Ester-Based Composition Preparation with Stepwise Reactor Pressurization
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Solution Overview
Problem
Existing continuous esterification reaction systems with multiple reactors suffer from reduced heat transfer performance, reactor productivity, and total reactor productivity due to spare heat transfer performance in downstream reactors.
Innovation Solution
A method involving a stepwise pressurization operation in a continuous esterification reaction system with multiple reactors, where downstream reactors are pressurized relative to upstream reactors, increasing reaction temperature and reactivity to enhance productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a continuous esterification reaction system with multiple reactors connected in series is used, then the esterification reaction can be performed continuously, but the heat transfer performance and reactor productivity decrease in downstream reactors due to spare heat transfer performance
Solution Approach 1:
The patent applies parameter changes by varying the heat transfer area of heat exchangers in different reactors. Specifically, the heat transfer area is increased in downstream reactors to compensate for the decreasing reaction rate, thereby maintaining optimal heat transfer performance throughout the reaction sequence and eliminating the spare heat transfer performance waste.
2Productivity
If the same heat transfer performance is provided to all reactors, then the system is simple to operate, but the reaction rate decreases in downstream reactors leading to reduced total reactor productivity
Solution Approach 1:
The patent implements local quality by providing different heat transfer areas to heat exchangers in different reactors based on their specific needs. Each reactor's heat exchanger is designed with a heat transfer area optimized for its position in the reaction sequence, with downstream reactors receiving larger heat transfer areas to maintain reaction efficiency.
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
Improves heat transfer performance, reactor productivity, and total reactor productivity by optimizing pressure conditions in each reactor, maximizing heat transfer efficiency and reaction efficiency.
Implementation Method 1
supplying heat to the reactor using a heat medium
Implementation Method 2
downstream reactors are pressurized relative to upstream reactors, increasing reaction temperature
Data Source
Figure 1
AI summary
Provided is a method for preparing an ester-based composition using a continuous reaction system in which a plurality of reactors are connected in series, wherein the heat transfer performance, reactor productivity, and total reactor productivity can be improved by controlling operating conditions.