Low Viscosity Sugar Compositions for Fuel Conversion
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Solution Overview
Problem
The production of alternative fuels through chemical conversion of carbon-containing substrates faces challenges such as catalyst fouling and poisoning, along with unacceptably low yields and unfavorable reaction conditions, making the process industrially unattractive.
Innovation Solution
The development of sugar compositions derived from hydrolysis of cellulose-containing substrates, which are refined to reduce viscosity, inorganic material levels, and degradation products, creating a substrate suitable for chemically catalyzed conversion processes with improved catalyst performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If chemical conversion of carbon-containing substrates is used to produce alternative fuels, then alternative fuel production is achieved, but catalyst fouling and poisoning occur with unacceptably low yields
Solution Approach 1:
The patent applies preliminary action by performing extensive pretreatment of the carbon-containing substrate before chemical conversion. The substrate undergoes hydrolysis, filtration, and purification steps to remove impurities that would cause catalyst fouling. This preliminary preparation ensures the substrate is ready for efficient catalytic conversion, resolving the contradiction by preventing catalyst deactivation before it occurs.
Solution Approach 2:
The patent extracts harmful impurities from the carbon-containing substrate through filtration and purification steps. Specifically, the substrate is filtered to remove particulates and purified to eliminate compounds that would poison the catalyst. By removing these harmful elements before conversion, the process achieves both high yield and sustained catalyst performance.
2Reliability
If refined sugar compositions are used as substrates, then catalyst fouling is reduced and yields improve, but additional processing steps are required
Solution Approach 1:
The patent merges multiple functions into integrated processing steps. The hydrolysis, filtration, and concentration steps are combined into a streamlined sequence where each step serves multiple purposes. For example, filtration removes both particulates and soluble impurities, while concentration simultaneously prepares the substrate for conversion and reduces water content that would interfere with catalysis. This integration reduces overall process complexity while maintaining catalyst performance.
3Productivity
If substrate purification is performed to reduce viscosity and impurities, then conversion efficiency improves, but processing time and complexity increase
Solution Approach 1:
The patent applies parameter changes by optimizing physical conditions during processing. Temperature, pressure, and pH are carefully controlled to maximize purification efficiency while minimizing processing time. For example, hydrolysis is conducted at elevated temperatures to accelerate impurity removal, and filtration is performed under pressure to reduce time. These parameter optimizations achieve high conversion efficiency without excessive time investment.
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 sugar compositions result in a more efficient and attractive chemical conversion process by reducing catalyst fouling and improving yields, with specific formulations achieving lower viscosity and reduced levels of impurities, enhancing the industrial viability of the process.
Implementation Method 1
the sugars in the compositions result from hydrolysis of a cellulose containing substrate
Data Source
AI summary
A sugar composition comprising: at least 40% dissolved solids in an aqueous solution having a viscosity at least 10% lower than a 42 DE (Dextrose Equivalents) reference solution with a same dissolved solids concentration at a given temperature.