CN102614803A - Dynamic generator for multicomponent low-concentration standard gas - Google Patents
Dynamic generator for multicomponent low-concentration standard gas Download PDFInfo
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- CN102614803A CN102614803A CN2012100738011A CN201210073801A CN102614803A CN 102614803 A CN102614803 A CN 102614803A CN 2012100738011 A CN2012100738011 A CN 2012100738011A CN 201210073801 A CN201210073801 A CN 201210073801A CN 102614803 A CN102614803 A CN 102614803A
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Abstract
The invention relates to a dynamic generator for multicomponent low-concentration standard gas, and belongs to the field of the generation of standard gas. According to the dynamic generator, a carrier gas source outlet is connected with a humidification tank by a pipeline; the humidification tank is connected in parallel at the inlet end and the outlet end of a bypass valve; a microporous humidification head is arranged in the humidification tank and is connected with the outlet end of a first flow controller and the inlet end of the bypass valve simultaneously by the pipeline; a polluted gas source is connected with a gas collector by the pipeline, and a flow controller is arranged on the connected pipeline for connecting the polluted gas source and the gas collector; a capillary sprayer is arranged in the gas collector; a liquid injection pump is connected with the capillary sprayer in the gas collector; and a constant temperature heating sleeve is wrapped outside the gas collector. According to the dynamic generator, due to the adoption of a mode of the liquid injection pump, the proportioning of multiple organic pollutants is realized simply and accurately, and the multicomponent low-concentration standard gas with the concentration ranging from 0.01 to 20 mg/m<3> can be generated simultaneously. The dynamic generator can be applied to multiple fields of scientific research, environment, chemistry, chemicals and the like.
Description
Technical field
The present invention relates to the dynamic generating means of a kind of multicomponent low concentration calibrating gas, belong to calibrating gas the field takes place.
Background technology
Indoor air quality appreciable impact people's comfortable, health and operating efficiency more and more receive people's attention.And organic volatile compound (VOCs) excessive concentration that indoor article and decoration material discharge is the one of the main reasons that causes indoor air quality inferior.Be to guarantee the indoor environment of safety and comfort, many material for air purification are widely used in indoor environment, such as charcoal absorption material, nanometer titanium dioxide photocatalysis material, room temperature thermocatalytic material etc.Therefore the performance that detects these material for air purification is very important.General detection method is at first to dispose the dusty gas of constant density, then via the purifying part that contains these material for air purification, assesses the performance of these materials through monitoring purifying part exit concentration.How simultaneously its difficult point is the dusty gas of constant generation multicomponent low concentration.
Method at present commonly used is to use the gas bottle to produce the dusty gas of steady concentration, but its shortcoming is to be difficult to keep long experiment, for example reaches the adsorption penetration experiment in 1 week; In addition, change the gas bottle, concentration takes place for it all needs the long period just can reach stable at every turn; And when needing the multiple dusty gas of research to have the clean-up effect under the situation simultaneously, often need dispose a plurality of gas bottles and a plurality of mass flow controller, system complex not only, and cost an arm and a leg, increased experimental cost greatly.China State Standard Matter Research Centre has developed anemostat calibrating gas and dynamic air-distributing device thereof, and this installs based on anemostat or osmos tube principle, when multiple dusty gas takes place need; Need a plurality of anemostats of configuration or osmos tube, cost an arm and a leg, and the dusty gas of each anemostat or osmos tube generation speed is fixed; When changing, need produce speed; Then need purchase new anemostat or osmos tube, not only increase experimental cost, but also be difficult to dynamic adjustments.In addition, also can adjust the gas concentration that produces, but when the calibrating gas of configuration low concentration, the relative carrier gas of the amount of diluent gas is sizable through the mode of dilution.Under the situation of carrier gas, the concentration that changes final gained composite pollution gas through the amount that changes diluent gas is unusual poor efficiency, has also introduced dilution error simultaneously in the amount of diluent gas, and control requires harsh to dilution flow rate.
Summary of the invention
The objective of the invention is to propose the dynamic generating means of a kind of multicomponent low concentration calibrating gas, to overcome the deficiency of the existing dynamic method for generation of dusty gas, cost is low, the precision highland utilizes the liquid syringe pump to produce 0.01～20mg/m
3The multicomponent light concentration gas of concentration range, the multicomponent low concentration calibrating gas of acquisition desired concn.
