Simulated Moving Bed Adsorptive Separation Process for Multiple Feedstocks
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Solution Overview
Problem
Existing simulated countercurrent adsorptive separation processes for hydrocarbons face challenges in accommodating varying feedstock compositions without major process revamps, limiting flexibility and efficiency.
Innovation Solution
Introducing a second distinct feed stream of different composition into the adsorbent chamber, allowing for increased capacity and flexibility in processing various feed materials without requiring significant changes to the process architecture or equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single feed stream is used in the simulated moving bed adsorptive separation process, then the process architecture remains simple and equipment requirements are minimized, but the flexibility to handle varying feedstock compositions is limited
Solution Approach 1:
The patent applies multi-functionality by enabling the adsorptive separation process to handle multiple types of feedstocks (hydrocarbon feeds, sugar feeds, chemical feeds) with varying compositions using the same process architecture. The system can process feeds containing different concentrations of desired compounds and various impurity profiles without requiring fundamental redesign, making the process universal across different feedstock types.
Solution Approach 2:
The patent utilizes parameter changes by adjusting operational parameters (such as flow rates, cycle times, and transfer point positions) to accommodate different feedstock compositions. By modifying these parameters rather than the physical architecture, the system maintains flexibility while avoiding complex equipment changes.
2Productivity
If the process architecture is fixed to handle specific feedstock compositions, then equipment design is simplified, but the ability to accommodate changing feedstock availability is reduced
Solution Approach 1:
The patent applies dynamics by making the process adaptable and flexible through adjustable operational parameters and configurable feed stream arrangements. Rather than a static design optimized for one feedstock, the system dynamically adjusts to handle varying feedstock compositions, capacities, and types, preventing the need for costly revamps when feedstock availability changes.
3Adaptability or versatility
If multiple feed streams of different compositions are introduced into the adsorbent chamber, then capacity and flexibility are increased, but the complexity of stream distribution and transfer line management increases
Solution Approach 1:
The patent applies segmentation by dividing the feed handling into distinct streams with specific introduction points in the adsorbent chamber. Each feed stream can be managed independently through dedicated transfer lines or shared lines with appropriate timing, allowing complex multi-feed operations to be broken down into manageable segments that simplify overall control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the capacity and flexibility of the separation process, enabling efficient handling of diverse feedstocks while reducing the need for costly piping and equipment revamps, thereby saving time, manpower, and resources.
Implementation Method 1
simulated countercurrent adsorptive separation of hydrocarbons
Data Source
AI summary
The present invention discloses a means to improve the production capacity and feedstock handling flexibility of a simulated moving bed adsorptive separation process by introducing a second feed stream to the adsorbent chamber, such second feed stream comprising a feed material of a different concentration of the desired compound than the concentration of such desired compound in the first feed material stream. The introduction of this second feed material stream may be performed at any location on the adsorbent chamber between (i) a transfer point located immediately upstream of the point of the raffinate material stream withdrawal from the adsorbent chamber to (ii) a transfer point located immediately downstream of the point of extract material stream withdrawal from the adsorbent chamber. The specific transfer point used for the introduction of the second feed material stream will depend upon the concentration of the desired component in the second feed material stream.