CN103439364A - Testing device for harmful gas generated by combustion of high molecular material, and testing method - Google Patents
Testing device for harmful gas generated by combustion of high molecular material, and testing method Download PDFInfo
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- CN103439364A CN103439364A CN2013103394335A CN201310339433A CN103439364A CN 103439364 A CN103439364 A CN 103439364A CN 2013103394335 A CN2013103394335 A CN 2013103394335A CN 201310339433 A CN201310339433 A CN 201310339433A CN 103439364 A CN103439364 A CN 103439364A
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Abstract
The invention relates to the technical field of high molecular material testing, in particular to a testing device for harmful gas generated by combustion of a high molecular material. The testing device comprises a tapered heater, an air collecting cover, a fan, a flow meter, a cooling tube, a filter, an oxygen testing instrument, a hydrogen chloride analysis device, a hydrogen cyanide analysis device, a carbon monoxide analysis device and a carbon dioxide analysis device. The tapered heater heats the high molecular material by adjusting different power, and a smog concentration is analyzed during the combustion. According to the testing device, the harmful gas is detected quantitatively during the combustion of the high molecular material; a testing analysis technology of carbon monoxide, carbon dioxide, hydrogen chloride and hydrogen cyanide generated by the combustion is achieved; and the testing device is simple and novel in structure, low in manufacturing cost and convenient, safe and reliable to use.
Description
[technical field]
The present invention relates to the macromolecular material technical field of measurement and test, specifically a kind of macromolecular material burning produces proving installation and the test method of harmful gas.
[background technology]
Macromolecular material is increasingly extensive in the application of household electrical appliance, building, automobile, aviation and other various fields at present, makes macromolecular material prevent from the problem of fire being faced with huge pressure.Macromolecular material belongs to combustible material, contain the elements such as nitrogen, sulphur, chlorine due to material itself, so in the process that adds thermal decomposition, burning, can discharge and measure greatly the harmful gases such as carbon monoxide, hydrogen chloride and hydrogen cyanide, and these harmful gases are only key factor fatal in fire process.
The flue gas more complicated that the macromolecular material combustion process produces, be not easy quantitative detecting analysis, at present in the analytical approach for the harmful gas produced in the macromolecular material combustion process, most employing small white mouses carry out toxicological experiment, the toxicity that the burning of judgement macromolecular material produces, can't therefore be difficult to improve targetedly the burning performance of macromolecular material to the analysis of the composition qualitative, quantitative of flue gas, reduce the gassed harm of combustion process.
[summary of the invention]
The object of the invention is to according to the chemical analysis principle, provide a kind of quantitative test macromolecular material burning simple in structure, easy to use to produce proving installation and the test method of harmful gas, realize the quantitative detection of carbon monoxide, carbon dioxide, hydrogen chloride and hydrogen cyanide harmful gas to producing in combustion process.
For achieving the above object, design the proving installation that a kind of macromolecular material burning produces harmful gas, comprise the taper well heater, wind-collecting cover, blower fan, flowmeter, cooling tube, filtrator, oxygen analyser, the hydrogen chloride analytical equipment, the hydrogen cyanide analytical equipment, carbon monoxide analytical equipment and carboloy dioxide analysis device, it is characterized in that this device connects into inverted L-shaped by the first pipeline and second pipe, the junction inner chamber is equipped with blower fan, on the first pipeline, first interface and the second interface inner chamber are added with drying agent, between the second interface and the 3rd interface, the top of section from left to right is provided with hydrogen chloride successively, the hydrogen cyanide analytical equipment, below is provided with temperature, hygrometer, the 3rd interface and the 4th interface inner chamber are provided with filtrator, pipeline below between the 4th interface and the 5th interface is provided with the dust concentration proving installation, dust concentration proving installation right side connects wind-collecting cover, wind-collecting cover inside is provided with the taper well heater, between the 6th interface and the 7th interface, section is provided with cooling tube, between the 7th interface and the 8th interface, section is provided with flowmeter, the 8th left side, interface below is provided with carbon dioxide, carbon monoxide analytical equipment from top to bottom successively, and right side is provided with oxygen analyser.
