atmospheric Chemistry reacting quintessence, obtain the mechanism mechanism of reaction, and verify atmospheric
Mode, research achievement can also provide scientific basis for the formulation of prevention and control of air pollution countermeasure.
The research origin of external smog box is in the 1970s, Univ North Carolina-Chapel Hill USA in 1976 establishes outdoor
Smog box, to collect data evaluation chemical reaction mechanism.The research of domestic smog box is started late, and Peking University builds in nineteen eighty-two
At domestic earliest indoor smog case；China Environmental Science Research Institute builds up the indoor smog case of quartz material nineteen ninety-five；Tsing-Hua University
University builds up relatively large outdoor smog box experimental system for 2005.However, special for the big of simulation biomass open burning
Gas aerosol cloud case system even lacks at home.The atmosphere that Various Complex can be generated during biomass open burning is dirty
Object is contaminated, is diffused at the top of troposphere wherein a large amount of small-molecular-weight pollutant can rise with the vertical convection campaign of air, and with
Atmospheric circulation participates in the atmosphere pollution transmission process in global range.It is big to be generated during simulation biomass open burning
The reaction and transmission process of gas pollutant need to provide low temperature, and low pressure continues the environment of high light radiation, and existing atmosphere gas is molten
Glue smog box is because the limitation of its material and structure (most of to use FEP-Teflon film) can not achieve, in addition, existing big
Gas aerosol cloud case is also unable to measure measurement particulate water soluble zwitterion concentration.
For preferably disclose environment effect caused by agricultural crop straw open burning source emission atmosphere pollution and
Climatic effect, so relevant policies further are formulated for country, and scientific support is provided, reach mitigation and controls the mesh of atmosphere pollution
, need a kind of atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of atmosphere of measurable particulate water soluble zwitterion concentration
Aerosol cloud system.
The present invention is achieved by the following scheme:
A kind of atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration, including be sequentially connected and connect
Simulation biomass open burning aerosol cloud case into atmosphere of burner, simulated atmosphere pollutant emission, water-soluble
Property particulate matter ion concentration measurement device；
The burner of the simulation biomass open burning includes at least: burning furnace shell is used for sealing combustion furnace
The bell of shell, and the tonifying Qi transfer tube being connected to combustion furnace enclosure interior are communicated with gas delivery tube on bell；
Aerosol cloud case of the simulated atmosphere pollutant emission into atmosphere includes at least: closed cabinet, position
Blender in bottom in cabinet, the vacuum pump for vacuumizing to closed cabinet, the atmosphere pollution through cabinet input
It manages, is provided with check valve on atmosphere pollution input pipe, to the humidifier of offer moisture in cabinet, and be located in the box body portion
Black light lamp, the cabinet include inner housing and outer housing, and the cavity between inner housing and outer housing is divided into refrigerant and follows
Circular layer and heat-barrier coating are provided with gas test mouth and gas supplementing opening through inner housing and outer housing；
Gas delivery tube on burner bell is connected to the atmosphere pollution input pipe of aerosol cloud case, aerosol
The gas test mouth of smog box is connected to by conductive rubber pipe with particulate water soluble ion concentration measurement device.
Preferred according to the present invention, the burning furnace shell is the structure of the other end open at one end sealing, bell setting
At combustion furnace shell nozzle end, bell is connect with combustion furnace housing seal, and gas delivery tube, gas are provided at the top of bell
Transfer tube is connected to combustion furnace enclosure interior, and burning web is horizontally arranged in burning furnace shell, and the setting of tonifying Qi transfer tube is being fired
The lower section of net is burnt, tonifying Qi transfer tube passes through burning furnace shell and extends to outside shell and connect with air supplying pump, in tonifying Qi transfer tube
It is provided with flow controller and particulate filter on pipeline, makes tonifying Qi flow control in 4-10L/min by flow controller,
Preferably, tonifying Qi flow velocity is 6-9L/min, the top of burning web is provided with testing tube, testing tube extends to outside shell and and cigarette
The connection of gas analyzer.
It is preferred according to the present invention, sealing ring is provided between combustion furnace shell nozzle end and bell, burn furnace shell
Open end is fixedly connected with bell by clips.
Preferred according to the present invention, burning furnace shell is cylindrical housings, and bell is inverted funnel shape, the top of inverted funnel shape
Spout of funnel is connect with gas delivery tube, and bell open end internal diameter matches with combustion furnace shell nozzle end internal diameter, on burning web
Transparent windows are provided on the shell in portion.
