CN105067773B - A kind of inorganization dust dust suppressant dust suppression rate test evaluation device and method - Google Patents
A kind of inorganization dust dust suppressant dust suppression rate test evaluation device and method Download PDFInfo
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Abstract
The invention discloses the test device and method of a kind of inorganization dust dust suppressant dust suppression rate, mainly include axial flow blower, Laboratory Module, measurement regulation device, described measurement regulation device is made up of thermo hydrograph regulator, smoke dust sampler and Electrical low pressure impactor, described axial flow blower is connected with Laboratory Module high speed winds section by being flexible coupling, and described axial flow blower and thermo hydrograph regulator connect；Laboratory Module is divided into Laboratory Module high speed winds section, Laboratory Module wind direction regulation section, Laboratory Module low speed segment and Laboratory Module exhaust section along wind direction tendency, Laboratory Module high speed winds section top is provided with test port, it is provided with wind direction regulating device between Laboratory Module wind direction regulation section and Laboratory Module low speed segment, double fluid atomization nozzle and material whereabouts mouth it is provided with at Laboratory Module low speed segment top, bottom is provided with sewage discharge hole, and side is provided with test port；Described smoke dust sampler and Electrical low pressure impactor and test port connect.This device to test is convenient, accurately, reliable operation, and can simulated environmental parameters accurately.
Description
One. technical field
The invention belongs to field of environmental technology, specifically refer to a kind of inorganization dust dust suppressant dust suppression rate test evaluation
Device.
Two. background technology
Inorganization dust emission is often referred to do not have fixed discharge facility or the dust emission below certain altitude,
Be widely present in bulk cargo produce, process, transport, the links such as handling, be not only mine, in building, adopt
The places such as stone field, stockyard, harbour, thermal power plant, steel plant, cement plant, garbage reclamation process all it may happen that.
As a example by thermal power plant, bunker coal is easy to produce reentrainment of dust, building in transport, handling, storage process
The stone material of needs, cement, sand etc. when building, also can produce a large amount of particle diameter less than 2.5 μm in preparation process
The respirable dust of uncontrollable discharge, respirable dust refers to that particle diameter can enter human body alveolar below 2.5 μm
The particulate matter in district.The feature of this kind of dust is: particle diameter is little, the surface area that compares is big, chemism is high, absorption
Ability is strong.The dust attribute produced because of different industries varies, again by anthropic factor, natural conditions, operating mode
Deng disturbance, swim for a long time and dissipate the most everywhere, use general technology to be difficult to effectively and administer.Thus inorganization
The preventing and treating of the respirable dust of discharge just becomes emphasis and the difficult point of presently relevant industry dust-proof working.
Dust suppression technology for inorganization dust sprays dust suppressant solution mainly by atomizer at present, can produce
Raw particle diameter, less than the ultra-fine dry fog of 10 μm, not only substantially increases the contact area with dust granules, also changes
The wettability of dust, promotes dust to form aggregate, and aggregate constantly becomes and becomes greatly weight, the most naturally sinks until last
Fall, reaches to eliminate the purpose of dust.Different dust suppressants, its dust suppression efficiency how, temporarily goes back neither one
The device evaluated or system, also neither one standard specifies.
Three, summary of the invention
Goal of the invention: it is an object of the invention to provide a kind of inorganization dust dust suppressant dust suppression rate test evaluation device
And method, convenient test, test data are accurate, reliable operation.
Technical scheme: a kind of inorganization dust dust suppressant dust suppression rate test evaluation device, mainly include axial flow blower,
Laboratory Module, measurement regulation device, described measurement regulation device is by thermo hydrograph regulator, smoke dust sampler and electricity
Claiming low pressure impacter composition, described axial flow blower is connected with Laboratory Module high speed winds section by being flexible coupling, described
Axial flow blower and thermo hydrograph regulator connect；Laboratory Module is divided into Laboratory Module high speed winds section, Laboratory Module along wind direction tendency
Wind direction regulation section, Laboratory Module low speed segment and Laboratory Module exhaust section, Laboratory Module high speed winds section top is provided with test port,
It is provided with wind direction regulating device, on Laboratory Module low speed segment top between Laboratory Module wind direction regulation section and Laboratory Module low speed segment
Portion is provided with double fluid atomization nozzle and material whereabouts mouth, and bottom is provided with sewage discharge hole, and side is provided with test port；
Described smoke dust sampler and Electrical low pressure impactor and test port connect.
