Spectrum online analysis flow path

Abstract

The invention relates to a spectrum online analysis flow path which comprises a liquid inlet pipe and a liquid outlet pipe. A filter, a degassing tank and a flow cell are sequentially connected between the liquid inlet pipe and the liquid outlet pipe; an overflow pipe connected with the liquid outlet pipe is arranged on the degassing tank; a two-way valve is arranged between the flow cell and the liquid outlet pipe; and the flow cell is connected with a spectrograph. The flow path has the beneficial effects that the analysis flow path for online measurement of the spent fuel post-treatment feed liquid is beneficial to realizing real-time online analysis of the post-treatment process feed liquid. The flow path is simple in structure, convenient to install, small in dead volume, high in liquid flow updating speed and not prone to blockage and has multiple functions of measurement, correction, cleaning, residual liquid emptying and the like, all components and pipelines are connected in a clamping and sleeving mode, replacement and maintenance are convenient and fast, and installation in the glove box and operation in a radioactive environment are facilitated.

Description

technical field [0001] The invention belongs to the field of nuclear instruments, and in particular relates to an online spectral analysis flow path. Background technique [0002] my country's spent fuel reprocessing adopts the PUREX process, which is based on the difference in the distribution ratio of uranium, plutonium and sliver elements in the organic phase and the aqueous phase. Under different conditions, repeated extraction and stripping are carried out, and finally uranium products and plutonium are obtained. The chemical process of the product. In each step of the post-processing process, strict process control analysis must be carried out. There are many analysis points and high frequency of analysis. The results of the analysis directly reflect whether each process point in the post-processing process operates stably according to the set parameters. The analysis results obtained by reasonable and reliable analysis methods can play a role in guiding the smooth ope...

AI Technical Summary

Problems solved by technology

The disadvantage is that the current spectral analysis methods are all offline analysis, which need to be transferred to the analysis device for measurement after sampling from the process point. Therefore, the analysis data lags behind and cannot accurately reflect the real situation of the material liquid in real time. The sample cannot be returned to the process point, and the material liquid will be lost and waste liquid will be generated

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