T/CSP 18-2024 Granular technology, particle velocity measurement, and reflectance optical fiber method

Scope

Scope: This document describes a method for measuring the velocity of solid particles using reflective optical fiber technology. This document is applicable to the measurement of the velocity of solid particles in gas-solid and liquid-solid two-phase flows; Main technical content: Gas-solid and liquid-solid two-phase flows are widely present in the fields of chemical engineering, agriculture, food, and pharmaceuticals. Their non-homogeneous characteristics are closely related to energy saving, consumption reduction, and the development and optimization of new process technologies in production processes. Their characteristics manifest as uneven distribution in space and time, such as local heterogeneity (manifested as the aggregation of particles into sparse and dense phases) and overall heterogeneity (manifested as uneven distribution of particles radially and axially). This uneven flow has a significant impact on fluid performance. The particle velocity distribution in gas-solid and liquid-solid two-phase flows is of great significance for understanding the flow behavior in fluids, axial and radial mixing, and heat and mass transfer characteristics. Accurate and reliable measurement of these parameters has always been a concern for researchers studying gas-solid and liquid-solid two-phase flows. This document provides a method for measuring the flow velocity of solid particles in gas-solid and liquid-solid two-phase systems using reflective optical fiber technology.

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