CN104587686B - The concentration air distributing device of organic exhaust gas and air distributing method - Google Patents
The concentration air distributing device of organic exhaust gas and air distributing method Download PDFInfo
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- CN104587686B CN104587686B CN201410855114.4A CN201410855114A CN104587686B CN 104587686 B CN104587686 B CN 104587686B CN 201410855114 A CN201410855114 A CN 201410855114A CN 104587686 B CN104587686 B CN 104587686B
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- air distributing
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Abstract
The invention discloses concentration air distributing device and the air distributing method of a kind of organic exhaust gas, including: air chest, solvent compartment and heating chamber that left and right is arranged it is provided with in it, dosing pump it is provided with in solvent compartment, for solvent is pumped in heating chamber, being provided with electric heater in heating chamber, heating chamber is provided with escape pipe, and escape pipe is provided with concentration detection apparatus；Frequency conversion fan, its air outlet stretches in heating chamber；PLC, adjusts the rotating speed of dosing pump, the temperature of electric heater and the air quantity of frequency conversion fan according to the testing result of concentration detection apparatus.The present invention utilizes PLC system to control the temperature of Intelligent heater, instead of the mode of traditional bubbling heating, volume is little, quick heating, avoid the great fluctuation process excessively of the concentration of high boiling organic solvent under the heating state of constant temperature waters, overcome that configuration is narrow-minded, be not suitable for the problem of seriality lab scale or pilot plant test, and according to demand can be with the different mass concentration curve of self-calibration, highly versatile.
Description
Technical field
The present invention relates to air distributing device, be specifically related to concentration air distributing device and the air distributing method of organic exhaust gas.
Background technology
Air distributing device is primarily directed under laboratory and various environment required simulation gas componant.Arrange the device of mixing output voluntarily according to ratio, essential core parts are mass flow controller, utilize its high accuracy, feature of high accuracy, accurately control the input quantity of each gas constituent, export via after the mixed gas chamber of Specialty Design and production.
Due to existing organic waste gas treatment equipment, not all organic exhaust gas has corresponding Engineering Projects, and before engineering design, it is necessary to there is sufficient lab scale test data to do foundation or pilot plant test data do foundation.Existing the heating of constant temperature waters bubbling, experimental apparatus air distributing device is utilized to have corresponding shortcoming, and it is currently used for the air distributing device of lab scale or pilot plant test, when configuring certain density organic exhaust gas in process of the test, often occur that fluctuation of concentration is big or the problem of distribution time length, the biggest drawback is had in practical application, owing to distribution is unstable, and cause the with a low credibility of test data.
As can be seen here, current air distributing device exists during distribution that fluctuation of concentration is big, the problem of distribution time length.
Summary of the invention
The technical problem to be solved is that current air distributing device exists during distribution that fluctuation of concentration is big, the problem of distribution time length.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention there is provided the concentration air distributing device of a kind of organic exhaust gas, including:
Air chest, is provided with solvent compartment and heating chamber that left and right is arranged, is provided with dosing pump in described solvent compartment in it, for solvent being pumped in described heating chamber, being provided with electric heater in described heating chamber, described heating chamber is provided with escape pipe, and described escape pipe is provided with concentration detection apparatus；
Frequency conversion fan, its air outlet stretches in described heating chamber；
PLC, adjusts the rotating speed of described dosing pump, the temperature of described electric heater and the air quantity of described frequency conversion fan according to the testing result of concentration detection apparatus.
In the concentration air distributing device of above-mentioned organic exhaust gas, the end face of described solvent compartment is provided with fluid infusion mouth.
In the concentration air distributing device of above-mentioned organic exhaust gas, the lateral wall of described solvent compartment is provided with liquidometer.
In the concentration air distributing device of above-mentioned organic exhaust gas, described liquidometer is provided with screw thread ball valve with the connection pipeline of described solvent compartment.
In the concentration air distributing device of above-mentioned organic exhaust gas, described escape pipe is provided with Concentration Testing mouth, and described concentration detection apparatus is arranged on described Concentration Testing mouth by butterfly valve.
Present invention also offers the air distributing method of a kind of organic exhaust gas, comprise the following steps:
Utilize water that the output of dosing pump is demarcated, obtain the water quality-time calibrating curve of dosing pump output；
Utilize organic solvent that the output of dosing pump is demarcated, obtain making the output organic solvent mass-time calibration curve of dosing pump；
Start electric heater and be heated to more than organic solvent boiling point, regulating air quantity and the revolution speed of metering of frequency conversion fan according to required organic exhaust gas concentration and organic solvent calibration curve；
Testing result according to concentration detection apparatus adjusts the rotating speed of dosing pump, the temperature of electric heater and the air quantity of frequency conversion fan, it is thus achieved that satisfactory distribution.
In the air distributing method of above-mentioned organic exhaust gas, utilize water that the output of dosing pump is carried out scaling method as follows: the water quality exported with the dosing pump that 3 turns/min, 5 turns/min, 10 turns/min and 15 turns/min are corresponding successively, make the mass concentration standard curve of water outlet, the most each sample point repeated sampling at least 5 times, and Select Error sampled data in the range of 5%-10%.
