Ethanol Production Starch Conversion via Fiber Segmentation
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Solution Overview
Problem
Current methods for ethanol production from corn and other grains are inefficient in converting starch from fiber components, as they require heating large amounts of material to high temperatures, leading to excessive steam usage and unconverted starch passing through the process.
Innovation Solution
Separating fiber components from ground corn using a flour screening device, allowing only the fiber to be exposed to high temperatures above 250°F to release embedded starch, which is then blended back with the starch-containing flour stream, reducing the amount of material needing high-temperature treatment and thus minimizing steam usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all ground corn components are heated to high temperatures to release embedded starch from fiber, then starch conversion efficiency is improved, but steam consumption increases excessively
Solution Approach 1:
The ground corn is divided into two separate streams based on particle size: fine particulate flour containing most starch and larger particle fiber components with embedded starch. This segmentation allows selective processing where only the fiber stream receives high-temperature treatment, reducing overall steam consumption while maintaining starch conversion efficiency
Solution Approach 2:
The fiber components containing embedded starch are extracted and separated from the main starch-containing flour stream. By isolating only the fiber portion for high-temperature treatment, the process minimizes the amount of material exposed to high steam consumption while ensuring embedded starch is released for fermentation
2Productivity
If high temperature processing is applied to all ground corn material, then embedded starch in fiber is released for fermentation, but the amount of material requiring treatment is excessive
Solution Approach 1:
The ground corn is segmented into fine particulate flour and larger particle fiber components through screening. This division reduces the quantity of material requiring high-temperature treatment to only the fiber stream, while the starch-rich fine flour passes through untreated, thereby reducing overall material processing requirements
Solution Approach 2:
Different quality treatment is applied to different particle size fractions: the fiber stream receives high-temperature treatment to release embedded starch, while the fine particulate flour stream requires no high-temperature treatment as its starch is already accessible. This localized approach optimizes starch availability while minimizing unnecessary material treatment
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 starch conversion efficiency by reducing steam consumption and making more starch available for ethanol production, as only half of the corn components need to be treated at high temperatures, optimizing the ethanol production process.
Implementation Method 1
the material will be exposed to very high temperature conditions, above 250° F., to allow the embedded starch components in the fiber to be removed from fiber
Data Source
AI summary
A system and method for producing ethanol from dry-milled corn or other grains includes the steps of separating fiber components and embedded starch components from the grain. The fiber components and embedded starch components are cooked at high temperatures and fermented to produce ethanol.