Sooting Tendency Calculation via Reformulyzer Grouping
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Solution Overview
Problem
Current methods for determining the sooting tendency of fuels are complex, time-consuming, and costly, involving individual component analysis which is not always comprehensive, leading to deviations in calculations due to unknown components.
Innovation Solution
A simplified method using gas-chromatographic component analysis and reformulyzer analysis according to ISO 22854, which classifies hydrocarbon types and oxygenates into functional supergroups and subgroups, assigns a yield sooting index to each subgroup, and calculates a total yield sooting index using a database of YSI values for individual components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual component analysis is performed to determine sooting tendency, then measurement precision is improved, but device complexity and loss of time increase significantly
Solution Approach 1:
The patent segments the complex fuel mixture into reformulyzer groups (C1-C12 hydrocarbons, oxygenates, aromatics, etc.) based on carbon number and chemical class. This segmentation allows determination of sooting tendency through group-level analysis rather than requiring analysis of every individual component, thus reducing device complexity while maintaining adequate measurement precision through the representative nature of the groups
Solution Approach 2:
The patent creates a universal calculation method that can determine sooting tendency for any fuel mixture by using reformulyzer group compositions and standardized YSI values. This multi-functional approach eliminates the need for separate individual component analysis procedures, reducing both device complexity and analysis time while maintaining measurement precision through the standardized calculation framework
2Measurement precision
If individual component analysis is performed to determine sooting tendency, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent performs preliminary classification of the fuel mixture into reformulyzer groups with determined volumetric proportions before the actual sooting tendency calculation. This preliminary action organizes the complex mixture data into manageable groups, enabling faster subsequent calculation compared to analyzing each individual component separately, thus reducing loss of time while maintaining measurement precision through the structured approach
Solution Approach 2:
The patent applies partial action by analyzing only the reformulyzer groups that are present in the fuel mixture rather than performing complete individual component analysis on all possible components. This selective approach reduces analysis time significantly while maintaining measurement precision by focusing on the actually present components grouped by their sooting characteristics
3Measurement precision
If individual component analysis is performed to determine sooting tendency, then measurement precision is improved, but cost increases
Solution Approach 1:
The patent segments the analysis into reformulyzer groups that can be determined using standard gas chromatography methods already widely available in the industry. This segmentation approach allows use of existing equipment and methods rather than requiring complex individual component analysis infrastructure, thus reducing determination cost while maintaining adequate measurement precision through the group-level representation
Solution Approach 2:
The patent uses standardized YSI values from databases as representative copies for entire reformulyzer groups rather than requiring direct measurement of each individual component's sooting tendency. This copying approach significantly reduces determination cost by eliminating the need for extensive experimental data collection on every component while maintaining measurement precision through the use of established reference values
4Productivity
If reformulyzer group analysis is used instead of individual component analysis, then device complexity and loss of time are reduced, but measurement precision may worsen due to grouping
Solution Approach 1:
The patent changes the parameter of analysis from individual component level to reformulyzer group level (classified by carbon number and chemical class). This parameter change increases productivity by reducing the number of components to analyze while maintaining measurement precision through the selection of groups with similar sooting characteristics and the use of standardized YSI values that represent the average behavior of components within each group
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 reduces the effort and cost of determining the sooting tendency by eliminating the need for individual component analysis, providing a more robust and standardized result with fewer unknowns, enabling efficient comparison and evaluation of fuels and additives.
Implementation Method 1
gas-chromatographic component analysis of hydrocarbon types and oxygenates
Data Source
AI summary
A method for determining the standardized sooting tendency of a substance mixture and representative indices for calculating an overall sooting tendency. The sooting tendency is determined using gas-chromatographic component analysis of hydrocarbon types and oxygenates of a substance mixture, in particular of a fuel or of an additive via a reformulyzer analysis. A standardized total yield sooting index) of substance mixtures according to YSITotal=ΣYSIi·Vi/100 is determined, wherein the volumetric proportion (Vi) of each reformulyzer subgroup (i) is multiplied by that of the yield sooting index (YSIi) associated with the reformulyzer subgroup (i), according to which the determined values are summated to the total yield sooting index (YSITotal). Furthermore, method variants are described for determining yield sooting indices (YSIi-M, YSIi-Mid, YSIi-GewM) representing the yield sooting index (YSIi) associated with the subgroups (i).