In the air distributing method of above-mentioned organic exhaust gas, sample with microsampling pin, by the concentration of gas chromatograph detection distribution.
The present invention utilizes PLC system to control the temperature of electric heater, instead of the mode of traditional bubbling heating, volume is little, quick heating, solvent volatilization is uniformly, it is to avoid under the heating state of constant temperature waters the concentration of high boiling organic solvent cross great fluctuation process, overcome the problem that configuration is narrow-minded, be not suitable for seriality lab scale or pilot plant test, and according to demand can be with the different mass concentration curve of self-calibration, highly versatile.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
The invention provides concentration air distributing device and the air distributing method of a kind of organic exhaust gas, during solvent heating, concentration volatilization is uniformly, highly versatile.Below in conjunction with specific embodiment and Figure of description, the present invention is described in detail.
As shown in Figure 1, the invention provides the concentration air distributing device of a kind of organic exhaust gas, including air chest, frequency conversion fan 6 and PLC, in air chest, be provided with solvent compartment and heating chamber that left and right is arranged, the lower inside of solvent compartment is provided with dosing pump 1, for being pumped in heating chamber by solvent.Being provided with electric heater 2 in heating chamber, the organic solvent in solvent compartment gasifies in being delivered to heating chamber by dosing pump 1.The air outlet of frequency conversion fan 6 stretches into the inner upper of heating chamber, and heating chamber is provided with escape pipe, discharges from escape pipe with can making organic exhaust gas even density and carries out Concentration Testing, subsequently into carrying out absorbing process in adsorption tanks.
Dosing pump 1, electric heater 2 and frequency conversion fan 6 are adjusted the rotating speed of dosing pump 1, the temperature of electric heater 2 and the air quantity of frequency conversion fan 6 by PLC system control, PLC according to the testing result of concentration detection apparatus.
The end face of solvent compartment is provided with fluid infusion mouth 4, and the lateral wall of solvent compartment is provided with liquidometer 3, and liquidometer 3 is provided with screw thread ball valve 10 with the connection pipeline of solvent compartment, it is ensured that the liquid level of operator's energy Real Time Observation solvent compartment, in order to add solvent in time.
Escape pipe is provided with Concentration Testing mouth 5, and concentration detection apparatus is arranged on Concentration Testing mouth 5 by butterfly valve, and Concentration Testing mouth 5 can connect sampler bag, samples with microsampling pin, carries out Concentration Testing by gas chromatograph.
Present invention also offers the air distributing method of a kind of organic exhaust gas, comprise the following steps:
Utilize water that the output of dosing pump is demarcated, obtain the water quality-time calibrating curve of dosing pump output；
Utilize organic solvent that the output of dosing pump is demarcated, obtain making the output organic solvent-time calibrating curve of dosing pump；
Start electric heater and be heated to more than organic solvent boiling point, regulating air quantity of variable-frequency fan and dosing pump rotating speed according to required organic exhaust gas concentration and organic solvent calibration curve；
Testing result according to concentration detection apparatus adjusts the rotating speed of dosing pump, the temperature of electric heater and the air quantity of frequency conversion fan, it is thus achieved that satisfactory distribution.
Further, utilize water that the output of dosing pump is carried out scaling method as follows: the water quality exported with the dosing pump that 3 turns/min, 5 turns/min, 10 turns/min and 15 turns/min are corresponding successively, make the mass concentration standard curve of water outlet, the most each sample point repeated sampling at least 5 times, and Select Error sampled data in the range of 5%-10%.
Further, sample with microsampling pin, by the concentration of gas chromatograph detection distribution.
It is below the technical operation flow of concentration air distributing device:
Before a whole set of assay device runs, the temperature of electric heater 2 is set so that it is higher than organic solvent boiling point 15-20 DEG C, arrange the rotating speed of dosing pump 1 simultaneously.After electric heater 2 temperature stabilization, distribution Concentration Testing mouth 5 is opened, open frequency conversion fan 6 and the power supply of dosing pump 1, after stablizing a few minutes, just can be sampled by distribution Concentration Testing mouth 5, Concentration Testing is carried out with gas chromatograph, the rotating speed of dosing pump 1 is adjusted according to testing result, the temperature of electric heater 2 and the air quantity of frequency conversion fan 6, obtain satisfactory distribution, at least 5 detection samples are just stable for distribution concentration in the range of error of 10%, the most just the exhaust-valve 8 of adsorption tanks 9 and absorption valve 7 can be opened, simultaneously close off distribution Concentration Testing mouth 5, start the absorption of normal organic solvent.The concentration of distribution can also be detected at any time, it is ensured that the stability of concentration in adsorption process.
