Hydroxyalkanoic Acid Derivatives as Fuel Additives
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Solution Overview
Problem
The increasing demand for renewable energy sources due to fossil fuel exhaustion and environmental pollution necessitates the development of sustainable biofuels that do not compete with food resources and have improved combustion properties.
Innovation Solution
The use of lower alkyl esters and salts of hydroxyalkanoic acid, derived from polyhydroxyalkanoates produced by microorganisms, as biofuels or fuel additives, which offer high combustion heat and zero pollutant emissions, and can be combined with conventional fuels to enhance their properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional biofuels like ethanol are produced on large scale, then renewable energy supply is improved, but land area requirement increases and grain price is affected
Solution Approach 1:
The patent changes the chemical composition parameters by using hydroxyalkanoic acid derivatives (methyl esters, ethyl esters, salts) instead of conventional ethanol, achieving high combustion heat (45-50 MJ/kg) without requiring large land areas for crop production
Solution Approach 2:
The patent utilizes waste microorganisms and their metabolic products as raw materials, converting biological waste into valuable fuel chemicals, thereby avoiding competition with food crops for land resources
2Use of energy by moving object
If conventional biofuels are used, then renewable energy is provided, but combustion pollution and environmental impact remain
Solution Approach 1:
The patent employs oxidation processes during the production of hydroxyalkanoic acid derivatives from microorganisms, achieving complete combustion with zero pollutant emissions and high combustion heat, eliminating the harmful factors associated with conventional biofuel combustion
3Use of energy by moving object
If hydroxyalkanoic acid derivatives are used as fuel additives, then combustion heat is improved, but production process complexity increases
Solution Approach 1:
The patent utilizes the natural metabolic pathways of microorganisms to produce hydroxyalkanoic acid derivatives, allowing the microorganisms to self-convert waste substrates into valuable fuel chemicals through their own enzymatic systems, thereby simplifying the production process
Solution Approach 2:
The patent introduces specific catalysts and intermediaries in the chemical transformation process, enabling efficient conversion of hydroxyalkanoic acid to its ester derivatives and salts, thereby managing production complexity through controlled chemical mediation
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
These hydroxyalkanoic acid derivatives provide a sustainable, high-combustion heat fuel option with zero emissions, capable of improving the antiknock properties of gasoline and maintaining high combustion efficiency when mixed with other fuels, thus addressing the limitations of current biofuels like ethanol.
Implementation Method 1
Polyhydroxyalkanoates (PHA) are a kind of energy and carbon source storage materials accumulated by microorganisms under circumstances where the growth of microorganisms is unbalanced
Implementation Method 2
The ester bonds in PHA can be broken to generate monomers under alcoholysis catalyzed by sulfuric acid
Implementation Method 3
carboxyls (—COOH) in hydroxyalkanoic acid (HA) monomers generated from the degradation of PHA can react with the hydroxyls (—OH) in methanol or ethanol to generate corresponding methyl 3-hydroxyalkanoate or ethyl 3-hydroxyalkanoate
Implementation Method 4
These hydroxyalkanoic acid derivatives provide a sustainable, high-combustion heat fuel option with zero emissions
Data Source
AI summary
The present invention is related to the use of hydroxyalkanoic acid derivatives as a fuel additive. In particular, the present invention provides the use of lower alkyl esters and/or salts of hydroxyalkanoic acid as biofuels and/or fuel additives. The present invention also provides a fuel composition including at least one fuel and lower alkyl esters and/or salts of hydroxyalkanoic acid.