CN111450718A - Full-automatic preparation system and method for multi-component volatile organic compound gas - Google Patents
Full-automatic preparation system and method for multi-component volatile organic compound gas Download PDFInfo
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- CN111450718A CN111450718A CN202010376099.0A CN202010376099A CN111450718A CN 111450718 A CN111450718 A CN 111450718A CN 202010376099 A CN202010376099 A CN 202010376099A CN 111450718 A CN111450718 A CN 111450718A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/12—Mixing gases with gases with vaporisation of a liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2111—Flow rate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2113—Pressure
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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
- G01N1/24—Suction devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/23—Mixing of laboratory samples e.g. in preparation of analysing or testing properties of materials
Abstract
The invention discloses a full-automatic preparation system and a full-automatic preparation method for multi-component volatile organic gas, wherein the system comprises a diluent gas storage bottle, a flow meter, a gasification chamber, a mixing chamber, a booster pump and a mixed gas storage bottle which are sequentially connected, wherein the gasification chamber is communicated with a reagent gating sample injector which is communicated with a plurality of component solution bottles; and the flowmeter and the reagent gating sample injector are electrically connected with the comprehensive control platform. The system utilizes the comprehensive control platform to inject each component into the gasification chamber according to the calculation result, so as to realize the automatic preparation of the multi-component volatile organic compound gas, the whole process does not need manual participation, the distribution ratio error of each component is small, and the safety coefficient of the gas making process is high.
Description
Technical Field
The invention relates to the field of volatile gas preparation, in particular to a full-automatic preparation system and method for multi-component volatile organic compound gas.
Background
Volatile organic compounds, commonly denoted as VOCs, are various organic compounds having a boiling point of 50 ℃ to 260 ℃ at ambient temperature, according to the definition of the World Health Organization (WHO). In China, VOCs refer to organic compounds with saturated vapor pressure of more than 70Pa at normal temperature and boiling point of below 260 ℃ at normal pressure, or all organic compounds with vapor pressure of more than or equal to 10Pa and volatility at 20 ℃.
Volatile organic compounds are generally classified into non-methane hydrocarbons (NMHCs), oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, sulfur-containing organic compounds, and the like. VOCs participate in the formation of ozone and secondary aerosols in the atmospheric environment, which contribute significantly to regional atmospheric ozone pollution, PM2.5 pollution. Most VOCs have unpleasant special odor and have toxic, irritant, teratogenic and carcinogenic effects, and particularly benzene, toluene, formaldehyde and the like cause great harm to human health. VOCs are important precursors causing urban dust haze and photochemical smog and mainly come from the processes of coal chemical industry, petrochemical industry, fuel coating manufacturing, solvent manufacturing and using and the like.
At present, volatile organic compound mixed gas is prepared by mainly adopting a micro-injector to absorb a certain amount of organic compounds and then manually injecting the organic compounds into a gas cylinder. The method is manually operated, and the processes of reading in the sample, volatilization of organic matters and the like are easily caused to cause gas distribution deviation; and if the multi-component mixed gas is prepared, large errors are easily introduced in the preparation of the mixed gas due to the operation processes of manually extracting samples for many times and the like.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a full-automatic preparation system and a full-automatic preparation method for multi-component volatile organic gas.
The full-automatic preparation system of the multi-component volatile organic compound gas comprises a diluent gas storage bottle, a flow meter, a gasification chamber, a mixing chamber, a booster pump and a mixed gas storage bottle which are sequentially connected, wherein the gasification chamber is communicated with a reagent gating sample injector which is communicated with a plurality of component solution bottles; and the flowmeter and the reagent gating sample injector are electrically connected with the comprehensive control platform.
Preferably, the dilution gas cylinder and the mixture gas cylinder are each provided with an electromagnetic valve.
Preferably, an air inlet pressure gauge is arranged between the dilution gas storage cylinder and the flowmeter.
Preferably, an air outlet pressure gauge is arranged between the booster pump and the mixed gas storage cylinder.
Preferably, a left-handed component or a right-handed component is installed in the mixing chamber.
The invention also discloses a full-automatic preparation method by utilizing the multi-component volatile organic compound gas, which comprises the following steps:
step 1, blowing the whole system pipeline by using diluent gas, and vacuumizing a mixed gas storage cylinder;
step 4, calculating according to the parameters set in the step 2, controlling a reagent gating sample injector according to the calculated result, respectively injecting the components into a gasification chamber according to the calculated result, carrying mixed gas in the gasification chamber into a mixing chamber, and compressing the mixed gas to enter a gas storage bottle;
and 5, blowing the whole pipeline by using the raw material gas.
Preferably, the parameters of the components in step 2 include gasification temperature, diluent gas flow, injected quantity of the component liquid, density of the component liquid, molecular weight and liquid concentration.
Preferably, the calculation process in step 3 and step 4 is as follows: the concentration of the prepared gas mixture is calculated according to the concentration of the component liquid, the injection amount, the density, the molecular weight, the gas molar volume and the flow of the diluent gas.
