CN103566841B - PM2.5 feeding system and method thereof - Google Patents
PM2.5 feeding system and method thereof Download PDFInfo
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- CN103566841B CN103566841B CN201310536714.XA CN201310536714A CN103566841B CN 103566841 B CN103566841 B CN 103566841B CN 201310536714 A CN201310536714 A CN 201310536714A CN 103566841 B CN103566841 B CN 103566841B
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Abstract
The invention discloses a PM2.5 feeding system and a method thereof. A vibrating screen feeder, an aerosol dust raising device, an aerosol buffer tank and diluter, a PM2.5 separator, a draught fan and an aerosol buffer tank are sequentially connected; a returning charge outlet of the aerosol buffer tank, a returning charge air flow control valve, a returning charge air flow meter and a vibrating-screen-level gas inlet at the bottommost layer of the vibrating screen feeder are sequentially connected; air flow supplied by the air compressor is divided into two ways by an air supplying air flow control valve of the air compressor, one way of the air flow is connected with an air inlet of the aerosol buffer tank and diluter through a diluter compressed air supplying control valve and a diluter compressed air supplying air flow meter, and the other way of the air flow is connected with an air inlet of the aerosol dust raising device through a dust raising device jet flow air pressure control valve and a dust raising device jet flow air pressure meter. According to the invention, mineral particles or carbonaceous particles which are collected actually act as particle sources, so that higher-concentration PM2.5 aerosol is generated automatically, continuously and stably, and the aerosol can be cut with accurate particle size.
Description
Technical field
The present invention relates to aerosol particle generation systems, particularly relate to a kind of PM
2.5feeding system and method thereof.
Background technology
Aerosol particle generation systems not only may be used for the research of particle physicochemical characteristic, the research of particle charging mechanism, the research of particle coalescence removal mechanism, and has important function in the research of simulating atmospheric environment and simulative power plant flue gas environment.Current aerosol particle generation systems is mainly divided into two kinds of type of skills, and a kind of utilization burning directly generates particle, and a kind of dust granules of collection that utilizes carries out particle airborne dust as particle source.
Burning is utilized directly to generate in the technology of particle, methane or propane gas and oxygen combustion is mainly utilized to generate carbon black granules, this aerosol has grain diameter little (being substantially in nanoscale) and higher stability, but the dust granules different from those in the actual flue of its carbon black granules and power plant is comparatively large, be unfavorable for carrying out the experimental study of the charged coalescence of particle, acoustic agglomeration, steam phase transformation condensation and chemical agglomeration etc.
Utilize the dust granules gathered as in the technology of particle source, mainly contain screw feeder system, Vibration Feeder System, negative-pressure ward spraying system, fluid bed feeding system and water evaporation and carry technology etc.Wherein, screw feeder system and Vibration Feeder System respectively by screw rod rotation forces and oscillatory spin feed, particle are entered in pipeline to form aerosol, negative-pressure ward spraying system directly aspirates particle and enter in pipeline by forming negative pressure state and form aerosol, three all can form stable aerosol to a certain extent, it disadvantageously lacks selective to grain diameter, can not form the aerosol of specific grain diameter demand.Fluid bed feeding system is the gas by blasting certain flow bottom bed, particle ceaselessly upper and lower Rolling flow is made by the Action of Gravity Field of strength effect and particle self, the particle that final mass is less is escaped and is formed aerosol, this technical know-how have selective to particle, but can not the gas flow of control inputs well in the operation of reality, and easily produce oarse-grained escape.The water evaporation technology of carrying is by being infiltrated in liquid phase by particle, liquid phase is made to carry partial particulate mutually in the process of evaporation by heating fluid, in the later stage, liquid phase is dried to the graininess obtaining drying again, this technology can obtain the less particle of particle diameter, but easily destroys particle physicochemical characteristic originally in the process of particle infiltration and the process of later stage oven dry liquid phase.
