Frequency-doubled semiconductor laser-based detection apparatus and method for concentration of gaseous elemental mercury
A gaseous element, detection device technology, applied in color/spectral property measurement, analysis of materials, instruments, etc., can solve the problems of vibration interference system, short light source life, unstable power, etc., to avoid interference, reduce maintenance frequency and cost , the effect of stable output power
Inactive Publication Date: 2017-02-01
SUZHOU RUILAN ENVIRONMENTAL PROTECTION TECHCO LTD
View PDF9 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to address the problems of short light source life and unstable power faced by the existing mercury gas monitoring technology based on mercury lamps, and the susceptibility to environmental vibration interference and To solve problems such as system complexity, a gaseous elemental mercury concentration detection device and method based on a frequency-doubled semiconductor laser is provided, which can measure the concentration of mercury gas in the sample gas cell, realize real-time monitoring of the concentration of elemental mercury, and meet the requirements of industrial mercury emissions. monitoring needs
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 Construction
[0044] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0045] The technical scheme of concrete implementation of the present invention is:
[0046] like figure 1As shown, the present invention provides a gaseous element mercury concentration detection device based on a frequency-doubled semiconductor laser, including: a laser controller 1, a semiconductor laser 2, a grating 3, a grating controller 4, a reflector 5, a first convex lens 6, a BBO (Barium metaborate) crystal 7, second convex lens 8, dichroic prism 9, switchable mercury cell mount 10, reference mercury cell 11, zero gas cell 12, displacement controller 13, sample gas cell 14, interference filter 15. Detector 16, signal analyzer 17;
[0047] The s...
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
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| full width at half maximum | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a frequency-doubled semiconductor laser-based detection apparatus for the concentration of gaseous elemental mercury. The apparatus comprises a laser controller, a semiconductor laser, a raster, a raster controller, a reflector, a first convex lens, a BBO crystal, a second convex lens, a beam splitter prism, a switchable mercury well mounting base, a reference mercury well, a zero gas cell, a displacement controller, a sample gas cell, an interference filter, a detector and a signal analyzer. The apparatus provided by the invention can measure the concentration of mercury gas in the sample gas cell, realizes real-time monitoring of the concentration of elemental mercury and meets demands on monitoring of discharge of industrial mercury.
Description
technical field [0001] The invention relates to a device and method for detecting the concentration of mercury in a gaseous element based on a frequency-doubled semiconductor laser. Background technique [0002] Mercury pollution in the atmosphere mainly comes from artificial and natural emissions, and artificial emissions mainly come from industrial flue gas, especially flue gas emissions from thermal power plants. Coal occupies a large proportion in my country's energy structure, and coal mines contain relatively high levels of mercury. Therefore, elemental mercury gas in coal combustion flue gas is the main source of mercury pollution in my country. The main form of mercury pollutants emitted from coal combustion is gaseous elemental mercury, and its total mercury content can be measured by converting other oxide forms of mercury into elemental mercury by thermocatalytic or chemical conversion. The traditional mercury gas measurement technology uses wet chemical method....
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 Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/39
CPCG01N21/39G01N2201/06113
Inventor 娄秀涛林宏泽邓天瑞万莉王俊楠何赛灵
Owner SUZHOU RUILAN ENVIRONMENTAL PROTECTION TECHCO LTD