Research Of Gas-Liquid Two Phase CO₂ Flow Using Scattered Light Cross-Correlation Velocity Measurement Method

Carbon capture and storage(CCS)technology is a new technology that uses carbon dioxide as a resource to generate economic benefits.It has been emphasized as a key technology path to prevent environmental problems caused by carbon dioxide emissions.In order to better monitor the change of gas-liquid two-phase fluid in the pipeline during transportation,flow velocity as an important measurement and control parameter has great significance in process monitoring.This article uses this as a research background to establish a CO2 gas-liquid two-phase flow velocity measurement method based on the scattered light correlation method.The use of scattered light can improve the influence of the flow pattern and phase distribution on the correlation velocimetry method,increasing the effectiveness and stability And then use cross-correlation techniques to complete the measurement.The CO2 gas-liquid two-phase flow experimental research device was used to detect the flow velocity,and the results of the Coriolis mass flowmeter were used as standards to verify the accuracy of the data.Experiments have examined the flow velocity of CO2 gas-liquid two-phase flow under different conditions,and further studied the accuracy of flow velocity detection under different beam angle conditions,showing that the sampling errors are all below 6%.The experimental results show that this scheme has high feasibility and accuracy,and provides a new idea for gas-liquid two-phase flow velocity detection.