Therefore, develop a kind of novel based on actual flying ash in electric power plant, have grain diameter alternative, the stable particle generation systems of aerosol concentration is very necessary.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of PM is provided
2.5feeding system and method thereof.This aerosol generation systems can utilize the mineral particle thing or carbonaceous particle thing that collect as particle source, by airborne dust dilution and the cutting of accurate particle diameter, provides accurate PM
2.5aerosol, by improving through PM
2.5flow in separator, can provide the aerosol that grain diameter is less.This system gas sol particle airborne dust is abundant, avoids pipeline blockage, is applicable to the research for fine particle.
PM
2.5feeding system comprises shake sieve charger, aerosol airborne dust device, aerosol surge tank and diluter, PM
2.5separator, air-introduced machine, aerosol surge tank, returning charge control damper, returning charge air flow meter, diluter compressed air tonifying Qi air flow meter, diluter compressed air gas supply control valve, airborne dust device jet pneumatic control valve, airborne dust device jet atmospheric pressure table, air compressor machine are to entraining air stream control valve, air compressor, wherein shake sieve charger, aerosol airborne dust device, aerosol surge tank and diluter, PM
2.5separator, air-introduced machine, aerosol surge tank is connected in turn, the returning charge of aerosol surge tank exports, returning charge control damper, returning charge air flow meter, the sieve charger bottom that the shakes screen grading air inlet that shakes is connected in turn, the air-flow that air compressor provides is divided into two-way by air compressor machine to entraining air stream control valve, one tunnel is successively by diluter compressed air gas supply control valve, diluter compressed air tonifying Qi air flow meter is connected with the air inlet of aerosol surge tank and diluter, another road is successively by airborne dust device jet pneumatic control valve, airborne dust device jet atmospheric pressure table is connected with the air inlet of aerosol airborne dust device, described PM
2.5separator adopts charging aperture arranged tangential and the conical cyclone separator device of bottom belt ash bucket.
The described sieve charger that shakes adopts full-automatic 360 degree of multilayers to shake screen grading drawing mechanism, every one deck screen grading of shaking adopts disc screen cloth, bottom screen cloth adopts the industrial sieve of 400 order, every one deck shake screen grading all have tangential type arrange discharging opening, the bottom shake screen grading have tangential type arrange air inlet and discharging opening.
The charging aperture pipeline top of described aerosol airborne dust device is cone, cone top is positioned at aerosol airborne dust device internal cavity entrance center, the air inlet duct square crossing of cone and aerosol airborne dust device, charge air flow passage forms " gradually laval nozzle " form.
PM
2.5feeding method is: particle raw material to be shaken by multilayer after entering the sieve charger that shakes the sieve effect of shaking of screen grading, obtains the particle that grain diameter is less than 37.4 microns, under the bottom shakes the effect of screen grading charge air flow, form aerosol in the bottom shakes screen grading, aerosol airborne dust device internal cavity is entered through the cone top of its charging aperture pipeline after compressed air enters aerosol airborne dust device air inlet duct, charge air flow makes cone top pressure lower than aerosol airborne dust device charging aperture pressure by " Venturi effect ", the shake aerosol of screen grading discharging opening of the sieve charger bottom that shakes is impelled to enter aerosol airborne dust device charging aperture by " pressure differential effect ", wherein the flow of aerosol airborne dust device charging aperture controlled by aerosol airborne dust device charging aperture air pressure and air inlet air pressure, the charging aperture air pressure of setting aerosol airborne dust device is 1000 ~ 1040mbar, air inlet air pressure is 1.9 ~ 2.1bar, then aerosol airborne dust device charging aperture flow is 5.4 ~ 6.2L/min, aerosol airborne dust device discharging opening aerosol flow is 43 ~ 50 L/min, aerosol particle enters aerosol surge tank and diluter charging aperture by aerosol airborne dust device discharging opening, wherein aerosol surge tank and diluter discharging opening flow set are 85 ~ 90L/min, then aerosol surge tank and diluter air inlet flow are 35 ~ 47 L/min, and aerosol particle is cushioned and is diluted to 1/2 concentration in aerosol surge tank and diluter, aerosol after dilution enters PM by aerosol surge tank and diluter discharging opening