The dynamic generating means of multicomponent light concentration gas that the present invention proposes comprises: carrier gas source of the gas, dusty gas source of the gas, humidification jar, liquid syringe pump, gas collector, heated at constant temperature cover, micropore head, capillary shower nozzle and by-passing valve; Described carrier gas source of the gas outlet links to each other with the humidification jar through pipeline, and the pipeline that the carrier gas source of the gas links to each other with the humidification jar is provided with first flow controller and by-passing valve, and the humidification jar is connected in parallel on the entrance point and the port of export of by-passing valve; Described micropore head places the humidification jar, and the micropore head links to each other with the port of export of first flow controller and the entrance point of by-passing valve through pipeline simultaneously; The port of export of by-passing valve links to each other with gas collector; Described dusty gas source of the gas links to each other with gas collector through pipeline, and the pipeline that the dusty gas source of the gas links to each other with gas collector is provided with second flow controller; Described capillary shower nozzle places gas collector; Described liquid syringe pump links to each other with capillary shower nozzle in the gas collector through pipeline; Described heated at constant temperature cover is wrapped in the outside of gas collector; Gas collector is provided with multicomponent low concentration calibrating gas.
The dynamic generating means of multicomponent low concentration calibrating gas that the present invention proposes; The characteristic that can dissolve each other each other according to indoor organic pollutant; Adopt the mode of liquid syringe pump, simply, accurately realize the proportioning of multiple organic pollution, and inject air distribution system through the capillary shower nozzle by the liquid syringe pump; Because injection rate very little (being about 0.01nL/min) can evaporate into gas rapidly in the gas collector of air distribution system.The liquid syringe pump can be changed in experimentation, thereby realized the generation according to experimental result rapid adjustment variable concentrations by control program control different liquid charge velocity able to programme at any time.Gas-dynamic generating means of the present invention can produce 0.01～20mg/m simultaneously
3The multicomponent low concentration calibrating gas of concentration range.Apparatus of the present invention can be applicable to a plurality of fields such as scientific research, environment, chemistry, chemical industry.
Description of drawings
Fig. 1 is the structural representation of the dynamic generating means of multicomponent light concentration gas of proposition of the present invention.
Fig. 2 is the structural representation of the capillary shower nozzle that uses in apparatus of the present invention.
Among Fig. 1, the 1st, carrier gas source of the gas, the 2nd, first flow controller, the 3rd, humidification jar; The 4th, micropore head, the 5th, by-passing valve, the 6th, dusty gas source of the gas; 7 is second flow controllers, the 8th, and liquid syringe pump, the 9th, gas collector; The 10th, capillary shower nozzle, the 11st, heated at constant temperature cover, the 12nd, the outlet of multicomponent low concentration calibrating gas.
The specific embodiment
The dynamic generating means of multicomponent light concentration gas that the present invention proposes; Its structure is as shown in Figure 1, comprising: carrier gas source of the gas 1, dusty gas source of the gas 6, humidification jar 3, liquid syringe pump 8, gas collector 9, heated at constant temperature cover 11, micropore head 4, capillary shower nozzle 10 and by-passing valve 5.The outlet of carrier gas source of the gas 1 links to each other with humidification jar 3 through pipeline, and the pipeline that carrier gas source of the gas 1 links to each other with humidification jar 3 is provided with first flow controller 2 and by-passing valve 5, and humidification jar 3 is connected in parallel on the entrance point and the port of export of by-passing valve 5.Micropore head 4 places humidification jar 3, and micropore head 4 links to each other with the port of export of first flow controller 2 and the entrance point of by-passing valve 5 through pipeline simultaneously; The port of export of by-passing valve 5 links to each other with gas collector 9.Dusty gas source of the gas 6 links to each other with gas collector 9 through pipeline, and the pipeline that dusty gas source of the gas 6 links to each other with gas collector 9 is provided with second flow controller 7.Capillary shower nozzle 10 places gas collector 9.Liquid syringe pump 8 links to each other with capillary shower nozzle 10 in the gas collector 9 through pipeline.Heated at constant temperature cover 11 is wrapped in the outside of gas collector 9; Gas collector 9 is provided with the outlet of multicomponent low concentration calibrating gas.
The dynamic generating means of multicomponent light concentration gas that the present invention proposes can be divided into carrier gas system, gas injection system, liquid injection system and four parts of gas gathering system.Carrier gas system is made up of carrier gas source of the gas (high-pure helium or compressed air), flow controller and humidification jar; It is the pollutant of gas that gas injection system is used to take place under the normal temperature, like hydrogen sulfide, ammonia etc.Similar with carrier gas system, carrier gas system is made up of dusty gas source of the gas (gas bottle) and flow controller; It is the pollutant of liquid that liquid injection system is used to take place under the normal temperature, like indoor common most of VOC: toluene, benzene, xylenes, formaldehyde, acetaldehyde, acetone etc.The liquid syringe pump passes through multiple pollutant mixed solution in the controlled gas collector 9 of capillary shower nozzle 10 implantation temperatures; And evaporate into gas fast; Mix with the air-flow that carrier gas system and gas injection system are produced then; Carry pollutant by carrier gas again and flow out gas collector, thereby obtain the multicomponent low concentration calibrating gas of desired concn.