Described taper well heater consists of several heating wire, tapered radiation heating, and heating power reaches 0 ~ 50kW/m
2; The harmful gas that described carbon monoxide analytical equipment quantitatively detects is carbon monoxide, and test specification is 0 ~ 1000ppm; The harmful gas that described carboloy dioxide analysis device quantitatively detects is carbon dioxide, and test specification is 0 ~ 10%; The harmful gas that described hydrogen chloride analytical equipment quantitatively detects is hydrogen chloride, and test specification is 0 ~ 3000ppm; Described hydrogen cyanide analytical equipment, the harmful gas quantitatively detected is hydrogen cyanide, test specification is 0 ~ 100ppm; The heat discharged in described oxygen analyser analytic combustion process, the test specification of oxygen concentration is 0 ~ 30%; The test specification of described dust concentration proving installation is 0 ~ 1000mg/m
3.
The test method that above-mentioned a kind of macromolecular material burning produces the proving installation of harmful gas is heated macromolecular material for utilizing the taper well heater to adjust different capacity, meeting melting, depolymerization, decomposition, burning after macromolecular material is heated, the gas collection that will produce from the process that is heated to burning by wind-collecting cover enters pipeline; The proving installation of harmful gas utilizes the potential difference (PD) sensing probe, and carbon monoxide, carbon dioxide, hydrogen chloride and hydrogen cyanide harmful gas that overall process is produced are quantitatively detected; By oxygen analyser, the variation of oxygen concentration in combustion process is monitored, calculated the heat that burning discharges; By the dust concentration proving installation, smokescope in combustion process is analyzed.
The present invention compared with prior art, has realized the quantitative detection to harmful gas in the macromolecular material combustion process, has also realized carbon monoxide, carbon dioxide, hydrogen chloride and hydrogen cyanide test and analysis technology that burning produces simultaneously.Simple in structure, novel, low cost of manufacture, easy to use, safe and reliable.
[accompanying drawing explanation]
Fig. 1 is the structural representation that macromolecular material burning of the present invention produces the proving installation of harmful gas;
Fig. 2 is that in embodiment of the present invention polymethylmethacrylate sample combustion process, carbon monoxide content is curve map over time;
Fig. 3 is that in another embodiment of the present invention Polyvinylchloride sample combustion process, hydrogen chloride content is curve map over time;
As shown in the figure, in figure: 1 is wind-collecting cover, 2 is the taper well heater, 3 is the first pipeline, 4 is the 5th interface, 5 is the dust concentration proving installation, 6 is the 4th interface, 7 is filtrator, 8 is the 3rd interface, 9 is the hydrogen chloride analytical equipment, 10 is temperature, hygrometer, 11 is the hydrogen cyanide analytical equipment, 12 is the second interface, 13 is first interface, 14 is blower fan, 15 is the 6th interface, 16 is cooling tube, 17 is the 7th interface, 18 is flowmeter, 19 is the 8th interface, 20 is the carboloy dioxide analysis device, 21 is oxygen analyser, 22 is the carbon monoxide analytical equipment, 23 is second pipe,
Specifying Fig. 1 is Figure of abstract of the present invention.
[embodiment]
Below in conjunction with accompanying drawing, the invention will be further described, is very clearly the structure of this device and the principle people professional concerning this.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of macromolecular material burning produces the proving installation of harmful gas, comprise the taper well heater, wind-collecting cover, blower fan, flowmeter, cooling tube, filtrator, oxygen analyser, the hydrogen chloride analytical equipment, the hydrogen cyanide analytical equipment, carbon monoxide analytical equipment and carboloy dioxide analysis device, it is characterized in that this device connects into inverted L-shaped by the first pipeline and second pipe, the junction inner chamber is equipped with blower fan, on the first pipeline, first interface and the second interface inner chamber are added with drying agent, between the second interface and the 3rd interface, the top of section from left to right is provided with hydrogen chloride successively, the hydrogen cyanide analytical equipment, below is provided with temperature, hygrometer, the 3rd interface and the 4th interface inner chamber are provided with filtrator, below between the 4th interface and the 5th interface is provided with the dust concentration proving installation, dust concentration proving installation right side connects wind-collecting cover, wind-collecting cover inside is provided with the taper well heater, between the 6th interface and the 7th interface, section is provided with cooling tube, between the 7th interface and the 8th interface, section is provided with flowmeter, the 8th left side, interface below is provided with carbon dioxide, carbon monoxide analytical equipment from top to bottom successively, and right side is provided with oxygen analyser.
