Spectral measurement system
A spectral measurement and spectral technology, applied in the field of spectral measurement, can solve problems such as inability to achieve online correction
Inactive Publication Date: 2021-05-07
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology
In these measurements, many use fiber optic probe technology for online monitoring, but these monitoring have two major disadvantages: one is to monitor one process point requires one light source, one spectrometer, and multiple process points require multiple light sources and multiple spectrometers
Second, online calibration cannot be achieved without pulling out the online measurement probe
Method used
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[0029] In a continuous extraction experiment, it is necessary to measure the tetravalent uranium content in each level of solution in real time to reflect the extraction state.
[0030] If the concentration of tetravalent uranium in a certain level of feed liquid is measured, the optical signal is switched to the corresponding measuring fiber optic probe 5 through the multiplexer 2 . The absorbance measured by the measuring optical fiber probe 5 is proportional to the concentration of tetravalent uranium, and the concentration of tetravalent uranium is obtained through mathematical model calculation. A total of 6 independent measuring optical fiber probes 5 are connected to the multiplexer 2, thereby completing 6 extraction tanks Measurement of tetravalent uranium in medium.
[0031] Quaternary uranium analysis range: Prepare tetravalent uranium in organic phases (30% TBP kerosene) with different concentrations, and measure the absorbance of different standard samples at 1076....
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The invention belongs to the technical field of spectral measurement, and particularly relates to a spectral measurement system. The system comprises a light source (1) and a spectrograph (3) which are connected to a multiplexer (2), and further comprises a plurality of measuring optical fiber probes (5) connected with the multiplexer (2), and the measuring optical fiber probes (5) can be arranged in solutions of different measuring points (8); the multiplexer (2) can select one measuring optical fiber probe (5), probe light emitted by the light source (1) is coupled to the selected measuring optical fiber probe (5), reflected light obtained by the selected measuring optical fiber probe (5) is coupled to the spectrograph (3), the spectrograph (3) is used for obtaining a spectral signal of the reflected light, and the spectral signal is used for obtaining the concentration of the solution. On-line spectrum measurement of a plurality of measuring optical fiber probes (5) is achieved, and on-line correction is conducted on background signal drift on the premise that the measuring optical fiber probes (5) are not pulled out and on-line measurement of the measuring optical fiber probes (5) is not affected.
Description
technical field [0001] The invention belongs to the technical field of spectrum measurement, and in particular relates to a spectrum measurement system. Background technique [0002] In the production of some chemical products or chemical experiments, it is necessary to perform multi-point online spectral measurement of the concentration of some intermediate reaction liquids or final product liquids. In these measurements, many of them use fiber optic probe technology for online monitoring, but these monitoring have two major disadvantages: one is to monitor one process point requires one light source and one spectrometer, and multiple process points require multiple light sources and multiple spectrometers. The second is that online calibration cannot be realized without pulling out the online measurement probe. Contents of the invention [0003] The object of the present invention is to provide a spectrum measurement device, which can monitor multiple process points onl...
Claims
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IPC IPC(8): G01N21/31G01N21/27
CPCG01N21/274G01N21/31
Inventor 刘焕良王玲左臣张丽华朱浩玮李辉波钱红娟
Owner CHINA INSTITUTE OF ATOMIC ENERGY