Can adopt capillary shower nozzle as shown in Figure 2 in apparatus of the present invention, an end diameter of capillary shower nozzle is bigger, and the diameter of the other end is less, and this just makes from the gases at high pressure of liquid peristaltic pump from the diameter of capillary shower nozzle than the small end ejection and be atomized.
Among the embodiment of apparatus of the present invention, first and second flow controllers, can use produce by Alicat Science company, model is the product of M-5SLPM-D; Liquid syringe pump wherein can use by Longer company produce, model is the product of LSP01-2A.
Below in conjunction with accompanying drawing, specify the course of work of gas-dynamic generating means of the present invention:
Carrier gas is flowed out from source of the gas 1 in the carrier gas system, through flow controller 2, is divided into two-way then; One the road flows into humidification jar 3; Add wet joint 4 through micropore tiny bubble takes place, and by-passing valve 5 is flow through as bypass gases in another road, last two-way air-flow collects in gas collector 9.This system be used to produce humidity range be 0～80% with range of flow be the carrier gas of 0.5～5L/min.Dusty gas flows out from source of the gas 6 in the gas injection system, through flow controller 7, flows in the gas collector 9.The normal temperature that this system is used to produce constant density is the pollutant of gaseous state down.In the liquid injection system; By liquid syringe pump 8 under the effect of capillary shower nozzle 10; Form with fine spray is injected gas collector 9 with the fluid contaminants of certain proportioning; Because gas collector 9 outerwrap heated at constant temperature covers (temperature is 65 ± 0.5 ℃ in the control gas collector), being sprayed at of being sprayed evaporates into gas rapidly under the high temperature action.
Liquid syringe pump in apparatus of the present invention can be changed in experimentation, thereby realized the generation according to experimental result rapid adjustment variable concentrations by control program control different liquid charge velocity able to programme at any time.Through changing different syringes, can realize that range of flow is the liquid injection rate of 0.01nL/min～0.1 μ L/min, when carrier gas flux was 1L/min, the generation concentration range was 0.01～20mg/m
3
Utilize gas-dynamic generating means of the present invention, can produce 0.01～20mg/m
3The multicomponent low concentration calibrating gas of concentration range comprises hydrogen sulfide, ammonia, CO, NO
2Deng the material that is gaseous state, and be the material of liquid under the normal temperature such as toluene, benzene, xylenes, formaldehyde, acetaldehyde, acetone under the normal temperature.
Apparatus of the present invention add wet joint through micropore, and humidity range can take place is 0～80%, and range of flow is the carrier gas of 0.5～5L/min.Said carrier gas can be high-purity helium or compressed air.The liquid syringe pump that apparatus of the present invention adopt, the liquid injection rate is 0.01nL/min～0.1 μ L/min, and by control program operation able to programme, can in experimentation, change at any time.The syringe specification that said liquid syringe pump is selected for use can be 1～50 μ L.This device is through using the capillary shower nozzle, and the liquid injection rate that makes 0.01nL/min～0.1 μ L/min is volatilization fast in 65 ± 0.5 ℃ the gas collector in temperature.
Claims (1)
1. the dynamic generating means of multicomponent light concentration gas is characterized in that this gas-dynamic mode device comprises: carrier gas source of the gas, dusty gas source of the gas, humidification jar, liquid syringe pump, gas collector, heated at constant temperature cover, micropore head, capillary shower nozzle and by-passing valve; Described carrier gas source of the gas outlet links to each other with the humidification jar through pipeline, and the pipeline that the carrier gas source of the gas links to each other with the humidification jar is provided with first flow controller and by-passing valve, and the humidification jar is connected in parallel on the entrance point and the port of export of by-passing valve; Described micropore head places the humidification jar, and the micropore head links to each other with the port of export of first flow controller and the entrance point of by-passing valve through pipeline simultaneously; The port of export of by-passing valve links to each other with gas collector; Described dusty gas source of the gas links to each other with gas collector through pipeline, and the pipeline that the dusty gas source of the gas links to each other with gas collector is provided with second flow controller; Described capillary shower nozzle places gas collector; Described liquid syringe pump links to each other with capillary shower nozzle in the gas collector through pipeline; Described heated at constant temperature cover is wrapped in the outside of gas collector; Gas collector is provided with the outlet of multicomponent low concentration calibrating gas.
