CN107907388A - The device of micro dust and the method for detection grain diameter and content in a kind of collection gas - Google Patents
The device of micro dust and the method for detection grain diameter and content in a kind of collection gas Download PDFInfo
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- CN107907388A CN107907388A CN201711323037.8A CN201711323037A CN107907388A CN 107907388 A CN107907388 A CN 107907388A CN 201711323037 A CN201711323037 A CN 201711323037A CN 107907388 A CN107907388 A CN 107907388A
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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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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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
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
Abstract
The device of micro dust and the method for detection grain diameter and content in gas are collected the invention discloses a kind of.The device includes dust filter unit, triple valve, gas volume flow gauge, syringe, and wherein dust filter unit is connected with gas volume flow gauge and syringe respectively by triple valve.The invention also discloses a kind of collection and detect the method for micro dust particles particle diameter and content in sample gas.The present invention can be suitable for the situation that the sample gas scale of construction is less than 5mg/L less than 100mL and dustiness, it also can be suitably used for the situation that gas flow is more than or equal to 5mg/L more than or equal to 100mL and dustiness at the same time, solve the problem that micro dust detection is limited by sample size and dustiness in gas.
Description
Technical field
The invention belongs to gas hydrates to develop detection technique field, and in particular to one kind collects micro dust in gas
Device and detection grain diameter and content method.
Background technology
In nature, gas hydrates are stored in arenaceous sediment layer mostly, and the sand in deposit layer is mostly particulate
Sand and flour sand.Due to the particle diameter very little of fine grained sand and flour sand, it is very easy to during exploitation of gas hydrates with natural gas
Gush out, and can be flowed for a long time with the conveying of natural gas.The mistake of natural gas transporting and using these carrying dust particles
Cheng Zhong, gently can then reduce the service life of pipeline and correlation machine, heavy then can trigger security incident.Therefore in pipeline combustion gas dust-laden
The detection of situation, i.e. grain diameter and dustiness is extremely important.And then the practical activities such as dust-proof, dedirt could be instructed.
Dust collection for gas pipeline and detection at present, are required for greatly a set of extremely complex system, need at the same time
Tolerance it is also bigger (be 5mg/L by dustiness, it usually needs tolerance is more than 100L, could be obtained by the dust for the 0.5g that weighs
Go out dustiness).In gas hydrates pre-production phase, due to the reason such as tolerance, flow velocity be unstable, it is impossible to which these are applied to combustion
The method of feed channel on-line monitoring is indiscriminately imitated, this just needs to propose a kind of new solution.The present invention develops a kind of receipts
Collect the device of micro dust and the method for detection grain diameter and content in gas so that sampling is simple and convenient, can be suitable for
Small gas sample amount (being less than 100mL) and the situation of micro- dustiness (being less than 5mg/L), at the same also can be suitably used for big gas sample amount (be more than etc.
In 100mL) and dustiness larger (being more than or equal to 5mg/L) situation, solve in gas the detection of micro dust by sample size and
The problem of dustiness limitation.
The content of the invention
In order to overcome the above problem existing for existing e measurement technology means, the present invention provides micro powder in a kind of collection gas
The device and the method for detection grain diameter and content of dirt.The device volume is small, low cost, simple to operate, can be applicable in
In the sample gas scale of construction less than the situation of 100mL and dustiness less than 5mg/L, while it also can be suitably used for gas flow and be more than or equal to
100mL and dustiness are more than or equal to the situation of 5mg/L, solve micro dust detection in gas and are limited by sample size and dustiness
The problem of system.
The side of micro dust particles particle diameter and content in simultaneously detection gas is collected it is a further object of the present invention to provide a kind of
Method.
The purpose of the present invention is realized at least through one of following technical solution.
The device of micro dust in a kind of collection gas, including dust filter unit, triple valve, gas volume flow gauge and note
Emitter；
The dust filter unit is connected with gas volume flow gauge and syringe respectively by triple valve；
The gas volume flow gauge can be used for sample gas flow detection and cumulative volume to add up, and be shown in liquid crystal display
Screen, also soap bubble flowmeter can be used to be corrected；
The dust filter unit can install two kinds of filter membranes, Vinylidene Chloride filter membrane and acetate fiber filter membrane respectively, be applicable in respectively
In situation of the dust total amount less than 0.5mg and more than or equal to 0.5mg；
The syringe is used to backwash the dust particles that filter membrane captures in dust filter unit, to carry out next step behaviour
Make.
