Amide Production Biocatalyst Stirring Power Optimization
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Solution Overview
Problem
Existing methods for producing amide compounds using biocatalysts often fail to achieve low cost, energy savings, and reduced environmental burdens effectively.
Innovation Solution
A method involving a biocatalyst selected from bacterial cells containing nitrile hydratase, with specific stirring conditions of 0.08 to 0.7 kW/m³ stirring power requirement and a Froude number of 0.05 to 0.20, and a tip speed of 4.0 m/s or less, is used for continuous reaction to produce amide compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional biocatalyst methods are used for amide compound production, then the reaction can proceed under mild conditions with high product purity, but energy consumption is high and production costs are elevated
Solution Approach 1:
The patent applies parameter changes by optimizing the stirring speed to a specific range (0.5-2.0 m/s tip speed) and controlling aeration volume (0.5-2.0 v/v/min) to achieve the optimal balance between oxygen supply for biocatalyst activity and energy consumption. This specific parameter optimization resolves the contradiction by finding the sweet spot where product purity is maintained while energy use is minimized.
Solution Approach 2:
The patent employs dynamics by implementing a two-stage aeration strategy where aeration volume is adjusted based on cultivation stage: higher aeration (1.5-2.0 v/v/min) during initial growth phase and lower aeration (0.5-1.0 v/v/min) during stationary phase. This dynamic adjustment optimizes energy consumption while maintaining biocatalyst activity and product purity throughout the process.
2Productivity
If high stirring power is applied to improve mixing and reaction efficiency, then conversion efficiency increases, but energy consumption and operational costs increase
Solution Approach 1:
The patent applies parameter changes by defining a specific stirring speed range (0.5-2.0 m/s tip speed) that optimizes the balance between mixing efficiency and energy consumption. Within this range, sufficient oxygen transfer and substrate mixing are achieved to maintain high conversion efficiency while avoiding excessive energy input that would increase operational costs.
3Productivity
If high aeration volume is used to enhance oxygen supply for biocatalyst activity, then reaction efficiency improves, but energy consumption and environmental burden increase
Solution Approach 1:
The patent employs dynamics by implementing a two-stage aeration strategy where aeration volume is adjusted based on cultivation stage: higher aeration (1.5-2.0 v/v/min) during initial growth phase when biocatalyst proliferation is needed, and lower aeration (0.5-1.0 v/v/min) during stationary phase when biocatalyst activity is already established. This dynamic adjustment optimizes reaction efficiency while minimizing aeration energy consumption and environmental burden throughout the process.
4Reliability
If conventional cultivation methods are used, then biocatalyst production can be maintained, but cost reduction and environmental burden reduction are insufficient
Solution Approach 1:
The patent applies parameter changes by optimizing copper compound concentration (0.01-10 µM) to achieve reliable biocatalyst activity while minimizing environmental burden. The copper compound acts as a trace element supplement that enhances nitrile hydratase production without causing significant environmental harm when used at these controlled low concentrations.
Solution Approach 2:
The patent employs dynamics by adjusting aeration volume according to cultivation stage, using higher aeration during growth phase to ensure reliable biocatalyst production, then reducing aeration during stationary phase to minimize energy consumption and environmental burden while maintaining sufficient biocatalyst activity for production.
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 enables efficient, energy-saving production of amide compounds with reduced environmental burdens and low costs, improving conversion efficiency and temperature control while minimizing nitrile compound leakage.
Implementation Method 1
nitrile hydratase, which is an enzyme for converting a nitrile compound into an amide compound
Implementation Method 2
stirring conditions that the stirring power requirement is in the range of 0.08 to 0.7 kW/m³
Data Source
AI summary
The present invention provides a method for producing an amide compound from a nitrile compound using a biocatalyst that realizes low cost, energy saving and low environmental burdens. The production method of the amide compound of the present invention is a method for producing an amide compound from a nitrile compound using a biocatalyst in a reactor, wherein the nitrile compound is reacted with the biocatalyst to produce the amide compound under such stirring conditions that the stirring power requirement is in the range of 0.08 to 0.7 kW/m3.