Infrared spectrum-based detection method of large-space oil gas concentration of oil house

Abstract

The invention discloses an infrared spectrum-based detection method of the large-space oil gas concentration of an oil house. An infrared spectroscopy is adopted, the content of each component of a common oil gas multicomponent mixture (gasoline, diesel oil, kerosene and the like) is determined by a fourier transform infrared spectrometer according to the intensity of a characteristic absorption peak, an obtained absorption spectrum of oil gas hydrocarbons follows a lambert-bill absorption law according to an absorption relation, and a signal is amplified by virtue of an infrared light source, a gas analysis chamber, a circuit system and the like, so as to obtain the detected oil gas concentration. According to the detection method, the fourier transform infrared spectrometer is sent into a test analysis unit in an active extraction mode, and an explosion-proof analyzer can be installed in a safe area out of an oil can by adopting onsite pipeline suction on sampling, and thereby the risk of the oil gas analysis is greatly reduced, the condition that no circuit system is within a hazard source is guaranteed and the ignition caused by measurement is avoided.

Description

technical field [0001] The invention belongs to the technical field of oil and gas concentration detection, and in particular relates to a method for detecting oil and gas concentration in a large space of an oil depot based on infrared spectroscopy. Background technique [0002] At present, online monitoring of flammable and explosive gases has become a key link and technical basis for safety monitoring and environmental early warning, and at the same time provides data support and theoretical criteria for safety assessment. Traditional gas online monitoring technologies mainly include gas chromatography, gas sensor method, Fourier transform infrared spectroscopy, photoacoustic spectroscopy, etc., but in actual use, these methods have complex sampling, cross-sensitivity, poor long-term stability, detection Disadvantages such as insufficient gas components and high cost. [0003] At present, the combustible gas detection method that is widely used is the catalytic combustio...

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Problems solved by technology

[0012] The purpose of the embodiments of the present invention is to provide a method for detecting oil and gas concentration in large space of oil depot based on infrared spectroscopy, aiming at solving the problem of low precision and complicated analysis steps in the existing oil and gas concentration detection method, which cannot realize automatic detection and automatic control, etc. question

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