It is a kind of to collect the method for micro dust particles particle diameter and content in simultaneously detection gas, comprise the following steps：
The selection and installation of step 1, dust filter unit filter membrane：When dust total amount is less than 0.5mg in sample gas, dust mistake
Filter filter membrane selects Vinylidene Chloride filter membrane；When dust total amount is more than or equal to 0.5mg in sample gas, dust filter unit filter membrane is selected
Acetate fiber filter membrane, and the m1 that weighs；Filter membrane loading dust filter unit is chosen according to sample and its one end is connected with triple valve.
Step 2, dust capture：The airbag of gas sample will be filled with the other end of dust filter unit to be connected, swivel tee valve, even
Logical dust filter unit and gas volume flow gauge, extrude airbag, make gas as far as possible at a slow speed, at the uniform velocity by gas volume flow gauge,
Total tolerance Vg is write down, pulls down airbag.
Step 3, dust transfer and processing：When dust filter unit filter membrane selects Vinylidene Chloride filter membrane, dust will be captured
Vinylidene Chloride filter membrane, which is placed in the butyl acetate of 1~2mL, to be dissolved, and is finally uniformly applied to suspension on sheet glass, application area
For S；When dust filter unit filter membrane selects acetate fiber filter membrane, capture dust finishes the m2 that weighs, swivel tee valve, and connection, which contains, goes
The syringe and dust filter unit of ionized water, backwash dust filter unit, the dust of capture are poured beaker and adds 0.5mol/
[the NaPO of L3]6, stand 10h.
Step 4, dust size and total amount detection：The dust being applied on sheet glass is seen with the microscope for amplifying 400 times
Dust particles size is surveyed, and counts total amount, observation area is Si, and observation frequency is n (n>0.001×S/Si)；Soaked in beaker
The dust of bubble is transferred in laser particle analyzer, carries out grain diameter measurement.
Step 5, result calculate：When dust total amount is less than 0.5mg in sample gas, collect the dust of n observation statistics
Grain size, makes dust particles grading curve, calculates the Dust Capacity of n observation, last divided by (n × Si/S), is sample
Dust total amount in product gas；When dust total amount is more than or equal to 0.5mg in sample gas, dust total amount is m2-m1 in sample gas, dust
Grain diameter is the result measured by laser particle analyzer.
Compared with prior art, the advantage of the invention is that：
1st, the method for sampling is simple, flexible；
2nd, gas sample amount small (being less than 100mL), dustiness few (being less than 5mg/L) and gas sample amount can be suitable at the same time (to be more than greatly
Equal to 100mL), the situation of dustiness larger (being more than or equal to 5mg/L)；
Brief description of the drawings
Fig. 1 is the schematic device that the present invention collects micro dust in gas；
Fig. 2 is the dust particles smear observed under microscope (400 times of amplification)；
Fig. 3 observes statistical chart (6 times) for dust particles smear particle diameter；
Fig. 4 measures dust particles grain size distribution for laser particle analyzer.
All parts are as follows in figure：
Gas volume flow gauge E1, dust filter unit E2, syringe E3, triple valve V1.
Embodiment
Make further specific detailed description, but embodiments of the present invention are not to the present invention with reference to specific embodiment
It is limited to this, for especially not dated technological parameter, can refer to routine techniques progress.
The device of micro dust in a kind of collection gas, including dust filter unit, triple valve, gas volume flow gauge and note
Emitter；
The dust filter unit is connected with gas volume flow gauge and syringe respectively by triple valve；The gas volume
Flowmeter can be used for sample gas flow detection and cumulative volume to add up, and be shown in liquid crystal display, and soap bubble flow also can be used
Meter is corrected；The dust filter unit can install two kinds of filter membranes, Vinylidene Chloride filter membrane and acetate fiber filter membrane respectively, fit respectively
For situation of the dust total amount less than 0.5mg and more than or equal to 0.5mg；The syringe is used to backwash filter in dust filter unit
The dust particles of film capture, to carry out next step operation.