The taper well heater consists of several heating wire, tapered radiation heating, and heating power reaches 0 ~ 50kW/m
2; The harmful gas that the carbon monoxide analytical equipment quantitatively detects is carbon monoxide, and test specification is 0 ~ 1000ppm; The harmful gas that the carboloy dioxide analysis device quantitatively detects is carbon dioxide, and test specification is 0 ~ 10%; The harmful gas that the hydrogen chloride analytical equipment quantitatively detects is hydrogen chloride, and test specification is 0 ~ 3000ppm; The hydrogen cyanide analytical equipment, the harmful gas quantitatively detected is hydrogen cyanide, test specification is 0 ~ 100ppm; The heat discharged in oxygen analyser analytic combustion process, the test specification of oxygen concentration is 0 ~ 30%; The test specification of dust concentration proving installation is 0 ~ 1000mg/m
3.
The test method of this device is heated macromolecular material for utilizing the taper well heater to adjust different capacity, meeting melting, depolymerization, decomposition, burning after macromolecular material is heated, the gas collection that will produce from the process that is heated to burning by wind-collecting cover enters pipeline; By the dust concentration proving installation, smokescope in combustion process is analyzed; The proving installation of harmful gas utilizes the potential difference (PD) sensing probe, and carbon monoxide, carbon dioxide, hydrogen chloride and hydrogen cyanide harmful gas that overall process is produced are quantitatively detected; By oxygen analyser, the variation of oxygen concentration in combustion process is monitored, calculated the heat that burning discharges.
Embodiment 1:
Polymethylmethacrylate sample burning test
Concrete test procedure is as follows:
A. start-up routine, the heating wire in the taper well heater produces heat, and making its heating radiation power is 50kW/m
2, meet the regulation of claim 2;
B. measure the area of polymethylmethacrylate sample, and sample is placed on sample stage, by jacking gear, adjust the distance between sample stage and isolating high-pressure ignitor, operation control box is carried out the electronic high voltage ignition operation;
C. after polymethylmethacrylate is heated, melting depolymerization gradually, produce little molecule inflammable gas, and, along with the increase of radiations heat energy, finally blaze up;
D. record is heated in combustion process, the variation of carbon monoxide, carbon dioxide, hydrogen chloride and four kinds of gas concentrations of hydrogen cyanide;
E. record is heated in combustion process, the variation of oxygen concentration, and calculate HRR and gross heat of combustion in combustion process;
F. record is heated in combustion process, the variation of smokescope, and calculate the flue dust productive rate.
In this routine polymethylmethacrylate sample combustion process, carbon monoxide content is curve map over time, as shown in Figure 2.
Embodiment 2:
Polyvinylchloride sample burning test
Concrete test procedure is as follows:
A. start-up routine, the heating wire in the taper well heater produces heat, and making its heating radiation power is 50kW/m
2, meet the regulation of claim 2;
B. measure the area of Polyvinylchloride sample, and sample is placed on sample stage, by jacking gear, adjust the distance between sample stage and isolating high-pressure ignitor, operation control box is carried out the electronic high voltage ignition operation;
C. after Polyvinylchloride is heated, melting depolymerization gradually, produce little molecule inflammable gas, and, along with the increase of radiations heat energy, finally blaze up;
D. record is heated in combustion process, the variation of carbon monoxide, carbon dioxide, hydrogen chloride and four kinds of gas concentrations of hydrogen cyanide;
E. record is heated in combustion process, the variation of oxygen concentration, and calculate HRR and gross heat of combustion in combustion process;
F. record is heated in combustion process, the variation of smokescope, and calculate the flue dust productive rate.
In this routine Polyvinylchloride sample combustion process, hydrogen chloride content is curve map over time, as shown in Figure 3.