2.5separator charging aperture, passes through PM
2.5the guide functions of separator charging aperture arranged tangential produces strong rotation, and swirling eddy is along PM
2.5the conical bores inwall of separator helically moves downward, and the particle that volume mass is large departs from swirling eddy and arrives conical bores internal face and arrive PM along wall under gravity under centrifugal action
2.5the ash bucket of separator bottom, swirling eddy also upwards forms secondary vortex flow to central reduction and finally enters PM in conical bores
2.5the discharging opening of separator, setting PM
2.5separator discharging opening flow is 85 ~ 90 L/min, and aerosol particle thing is at PM
2.5be separated according to particle size size is cut in separator, the particle that wherein particle diameter is greater than 2.5 microns enters PM through separation
2.5the ash bucket of separator bottom, particle diameter is less than the particle of 2.5 microns from PM
2.5the discharging opening of separator enters the charging aperture of aerosol surge tank by air-introduced machine, in aerosol surge tank exit, air-flow is divided into two parts, a part is used for particle experimental study, a part enters by aerosol surge tank returning charge mouth the sieve charger air inlet that shakes, the particle aerosol state of screen grading of shaking for the formation of the sieve charger bottom that shakes, the sieve charger bottom that prevents from shaking shakes screen grading blocking.
Compared with the existing technology, beneficial effect of the present invention is embodied in:
(1) on the basis shaking sieve charger gradation sizing, associating air mix facilities and grain diameter separator, can utilize the mineral particle thing of actual acquisition or carbonaceous particle thing as particle source, realize Automatic continuous and stably produce PM
2.5aerosol.
(2) the returning charge air-flow that the sieve charger air inlet that shakes is provided by pipeline connection aerosol surge tank, form closed cycle on the one hand, the sieve charger bottom that shakes is caused on the other hand to shake screen grading slight positive pressure state, make the bottom screen grading particle that shakes be in airborne dust state, the sieve charger bottom that is conducive to shaking shakes the smooth discharging of screen grading.
(3) aerosol airborne dust device front end airflow mouth passes into the compressed air of the dry cleansing of certain pressure, control the charging aperture flow of aerosol airborne dust device and colloidal sol flow of working off one's feeling vent one's spleen on the one hand, the particle that screen grading that another aspect makes compressed air and the sieve charger bottom that shakes shakes provides fully mixes, and forms stable fine particulates airborne dust state.
(4) by PM
2.5the final cutting and separating of separator produces PM
2.5particle, by the airborne dust diluting effect of shake sieve charger gradation sizing effect and aerosol surge tank and diluter, alleviates PM
2.5the cutting granule density of separator, at PM
2.5when the ash bucket given volume of separator bottom, farthest widen the cleaning cycle of system and maintained the airborne dust state of particle.
(5) this PM
2.5feeding system particle accommodation is extensive, and grain diameter cutting is more accurate, and the system stable operation time is longer.
Accompanying drawing explanation
Fig. 1 is PM
2.5the structural representation of feeding system;
In figure, shake sieve charger 1, aerosol airborne dust device 2, aerosol surge tank and diluter 3, PM
2.5separator 4, air-introduced machine 5, aerosol surge tank 6, returning charge control damper 7, returning charge air flow meter 8, diluter compressed air tonifying Qi air flow meter 9, diluter compressed air gas supply control valve 10, airborne dust device jet pneumatic control valve 11, airborne dust device jet atmospheric pressure table 12, air compressor machine are to entraining air stream control valve 13, air compressor 14.