Preferred according to the present invention, combustion furnace body height is 800-1200mm, interior diameter 700-800mm, bell
Inner sidewall is coated with Teflon anti-stick coating, and the height of bell is 100-200mm, and bell bottom open end internal diameter is 700-
800mm。
Preferred according to the present invention, the inner sidewall of gas delivery tube is coated with Teflon anti-stick coating, gas delivery tube
Interior diameter is 20-40mm.
Preferred according to the present invention, burning web is round asbestos burning web, and the periphery of burning web is provided with rigid fixed frame,
The other end of rigid fixed frame is fixed on the inner sidewall of burning furnace shell.
It is preferred according to the present invention, in the bottom of burning web, electric ignition device, electric ignition device and burning furnace shell are set
Ignitor switch electrical connection outside side wall, electric ignition device are close to burning sieve bottom.
Preferred according to the present invention, the flue gas analyzer is moral figure testo350pro flue gas analyzer, particulate matter mistake
Filter is highly effective air particulate matter (HEPA) filter.
Preferred according to the present invention, the inner sidewall of tonifying Qi transfer tube is coated with Teflon anti-stick coating, tonifying Qi transfer tube
Interior diameter is 10-30mm.
Preferred according to the present invention, bottom is provided with collection tray in burning furnace shell.
Preferred according to the present invention, the tonifying Qi transmission tube end in burning furnace shell is provided with nozzle, nozzle and combustion
The center for burning net is opposite, and the distance between nozzle and burning web are 10-15cm.
Simulate the burner of biomass open burning, the distance between nozzle and burning web, tonifying Qi flow velocity, combustible substance
Selection, combustible substance amount, the dehydration of combustible substance experience, the precipitation of volatile matter and burning (appearance of open fire), fire can be made
Yin after flame extinguishing burns and (burns on the surface of coke) and ashes form the equal stages, and burning time is long, temperature height, with reality scene
Under open burning process be consistent, make combustible substance indoors in the case of real simulation open burning process, fire its open fire
It burns, avoids stewing combustion, avoid burning insufficient, it is true, accurate to simulate the actual conditions of open burning, it can true and accurate simulation
The whole process of open biomass combustion.
Preferred according to the present invention, the cabinet is cylinder, and cylindrical both ends are respectively the arc of outwardly convex,
Cabinet internal upper part is provided with temperature monitoring probe and humidity detection probe, temperature monitoring probe and the outer temperature indicator electricity of cabinet
Connection, humidity detection probe are electrically connected with the outer wetness display unit of cabinet, and middle part is arranged in cabinet in black light lamp parallel interval, each
Black light lamp is electrically connected with the black light lamp switch outside cabinet, and optical inductor, optical inductor and the outer light of cabinet are additionally provided in cabinet
Ratemeter electrical connection.
It is preferred according to the present invention, it is provided with cleaning mouth in cabinet middle part of sliding channel through inner housing and outer housing, cleans
Sealing cover is provided on mouthful, sealing cover is connect by sealing flange with cleaning mouth, is realized sealing cover and is cleaned the sealed connection of mouth.
Preferred according to the present invention, the external blowdown pipe of gas supplementing opening, blowdown pipe is connect with gas pump, and stream is provided on blowdown pipe
Amount controller and particulate filter are additionally provided with waste gas outlet through inner housing and outer housing in lower box.
Preferred according to the present invention, refrigerant circulation layer is connect with the circulation line outside cabinet, is arranged on circulation line
There is circulating pump.
Preferred according to the present invention, bottom is provided with smog box support frame, the motor outside blender and cabinet outside the enclosure
The outer housing of electrical connection, the rotation of motor driven blender, smog box is Stainless Steel Shell, and inner housing is Stainless Steel Shell, inner casing
The Teflon anti-stick coating of 0.3mm is coated on the inner wall of body, the volume of smog box is 4-8m3。
It is strong that aerosol cloud case can really and accurately simulate the temperature of real atmosphere environmental background, humidity, air pressure, illumination
Degree, into aerosol cloud case atmosphere pollution in aerosol cloud case, repeatably simulate biomass open burning institute
Atmosphere pollution is generated in the physical-chemical reaction of troposphere or even each height of stratosphere, while being excluded complicated in actual environment
The factors such as meteorology, landform influence.
Preferred according to the present invention, the particulate water soluble ion concentration measurement device is Thermo URG-9000D
Ion chromatograph is provided with check valve on conductive rubber pipe.
