Method for detecting oxygen content in butadiene by utilizing semiconductor laser technique

Abstract

The invention provides a method for detecting oxygen content in industrial butadiene by utilizing a laser technique, comprising steps of irradiating the detected butadiene gas by utilizing a laser beam (only absorbed by oxygen) being 700-800 nm in wavelength and 0.5-1.5mW in strength, and obtaining the oxygen concentration of the detected butadiene gas by analyzing the attenuation of the laser intensity, wherein the attenuation of the laser intensity is in a functional relationship with the oxygen content in the detected butadiene gas. The method for detecting oxygen content in butadiene adopts the semiconductor laser technique to achieve fast detection of samples (less than 5 seconds), convenient operation, and exact and reliable analysis result (accuracy reaching 0.05 percent); the detection device has simple structure, convenient operation and safe and reliable detection process and prevents the detected samples from damaging workers.

Description

technical field [0001] The invention belongs to the technical field of detection and relates to a method for measuring the oxygen content in butadiene, in particular to a method for measuring the oxygen content in industrial butadiene by using semiconductor laser technology. Background technique [0002] In industrial production, the oxygen content in butadiene is a very important control index. Because butadiene is prone to peroxidation reaction in the presence of oxygen to form peroxides. Butadiene peroxide is reactive, an extremely unstable substance, and cannot be easily handled safely. With the expansion and wide application of petrochemical products, their potential dangers continue to increase, and they are prone to explosion under the effects of external impact force, friction, impact, thermal stimulation, etc. This accidental explosion has a very damaging effect on the surrounding area. Therefore, it is very important to detect the oxygen content in butadiene in ...

AI Technical Summary

Problems solved by technology

This analysis method has the analysis period that is relatively long, and the content of butadiene in the production of the reaction device cannot be timely; the accuracy is not high (only up to 0.1%), and the consumption of chemical reagents is required. The process is very cumbersome and cannot be automated. Manual analysis can only be used. This analysis requires a lot of human resources and requires manual contact with sample analysis. It is easy to cause physical harm to manpower in the long run.

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