Detailed description of the invention
As shown in Figure 1, PM
2.5feeding system comprises shake sieve charger 1, aerosol airborne dust device 2, aerosol surge tank and diluter 3, PM
2.5separator 4, air-introduced machine 5, aerosol surge tank 6, returning charge control damper 7, returning charge air flow meter 8, diluter compressed air tonifying Qi air flow meter 9, diluter compressed air gas supply control valve 10, airborne dust device jet pneumatic control valve 11, airborne dust device jet atmospheric pressure table 12, air compressor machine are to entraining air stream control valve 13, air compressor 14, wherein shake sieve charger 1, aerosol airborne dust device 2, aerosol surge tank and diluter 3, PM
2.5separator 4, air-introduced machine 5, aerosol surge tank 6 is connected in turn, aerosol surge tank 6 returning charge exports, returning charge control damper 7, returning charge air flow meter 8, sieve charger 1 bottom that the shakes screen grading air inlet that shakes is connected in turn, the air-flow that air compressor 14 provides is divided into two-way by air compressor machine to entraining air stream control valve 13, one tunnel is successively by diluter compressed air gas supply control valve 10, diluter compressed air tonifying Qi air flow meter 9 is connected with the air inlet of aerosol surge tank and diluter 3, another road is successively by airborne dust device jet pneumatic control valve 11, airborne dust device jet atmospheric pressure table 12 is connected with the air inlet of aerosol airborne dust device 2, described PM
2.5separator 4 adopts charging aperture arranged tangential and the conical cyclone separator device of bottom belt ash bucket.
The described sieve charger 1 that shakes adopts full-automatic 360 degree of multilayers to shake screen grading drawing mechanism, every one deck screen grading of shaking adopts disc screen cloth, bottom screen cloth adopts the industrial sieve of 400 order, every one deck shake screen grading all have tangential type arrange discharging opening, the bottom shake screen grading have tangential type arrange air inlet and discharging opening.Every one deck shakes the discharging opening of screen grading, is convenient to particle discharging, the blocking of screen grading of avoiding shaking.Bottom screen grading of shaking has air inlet and discharging opening, wherein discharging opening is communicated with by the charging aperture of pipeline with aerosol airborne dust device 2, the returning charge air-flow that air inlet is provided by pipeline connection aerosol surge tank 6, be convenient to air-flow and form pressure-fired airborne dust state in sieve charger 1 bottom that shakes shakes screen grading, sieve charger 1 bottom of avoiding shaking shakes the blocking of screen grading discharging opening.By the classification sieve that shakes, primary particles is segmented further, thus alleviate the workload of subsequent dilution device and grain diameter separator.
The charging aperture pipeline top of described aerosol airborne dust device 2 is cone, cone top is positioned at aerosol airborne dust device 2 internal cavity entrance center, the air inlet duct square crossing of cone and aerosol airborne dust device 2, charge air flow passage forms " gradually laval nozzle " form.There is an air inlet near gating location in aerosol airborne dust device 2 front end, charging aperture flow and the discharging opening aerosol flow of aerosol airborne dust device 2 are controlled by the compressed air pressure of its air inlet.The discharging opening aerosol of aerosol airborne dust device 2 introduces aerosol surge tank and diluter 3 by pipeline.Wherein, aerosol airborne dust device 2 front end airflow mouth pass into gas and adopt the compressed air of dry cleansing, avoid steam and impurity to the interference of particle.
Described aerosol surge tank and diluter 3 discharging opening and PM
2.5separator 4 is connected by pipeline, its charging aperture is communicated with by the discharging opening of pipeline with aerosol airborne dust device 2, its air inlet passes into the compressed air that air compressor 14 provides, and the dilution ratio of aerosol surge tank and diluter 3 is by the discharging opening flow-control of its discharging opening flow and aerosol airborne dust device 2.Wherein, aerosol surge tank and diluter 3 air inlet pass into the compressed air that Compressed Gas adopts dry cleansing, avoid steam and impurity to the interference of particle.
Described air-introduced machine 5 charging aperture and PM
2.5separator 4 discharging opening is communicated with, control PM
2.5separator 4 flow is 85 ~ 90L/min, and its discharging opening is communicated with aerosol surge tank 6 charging aperture.