Thermo URG-9000D ion chromatograph is the prior art, commercially available equipment.
A kind of atmospheric aerosol smog systematic difference method of above-mentioned measurable particulate water soluble zwitterion concentration,
It comprises the following steps that
1) the clean biomass of 5-15g is weighed, drying is placed on the burning web of burner and spreads out, and opens tonifying Qi
Pump inputs the air without particulate matter to furnace shell is burnt by tonifying Qi transfer tube, opens flue gas analyzer, observes spectrogram and record
CO、CO2Initial concentration, put biomass-burning, CO and CO provided by flue gas analyzer in real time during biomass combustion2's
Concentration value simultaneously calculates efficiency of combustion, adjusts tonifying Qi flow velocity by air supplying pump and guarantees that the efficiency of combustion of biomass is more than or equal to 0.9；
2) it is vacuumized by cabinet of the vacuum pump to aerosol cloud case, pressure in aerosol cloud case is made to reach 8-
12Pa closes vacuum pump, the check valve on atmosphere pollution input pipe is opened, by falling after the atmosphere pollution above burner
The mode of suction enters the atmospheric aerosol smog box of vacuum by gas delivery tube, check valve is closed after 4-6min, according to simulation
Atmosphere pollution in troposphere or even stratosphere actual environment background, adjust smog the temperature inside the box, humidity, intensity of illumination, lead to
Pressure in gas supplementing opening tonifying Qi adjusting tank body is crossed, turn on agitator stirring keeps internal mix uniform, after parameter stability, unlatching is led
Check valve on electric rubber tube can be obtained by Thermo URG-9000D ion chromatograph on-line continuous measurement in analog loop
Biomass combustion generates the concentration of water-soluble zwitterion in particulate matter in border.
By taking mid latitudes as an example, mid latitudes atmosphere convection layer height is 10-12km, the environment temperature in troposphere
Under normal circumstances with the every raising 100m of height, 0.6 DEG C is reduced.It is 17 DEG C of calculating, mid latitudes pair with sea level environment temperature
Environment temperature at the top of fluid layer is about -55 DEG C.In the present invention, atmospheric aerosol smog box inside and outside wall is all made of stainless steel material,
The extreme environment of tolerable low-temp low-pressure, and the humidity control apparatus in smog box can make relative humidity from 0.5% to
100%.
Atmospheric aerosol smog system of the invention is provided simultaneously with following three functions: first is that passing through real-time monitoring crops
Straw burning efficiency-adjusted air compensation, guarantees the prolonged open fire burning of straw sample, and more preferable simulation agricultural crop straw is outdoor
Combustion process；Second is that by the parameters such as temperature, humidity, air pressure, intensity of illumination for adjusting smog box, artificially controllably and repeatably
It is anti-in the physical chemistry of troposphere or even each height of stratosphere to simulate atmosphere pollution produced by agricultural crop straw open burning
It answers, while excluding the influence of the factors such as meteorology complicated in actual environment, landform；Third is that using the production of Thermo company
Thermo URG-9000D ion chromatograph detects the zwitterion of particulate matter and gas component simultaneously, obtains in simulated environment
Biomass combustion generates the concentration of water-soluble zwitterion in particulate matter.
System of the invention is preferably to disclose area caused by agricultural crop straw open burning source emission atmosphere pollution
Domain environmental effect and climatic effect play the role of crucial foundation.
The beneficial effects of the present invention are:
1, the atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration of the invention is provided simultaneously with
Three functions, the process of accurate, true simulation biomass open burning discharge atmosphere pollution；Artificially controllably and repeatably
It is anti-in the physical chemistry of troposphere or even each height of stratosphere to simulate atmosphere pollution produced by agricultural crop straw open burning
It answers, while excluding the influence of the factors such as meteorology complicated in actual environment, landform；And it can accurately obtain raw in simulated environment
Substance combustion generates the concentration of water-soluble zwitterion in particulate matter.
2, the smog box of the atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration of the invention
Inner wall have 0.3mmTeflon anti-stick coating, to reduce the deposition of gaseous substance decaying on the reactor wall and particulate matter simultaneously
Inhibit the corrosion and catalytic action of wall metal material；Big (the 5.29875m of smog box volume simultaneously3), surface-to-volume is than small, back
Scape influence it is small, thus can for evaluate agricultural crop straw open burning discharge atmosphere pollution chemical reaction mechanism provide precision compared with
High data.