Embodiment 1
Step 1, when the sample gas scale of construction is less than 100mL, dustiness is less than 5mg/L, i.e., when dust total amount is less than 0.5mg, powder
Dirt filter E2 selects filter membrane Vinylidene Chloride filter membrane, and filter membrane is loaded dust filter unit E2 and by its one end and triple valve V1 phases
Even；
The memory for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connection
Dust filter unit E2 and gas volume flow gauge E1, make gas sample memory gas as far as possible at a slow speed, at the uniform velocity pass through volumetric flow of gas
E1 is counted, total tolerance Vg=80mL is write down, gas sample memory is pulled down after draining gas；
The Vinylidene Chloride filter membrane for capturing dust, be placed in the butyl acetate of 1mL and dissolve by step 3, finally that suspension is equal
It is even to be applied on sheet glass, application area S=1.0cm2；
Step 4, the dust being applied on sheet glass are observed dust particles size with the microscope for amplifying 400 times, and unite
Total amount is counted, observation area is Si=0.034mm2, observation frequency is n=6 (n>0.001 × S/Si), wherein 3 observation charts
As being listed in Fig. 2 a~Fig. 2 c, statistical result is listed in Table A；
Table A randomly selects 12 observation statistics dust particles sizes
Step 5, the dust particles size for collecting n=6 observation statistics, make dust particles grading curve (as schemed
3) the Dust Capacity m=0.5040 μ g of n=6 observation, are calculated, last divided by (n × Si/S), is dust total amount m in sample gas
=0.2470mg, dustiness 3.0880mg/L.
Embodiment 2
Step 1, when the sample gas scale of construction is less than 100mL, dustiness is more than 5mg/L, when dust total amount is less than 0.5mg, dust
Filter E2 selects filter membrane Vinylidene Chloride filter membrane, and filter membrane is loaded dust filter unit E2 and its one end is connected with triple valve V1；
The memory for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connection
Dust filter unit E2 and gas volume flow gauge E1, make gas sample memory gas as far as possible at a slow speed, at the uniform velocity pass through volumetric flow of gas
E1 is counted, total tolerance Vg=50~100mL is write down, gas sample memory is pulled down after draining gas；
The Vinylidene Chloride filter membrane for capturing dust, be placed in the butyl acetate of 1~2mL and dissolve by step 3, finally by suspension
Uniformly it is applied on sheet glass, application area is S=1~2cm2；
Step 4, the dust being applied on sheet glass are observed dust particles size with the microscope for amplifying 400 times, and unite
Total amount is counted, observation area is Si=0.01~0.04mm2, observation frequency is n (n>0.001×S/Si)；
Step 5, the dust particles size for collecting n observation statistics, make dust particles grading curve, calculate n times
The Dust Capacity of observation, last divided by (n × Si/S), is dust total amount in sample gas.
Embodiment 3
Step 1, when the sample gas scale of construction is less than 100mL, dustiness is more than 5mg/L, when dust total amount is more than or equal to 0.5mg,
Dust filter unit E2 filter membranes select acetate fiber filter membrane, filter membrane are loaded dust filter unit E2 and the m1=1.7538g that weighs, then
Its one end is connected with triple valve V1；
The airbag for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connects powder
Dirt filter E2 and gas volume flow gauge E1, extrudes airbag, gas is tried one's best at a slow speed, at the uniform velocity by gas volume flow gauge
E1, writes down total tolerance Vg=78mL, pulls down airbag；
Step 3, capture dust finish, and pull down dust filter unit E2, are weighed as m2=1.7549g, again connect its former end
Triple valve V1, swivel tee valve V1 are met, connects the syringe E3 containing deionized water and dust filter unit E2, backwashes dust mistake
Filter E2, pours beaker by the dust of capture and adds the [NaPO of 0.5mol/L3]6, stand 10h；
Solution after being soaked in step 4, beaker is transferred in laser particle analyzer, carries out grain diameter measurement；
Dust total amount is m2-m1=1.1mg in step 5, sample gas, dustiness 14.1026mg/L, dust particles grain
Footpath is result such as Fig. 4 measured by laser particle analyzer.