Described aerosol surge tank 6 charging aperture is communicated with air-introduced machine 5 discharging opening, and its discharging opening aerosol part provides PM
2.5aerosol is used for experimental study, and another part air-flow is introduced by pipeline sieve charger 1 bottom that shakes as returning charge air-flow and to be shaken screen grading air inlet, and returning charge air flow rate is controlled by returning charge control damper 7 and returning charge air flow meter 8.Wherein, returning charge air flow meter 7 selects mass-flow gas meter, for accurately controlling gas flow.
Described air compressor 14 is for providing compressed air, control total to throughput to entraining air stream control valve 13 by air compressor machine, the compressed air require wherein introducing aerosol surge tank and diluter 3 air inlet is controlled by diluter compressed air tonifying Qi air flow meter 9 and diluter compressed air gas supply control valve 10, and the compressed air require wherein introducing aerosol airborne dust device 2 air inlet is controlled by airborne dust device jet pneumatic control valve 11 and airborne dust device jet atmospheric pressure table 12.Wherein, diluter compressed air tonifying Qi air flow meter 9 selects mass-flow gas meter, for accurately controlling gas flow.
PM
2.5feeding method is: particle raw material to be shaken by multilayer after entering the sieve charger 1 that shakes the sieve effect of shaking of screen grading, obtains the particle that grain diameter is less than 37.4 microns, under the bottom shakes the effect of screen grading charge air flow, form aerosol in the bottom shakes screen grading, aerosol airborne dust device 2 internal cavity is entered through the cone top of its charging aperture pipeline after compressed air enters aerosol airborne dust device 2 air inlet duct, charge air flow makes cone top pressure lower than aerosol airborne dust device 2 charging aperture pressure by " Venturi effect ", the shake aerosol of screen grading discharging opening of sieve charger 1 bottom that shakes is impelled to enter aerosol airborne dust device 2 charging aperture by " pressure differential effect ", wherein the flow of aerosol airborne dust device 2 charging aperture controlled by aerosol airborne dust device 2 charging aperture air pressure and air inlet air pressure, the charging aperture air pressure of setting aerosol airborne dust device 2 is 1000 ~ 1040mbar, air inlet air pressure is 1.9 ~ 2.1bar, then aerosol airborne dust device 2 charging aperture flow is 5.4 ~ 6.2L/min, aerosol airborne dust device 2 discharging opening aerosol flow is 43 ~ 50 L/min, aerosol particle enters aerosol surge tank and diluter 3 charging aperture by aerosol airborne dust device 2 discharging opening, wherein aerosol surge tank and diluter 3 discharging opening flow set are 85 ~ 90L/min, then aerosol surge tank and diluter 3 air inlet flow are 35 ~ 47 L/min, and aerosol particle is cushioned and is diluted to 1/2 concentration in aerosol surge tank and diluter 3, aerosol after dilution enters PM by aerosol surge tank and diluter 3 discharging opening
2.5separator 4 charging aperture, passes through PM
2.5the guide functions of separator 4 charging aperture arranged tangential produces strong rotation, and swirling eddy is along PM
2.5the conical bores inwall of separator 4 helically moves downward, and the particle that volume mass is large departs from swirling eddy and arrives conical bores internal face and arrive PM along wall under gravity under centrifugal action
2.5ash bucket bottom separator 4, swirling eddy also upwards forms secondary vortex flow to central reduction and finally enters PM in conical bores
2.5the discharging opening of separator 4, setting PM
2.5separator 4 discharging opening flow is 85 ~ 90 L/min, and aerosol particle thing is at PM
2.5be separated according to particle size size is cut in separator 4, the particle that wherein particle diameter is greater than 2.5 microns enters PM through separation
2.5ash bucket bottom separator 4, particle diameter is less than the particle of 2.5 microns from PM
2.5the discharging opening of separator 4 enters the charging aperture of aerosol surge tank 6 by air-introduced machine 5, in aerosol surge tank 6 exit, air-flow is divided into two parts, a part is used for particle experimental study, a part enters by aerosol surge tank 6 returning charge mouth sieve charger 1 air inlet that shakes, the particle aerosol state of screen grading of shaking for the formation of sieve charger 1 bottom that shakes, sieve charger 1 bottom that prevents from shaking shakes screen grading blocking.