3, the Thermo of the atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration of the invention
URG-9000D ion chromatograph is minimized particle loss using crosslinking Teflon material aluminum pipe as sampling pipe, and
High degree of automation, simple and convenient operation and maintenance are simply provided and automatic on-line monitoring can be realized, and detect particulate matter and gas simultaneously
The zwitterion of component greatly improves sensitivity using suppression technology, can detect the component of extremely low concentration, and particulate matter is gentle
Body is all made of the input mode of zwitterion shunting, avoids cross contamination, as a result accurately.
4, the atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration of the invention is individually designed
Cleaning mouth, enter interior simple cleaning after experiment for experimenter, can avoid the cross influence between experiment, and package unit
Maintenance is simple, durable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that can measure the atmospheric aerosol smog system of particulate water soluble zwitterion concentration；
In figure, 1 be clips, 2 be transparent windows, 3 be electric ignition device, 4 be electric ignitor switch, 5 be burning ashes
Collection tray, 6 be gas delivery tube, 7 be bell, 8 be sealing ring, 9 be moral figure testo350pro flue gas analyzer, 10 be stone
Cotton burning web, 11 be rigid fixed frame, 12 be tonifying Qi transfer tube, 13 be flow controller, 14 be high-efficiency particulate filter
(HEPA), 15 be air supplying pump, 16 be burning furnace shell,
17 check valves, 18 temperature indicators, 19 humidifiers, 20 wetness display units, 21 inner housings, 22 refrigerant circulation layers,
23 heat-barrier coatings, 24 gas test mouths, 25 gas supplementing openings, 26 waste gas outlets, 27 refrigerant circulation lines, the support of 28 smog boxes
Frame, 29 magnetic stirring apparatus, 30 vacuum pumps, 31 sealing covers, 32 sealing flanges, 33 black light lamps, 34 cleaning mouths, 35 outer housings；
36 conductive rubber pipes, 37Thermo URG-9000D ion chromatograph.
Specific embodiment
Below with reference to Fig. 1 and embodiment, the present invention is further described, however, the present invention is not limited thereto.
Efficiency of combustion formula: η=[CO2 straw burnings]/([CO2 straw burnings]+[COStraw burning])
Embodiment 1:
A kind of atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration, structure as shown in Figure 1,
It is molten including being sequentially connected the gas of the burner, simulated atmosphere pollutant emission of the simulation biomass open burning connect into atmosphere
Glue smog box, particulate water soluble ion concentration measurement device；
The burner of simulation biomass open burning includes the burning furnace shell 16 of other end sealing open at one end, burning
Furnace shell is cylindrical housings, and burn a height of 1000mm of furnace shell, interior diameter 750mm, is set at combustion furnace shell nozzle end
It is equipped with bell 7, sealing ring 8 is provided between combustion furnace shell nozzle end and bell, combustion furnace shell nozzle end and bell are logical
It crosses clips 1 to be fixedly connected, bell is inverted funnel shape, and the top funnel mouth of inverted funnel shape is connect with gas delivery tube 6, and gas passes
Defeated pipe 6 is communicated with combustion furnace enclosure interior.The inner sidewall of bell is coated with Teflon anti-stick coating, and the height of bell 7 is
150mm, bell bottom open end internal diameter position 750mm, bell bottom open end internal diameter and combustion furnace shell nozzle end internal diameter phase
Match, the inner sidewall of gas delivery tube 6 is coated with Teflon anti-stick coating, and the interior diameter of gas delivery tube is 30mm.
Burning web 10 is horizontally arranged in burning furnace shell, burning web is round asbestos burning web, the periphery of burning web
It is provided with rigid fixed frame 11, the other end of rigid fixed frame is fixed on the inner sidewall of burning furnace shell.Under burning web
Portion is provided with tonifying Qi transfer tube 12, and tonifying Qi transfer tube 12 is extended to outside shell through burning furnace shell and connect with air supplying pump 15,
Flow controller 13 and high-efficiency particulate filter (HEPA) 14 are provided on the pipeline of tonifying Qi transfer tube 12, in burning web
Top is provided with testing tube, and testing tube is extended to outside shell and connect with moral figure testo350pro flue gas analyzer 9.It is burning
Transparent windows 2 are provided on the shell in online portion.
Electric ignition device 3 is set in the bottom of burning web, electric ignition device 3 is opened with the electricity sparking outside combustion furnace housing sidewall
Close 4 electrical connections.The inner sidewall of tonifying Qi transfer tube 12 is coated with Teflon anti-stick coating, and the interior diameter of tonifying Qi transfer tube is 10-
30mm.Bottom is provided with burning ashes collection tray 5 in burning furnace shell, and pipe end is transmitted in the tonifying Qi in burning furnace shell
Portion is provided with nozzle, and nozzle is opposite with the center of burning web, and the distance between nozzle and burning web are 15cm.