Embodiment 4
Step 1, when the sample gas scale of construction is less than 100L, dustiness is less than 5mg/L, i.e., when dust total amount is less than 0.5mg, dust
Filter E2 selects filter membrane Vinylidene Chloride filter membrane, and filter membrane is loaded dust filter unit E2 and its one end is connected with triple valve V1；
The memory for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connection
Dust filter unit E2 and gas volume flow gauge E1, make gas sample memory gas as far as possible at a slow speed, at the uniform velocity pass through volumetric flow of gas
E1 is counted, total tolerance Vg=1~100L is write down, gas sample memory is pulled down after draining gas；
The Vinylidene Chloride filter membrane for capturing dust, be placed in the butyl acetate of 1~2mL and dissolve by step 3, finally by suspension
Uniformly it is applied on sheet glass, application area is S=1~2cm2；
Step 4, the dust being applied on sheet glass are observed dust particles size with the microscope for amplifying 400 times, and unite
Total amount is counted, observation area is Si=0.01~0.04mm2, observation frequency is n (n>0.001×S/Si)；
Step 5, the dust particles size for collecting n observation statistics, make dust particles grading curve, calculate n times
The Dust Capacity of observation, last divided by (n × Si/S), is dust total amount in sample gas.
Embodiment 5
Step 1, when the sample gas scale of construction is less than 100L, dustiness is more than 5mg/L, when dust total amount is less than 0.5mg, dust mistake
Filter E2 selects filter membrane Vinylidene Chloride filter membrane, and filter membrane is loaded dust filter unit E2 and its one end is connected with triple valve V1；
The memory for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connection
Dust filter unit E2 and gas volume flow gauge E1, make gas sample memory gas as far as possible at a slow speed, at the uniform velocity pass through volumetric flow of gas
E1 is counted, total tolerance Vg=1~100L is write down, gas sample memory is pulled down after draining gas；
The Vinylidene Chloride filter membrane for capturing dust, be placed in the butyl acetate of 1~2mL and dissolve by step 3, finally by suspension
Uniformly it is applied on sheet glass, application area is S=1~2cm2；
Step 4, the dust being applied on sheet glass are observed dust particles size with the microscope for amplifying 400 times, and unite
Total amount is counted, observation area is Si=0.01~0.04mm2, observation frequency is n (n>0.001×S/Si)；
Step 5, the dust particles size for collecting n observation statistics, make dust particles grading curve, calculate n times
The Dust Capacity of observation, last divided by (n × Si/S), is dust total amount in sample gas.
Embodiment 6
Step 1, when the sample gas scale of construction is less than 100L, dustiness is more than 5mg/L, when dust total amount is more than 0.5mg, dust mistake
Filter E2 filter membranes select acetate fiber filter membrane, filter membrane are loaded dust filter unit E2 and the m1=1~2g that weighs, then by its one end
It is connected with triple valve V1；
The airbag for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connects powder
Dirt filter E2 and gas volume flow gauge E1, extrudes airbag, gas is tried one's best at a slow speed, at the uniform velocity by gas volume flow gauge
E1, writes down total tolerance Vg=1~100L, pulls down airbag；
Step 3, capture dust finish, and pull down dust filter unit E2, are weighed as m2=1.1~2.2g, again by its former end
Triple valve V1, swivel tee valve V1 are connected, connects the syringe E3 containing deionized water and dust filter unit E2, backwashes dust
Filter E2, pours beaker by the dust of capture and adds the [NaPO of 0.5mol/L3]6, stand 10h；
Solution after being soaked in step 4, beaker is transferred in laser particle analyzer, carries out grain diameter measurement；
Dust total amount is m2-m1 in step 5, sample gas, and dust particles particle diameter is the result measured by laser particle analyzer.