Claims (9)
1. a macromolecular material burns and produces the proving installation of harmful gas, comprise the taper well heater, wind-collecting cover, blower fan, flowmeter, cooling tube, filtrator, oxygen analyser, the hydrogen chloride analytical equipment, the hydrogen cyanide analytical equipment, carbon monoxide analytical equipment and carboloy dioxide analysis device, it is characterized in that this device connects into inverted L-shaped by the first pipeline and second pipe, the junction inner chamber is equipped with blower fan, on the first pipeline, first interface and the second interface inner chamber are added with drying agent, between the second interface and the 3rd interface, the top of section from left to right is provided with hydrogen chloride successively, the hydrogen cyanide analytical equipment, below is provided with temperature, hygrometer, the 3rd interface and the 4th interface inner chamber are provided with filtrator, pipeline below between the 4th interface and the 5th interface is provided with the dust concentration proving installation, dust concentration proving installation right side connects wind-collecting cover, wind-collecting cover inside is provided with the taper well heater, between the 6th interface and the 7th interface, section is provided with cooling tube, between the 7th interface and the 8th interface, section is provided with flowmeter, the 8th left side, interface below is provided with carbon dioxide, carbon monoxide analytical equipment from top to bottom successively, and right side is provided with oxygen analyser.
2. a kind of macromolecular material burning as claimed in claim 1 produces the proving installation of harmful gas, it is characterized in that described taper well heater consists of several heating wire, tapered radiation heating, and heating power reaches 0 ~ 50kW/m
2.
3. a kind of macromolecular material burning as claimed in claim 1 produces the proving installation of harmful gas, it is characterized in that the harmful gas that described carbon monoxide analytical equipment quantitatively detects is carbon monoxide, and test specification is 0 ~ 1000ppm.
4. a kind of macromolecular material burning as claimed in claim 1 produces the proving installation of harmful gas, it is characterized in that the harmful gas that described carboloy dioxide analysis device quantitatively detects is carbon dioxide, and test specification is 0 ~ 10%.
5. a kind of macromolecular material burning as claimed in claim 1 produces the proving installation of harmful gas, it is characterized in that the harmful gas that described hydrogen chloride analytical equipment quantitatively detects is hydrogen chloride, and test specification is 0 ~ 3000ppm.
6. a kind of macromolecular material burning as claimed in claim 1 produces the proving installation of harmful gas, it is characterized in that described hydrogen cyanide analytical equipment, and the harmful gas quantitatively detected is hydrogen cyanide, and test specification is 0 ~ 100ppm.
7. a kind of macromolecular material burning as claimed in claim 1 produces the proving installation of harmful gas, the heat that its feature discharges in described oxygen analyser analytic combustion process, and the test specification of oxygen concentration is 0 ~ 30%.
8. a kind of macromolecular material burning as claimed in claim 1 produces the proving installation of harmful gas, and the test specification that it is characterized in that described dust concentration proving installation is 0 ~ 1000mg/m
3.
9. a kind of macromolecular material burning as claimed in claim 1 produces the test method of the proving installation of harmful gas, it is characterized in that utilizing the taper well heater to adjust different capacity is heated macromolecular material, meeting melting, depolymerization, decomposition, burning after macromolecular material is heated, the gas collection that will produce from the process that is heated to burning by wind-collecting cover enters pipeline; The proving installation of harmful gas utilizes the potential difference (PD) sensing probe, and carbon monoxide, carbon dioxide, hydrogen chloride and hydrogen cyanide harmful gas that overall process is produced are quantitatively detected; By oxygen analyser, the variation of oxygen concentration in combustion process is monitored, calculated the heat that burning discharges; By the dust concentration proving installation, smokescope in combustion process is analyzed.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007005A (en) * | 2014-05-27 | 2014-08-27 | 张家港朗亿机电设备有限公司 | Atmospheric dust concentration measurement equipment and method |