Aerosol cloud case of the simulated atmosphere pollutant emission into atmosphere includes: closed cabinet, and cabinet is
Cylinder, cylindrical both ends are respectively the arc of outwardly convex, and cabinet internal upper part is provided with temperature monitoring probe and humidity
Monitoring probe, temperature monitoring probe are electrically connected with the outer temperature indicator 18 of cabinet, humidity detection probe and the outer humidity display of cabinet
Device 20 is electrically connected, and cabinet internal upper part is additionally provided with humidifier 19, to providing moisture in cabinet.
Bottom is provided with blender 29 in cabinet, and blender is electrically connected with the motor outside cabinet, and motor driven blender turns
It is dynamic, vacuum pump 30 is provided with outside cabinet, vacuum pump connection vacuum tube simultaneously vacuumizes cabinet, and cabinet is provided with atmosphere pollution
Object input pipe is provided with check valve 17 on atmosphere pollution input pipe, and box house is provided with multiple black light lamps 33.Black light lamp is flat
Middle part is arranged in cabinet in row interval, and each black light lamp is electrically connected with the black light lamp switch outside cabinet, is additionally provided in cabinet
Optical inductor, optical inductor are electrically connected with the outer luminous intensity measurement instrument of cabinet.
The cabinet includes inner housing 21 and outer housing 35, and the cavity between inner housing and outer housing is divided into refrigeration
Agent circulation layer 22 and heat-barrier coating 23 are provided with gas test mouth 24, gas supplementing opening 25 and exhaust gas through inner housing and outer housing
Outlet 26；It is provided with cleaning mouth 34 in cabinet middle part of sliding channel through inner housing and outer housing, cleans and is provided with sealing cover on mouth
31, sealing cover is connect by sealing flange 33 with cleaning mouth, and seals cleaning mouth.The external blowdown pipe of gas supplementing opening, blowdown pipe and gas
Body pump connects, and is provided with flow controller 13 and particulate filter 14 on blowdown pipe.Outside refrigerant circulation layer 22 and cabinet
Circulation line 27 connects, and circulating pump is provided on circulation line.Bottom is provided with smog box support frame 28, motor outside the enclosure
Blender rotation is driven, the outer housing of smog box is Stainless Steel Shell, and inner housing is Stainless Steel Shell, is applied on the inner wall of inner housing
It is covered with the Teflon anti-stick coating of 0.3mm, the volume of smog box is 4-8m3。
Gas delivery tube on burner bell is connected to the atmosphere pollution input pipe of aerosol cloud case, aerosol
The gas test mouth of smog box is connected to by conductive rubber pipe with Thermo URG-9000D ion chromatograph 37, conductive rubber pipe
On be provided with check valve.
Embodiment 2:
The application method of embodiment 1, comprises the following steps that
1) the clean biomass of 10g is weighed, drying is placed on the burning web of burner and spreads out, air supplying pump is opened,
By tonifying Qi transfer tube to burn furnace shell input the air without particulate matter, open flue gas analyzer, observe spectrogram and record CO,
CO2Initial concentration, put biomass-burning, CO and CO provided by flue gas analyzer in real time during biomass combustion2Concentration
It is worth and calculates efficiency of combustion, tonifying Qi flow velocity is adjusted by air supplying pump and guarantees that the efficiency of combustion of biomass is more than or equal to 0.9；
2) it is vacuumized by cabinet of the vacuum pump to aerosol cloud case, pressure in aerosol cloud case is made to reach 8-
12Pa closes vacuum pump, the check valve on atmosphere pollution input pipe is opened, by falling after the atmosphere pollution above burner
The mode of suction enters the atmospheric aerosol smog box of vacuum by gas delivery tube, check valve is closed after 4-6min, according to simulation
Atmosphere pollution in troposphere or even stratosphere actual environment background, adjust smog the temperature inside the box, humidity, intensity of illumination, lead to
Pressure in gas supplementing opening tonifying Qi adjusting tank body is crossed, turn on agitator stirring keeps internal mix uniform, after parameter stability, unlatching is led
Check valve on electric rubber tube can be obtained by Thermo URG-9000D ion chromatograph on-line continuous measurement in analog loop
Biomass combustion generates the concentration of water-soluble zwitterion in particulate matter in border.
