Non-methane total hydrocarbon measuring system based on laser spectroscopy and hydrogen flame ionization method
A non-methane total hydrocarbon, measurement system technology, applied in the field of gas detection, can solve the problems of weak anti-interference ability, slow response speed, low detection sensitivity, etc., and achieve the effect of strong real-time performance, fast response speed and high detection sensitivity
Active Publication Date: 2022-03-11
HANGZHOU CHUNLAI TECH
View PDF11 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007]
The present invention aims to overcome the problems of low detection sensitivity, weak anti-interference ability and slow response speed in the existing online monitoring method of NMHC in the prior art, and provides a method with high detection sensitivity, strong anti-interference ability and fast response speed. Fast, real-time and stable non-methane total hydrocarbon measurement system based on laser spectroscopy and hydrogen flame ionization method
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0045] The invention provides a non-methane total hydrocarbon measuring system of laser spectroscopy and hydrogen flame ionization method, comprising:
[0046] Including TDLAS detection module, FID detection module, communication module and control board;
[0047] The TDLAS detection module includes:
[0048] The laser driving circuit is used to drive the laser to work through the constant current circuit, and control the temperature of the laser through the PID circuit and the temperature control chip;
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the technical field of gas detection, and particularly relates to a non-methane total hydrocarbon measuring system based on a laser spectrometry and a hydrogen flame ionization method. The non-methane total hydrocarbon measurement system based on the laser spectrometry and the hydrogen flame ionization method comprises a TDLAS detection module, an FID detection module, a communication module and a control panel, the TDLAS detection module is used for obtaining the CH4 gas concentration by using a laser spectrometry; the FID detection module obtains the total hydrocarbon concentration by using a hydrogen flame ionization method; the communication module is used for outputting signal data acquired by the TDLAS detection module and the FID detection module to the control panel; and the control panel is used for calculating the content of non-methane total hydrocarbon NMHC according to the obtained total hydrocarbon concentration and CH4 gas concentration data. The method has the characteristics of high detection sensitivity, strong anti-interference capability, high response speed, strong real-time performance and good stability.
Description
technical field [0001] The invention belongs to the technical field of gas detection, in particular to a non-methane total hydrocarbon measurement system based on laser spectroscopy and hydrogen flame ionization. Background technique [0002] Volatile organic compounds (VOCs) are an important source of atmospheric photochemical smog. 3 The important precursors of pollution have an important impact on the secondary PM2.5 generation, and most of the VOCs will cause harm to the human body. In recent years, with the rapid development of industrialization, VOCs emissions have increased significantly, and environmental monitoring has paid more and more attention to VOCs emissions. Due to the different components of VOCs produced by different industries and different production processes, it is difficult to analyze and evaluate each component. VOCs emissions can be monitored by measuring the total VOCs emissions. However, due to the harmless methane The proportion of VOCs in the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01N21/39G01N27/626
CPCG01N21/39G01N27/626Y02A50/20
Inventor 刘立富汪磊张晶晶冯雨轩吴强孙军于志伟唐怀武
Owner HANGZHOU CHUNLAI TECH