| CN105223313A (en) * | 2015-09-17 | 2016-01-06 | 浙江工商大学 | Hydrogen cyanide pick-up unit and detection method in research department |
| CN105717235A (en) * | 2016-03-24 | 2016-06-29 | 西安科技大学 | Combustion flue gas analysis experiment monitoring device |
| CN108037236A (en) * | 2017-11-21 | 2018-05-15 | 中国科学院地质与地球物理研究所兰州油气资源研究中心 | Methane conversion quantitative analysis gas collection experimental provision in flare discharge |
| CN108645957A (en) * | 2018-04-10 | 2018-10-12 | 合肥工业大学 | The experimental provision and experimental method of cable fire characteristic under a kind of measurement oxygen-enriched environment |
| CN111308009A (en) * | 2020-03-05 | 2020-06-19 | 中煤科工集团重庆研究院有限公司 | Mining high polymer material smoldering oxygen consumption and product synchronous test analysis device and method |
| CN111323415A (en) * | 2020-04-16 | 2020-06-23 | 中科易朔(厦门)防火技术服务有限公司 | Testing device and testing method for detecting smoke toxicity generated by high polymer material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476813U (en) * | 2009-08-20 | 2010-05-19 | 北京远东仪表有限公司 | Direct insert type continuous smoke monitoring data collection system |
| CN202853655U (en) * | 2012-09-20 | 2013-04-03 | 陕西陕煤黄陵矿业有限公司 | Flue gas monitoring system |
| CN202994770U (en) * | 2012-12-22 | 2013-06-12 | 武汉泰肯环保科技发展有限公司 | System for monitoring smoke continuously |
-
2013
- 2013-08-06 CN CN2013103394335A patent/CN103439364A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476813U (en) * | 2009-08-20 | 2010-05-19 | 北京远东仪表有限公司 | Direct insert type continuous smoke monitoring data collection system |
| CN202853655U (en) * | 2012-09-20 | 2013-04-03 | 陕西陕煤黄陵矿业有限公司 | Flue gas monitoring system |
| CN202994770U (en) * | 2012-12-22 | 2013-06-12 | 武汉泰肯环保科技发展有限公司 | System for monitoring smoke continuously |
Non-Patent Citations (2)
| Title |
|---|
| 广东电网公司电力科学研究院: "《环境保护》", 31 January 2011, article "环境保护", pages: 264-268 * |
| 赵旭德等: "《中小企业环保设备运行管理手册》", 30 June 2012, 中国环境科学出版社, article "中小企业环保设备运行管理手册", pages: 282-303 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007005A (en) * | 2014-05-27 | 2014-08-27 | 张家港朗亿机电设备有限公司 | Atmospheric dust concentration measurement equipment and method |
| CN105223313A (en) * | 2015-09-17 | 2016-01-06 | 浙江工商大学 | Hydrogen cyanide pick-up unit and detection method in research department |
| CN105717235A (en) * | 2016-03-24 | 2016-06-29 | 西安科技大学 | Combustion flue gas analysis experiment monitoring device |
| CN108037236A (en) * | 2017-11-21 | 2018-05-15 | 中国科学院地质与地球物理研究所兰州油气资源研究中心 | Methane conversion quantitative analysis gas collection experimental provision in flare discharge |
| CN108037236B (en) * | 2017-11-21 | 2023-03-03 | 中国科学院西北生态环境资源研究院 | Experimental device for collecting quantitative analysis gas of methane conversion rate in torch discharge |
| CN108645957A (en) * | 2018-04-10 | 2018-10-12 | 合肥工业大学 | The experimental provision and experimental method of cable fire characteristic under a kind of measurement oxygen-enriched environment |
| CN108645957B (en) * | 2018-04-10 | 2024-03-29 | 合肥工业大学 | Experimental device and experimental method for measuring cable combustion characteristics in oxygen-enriched environment |
| CN111308009A (en) * | 2020-03-05 | 2020-06-19 | 中煤科工集团重庆研究院有限公司 | Mining high polymer material smoldering oxygen consumption and product synchronous test analysis device and method |
| CN111308009B (en) * | 2020-03-05 | 2022-04-29 | 山东科技大学 | Mining high polymer material smoldering oxygen consumption and product synchronous test analysis device and method |
| CN111323415A (en) * | 2020-04-16 | 2020-06-23 | 中科易朔(厦门)防火技术服务有限公司 | Testing device and testing method for detecting smoke toxicity generated by high polymer material |
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Application publication date: 20131211 |