Described axial flow blower is the adjustable frequency conversion fan of wind speed.
Described Laboratory Module high speed winds segment length is 0.5-2.0m, and height is 0.5 times of low speed segment.Laboratory Module is low
Speed segment length is 0.5-1.5m, a length of 1.0-3.5m of Laboratory Module, and height is 0.5-1.0m.
Described wind direction regulating device is that inside and outside two-layer is mutually perpendicular to form in latticed loose-leaf.
Described double fluid atomization nozzle is connected with dust suppressant make-up tank, air compressor machine.
Test evaluation method based on described inorganization dust dust suppressant dust suppression rate test evaluation device, by adjusting
The air-flow wind speed of the axial flow blower of device regulation frequently, by the humiture of thermo hydrograph regulator regulation Laboratory Module, air-flow leads to
Cross the entrance Laboratory Module that is flexible coupling, during high wind speed test evaluation, place experiment dust in experiment bin high speed winds section front end,
After experiment dust sprays dust suppressant, by test port, respectively with smoke dust sampler, Electrical low pressure impactor
Test experiments wind speed blows over the experiment wind speed of dust, total dirt and particle size distribution；In low wind speed test comment
During valency, air-flow by wind direction regulating device, makes air-flow even into experiment bin low speed via Laboratory Module high speed winds section
Section, is first not added with dust suppressant and is sprayed into liquid and the thing of top material whereabouts mouth entrance by the double fluid atomization nozzle at top
Material mixing, by test port, blows over thing with smoke dust sampler, Electrical low pressure impactor test experiments wind speed respectively
Wind speed, total dirt and the particle size distribution of material, sewage is arranged by the sewage discharge hole bottom experiment bin low speed segment
Going out, air-flow is finally discharged through Laboratory Module exhaust section, then under same duty, converts different dust suppressants
Spray into via double fluid atomization nozzle with the efficiency of the different dust suppressant of test.
Beneficial effect:
(1) under the dust suppressant dust suppression rate test evaluation device that the present invention proposes can simulate different natural environment
Parameter, make the evaluation of dust suppressant more meet reality.
(2) efficiency of different dust suppressants is evaluated, before research or using different dust suppressants,
By dust suppressant dust suppression rate test evaluation device of the present invention, the dust suppression efficiency of dust suppressant can be entered
Row mensuration in advance, so can use different dust suppressants as required.
Four, accompanying drawing explanation
Fig. 1 is assembly of the invention structural representation
In figure: 1-axial flow blower；2-experiment bin high speed winds section；3-wind direction regulating device；4-experiment bin low speed segment；
5-experiment bin exhaust section；6-thermo hydrograph regulator；7-smoke dust sampler；8-Electrical low pressure impactor；9-double fluid
Body atomizer.
Five, detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with the accompanying drawings 1, the structural principle of the present invention is made
Further describe in detail:
A kind of dust suppressant dust suppression rate test evaluation device, described axial flow blower 1 is frequency modulation blower fan, passes through frequency modulator
Scalable self rotating speed, axial flow blower 1 is connected, by connected with experiment bin high speed winds section 2 by being flexible coupling
Thermo hydrograph regulator 6 regulates the temperature of experiment bin, humidity, under in high speed winds, as surveyed under more than 8 grades wind speed
During examination, can be by manually placing experiment dust in experiment bin high speed winds section 2 front end, in Laboratory Module high speed winds
The test port that section 2 is arranged, tests certain wind speed with smoke dust sampler 7, Electrical low pressure impactor 8 respectively and blows over
The wind speed of dump, total dirt and particle size distribution.Laboratory Module high speed winds section 2 is sequentially connected with Laboratory Module below
Wind direction regulation section, experiment bin low speed segment 4 and Laboratory Module exhaust section 5.Laboratory Module low speed segment and Laboratory Module wind direction are adjusted
It is provided with wind direction regulating device 3 between sections, makes air-flow even into experiment bin low speed segment 4, be provided with at its top
Double fluid atomization nozzle 9 and material whereabouts mouth, double fluid atomization nozzle 9 and dust suppressant make-up tank, air compressor machine phase
Connecting, can regulate the spraying parameter of nozzle, be provided with sewage discharge hole bottom experiment bin low speed segment 4, side sets
Having gaging hole, air-flow is finally discharged through Laboratory Module exhaust section 5.Experiment bin is made up of lucite, makes test be easy to
Observe.