Practical application example:
1. the preparation stage: the flue gas analyzer for simulating the burner of biomass open burning being connected zero pass filter, is adjusted
It is whole continue 2 minutes to " zeroing mode " after complete zeroing, starting air supplying pump to burner purge 6min；By flue gas analyzer tune
It is correctly connect with the testing tube of burner again after zero,
Before the use, aerosol cloud case need to close check valve, gas test mouth, gas supplementing opening, waste gas outlet, will clean
Mouth is covered tightly with sealing cover, and is tightened with sealing flange, guarantees air-tightness, opens vacuum pump 1 hour, tank body is vacuumized, and is opened
Refrigerant-cycle systems, by the refrigerant circulation layer of refrigerant (liquefied ammonia) injection smog box, according to the practical convection current of required simulation
Layer height by temperature monitoring probe set pot temperature (more than sea level with the every raising 100m of height, temperature reduces by 0.6 DEG C,
It is 17 DEG C of calculating with sea level environment temperature)；
2. working stage: being set after drying in oven 24 hours with balance precise 10.00g clean water rice straw
It is uniformly spread out at the round asbestos burning web of burner, device is sealed, guarantee the air-tightness of burner apparatus, and by gas
Body transfer tube is connected with the atmosphere pollution input pipe of aerosol cloud case；Air supplying pump is opened, it is empty to adjust flow controller control
Gas velocity is 9L/min, and air removes the particulate matter in air by high-efficiency particulate filter (HEPA), and transmits through tonifying Qi
The air of no particulate matter is passed through in combustion furnace furnace body by pipe；Moral figure testo350pro flue gas analyzer is opened, " CO, CO are adjusted to2
Measure and record data pattern ", observe spectrogram and CO, CO2Initial concentration；Rice straw sample is lighted using electric ignition device
Product, observe rice straw combustion case by transparent windows, start timing after 15 seconds and record data, pass through moral figure
CO, CO that testo350pro flue gas analyzer provides in real time2Concentration calculation agricultural crop straw efficiency of combustion, according to real-time
Agricultural crop straw efficiency of combustion adjusts mass flowmenter, adjusts charge flow rate when agricultural crop straw efficiency of combustion is less than 0.9, makes
Agricultural crop straw completely burned guarantees efficiency of combustion 0.9 or more；Agricultural crop straw sample combustion is observed by transparent windows
After, close air pump；
Check valve is slowly opened, the atmosphere pollution of agricultural crop straw sample combustion is made to enter gas by gas delivery tube suck-back
In the cabinet of colloidal sol smog box, check valve is closed after five minutes, according to required humidity, is opened humidifier humidifies and is passed through humidity
Monitoring probe controls humidity；According to required pressure, air pump tonifying Qi is opened, mass flowmenter is adjusted and controls air velocity, it is empty
Gas removes the particulate matter in air by high-efficiency particulate filter (HEPA), and is done clean air gas supplementing opening and be passed through smog box tank
In body；It opens black light lamp and the light radiation intensity of black light lamp is adjusted according to the uitraviolet intensity of required simulation；Open magnetic agitation
Device 1 hour, keep internal mix uniform by the flabellum uniform stirring of magnetic stirring apparatus；Gas test mouth is passed through into conductive rubber pipe
After being connect with Thermo URG-9000D ion chromatograph, slowly open gas test mouth, by Thermo URG-9000D from
Sub- chromatograph on-line continuous measurement can be obtained the biomass combustion in simulated environment and generate water-soluble zwitterion in particulate matter
Concentration；
3. wash phase: simulation agricultural crop straw open burning to be done generates the sampling and measurement work of atmosphere pollution
Afterwards, gas test mouth is first closed, the refrigerant circulation layer of refrigerant extraction fog chamber is made into tank body by refrigerant-cycle systems
It returns and warms to room temperature；Gas pump tonifying Qi is opened, makes tank body pressure recovery to normal pressure, then open outlet port, by air pump by tank
Then sealing cover is opened in intracorporal exhaust gas discharge, experimenter can enter smog box tank body by cleaning mouth, and use 50vol.%
Aqueous alcohol cleans inner wall, finally blasts into tank and does clean air and wait for testing use next time；Combustion furnace bell is opened, stone is taken out
Cotton burning web and burning ashes collection tray, clear up agricultural crop straw sample combustion ashes, and clear with 50vol.% aqueous alcohol
It washes, to test use next time after drying.
