Residual Oil Yield Prediction via Near-Infrared Spectroscopy
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Solution Overview
Problem
Traditional methods for evaluating residual oil to determine coke, gas, and distillate yields through processing techniques like delayed coking are costly and time-consuming, requiring extensive processing and analysis.
Innovation Solution
A system and method to directly analyze residual oil streams to calculate coke, gas, and distillate yields using carbon residue values, allowing for rapid evaluation without the need for extensive processing, utilizing equations based on ASTM standards to determine yields and coke quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional delayed coking processing is used to determine coke, gas, and distillate yields, then accurate product yield data is obtained, but processing time extends to months and costs increase significantly
Solution Approach 1:
The patent uses near-infrared spectroscopy to create a spectral copy or fingerprint of the residual oil sample, which then serves as a proxy for determining coke, gas, and distillate yields through calibration models, eliminating the need for actual delayed coking processing
Solution Approach 2:
The patent performs preliminary calibration by correlating near-infrared spectral data with actual delayed coking results from historical samples, creating predictive models that can quickly estimate yields from new samples without requiring actual processing
2Measurement precision
If traditional delayed coking processing is used to evaluate residual oil, then accurate coke quality assessment is achieved, but extensive processing and analysis are required
Solution Approach 1:
The patent replaces the complex mechanical and chemical delayed coking processing system with a non-invasive near-infrared spectroscopic measurement system, using light absorption characteristics to predict coke quality parameters
3Productivity
If rapid evaluation methods are used for residual oil, then processing time is reduced, but measurement accuracy may be compromised
Solution Approach 1:
The patent performs preliminary calibration using actual delayed coking data from representative samples to build predictive models, enabling rapid yet accurate yield determination for future samples through near-infrared spectroscopy
Solution Approach 2:
The near-infrared spectral data serves as a rapid copy or proxy for the complex chemical composition information, allowing quick assessment while maintaining accuracy through proper calibration against actual processing results
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
Enables producers to benchmark residual oil quality and value products quickly, reducing processing time from months to just one hour and providing accurate results matching those obtained through actual delayed coking processes.
Implementation Method 1
The assay values are determined from the chemical composition of the residual oil sample, as determined by near-infrared spectroscopy
Data Source
AI summary
A system and a method for calculating the coke, gas, and distillate yields that could be derived from residual oil if it were to be subjected to processing methods such as delayed coking, hydroprocessing, gasification, solvent deasphalting, and fluid catalytic cracking, without first performing those processing methods.