Method for measuring granule fluid two-phase stream reactor fluid phase component concentration distribution

Abstract

The invention relates to a method for measuring the concentration distribution of compositions in a particle-fluid two-phase flow reactor. The method comprises the following steps of: S1, calculation of the mass conservation equation and the momentum conservation equation of each micro unit in a measuring area of the particle-fluid two-phase flow reactor and acquisition of the fluid-solid speed and the particle concentration distribution of each micro unit; S2, acquisition of matrixes which are formed by spacial discrete distribution of dilute and dense phase structural parameters; S3, acquisition of the composition concentration of dilute phase and dense phase; S4, calculation of the mean fluid density of the micro unit according to the composition concentration of the dilute phase and the dense phase, in which, if the mean fluid density meets the precision requirement, the fluid-solid speed, the particle concentration and the composition concentration are outputted and the operation is ended; if the mean fluid density fails to meet the precision requirement, the calculated mean fluid density of the dilute phase and the dense phase is substituted in the step S1, and the next iteration begins. The method introduces a multi-scale flow structure into the particle-fluid mass transfer measuring process, takes malconformation of local mass transfer into account, and more accurately measures the composition concentration distribution in the particle-fluid two-phase flow reactor.

Description

Method for Measuring Concentration Distribution of Fluid Phase Components in Granular Fluid Two-Phase Flow Reactor technical field The invention relates to a particle-fluid two-phase flow reactor, in particular to a method for measuring the concentration distribution of transferred components during particle-fluid mass transfer in the particle-fluid two-phase flow reactor. Background technique Granular fluid two-phase flow reactors are widely used in the field of process industry. The mass transfer process in the particle fluid system is closely related to complex flow factors, which in turn is related to the relationship between the intrinsic reaction rate and the superficial reaction rate, as well as the concentration distribution of the fluid phase components, and finally affects the flow rate of the particle fluid two-phase flow reactor. Design and Zoom. Therefore, how to effectively predict the mass transfer process and component concentration distribution between pa...

AI Technical Summary

Problems solved by technology

1. Due to the influence of the structure, there is local inhomogeneity in the mass transfer of granular fluids. The actual mass transfer capacity is not only affected by the local flow structure and physical parameters, but also limited by the historical experience of mass transfer. It cannot be realized only by local flow information. Mass transfer analysis with structure

2. There is a non-uniform distribution of the component concentration locally, which makes it difficult to obtain and measure representative component samples during the experiment, and the difficulty of the experiment will further affect the accuracy of the associated data

In the prior art, for the measurement method of the concentration distribution of the fluid phase components in the particle fluid two-phase flow reactor, such as document 3: SchoenfelderH., KruseM.andWertherJ., AIChEJ.Vol.42, P.1875, (1996) The disclosed technology, the flow structure is based on steady-state and empirical data, lacks the influence of real-time and dynamic changes in the flow structure, and the calculation method obtained is difficult to extrapolate from the original experimental conditions to industrial conditions, so the application and Promotions are limited

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