The present invention utilizes PLC system to control the temperature of electric heater, instead of the mode of traditional bubbling heating, volume is little, quick heating, solvent volatilization is uniformly, it is to avoid under the heating state of constant temperature waters the concentration of high boiling organic solvent cross great fluctuation process, overcome the problem that configuration is narrow-minded, be not suitable for seriality lab scale or pilot plant test, and according to demand can be with the different mass concentration curve of self-calibration, highly versatile.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structure change made under the enlightenment of the present invention, and every have same or like technical scheme, within each falling within protection scope of the present invention with the present invention.
Claims (8)
1. the concentration air distributing device of organic exhaust gas, it is characterised in that including:
Air chest, is provided with solvent compartment and heating chamber that left and right is arranged, is provided with dosing pump in described solvent compartment in it, for solvent being pumped in described heating chamber, being provided with electric heater in described heating chamber, described heating chamber is provided with escape pipe, and described escape pipe is provided with concentration detection apparatus；
Frequency conversion fan, its air outlet stretches in described heating chamber；
PLC, adjusts the rotating speed of described dosing pump, the temperature of described electric heater and the air quantity of described frequency conversion fan according to the testing result of concentration detection apparatus.
2. the concentration air distributing device of organic exhaust gas as claimed in claim 1, it is characterised in that the end face of described solvent compartment is provided with fluid infusion mouth.
3. the concentration air distributing device of organic exhaust gas as claimed in claim 1, it is characterised in that the lateral wall of described solvent compartment is provided with liquidometer.
4. the concentration air distributing device of organic exhaust gas as claimed in claim 3, it is characterised in that described liquidometer is provided with screw thread ball valve with the connection pipeline of described solvent compartment.
5. the concentration air distributing device of organic exhaust gas as claimed in claim 1, it is characterised in that described escape pipe is provided with Concentration Testing mouth, and described concentration detection apparatus is arranged on described Concentration Testing mouth by butterfly valve.
6. the method utilizing the concentration air distributing device of the organic exhaust gas described in claim 1 to carry out distribution, comprises the following steps:
Utilize water that the output of dosing pump is demarcated, obtain the water quality-time calibrating curve of dosing pump output；
Utilize organic solvent that the output of dosing pump is demarcated, obtain the output organic solvent mass-time calibration curve of dosing pump；
Start electric heater and be heated to more than organic solvent boiling point, regulating air quantity and the rotating speed of dosing pump of frequency conversion fan according to required organic exhaust gas concentration and organic solvent calibration curve；
Testing result according to concentration detection apparatus adjusts the rotating speed of dosing pump, the temperature of electric heater and the air quantity of frequency conversion fan, it is thus achieved that satisfactory distribution.
Utilize the method that the concentration air distributing device of organic exhaust gas carries out distribution the most as claimed in claim 6, it is characterised in that:
Utilize water that the output of dosing pump is carried out scaling method as follows: the water quality exported with the dosing pump that 3 turns/min, 5 turns/min, 10 turns/min and 15 turns/min are corresponding successively, make the mass-time calibration curve of water outlet, the most each sample point repeated sampling at least 5 times, and Select Error sampled data in the range of 5%-10%.
Utilize the method that the concentration air distributing device of organic exhaust gas carries out distribution the most as claimed in claim 6, it is characterised in that:
Sample with microsampling pin, by the concentration of gas chromatograph detection distribution.
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| CN201410855114.4A CN104587686B (en) | 2014-12-31 | 2014-12-31 | The concentration air distributing device of organic exhaust gas and air distributing method |
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| CN106018622A (en) * | 2016-07-12 | 2016-10-12 | 中国石油化工股份有限公司 | Testing device and method for analyzing performance of organic gas treating system |
| CN114471373A (en) * | 2021-12-30 | 2022-05-13 | 南京理工大学 | High-concentration CO stable and constant fuming device and stable and constant fuming control method |
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| US5514336A (en) * | 1993-03-09 | 1996-05-07 | University Of South Carolina | Automated evaporator for chemical analyses |
| CN102042484A (en) * | 2009-10-16 | 2011-05-04 | 北京均方理化科技研究所 | Normal-pressure and room-temperature dynamic gas distribution system and gas distribution method thereof |
| CN102062707B (en) * | 2009-11-13 | 2012-11-21 | 立邦涂料（中国）有限公司 | Method and device for measuring volatile harmful gas decomposing capability |
| CN201945892U (en) * | 2010-12-10 | 2011-08-24 | 中国人民解放军军事医学科学院 | Gas blending device |
| CN102513003B (en) * | 2011-12-01 | 2014-07-23 | 北京雪迪龙科技股份有限公司 | Standard gas distribution meter |
| CN203329640U (en) * | 2013-06-27 | 2013-12-11 | 江苏物联网研究发展中心 | Standard gas mixing device for gas testing system |
| CN203745402U (en) * | 2014-01-17 | 2014-07-30 | 武汉都市环保工程技术股份有限公司 | Experimental testing system for treating organic waste gas |
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Inventor after: Lv Changgang Inventor before: Liu Jing Inventor before: Wang Ruiqiang Inventor before: Lv Changgang Inventor before: Tian Zhaolong Inventor before: Lv Tongchun Inventor before: Sun Liping |