The wherein a length of 0.5-2.0m of Laboratory Module high speed winds section 2, a length of 0.5-1.5m of Laboratory Module low speed segment 4,
The a length of 1.0-3.5m of whole Laboratory Module.
Described axial flow blower 1 is the adjustable frequency conversion fan of wind speed, can produce the wind speed of 0～30m/s, permissible
The wind speed of 0～7 grade in simulated environment.
It is provided with wind direction regulating device 3 before described experiment bin low speed segment 4.
Described measurement regulation device is by thermo hydrograph regulator 6, smoke dust sampler 7, Electrical low pressure impactor 8
Composition.
Described nozzle 9 is double fluid atomization nozzle.
Test evaluation method based on described inorganization dust dust suppressant dust suppression rate test evaluation device, by adjusting
The air-flow wind speed of the axial flow blower of device regulation frequently, by the humiture of thermo hydrograph regulator regulation Laboratory Module, air-flow leads to
Cross the entrance Laboratory Module that is flexible coupling, during high wind speed test evaluation, place experiment dust in experiment bin high speed winds section front end,
After experiment dust sprays dust suppressant, by test port, respectively with smoke dust sampler, Electrical low pressure impactor
Test experiments wind speed blows over the experiment wind speed of dust, total dirt and particle size distribution；In low wind speed test comment
During valency, air-flow by wind direction regulating device, makes air-flow even into experiment bin low speed via Laboratory Module high speed winds section
Section, is first not added with dust suppressant and is sprayed into liquid and the thing of top material whereabouts mouth entrance by the double fluid atomization nozzle at top
Material mixing, by test port, blows over thing with smoke dust sampler, Electrical low pressure impactor test experiments wind speed respectively
Wind speed, total dirt and the particle size distribution of material, sewage is arranged by the sewage discharge hole bottom experiment bin low speed segment
Going out, air-flow is finally discharged through Laboratory Module exhaust section, then under same duty, converts different dust suppressants
Spray into via double fluid atomization nozzle with the efficiency of the different dust suppressant of test.
The operation principle of the present invention is: the material needing detection is put into the screw feeder above the mouth of material whereabouts
In, make material freely fall into experiment bin low speed segment 4, axial flow blower 1 works with certain wind speed, can be according to test
Needing to regulate axial flow blower rotating speed, typically about fresh breeze, in experiment bin low speed segment 4, humiture is by warm and humid
Degree actuator 6 is adjusted, and under not using dust suppressant duty, uses smoke dust sampler 7, electricity to claim low
Total dirt in pressure impacter 8 experiments of measuring storehouse low speed segment 4 respectively and PM2.5；Keep operating mode constant, pass through
Double fluid atomization nozzle variety classes dust suppressant, total dirt and PM in experiments of measuring storehouse low speed segment 42.5；By than
Total dirt and PM after not using dust suppressant and using dust suppressant the most of the same race2.5, pressing down of sprinkling can be recorded
The dust suppression efficiency of dirt agent.
The above, only presently preferred embodiments of the present invention, not the present invention is made any pro forma limit
System；The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement this swimmingly
Invention；But, all those skilled in the art are in the range of without departing from technical solution of the present invention, available
Disclosed above technology contents and make a little change, the equivalent variations modified and develop, be the present invention's
Equivalent embodiments；Meanwhile, all substantial technological according to the present invention are to any equivalent variations made for any of the above embodiments
Change, modify and differentiation etc., within belonging to the protection domain of technical scheme.
