2-Ethyl Hexanol Recovery via Segmented Distillation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional 2-ethyl hexanol production processes have low energy efficiency and limited recovery efficiency, resulting in high production costs and low productivity due to the inefficient use of multiple distillation columns in recovering 2-ethyl hexanol from crude alcohol.
Innovation Solution
A method involving multiple distillation columns where the crude alcohol is distilled into a distillate and a bottom stream, with further distillation of the distillate in a second column and the bottom stream in a third column, allowing for the recovery of additional 2-ethyl hexanol with minimal energy consumption, increasing productivity and reducing energy costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional distillation columns are used to recover 2-ethyl hexanol from crude alcohol, then 2-ethyl hexanol can be recovered, but energy efficiency is low and recovery efficiency is limited
Solution Approach 1:
The patent divides the crude alcohol feed into two separate distillation paths: a distillate stream processed through a first distillation column and a bottom stream processed through a second distillation column. This segmentation allows each column to be optimized for specific separation tasks, improving overall recovery efficiency while managing energy consumption more effectively than a single conventional column system.
Solution Approach 2:
The patent introduces a third distillation column that processes the bottom stream from the second distillation column, adding an additional dimensional layer to the separation process. This three-column configuration creates a more comprehensive separation network that recovers 2-ethyl hexanol from multiple streams, significantly improving recovery efficiency while distributing energy consumption across multiple optimized units.
2Productivity
If conventional purification process is used, then 2-ethyl hexanol can be recovered, but production cost is high due to low productivity
Solution Approach 1:
By segmenting the purification process into three specialized distillation columns, each column can be optimized for specific separation requirements, improving overall productivity through more efficient mass transfer and reduced processing time, thereby lowering production costs despite the increased number of units.
Solution Approach 2:
The patent optimizes operating parameters (temperature, pressure, reflux ratios) for each of the three distillation columns based on their specific separation tasks. This parameter optimization maximizes 2-ethyl hexanol recovery in each column, improving overall productivity and reducing energy consumption per unit of product, which directly reduces production costs.
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 method enhances 2-ethyl hexanol recovery efficiency and productivity while reducing energy consumption per unit produced, providing a technical advantage over conventional methods by maximizing the recovery of 2-ethyl hexanol with minimal added energy.
Implementation Method 1
distilling, in a first distillation column, the crude alcohol to produce a first distillate
Data Source
AI summary
Systems and methods of recovering 2-ethyl hexanol from crude alcohol are disclosed. The crude alcohol originates from a reactor that produces 2-ethyl hexanol and is first distilled in a first distillation column The distillate from the first distillation column is then further distilled in a second distillation column. A side stream is drawn from the second distillation column and recycled to the reactor that produces 2-ethyl hexanol. The bottom stream from the second distillation column is mixed with the bottom stream from the first distillation column. The combined stream is further distilled in a third distillation column to produce a 2-ethyl hexanol product stream.