Preferably, the component gas in the step 4 is gasified at high temperature and carried into the mixing chamber by the dilution gas.
Preferably, the purging time in the step 5 is 3-5 minutes.
The invention has the beneficial effects that:
the multi-component gas can be automatically configured by setting parameters in the comprehensive control platform, and consistency adjustment is performed according to gasification temperatures of different components; and the reagent gating sample injector and the independent program control are utilized to realize multi-component selection and concentration setting, and the automatic completion is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure, 1-a dilution gas cylinder, 2-a first electromagnetic valve, 3-an air inlet pressure gauge, 4-a flow meter, 5-a gasification chamber, 6-a reagent gating sample injector, 7-a comprehensive control platform, 8-a component solution bottle, 9-a mixing chamber, 10-a booster pump, 11-an air outlet pressure gauge, 12-a second electromagnetic valve and 13-a mixed gas cylinder.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention discloses a full-automatic preparation system of multi-component volatile organic compound gas as shown in figure 1, which comprises a gasification chamber 5, wherein the gasification chamber is communicated with a diluent gas inlet passage and a component gas inlet passage, the diluent gas inlet passage comprises a diluent gas storage cylinder 1, a gas inlet pressure gauge 3 and a flow meter 4 which are sequentially connected, and the flow meter is communicated with the gasification chamber 5. The component gas intake path includes a reagent-gated injector 6 and a plurality of component solution bottles 8; the reagent gating sample injector is used for conveying the component gas in the component solution bottle 8 to the gasification chamber 5 according to a preset proportion. The gasification chamber 5 is sequentially communicated with a mixing chamber 9, a booster pump 10 and a mixed gas storage cylinder 13, and an air outlet pressure gauge 11 is arranged between the booster pump and the mixed gas storage cylinder.
The function of the vaporization chamber is to instantaneously vaporize the liquid component into steam, and the vaporization chamber is actually a metal heater. The total volume of the channel and the volume in the vaporizer should be as small as possible to prevent sample diffusion and reduce dead volume.
The effect of mixing chamber is in order to realize gaseous mixing in dynamic mixing process, in order to realize the mixing, installs the left rotation of a certain amount/dextrorotation part in the mixing chamber, and crisscross realization mixing through this kind of baffle of multiunit.
As a preferred embodiment, in one embodiment, the dilution gas cylinder and the mixture gas cylinder are each provided with a solenoid valve.
Specifically, a first solenoid valve is provided in the diluent gas cylinder, and a second solenoid valve is provided in the mixture gas cylinder.
As a preferred embodiment, in one embodiment, the integrated control platform is composed of a display screen, a keyboard, a communication transmission module, a logic control module, and a data analysis processing module, and mainly completes functions such as parameter setting, data receiving and analysis processing, logic control, command transmission, and the like.
Specifically, parameter setting (such as component name, concentration content, exclusive characteristic of component gas and the like) of gas to be configured is completed through a keyboard, a data analysis processing module calculates according to the set parameters to obtain executable data, different executable data and commands are sent to execution devices such as a flowmeter, a sample injector, a gasification chamber and the like through a logic control module by utilizing a communication transmission module, the form of the real-time state data of the execution devices is reported back to the logic control module and the data analysis processing module, relevant data are displayed on a display screen in real time, and the configuration state is judged.
The invention also discloses a full-automatic preparation method by utilizing the multi-component volatile organic compound gas, which comprises the following steps:
step 1, blowing the whole system pipeline by using raw material gas, and vacuumizing a mixed gas storage cylinder;
step 4, calculating according to the parameters set in the step 2, controlling a reagent gating sample injector according to the calculated result to inject all the components into a gasification chamber respectively according to the calculated result, carrying the components into a mixing chamber by carrier gas, and compressing the components into a gas storage bottle;
and 5, blowing the whole pipeline for 3-5 minutes by using the raw material gas.
The reagent gating sample injector comprises a sample injection arm, a volume-adjustable sample injector, a sample disc, a driving motor, hole site identification and the like. Loading a capacity-adjustable sample injector on a sample injection arm, wherein the capacity-adjustable sample injector is driven by a stepping motor; the circular sample disk is provided with a reagent placing hole site array on a certain radius by taking the circle center as a rotating shaft; firstly, naming different hole sites on a comprehensive control platform, linking with attribute information of different reagents, and corresponding to each other one by one and having uniqueness and exclusivity; according to the component names arranged on the comprehensive control platform, the sample plate rotates to the corresponding hole sites, the sample injector determines the amount of the absorbed reagent according to the set concentration, and after the absorption is finished, the sample injection arm rotates to a specific position to inject the reagent in the sample injector into the gasification chamber.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the modifications or substitutions within the scope of the present invention, and shall be covered by the scope of the present invention.