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| CN201210073801.1A CN102614803B (en) | 2012-03-20 | 2012-03-20 | Dynamic generator for multicomponent low-concentration standard gas |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390831A (en) * | 2014-12-16 | 2015-03-04 | 山东大学 | Method and device for preparing standard methacrylic acid gas sample |
| CN105536587A (en) * | 2015-12-25 | 2016-05-04 | 南京信息工程大学 | Standard gas dynamic mixing instrument |
| CN105664510A (en) * | 2016-02-26 | 2016-06-15 | 天津大学建筑设计研究院 | Evaporation chamber of gaseous organic pollutant generator |
| CN106237877A (en) * | 2016-09-28 | 2016-12-21 | 北京明尼特环保设备有限公司 | A kind of dynamically gas-liquid mixed distributing instrument |
| CN107228923A (en) * | 2017-06-27 | 2017-10-03 | 中国科学院化学研究所 | A kind of preparation method of standard gaseous nitrous acid and generation system |
| CN108518747A (en) * | 2018-06-21 | 2018-09-11 | 天津大学 | A kind of mixing pernicious gas removal experimental system |
| CN108593848A (en) * | 2018-04-25 | 2018-09-28 | 清华大学深圳研究生院 | A kind of normal concentration sample gas generation device and production method |
| CN110389092A (en) * | 2018-04-19 | 2019-10-29 | 北京凯隆分析仪器有限公司 | Micro dust generation, dust measurement instrument method for testing performance and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060254656A1 (en) * | 2005-05-12 | 2006-11-16 | Malczewski Mark L | System and apparatus for producing primary standard gas mixtures |
| CN2929723Y (en) * | 2006-07-27 | 2007-08-01 | 中国计量科学研究院 | Dynamic gas distributor for multiple component expansion tube standard gases |
| CN101357305A (en) * | 2008-09-02 | 2009-02-04 | 浙江大学 | Preparation device and method of low-concentration gas of certain humidity |
| CN102258958A (en) * | 2011-05-27 | 2011-11-30 | 中国计量科学研究院 | Dynamic gas distributing system for standard gas |
-
2012
- 2012-03-20 CN CN201210073801.1A patent/CN102614803B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060254656A1 (en) * | 2005-05-12 | 2006-11-16 | Malczewski Mark L | System and apparatus for producing primary standard gas mixtures |
| CN2929723Y (en) * | 2006-07-27 | 2007-08-01 | 中国计量科学研究院 | Dynamic gas distributor for multiple component expansion tube standard gases |
| CN101357305A (en) * | 2008-09-02 | 2009-02-04 | 浙江大学 | Preparation device and method of low-concentration gas of certain humidity |
| CN102258958A (en) * | 2011-05-27 | 2011-11-30 | 中国计量科学研究院 | Dynamic gas distributing system for standard gas |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390831A (en) * | 2014-12-16 | 2015-03-04 | 山东大学 | Method and device for preparing standard methacrylic acid gas sample |
| CN105536587A (en) * | 2015-12-25 | 2016-05-04 | 南京信息工程大学 | Standard gas dynamic mixing instrument |
| CN105664510A (en) * | 2016-02-26 | 2016-06-15 | 天津大学建筑设计研究院 | Evaporation chamber of gaseous organic pollutant generator |
| CN106237877A (en) * | 2016-09-28 | 2016-12-21 | 北京明尼特环保设备有限公司 | A kind of dynamically gas-liquid mixed distributing instrument |
| CN106237877B (en) * | 2016-09-28 | 2019-05-17 | 北京明尼特环保设备有限公司 | A kind of dynamic gas-liquid mixed distributing instrument |
| CN107228923A (en) * | 2017-06-27 | 2017-10-03 | 中国科学院化学研究所 | A kind of preparation method of standard gaseous nitrous acid and generation system |
| CN107228923B (en) * | 2017-06-27 | 2024-04-05 | 中国科学院化学研究所 | Preparation method and generation system of standard gaseous nitrous acid |
| CN110389092A (en) * | 2018-04-19 | 2019-10-29 | 北京凯隆分析仪器有限公司 | Micro dust generation, dust measurement instrument method for testing performance and device |
| CN108593848A (en) * | 2018-04-25 | 2018-09-28 | 清华大学深圳研究生院 | A kind of normal concentration sample gas generation device and production method |
| CN108518747A (en) * | 2018-06-21 | 2018-09-11 | 天津大学 | A kind of mixing pernicious gas removal experimental system |
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| CN102614803B (en) | 2014-01-29 |
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