Peripheral Distribution and Collection System for Simulated Moving Bed Columns
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Solution Overview
Problem
In N-column systems, the differences in residence time in non-selective zones hinder separation performance, and increasing these volumes leads to unwanted flow rate increases, compromising purity and efficiency in Simulated Moving Bed processes.
Innovation Solution
A device with a distribution zone at the column head and a collection zone at the bottom, utilizing a network of peripheral pipes to ensure uniform fluid distribution and collection, minimizing non-selective volumes and maintaining fluid synchronicity across the column section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the volumes of non-selective zones (distribution zone and collection zone) are increased to compensate for residence time distribution, then fluid synchronicity is improved, but pump around flow rates and energy consumption increase undesirably
Solution Approach 1:
The invention changes the geometric parameters of the distribution and collection zones, specifically optimizing their heights (Hsup and Hfond) and the diameter (Dc) of connecting pipes to achieve the best compromise between fluid synchronicity and energy consumption. This involves finding optimal parameter values that minimize residence time distribution without excessive volume increase
Solution Approach 2:
The invention applies different local characteristics to different parts of the non-selective zones. The distribution zone at the top and collection zone at the bottom are designed with specific local geometries and pipe configurations that are optimized for their respective functions, rather than using a uniform design throughout
2Reliability
If the volumes of non-selective zones are increased to ensure proper fluid distribution and collection, then separation performance is maintained, but the overall system volume and productivity are reduced
Solution Approach 1:
The invention optimizes the parameters Hsup, Hfond, and Dc to minimize the volumes of non-selective zones while maintaining separation performance. By finding the optimal parameter values, the effective column volume is maximized, thereby improving productivity without sacrificing separation quality
Data Source
Figure 1~1a
Figure 1
Figure 2~2a
AI summary
The present invention describes a device for distributing the fluid entering or for collecting the fluid leaving a column that forms part of a set of N columns in series intended to be used in a simulated moving bed simulation method. The present device makes it possible very appreciably to reduce the non-selective volumes in each column, while at the same time ensuring good synchronicity of the flow.