Claims (10)
1. The full-automatic preparation system of the multi-component volatile organic gas is characterized by comprising a dilution gas storage bottle, a flow meter, a gasification chamber, a mixing chamber, a booster pump and a mixed gas storage bottle which are sequentially connected, wherein the gasification chamber is communicated with a reagent gating sample injector which is communicated with a plurality of component solution bottles; and the flowmeter and the reagent gating sample injector are electrically connected with the comprehensive control platform.
2. The fully automated multi-component voc gas production system of claim 1 wherein the diluent gas cylinder and the mixture gas cylinder are each configured with solenoid valves.
3. The fully automated multi-component volatile organic gas production system according to claim 1, wherein an intake pressure gauge is provided between the dilution gas cylinder and the flow meter.
4. The system of claim 1, wherein a gas pressure gauge is disposed between the booster pump and the gas mixture cylinder.
5. The fully automated multi-component volatile organic gas production system of claim 1, wherein a left-handed component or a right-handed component is mounted within the mixing chamber.
6. The full-automatic preparation method by utilizing the multi-component volatile organic gas is characterized by comprising the following steps of:
step 1, blowing the whole system pipeline by using diluent gas, and vacuumizing a mixed gas storage cylinder;
step 2, setting parameters of each component in the comprehensive control platform;
step 3, calculating according to the parameters set in the step 2, and adjusting the flow meter according to the calculated result;
step 4, calculating according to the parameters set in the step 2, controlling a reagent gating sample injector according to the calculated result, respectively injecting the components into a gasification chamber according to the calculated result, carrying mixed gas in the gasification chamber into a mixing chamber, and compressing the mixed gas to enter a gas storage bottle;
and 5, blowing the whole pipeline by using the raw material gas.
7. The method according to claim 6, wherein the parameters of the components in step 2 include gasification temperature, diluent gas flow, injection amount of the component liquid, density of the component liquid, molecular weight, and liquid concentration.
8. The method according to claim 6, wherein the calculation process in step 3 and step 4 is as follows: the concentration of the prepared gas mixture is calculated according to the concentration of the component liquid, the injection amount, the density, the molecular weight, the gas molar volume and the flow of the diluent gas.
9. The method according to claim 6, wherein the component gas in step 4 is gasified at high temperature and carried by the diluent gas into the mixing chamber.
10. The full-automatic preparation method by using multi-component volatile organic compound gas according to claim 6, wherein the purging time in the step 5 is 3 to 5 minutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010376099.0A CN111450718A (en) | 2020-05-07 | 2020-05-07 | Full-automatic preparation system and method for multi-component volatile organic compound gas |
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| CN202010376099.0A CN111450718A (en) | 2020-05-07 | 2020-05-07 | Full-automatic preparation system and method for multi-component volatile organic compound gas |
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Citations (7)
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| US5394730A (en) * | 1993-01-29 | 1995-03-07 | Eli Lily And Company | Method and apparatus for generating a vapor/gas mixture, and uses therefor |
| CN2499819Y (en) * | 2001-09-18 | 2002-07-10 | 中国人民解放军总装备部后勤部军事医学研究所 | Preparing device for dynamic standard gas sample |
| KR100656415B1 (en) * | 2005-12-30 | 2006-12-11 | 한국표준과학연구원 | Liquid injection device for the preparation of standard gases |
| CN105498640A (en) * | 2015-11-27 | 2016-04-20 | 李圣彭 | Multifunctional standard gas generator |
| CN205176047U (en) * | 2015-12-04 | 2016-04-20 | 苏州北裕环保仪器制造有限公司 | Liquid phase autosampler |
| CN107486046A (en) * | 2017-08-31 | 2017-12-19 | 中国计量科学研究院 | High-enriched organics normal mixture body generating means and its application method |
| CN212188622U (en) * | 2020-05-07 | 2020-12-22 | 山东非金属材料研究所 | Full-automatic preparation system for multi-component volatile organic compound gas |
-
2020
- 2020-05-07 CN CN202010376099.0A patent/CN111450718A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5394730A (en) * | 1993-01-29 | 1995-03-07 | Eli Lily And Company | Method and apparatus for generating a vapor/gas mixture, and uses therefor |
| CN2499819Y (en) * | 2001-09-18 | 2002-07-10 | 中国人民解放军总装备部后勤部军事医学研究所 | Preparing device for dynamic standard gas sample |
| KR100656415B1 (en) * | 2005-12-30 | 2006-12-11 | 한국표준과학연구원 | Liquid injection device for the preparation of standard gases |
| CN105498640A (en) * | 2015-11-27 | 2016-04-20 | 李圣彭 | Multifunctional standard gas generator |
| CN205176047U (en) * | 2015-12-04 | 2016-04-20 | 苏州北裕环保仪器制造有限公司 | Liquid phase autosampler |
| CN107486046A (en) * | 2017-08-31 | 2017-12-19 | 中国计量科学研究院 | High-enriched organics normal mixture body generating means and its application method |
| CN212188622U (en) * | 2020-05-07 | 2020-12-22 | 山东非金属材料研究所 | Full-automatic preparation system for multi-component volatile organic compound gas |
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