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Sulfur dioxide analyzer and analyzing method based on ultra-violet light-emitting diode

A technology of light-emitting diodes and sulfur dioxide, which is applied in the direction of material analysis, analysis materials, and instruments by optical means, can solve the problems of inability to use online monitoring, poor measurement accuracy, and low measurement accuracy, and achieves the solution of eliminating cross-contamination and avoiding errors. Effect

Active Publication Date: 2010-12-08
广东盈峰科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] However, due to the shortcomings of current sulfur dioxide analyzers such as cross-interference, long measurement time and poor measurement accuracy, they cannot meet the needs of online monitoring well.
The cost of measuring sulfur dioxide by non-dispersive infrared absorption method is relatively low, but the measurement accuracy is not high, and it is only suitable for measuring high concentration of sulfur dioxide; Long, cannot be used for online monitoring, and cannot quickly respond to the current situation of sulfur dioxide emissions

Method used

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  • Sulfur dioxide analyzer and analyzing method based on ultra-violet light-emitting diode
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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0036] Such as figure 1 As shown, a sulfur dioxide analyzer based on ultraviolet light-emitting diodes includes an ultraviolet light-emitting diode 1, an absorption cell 3, a spectrometer 5, and a computer 6 connected to the spectrometer 5 through a USB. Through the incident window 304 and the exit window 302 of ultraviolet rays, the absorption pool 3 is also provided with an air inlet 301 and an exhaust port 303; The ultraviolet light emitted by the ultraviolet light-emitting diode 1 is imported into the incident optical fiber 2 of the absorption pool 3 from the incident window 304, and a collimator 201 and 202 are respectively arranged at the two ends of the incident optical fiber 2; Connected between the spectrometer 5 is an exit optical fiber 4 that directs the ultraviolet light guide emitted by the exit window 302 t...

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Abstract

The invention discloses a sulfur dioxide analyzer based on an ultra-violet light-emitting diode, comprising the ultra-violet light-emitting diode, an absorption cell, a spectrometer and a computer connected on the spectrometer, wherein the two sides of the absorption cell are respectively provided with an incident window and an emergent window which correspond to each other and are transparent to ultra-violet rays, and the absorption cell is also provided with an air inlet and an air outlet; an incident optical fiber is connected between the ultra-violet light-emitting diode and the incident window of the absorption cell, and the two ends of the incident optical fiber are respectively provide with a collimator; an emergent optical fiber is connected between the emergent window of the absorption cell and the spectrometer, and the two ends of the emergent optical fiber are respectively provided with a collimator; and the included angle between the incident window and the ultra-violet light path and the included angle between the emergent window and the transmitted ultra-violet light path are acute angles or obtuse angles close to right angles. The invention also discloses a sulfur dioxide analyzing method based on the ultra-violet light-emitting diode. The invention has the advantages of accurate measurement, large measurement range and short measurement time.

Description

technical field [0001] The invention relates to a gas analysis device, in particular to a sulfur dioxide analyzer based on an ultraviolet absorption method for measuring the concentration of sulfur dioxide in gas, and also relates to a sulfur dioxide analysis method based on an ultraviolet light-emitting diode. Background technique [0002] Sulfur dioxide is an important environmental pollution gas, which has been listed as a routine measurement item and one of the contents of environmental statistics declaration. Accurate and rapid detection of sulfur dioxide concentration plays an important role in environmental protection, environmental monitoring, environmental early warning, pollution source control, and performance evaluation of flue gas desulfurization devices. [0003] However, due to the shortcomings of cross-interference, long measurement time and poor measurement accuracy in the current sulfur dioxide analyzer, it cannot meet the needs of online monitoring well. ...

Claims

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Application Information

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IPC IPC(8): G01N21/33G01N21/01
Inventor 王富生马光明
Owner 广东盈峰科技有限公司
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