Embodiment 7
Step 1, when the sample gas scale of construction is more than 100L, dustiness is less than 5mg/L, when dust total amount is less than 0.5mg, dust mistake
Filter E2 selects filter membrane Vinylidene Chloride filter membrane, and filter membrane is loaded dust filter unit E2 and its one end is connected with triple valve V1；
The memory for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connection
Dust filter unit E2 and gas volume flow gauge E1, make gas sample memory gas as far as possible at a slow speed, at the uniform velocity pass through volumetric flow of gas
E1 is counted, total tolerance Vg=100~1000L is write down, gas sample memory is pulled down after draining gas；
The Vinylidene Chloride filter membrane for capturing dust, be placed in the butyl acetate of 1~2mL and dissolve by step 3, finally by suspension
Uniformly it is applied on sheet glass, application area is S=10~20cm2；
Step 4, the dust being applied on sheet glass are observed dust particles size with the microscope for amplifying 400 times, and unite
Total amount is counted, observation area is Si=0.01~0.04mm2, observation frequency is n (n>0.001×S/Si)；
Step 5, the dust particles size for collecting n observation statistics, make dust particles grading curve, calculate n times
The Dust Capacity of observation, last divided by (n × Si/S), is dust total amount in sample gas.
Embodiment 8
Step 1, when the sample gas scale of construction is more than 100L, dustiness is less than 5mg/L, when dust total amount is more than 0.5mg, dust mistake
Filter E2 filter membranes select acetate fiber filter membrane, filter membrane are loaded dust filter unit E2 and the m1=1~2g that weighs, then by its one end
It is connected with triple valve V1；
The airbag for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connects powder
Dirt filter E2 and gas volume flow gauge E1, extrudes airbag, gas is tried one's best at a slow speed, at the uniform velocity by gas volume flow gauge
E1, writes down total tolerance Vg=100~1000L, pulls down airbag；
Step 3, capture dust finish, and pull down dust filter unit E2, are weighed as m2=1.1~2.2g, again by its former end
Triple valve V1, swivel tee valve V1 are connected, connects the syringe E3 containing deionized water and dust filter unit E2, backwashes dust
Filter E2, pours beaker by the dust of capture and adds the [NaPO of 0.5mol/L3]6, stand 10h；
Solution after being soaked in step 4, beaker is transferred in laser particle analyzer, carries out grain diameter measurement；
Dust total amount is m2-m1 in step 5, sample gas, and dust particles particle diameter is the result measured by laser particle analyzer.
Embodiment 9
Step 1, when the sample gas scale of construction is more than 100L, dustiness is more than 5mg/L, i.e., when dust total amount is more than 0.5mg, dust
Filter E2 filter membranes select acetate fiber filter membrane, filter membrane are loaded dust filter unit E2 and the m1=1~2g that weighs, then by one
End is connected with triple valve V1；
The airbag for filling gas sample, be connected by step 2 with the other end of dust filter unit E2, swivel tee valve V1, connects powder
Dirt filter E2 and gas volume flow gauge E1, extrudes airbag, gas is tried one's best at a slow speed, at the uniform velocity by gas volume flow gauge
E1, writes down total tolerance Vg=100~1000L, pulls down airbag；
Step 3, capture dust finish, and pull down dust filter unit E2, are weighed as m2=1.1~2.2g, again by its former end
Triple valve V1, swivel tee valve V1 are connected, connects the syringe E3 containing deionized water and dust filter unit E2, backwashes dust
Filter E2, pours beaker by the dust of capture and adds the [NaPO of 0.5mol/L3]6, stand 10h；
Solution after being soaked in step 4, beaker is transferred in laser particle analyzer, carries out grain diameter measurement；
Dust total amount is m2-m1 in step 5, sample gas, and dust particles particle diameter is the result measured by laser particle analyzer.
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to the present invention
Embodiment restriction.For those of ordinary skill in the field, can also make on the basis of the above description
Other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all the present invention
All any modification, equivalent and improvement made within spirit and principle etc., should be included in the protection of the claims in the present invention
Within the scope of.
Claims (6)
1. a kind of device for collecting micro dust in gas, it is characterised in that including gas volume flow gauge（E1）, dust-filtering
Device（E2）, syringe（E3）, triple valve（V1）；
The dust filter unit（E2）Pass through triple valve（V1）Respectively with gas volume flow gauge（E1）And syringe（E3）It is connected,
The dust filter unit（E2）Also it is connected with gas reservoir.