Claims (4)
1. a PM
2.5feeding system, is characterized in that comprising shake sieve charger (1), aerosol airborne dust device (2), aerosol surge tank and diluter (3), PM
2.5separator (4), air-introduced machine (5), aerosol surge tank (6), returning charge control damper (7), returning charge air flow meter (8), diluter compressed air tonifying Qi air flow meter (9), diluter compressed air gas supply control valve (10), airborne dust device jet pneumatic control valve (11), airborne dust device jet atmospheric pressure table (12), air compressor machine are to entraining air stream control valve (13), air compressor (14), wherein shake sieve charger (1), aerosol airborne dust device (2), aerosol surge tank and diluter (3), PM
2.5separator (4), air-introduced machine (5), aerosol surge tank (6) is connected in turn, aerosol surge tank (6) returning charge exports, returning charge control damper (7), returning charge air flow meter (8), sieve charger (1) bottom screen grading air inlet that shakes that shakes is connected in turn, the air-flow that air compressor (14) provides is divided into two-way by air compressor machine to entraining air stream control valve (13), one tunnel is successively by diluter compressed air gas supply control valve (10), diluter compressed air tonifying Qi air flow meter (9) is connected with the air inlet of aerosol surge tank and diluter (3), another road is successively by airborne dust device jet pneumatic control valve (11), airborne dust device jet atmospheric pressure table (12) is connected with the air inlet of aerosol airborne dust device (2), described PM
2.5separator (4) adopts charging aperture arranged tangential and the conical cyclone separator device of bottom belt ash bucket.
2. a kind of PM according to claim 1
2.5feeding system, it is characterized in that, described sieve charger (1) that shakes adopts full-automatic 360 degree of multilayers to shake screen grading drawing mechanism, every one deck screen grading of shaking adopts disc screen cloth, bottom screen cloth adopts the industrial sieve of 400 order, every one deck shake screen grading all have tangential type arrange discharging opening, the bottom shake screen grading have tangential type arrange air inlet and discharging opening.
3. a kind of PM according to claim 1
2.5feeding system, it is characterized in that, the charging aperture pipeline top of described aerosol airborne dust device (2) is cone, cone top is positioned at aerosol airborne dust device (2) internal cavity entrance center, the air inlet duct square crossing of cone and aerosol airborne dust device (2), charge air flow passage forms " gradually laval nozzle " form.
4. one kind uses the PM of system as claimed in claim 1
2.5feeding method, it is characterized in that, particle raw material to be shaken by multilayer after entering sieve charger (1) that shakes the sieve effect of shaking of screen grading, obtains the particle that grain diameter is less than 37.4 microns, under the bottom shakes the effect of screen grading charge air flow, form aerosol in the bottom shakes screen grading, aerosol airborne dust device (2) internal cavity is entered through the cone top of its charging aperture pipeline after compressed air enters aerosol airborne dust device (2) air inlet duct, charge air flow makes cone top pressure lower than aerosol airborne dust device (2) charging aperture pressure by " Venturi effect ", the shake aerosol of screen grading discharging opening of sieve charger (1) bottom that shakes is impelled to enter aerosol airborne dust device (2) charging aperture by " pressure differential effect ", wherein the flow of aerosol airborne dust device (2) charging aperture controlled by aerosol airborne dust device (2) charging aperture air pressure and air inlet air pressure, the charging aperture air pressure of setting aerosol airborne dust device (2) is 1000 ~ 1040mbar, air inlet air pressure is 1.9 ~ 2.1bar, then