Experimental example: the system of embodiment 1 measures combustion aerosol and once discharges PM2.5 chemical component
Using the device of embodiment 1, the method for reference embodiment 2 is respectively to rice, wheat, corn and soybean, cotton stalk
Simulation open burning, discharge, flow of air supply 9L/min are carried out, and tests particulate water soluble yin-yang example ion concentration, is surveyed
The concentration for obtaining water-soluble zwitterion in 5 kinds of biological matter straw burning aerosols, is shown in Table 1.
15 kinds of biological matter straw burning aerosols of table once discharge PM2.5 chemical component
From table 1 it follows that rice, wheat, corn and soybean, the particulate matter difference of cotton stalk open burning discharge
Containing 10 kinds of zwitterions, and component content is different, is environment effect caused by atmosphere pollution and weather effect
Advantageous data should be provided.
Claims (10)
1. a kind of atmospheric aerosol smog system of measurable particulate water soluble zwitterion concentration, connect including being sequentially connected
Simulate aerosol cloud case into atmosphere of burner, simulated atmosphere pollutant emission, the water solubility of biomass open burning
Particulate matter ion concentration measurement device；
The burner of the simulation biomass open burning includes at least: burning furnace shell is used for sealing combustion furnace shell
Bell, and the tonifying Qi transfer tube being connected to combustion furnace enclosure interior is communicated with gas delivery tube on bell；
Aerosol cloud case of the simulated atmosphere pollutant emission into atmosphere includes at least: closed cabinet, is located at case
The blender of internal bottom, the vacuum pump for being vacuumized to closed cabinet, through the atmosphere pollution input pipe of cabinet, greatly
It is provided with check valve on gas pollutant input pipe, to the humidifier of offer moisture in cabinet, and is located in the box body the black light in portion
Lamp, the cabinet include inner housing and outer housing, and the cavity between inner housing and outer housing is divided into refrigerant circulation layer
And heat-barrier coating, inner housing and outer housing are provided with gas test mouth and gas supplementing opening；
Gas delivery tube on burner bell is connected to the atmosphere pollution input pipe of aerosol cloud case, aerosol cloud
The gas test mouth of case is connected to by conductive rubber pipe with particulate water soluble ion concentration measurement device.
2. atmospheric aerosol smog system according to claim 1, which is characterized in that the burning furnace shell is one end
The structure that the other end that is open seals, bell are arranged at combustion furnace shell nozzle end, and bell is connect with combustion furnace housing seal, furnace
Gas delivery tube is provided at the top of lid, gas delivery tube is connected to combustion furnace enclosure interior, is laterally set in burning furnace shell
It is equipped with burning web, the lower section of burning web is arranged in tonifying Qi transfer tube, and tonifying Qi transfer tube passes through burning furnace shell and extends to outside shell
And connect with air supplying pump, it is provided with flow controller and particulate filter on the pipeline of tonifying Qi transfer tube, passes through flow control
Device processed makes tonifying Qi flow control in 4-10L/min, it is preferred that tonifying Qi flow velocity is 6-9L/min, is provided on the top of burning web
Testing tube, testing tube are extended to outside shell and are connect with flue gas analyzer.
3. atmospheric aerosol smog system according to claim 2, which is characterized in that in combustion furnace shell nozzle end and furnace
Sealing ring is provided between lid, combustion furnace shell nozzle end is fixedly connected with bell by clips, and burning furnace shell is cylinder
Shape shell, bell are inverted funnel shape, and the top funnel mouth of inverted funnel shape is connect with gas delivery tube, bell open end internal diameter and combustion
It burns furnace shell open end internal diameter to match, is provided with transparent windows on the shell on burning web top.
4. atmospheric aerosol smog system according to claim 2, which is characterized in that combustion furnace body height is 800-
1200mm, interior diameter 700-800mm, the inner sidewall of bell are coated with Teflon anti-stick coating, and the height of bell is 100-
200mm, bell bottom open end internal diameter are 700-800mm, and the inner sidewall of gas delivery tube is coated with Teflon anti-stick coating, gas
The interior diameter of body transfer tube is 20-40mm.