Claims (6)
1. an inorganization dust dust suppressant dust suppression rate test evaluation device, it is characterized in that, mainly include axial flow blower (1), Laboratory Module, measurement regulation device, described measurement regulation device is made up of thermo hydrograph regulator (6), smoke dust sampler (7) and Electrical low pressure impactor (8), described axial flow blower is connected with Laboratory Module high speed winds section (2) by being flexible coupling, and described axial flow blower (1) and thermo hydrograph regulator (6) connect；Laboratory Module is divided into Laboratory Module high speed winds section (2), Laboratory Module wind direction regulation section, Laboratory Module low speed segment (4) and Laboratory Module exhaust section (5) along wind direction tendency, Laboratory Module high speed winds section (2) top is provided with test port, it is provided with wind direction regulating device (3) between Laboratory Module wind direction regulation section and Laboratory Module low speed segment (4), double fluid atomization nozzle (9) and material whereabouts mouth it is provided with at Laboratory Module low speed segment (4) top, bottom is provided with sewage discharge hole, and side is provided with test port；Described smoke dust sampler (7) and Electrical low pressure impactor (8) connect with test port respectively.
Inorganization dust dust suppressant dust suppression rate test evaluation device the most according to claim 1, it is characterised in that described axial flow blower (1) is the adjustable frequency conversion fan of wind speed.
Inorganization dust dust suppressant dust suppression rate test evaluation device the most according to claim 1, it is characterized in that, described Laboratory Module high speed winds section (2) a length of 0.5-2.0 m, it it is highly 0.5 times of low speed segment, Laboratory Module low speed segment (4) a length of 0.5-1.5 m, Laboratory Module a length of 1.0-3.5 m, height is 0.5-1.0m.
Inorganization dust dust suppressant dust suppression rate test evaluation device the most according to claim 1, it is characterised in that described wind direction regulating device (3) is that inside and outside two-layer is mutually perpendicular to form in latticed loose-leaf.
Inorganization dust dust suppressant dust suppression rate test evaluation device the most according to claim 1, it is characterised in that described double fluid atomization nozzle (9) is connected with dust suppressant make-up tank, air compressor machine.
6. test evaluation method based on the arbitrary described inorganization dust dust suppressant dust suppression rate test evaluation device of claim 1 ~ 5, it is characterized in that, air-flow wind speed by frequency modulator regulation axial flow blower (1), humiture by thermo hydrograph regulator (6) regulation Laboratory Module, air-flow is by the entrance Laboratory Module that is flexible coupling, during high wind speed test evaluation, experiment dust is placed in experiment bin high speed winds section (2) front end, after experiment dust sprays dust suppressant, pass through test port, respectively with smoke dust sampler (7), Electrical low pressure impactor (8) test experiments wind speed blows over the wind speed of experiment dust, total dirt, and particle size distribution；In low wind speed test evaluation time, air-flow passes through wind direction regulating device (3) via Laboratory Module high speed winds section (2), make air-flow even into experiment bin low speed segment (4), first it is not added with dust suppressant and is sprayed into the material mixing of liquid and the entrance of top material whereabouts mouth by the double fluid atomization nozzle (9) at top, pass through test port, respectively with smoke dust sampler (7), Electrical low pressure impactor (8) test experiments wind speed blows over the wind speed of material, total dirt, and particle size distribution, sewage is discharged by the sewage discharge hole of experiment bin low speed segment (4) bottom, air-flow is finally discharged through Laboratory Module exhaust section (5), again under same duty, convert different dust suppressants to spray into via double fluid atomization nozzle (9) with the efficiency of the different dust suppressant of test.
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Address after: 210093 Nanjing University Science Park, 22 Hankou Road, Gulou District, Nanjing City, Jiangsu Province Patentee after: Southeast University Address before: 211103 No. 59 Wan'an West Road, Dongshan Street, Jiangning District, Nanjing City, Jiangsu Province Patentee before: Southeast University |