Diester Esterification Control for Faster, Lower-Energy Production
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing batch processes for producing ester-based plasticizers are costly and inefficient, requiring high energy expenditure and facility modifications, making them unsuitable for industrial application.
Innovation Solution
A method for producing diester-based materials by controlling reaction conditions, including temperature and alcohol and inert gas input amounts, to improve reaction rate and reduce energy consumption, optimizing processing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If batch process is used to produce ester-based plasticizer, then reaction can be simplified and facilities can be reduced, but high costs for adding facilities or changing lines are required and productivity is low
Solution Approach 1:
The patent applies dynamics by transitioning from a static batch process to a dynamic continuous process. The continuous esterification reaction allows for real-time adjustment of reaction conditions and material flow, eliminating the need for complex facility modifications while significantly improving productivity through uninterrupted production.
Solution Approach 2:
The patent implements continuity of useful action through a continuous reaction process where reactants are continuously fed into the reactor and products are continuously removed. This eliminates the start-stop nature of batch processing, maintaining productive action throughout the operation and thereby increasing productivity without requiring additional facilities.
2Manufacturing precision
If batch process with gas-liquid separation system is used, then non-reactants can be removed efficiently, but energy expenditure is high
Solution Approach 1:
The continuous process maintains continuous removal of water (non-reactant) from the reaction zone, preventing its accumulation and shifting the equilibrium toward product formation. This continuous action achieves high product purity without the energy-intensive batch separation cycles, as the separation occurs continuously during the reaction rather than requiring separate energy-consuming separation steps.
Solution Approach 2:
The patent utilizes parameter changes by adjusting temperature, pressure, and flow rates to optimize the continuous reaction and separation process. By controlling these parameters dynamically, the system achieves efficient separation of non-reactants and high product purity while minimizing energy expenditure compared to conventional batch methods with gas-liquid separation systems.
3Productivity
If reaction temperature is increased to improve reaction rate, then productivity increases, but energy consumption increases
Solution Approach 1:
The patent applies parameter changes by optimizing temperature, pressure, and residence time to achieve the highest possible reaction rate at the lowest energy cost. The continuous process allows for precise control of these parameters, maintaining the reaction at the optimal point where productivity is maximized while energy consumption is minimized, avoiding the need for excessive temperature increases.
Solution Approach 2:
The continuous reaction process maintains optimal reaction conditions continuously, preventing energy waste associated with heating and cooling cycles in batch processing. By keeping the reaction running at steady state at the optimal temperature, the system achieves high productivity without the energy expenditure required to repeatedly heat and cool the reaction mixture, thereby resolving the contradiction between reaction rate and energy consumption.
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
The method enhances productivity and efficiency while reducing energy costs, achieving a fast reaction rate and high product purity.
Implementation Method 1
obtaining a product mixture including a diester-based material and water by reacting the raw material mixture in the presence of a catalyst
Data Source
AI summary
A method of preparing a raw material mixture by mixing a dicarboxylic acid and a C4-10 mono-alcohol, and obtaining a product mixture including a diester-based material and water by reacting the raw material mixture in the presence of a catalyst. In the first step, at least one among a reactor temperature (Condition A), an alcohol input amount (Condition B), and an inert gas input amount (Condition C) is controlled, and the distinction between a beginning stage of a reaction and an ending stage of the reaction in Conditions A to C above is based on a reaction control point. The reaction control point is a point of time selected at which a conversion rate of the reaction is between 10% and 80%. This method produces a diester-based material with improved reactivity and improved energy expenditure.