2. the device according to claim 1 for collecting micro dust in gas, it is characterised in that the volumetric flow of gas
Meter（E1）Add up for sample gas flow detection and cumulative volume, and be shown in liquid crystal display.
3. the device according to claim 1 for collecting micro dust in gas, it is characterised in that the volumetric flow of gas
Meter（E1）It is corrected using soap bubble flowmeter.
4. the device according to claim 2 for collecting micro dust in gas, it is characterised in that the dust filter unit
（E2）Two kinds of filter membranes are installed respectively, Vinylidene Chloride filter membrane and acetate fiber filter membrane, be respectively suitable for dust total amount less than 0.1mg and
Situation more than or equal to 0.1mg.
5. the device according to claim 4 for collecting micro dust in gas, it is characterised in that the syringe（E3）With
In backwash dust filter unit（E2）The dust particles of interior filter membrane capture.
6. a kind of collect micro dust in gas and detect the method for grain diameter and content in the gas, it is characterised in that bag
Include following steps：
Step 1, dust filter unit（E2）The selection and installation of filter membrane：When dust total amount is less than 0.5mg in sample gas, dust mistake
Filter（E2）Filter membrane selects Vinylidene Chloride filter membrane；When dust total amount is more than or equal to 0.5mg in sample gas, dust filter unit（E2）
Filter membrane selects acetate fiber filter membrane, and the m1 that weighs；Filter membrane is chosen according to sample and loads dust filter unit（E2）And by its one end with
Triple valve（V1）It is connected；
Step 2, dust capture：The airbag and dust filter unit of gas sample will be filled（E2）The other end be connected, swivel tee valve
（V1）, connect dust filter unit（E2）With gas volume flow gauge（E1）, airbag is extruded, gas at a slow speed, is at the uniform velocity passed through as far as possible
Gas volume flow gauge（E1）, total tolerance Vg is write down, pulls down airbag；
Step 3, dust transfer and processing：Work as dust filter unit（E2）When filter membrane selects Vinylidene Chloride filter membrane, dust will be captured
Vinylidene Chloride filter membrane, which is placed in the butyl acetate of 1 ~ 2mL, to be dissolved, and is finally uniformly applied to suspension on sheet glass, application area is
S；Dust filter unit（E2）When filter membrane selects acetate fiber filter membrane, capture dust finishes the m2 that weighs, swivel tee valve（V1）, connection
Syringe containing deionized water（E3）With dust filter unit（E2）, backwash dust filter unit（E2）, the dust of capture is rushed
Enter beaker and add the [NaPO of 0.5mol/L3]6, stand 10h；
Step 4, dust size and total amount detection：The dust being applied on sheet glass is observed powder with the microscope for amplifying 400 times
Dirt granular size, and total amount is counted, observation area is Si, and observation frequency is n times（n>0.001×S/Si）；Soaked in beaker
Dust is transferred in laser particle analyzer, carries out grain diameter measurement；
Step 5, result calculate：When dust total amount is less than 0.5mg in sample gas, the dust particles for collecting n observation statistics are big
It is small, make dust particles grading curve, calculate the Dust Capacity of n observation, finally divided by（n×Si/S）, it is sample gas
Middle dust total amount；When dust total amount is more than or equal to 0.5mg in sample gas, dust total amount is m2-m1 in sample gas, dust particles
Particle diameter is the result measured by laser particle analyzer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444005A (en) * | 2018-12-26 | 2019-03-08 | 江苏新宏大集团有限公司 | Acid mist droplet measurement device and detection method |
| CN109459336A (en) * | 2018-09-25 | 2019-03-12 | 佛山科学技术学院 | A kind of detection method and device of hydrogen particle concentration |
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| CN109459336B (en) * | 2018-09-25 | 2024-04-30 | 佛山科学技术学院 | Method and device for detecting concentration of hydrogen particles |
| CN109444005A (en) * | 2018-12-26 | 2019-03-08 | 江苏新宏大集团有限公司 | Acid mist droplet measurement device and detection method |
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