5. atmospheric aerosol smog system according to claim 2, which is characterized in that burning web is round asbestos burning
Net, the periphery of burning web are provided with rigid fixed frame, and the other end of rigid fixed frame is fixed on the inner sidewall of burning furnace shell,
Electric ignition device is set in the bottom of burning web, electric ignition device is electrically connected with the ignitor switch outside combustion furnace housing sidewall, electricity
Ignition device is close to burning sieve bottom, and the flue gas analyzer is moral figure testo350pro flue gas analyzer, particulate matter filtering
Device is highly effective air particulate matter (HEPA) filter, and the inner sidewall of tonifying Qi transfer tube is coated with Teflon anti-stick coating, and tonifying Qi passes
The interior diameter of defeated pipe is 10-30mm.
6. atmospheric aerosol smog system according to claim 2, which is characterized in that bottom is arranged in burning furnace shell
There is collection tray, the tonifying Qi transmission tube end in burning furnace shell is provided with nozzle, and nozzle is opposite with the center of burning web,
The distance between nozzle and burning web are 10-15cm.
7. atmospheric aerosol smog system according to claim 1, which is characterized in that the cabinet is cylinder, circle
Cylindrical both ends are respectively the arc of outwardly convex, and cabinet internal upper part is provided with temperature monitoring probe and humidity detection probe,
Temperature monitoring probe is electrically connected with the outer temperature indicator of cabinet, and humidity detection probe is electrically connected with the outer wetness display unit of cabinet, black
Middle part is arranged in cabinet in light lamp parallel interval, and each black light lamp is electrically connected with the black light lamp switch outside cabinet, in cabinet also
It is provided with optical inductor, optical inductor is electrically connected with the outer luminous intensity measurement instrument of cabinet.
8. atmospheric aerosol smog system according to claim 1, which is characterized in that through inner housing and outer housing in case
It is provided with cleaning mouth in body middle part of sliding channel, cleans and is provided with sealing cover on mouth, sealing cover is connect by sealing flange with cleaning mouth,
It realizes sealing cover and cleans the sealed connection of mouth, the external blowdown pipe of gas supplementing opening, blowdown pipe connect with gas pump, is arranged on blowdown pipe
There are flow controller and particulate filter, in lower box, is additionally provided with waste gas outlet through inner housing and outer housing.
9. atmospheric aerosol smog system according to claim 1, which is characterized in that outside refrigerant circulation layer and cabinet
Circulation line connection, is provided with circulating pump on circulation line, and bottom is provided with smog box support frame outside the enclosure, blender with
Motor electrical connection outside cabinet, the rotation of motor driven blender, the outer housing of smog box are Stainless Steel Shell, and inner housing is stainless
Steel sheel, the Teflon anti-stick coating of 0.3mm is coated on the inner wall of inner housing, and the volume of smog box is 4-8m3, the water
Soluble particles object ion concentration measurement device is Thermo URG-9000D ion chromatograph, is provided on conductive rubber pipe unidirectional
Valve.
10. a kind of atmospheric aerosol smog systematic difference method of measurable particulate water soluble zwitterion concentration, including
Steps are as follows:
1) the clean biomass of 5-15g is weighed, drying is placed on the burning web of burner and spreads out, and opens air supplying pump, leads to
Tonifying Qi transfer tube is crossed to air of the furnace shell input without particulate matter is burnt, flue gas analyzer is opened, observes spectrogram and record CO, CO2
Initial concentration, put biomass-burning, CO and CO provided by flue gas analyzer in real time during biomass combustion2Concentration value
And efficiency of combustion is calculated, tonifying Qi flow velocity is adjusted by air supplying pump and guarantees that the efficiency of combustion of biomass is more than or equal to 0.9；
2) it is vacuumized by cabinet of the vacuum pump to aerosol cloud case, pressure in aerosol cloud case is made to reach 8-12Pa, closed
Vacuum pump is closed, the check valve on atmosphere pollution input pipe is opened, passes through the side of suck-back after the atmosphere pollution above burner
Formula enters the atmospheric aerosol smog box of vacuum by gas delivery tube, check valve is closed after 4-6min, according to the atmosphere of simulation
Pollutant adjusts smog the temperature inside the box, humidity, intensity of illumination, passes through tonifying Qi in troposphere or even stratosphere actual environment background
Pressure in mouth tonifying Qi adjusting tank body, turn on agitator stirring, keeps internal mix uniform, after parameter stability, opens conductive rubber
Check valve on pipe can be obtained raw in simulated environment by Thermo URG-9000D ion chromatograph on-line continuous measurement
Substance combustion generates the concentration of water-soluble zwitterion in particulate matter.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112365789A (en) * | 2020-11-09 | 2021-02-12 | 中国科学院城市环境研究所 | Dynamic demonstration method and system for concentration and components of water-soluble ions of aerosol |
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