Reactor hydraulic analogy method based on OH-tracing

Abstract

The invention discloses a reactor hydraulic analogy method based on OH-tracing. The method comprises the following steps: after the flow state of a reactor is stable, adding a tracing solution at a liquid inlet, then inserting a pH meter at a monitored point, monitoring and recording the pH value through the pH meter until the pH value does not significantly change or until a time end point set by a specific experiment is combined; then, combing the parameters such as experimental temperature and the concentration of the tracing solution, converting the monitored pH value into the actual concentration of OH-ions of the tracing solution through an equation after the deviation of a Debye-Huckel's formula, then subtracting the actual concentration of OH-ions contained in inlet liquid obtained through conversion by using the same method, and obtaining the actual concentration change and final distribution of the OH-ions traced at the monitored point. According to the method, the concentration of the traced ions can be obtained continuously, conveniently and quickly in situ, the diffusion change condition and final distribution state of matters in the reactor are obtained, basic data are provided for carrying out hydraulic analogy in the reactor, and the method can be used for verifying a constructed model.

Description

technical field [0001] The invention belongs to the field of reactor hydraulic simulation, and relates to a rapid monitoring method for hydraulic simulation, in particular to a method based on OH — Traced Reactor Hydraulic Simulation Method. Background technique [0002] The material diffusion in the reactor is an indispensable basis and verification means for establishing the material transfer model and hydraulic model of the reactor, and then studying the mixing performance of the reactor. [0003] At present, most of the studies on the diffusion of materials in the reactor use the chemical coupling method, the magnetic particle flow tracking method, the single / double conductivity electrode method, and the ion tracer method (Li + Ion tracer, using LiCl as tracer; Ca 2+ Ion tracer, with CaCl 2 As a tracer), etc.; however, these existing methods cannot be used for in-situ monitoring, and it is also difficult to realize real-time monitoring. At the same time, there are als...

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Problems solved by technology

[0003] At present, most of the studies on the diffusion of materials in the reactor use the chemical coupling method, the magnetic particle flow tracking method, the single / double conductivity electrode method, and the ion tracer method (Li + Ion tracer, using LiCl as tracer; Ca 2+ Ion tracer, with CaCl 2 As a tracer), etc.; however, these existing methods cannot be used for in-situ monitoring, and it is also difficult to realize real-time monitoring. At the same time, there are also problems in sampling, complicated sample measurement operations, difficulty in continuous monitoring, large accumulation errors, and long time-consuming experiments. and other issues, unable to meet the requirements for monitoring the diffusion of substances in the reactor in research and production

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