Guided Gas Stirrer for Hydrogenation Yield
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing polyphenylene ether amine are inefficient, leading to suboptimal yields and economic inefficiencies in the production process.
Innovation Solution
A method involving a hydrogenation reaction using a guided gas stirrer in a hydrogenation reaction tank, where a hydrogenation catalyst is added to a nitro polyphenylene ether solution, and hydrogen gas is introduced under controlled pressure and temperature, with the stirrer enhancing gas contact and distribution to improve reaction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hydrogenation methods are used, then the production process is simple, but the yield of polyphenylene ether amine is low and economic efficiency is poor
Solution Approach 1:
The gas distributing stirrer combines multiple functions into a single device: it distributes hydrogen gas uniformly throughout the reaction solution, provides mechanical stirring to enhance mass transfer, and controls gas flow patterns. This multi-functionality resolves the contradiction by achieving high yield through improved reaction efficiency without requiring multiple separate equipment components.
Solution Approach 2:
The invention introduces hydrogen gas through the hollow rotation shaft of the gas distributing stirrer, utilizing pneumatic principles to deliver gas directly into the liquid phase. The gas extracting holes and gas exhausting holes create controlled gas flow patterns that enhance hydrogen dissolution and mass transfer, thereby improving reaction yield while maintaining a relatively simple system configuration.
2Productivity
If hydrogen gas is introduced at high pressure, then the hydrogenation reaction efficiency improves, but the safety risks and equipment requirements increase
Solution Approach 1:
The gas distributing stirrer divides the hydrogen gas introduction into multiple gas extracting holes distributed along the hollow rotation shaft. This segmentation allows hydrogen gas to be introduced at multiple locations simultaneously, achieving efficient hydrogenation reaction while distributing the pressure load and reducing the risk associated with concentrated high-pressure gas introduction.
Solution Approach 2:
The gas distributing stirrer acts as an intermediary device between the hydrogen gas source and the reaction solution. It mediates the high-pressure hydrogen gas by distributing it through multiple holes at controlled rates, transforming the potentially hazardous high-pressure direct injection into a safer, more controlled multi-point gas dissolution process that maintains 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
This method significantly increases the yield of polyphenylene ether amine to 95% or higher, enhancing economic efficiency by ensuring high catalyst activity and efficient heat dissipation.
Implementation Method 1
a hydrogenation catalyst is added to the reaction solution... to hydrogenate the nitro polyphenylene ether in the reaction solution to the polyphenylene ether amine
Implementation Method 2
the hollow rotation shaft introduces the hydrogen gas from a top of the reaction solution through the gas extracting hole of the hollow rotation shaft and transmits the hydrogen gas into the reaction solution through the gas exhausting hole of the hollow rotation shaft, and the hydrogen gas in the reaction solution is stirred by the vane and evenly distributed
Implementation Method 3
a hydrogenation reaction is carried out... to hydrogenate the nitro polyphenylene ether in the reaction solution to the polyphenylene ether amine
Data Source
AI summary
A method for producing polyphenylene ether amine includes following steps. In step (a), a hydrogenation reaction tank is provided; a guided gas stirrer is disposed in the hydrogenation reaction tank. In step (b), a reaction solution is placed in the hydrogenation reaction tank, and the reaction solution is nitro polyphenylene ether dissolved in a solvent. In step (c), a hydrogenation catalyst is added to the reaction solution. In step (d), a hydrogen gas is introduced into the hydrogenation reaction tank. In step (e), the guided gas stirrer is activated. In step (f), a hydrogenation reaction is carried out on the conditions that a reaction temperature is 50-200 degrees Celsius and a reaction time is 1-20 hours, so as to hydrogenate the nitro polyphenylene ether in the reaction solution to polyphenylene ether amine. In step (g), the reaction solution is cooled down to a room temperature; the hydrogenation catalyst is removed.