aerosol airborne dust device (2) charging aperture flow is 5.4 ~ 6.2L/min, aerosol airborne dust device (2) discharging opening aerosol flow is 43 ~ 50 L/min, aerosol particle enters aerosol surge tank and diluter (3) charging aperture by aerosol airborne dust device (2) discharging opening, wherein aerosol surge tank and diluter (3) discharging opening flow set are 85 ~ 90L/min, then aerosol surge tank and diluter (3) air inlet flow are 35 ~ 47 L/min, and aerosol particle is cushioned and is diluted to 1/2 concentration in aerosol surge tank and diluter (3), aerosol after dilution enters PM by aerosol surge tank and diluter (3) discharging opening
2.5separator (4) charging aperture, passes through PM
2.5the guide functions of separator (4) charging aperture arranged tangential produces strong rotation, and swirling eddy is along PM
2.5the conical bores inwall of separator (4) helically moves downward, and the particle that volume mass is large departs from swirling eddy and arrives conical bores internal face and arrive PM along wall under gravity under centrifugal action
2.5the ash bucket of separator (4) bottom, swirling eddy also upwards forms secondary vortex flow to central reduction and finally enters PM in conical bores
2.5the discharging opening of separator (4), setting PM
2.5separator (4) discharging opening flow is 85 ~ 90 L/min, and aerosol particle thing is at PM
2.5be separated according to particle size size is cut in separator (4), the particle that wherein particle diameter is greater than 2.5 microns enters PM through separation
2.5the ash bucket of separator (4) bottom, particle diameter is less than the particle of 2.5 microns from PM
2.5the discharging opening of separator (4) enters the charging aperture of aerosol surge tank (6) by air-introduced machine (5), in aerosol surge tank (6) exit, air-flow is divided into two parts, a part is used for particle experimental study, a part enters by aerosol surge tank (6) returning charge mouth sieve charger (1) air inlet that shakes, to shake the particle aerosol state of screen grading for the formation of sieve charger (1) bottom that shakes, sieve charger (1) bottom that prevents from shaking shakes screen grading blocking.
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| CN201310536714.XA CN103566841B (en) | 2013-11-04 | 2013-11-04 | PM2.5 feeding system and method thereof |
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| CN201310536714.XA CN103566841B (en) | 2013-11-04 | 2013-11-04 | PM2.5 feeding system and method thereof |
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| CN103566841B true CN103566841B (en) | 2015-04-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103913418B (en) * | 2014-03-12 | 2016-07-06 | 中国人民解放军电子工程学院 | Biologic grain automatic spraying release device |
| CN106622049B (en) * | 2017-03-05 | 2022-07-08 | 宁波工程学院 | Salt particle aerosol generating system with adjustable concentration |
| CN108120623B (en) * | 2018-01-12 | 2023-09-01 | 西华大学 | Hierarchical sampling device for exhaust particulate matters of diesel engine and control method thereof |
| CN116275074A (en) * | 2022-02-08 | 2023-06-23 | 河南能微新材料科技有限公司 | Method for controlling preparation of micron spheroidized powder or nano powder |
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|---|---|---|---|---|
| CN202860509U (en) * | 2012-09-28 | 2013-04-10 | 青岛众瑞智能仪器有限公司 | DOP (Dioctyl-Phthalate) aerosol generator |
| CN203155194U (en) * | 2013-04-02 | 2013-08-28 | 青岛众瑞智能仪器有限公司 | Aerosol generator |
| CN203620612U (en) * | 2013-11-04 | 2014-06-04 | 浙江大学 | PM2.5 feeding system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202860509U (en) * | 2012-09-28 | 2013-04-10 | 青岛众瑞智能仪器有限公司 | DOP (Dioctyl-Phthalate) aerosol generator |
| CN203155194U (en) * | 2013-04-02 | 2013-08-28 | 青岛众瑞智能仪器有限公司 | Aerosol generator |
| CN203620612U (en) * | 2013-11-04 | 2014-06-04 | 浙江大学 | PM2.5 feeding system |
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