Spectroscopic Alkylation Control for Real-Time Property Convergence
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Solution Overview
Problem
Conventional refinery processes face challenges in accurately and responsively monitoring and controlling alkylation processes due to delayed and inaccurate information acquisition, leading to suboptimal production of alkylation-related products.
Innovation Solution
Implementing spectroscopic analyzers to analyze olefin and paraffin feed samples, as well as unit materials, and using controllers to prescriptively control the alkylation process based on predicted properties, ensuring materials produced meet target properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional laboratory analysis methods are used to monitor alkylation processes, then comprehensive material characterization is achieved, but response time is excessively long (hours to weeks)
Solution Approach 1:
The patent replaces conventional mechanical/chemical laboratory analysis methods with spectroscopic analysis (NIR, Mid-IR, Raman spectroscopy). This substitution enables real-time or near-real-time monitoring of alkylation processes while maintaining comprehensive material characterization capability, directly resolving the contradiction between measurement precision and response time
Solution Approach 2:
The patent introduces spectroscopic analyzers as intermediary devices that provide real-time process information to control systems. These analyzers act as mediators between the alkylation process and control mechanisms, enabling timely adjustments without waiting for lengthy laboratory analysis results
2Productivity
If real-time monitoring and control systems are implemented, then process optimization responsiveness is improved, but system complexity increases
Solution Approach 1:
The patent employs multi-functional spectroscopic analyzers that can simultaneously monitor multiple process parameters (olefin feed properties, paraffin feed properties, unit material properties) using the same hardware platform. This universality reduces overall system complexity while maintaining real-time monitoring capabilities across multiple dimensions
Solution Approach 2:
The patent implements feedback control loops where spectroscopic analyzer measurements are continuously fed back to control systems, which automatically adjust alkylation process parameters. This closed-loop feedback mechanism enables responsive process optimization while automating control decisions, reducing the operational complexity burden
3Loss of information
If spectroscopic analyzers are used for real-time analysis, then information accuracy and responsiveness are improved, but manufacturing precision of product properties may be compromised without prescriptive control
Solution Approach 1:
The patent implements prescriptive control that uses real-time spectroscopic data to predict future product properties and proactively adjusts process parameters before deviations occur. This preliminary action ensures that product properties converge on target specifications by anticipating and preventing potential quality issues
Solution Approach 2:
The patent enables the alkylation process to self-regulate through automated prescriptive control systems that use real-time spectroscopic information to automatically adjust operating conditions. This self-service capability maintains manufacturing precision by continuously steering the process toward target product properties without constant human intervention
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 the production of alkylation-related products with desired characteristics efficiently by providing real-time, accurate monitoring and control, causing the process to converge on target properties.
Implementation Method 1
analyzing, via a first spectroscopic analyzer to provide olefin feed sample spectra, an olefin feed sample
Data Source
AI summary
Systems, assemblies, apparatuses, and processes to enhance an alkylation process associated with a refining operation may include analyzing samples of an olefin feed and a paraffin feed supplied to one or more alkylation processing units associated with the refining operation, unit materials, and/or a catalyst, via one or more spectroscopic analyzers. The systems and processes further may include prescriptively controlling, via one or more alkylation process controllers, based at least in part on feed properties, unit material properties, and/or catalyst properties, the one or more alkylation processing units, so that the prescriptively controlling results in causing the alkylation process to produce unit materials and/or downstream materials having properties within selected ranges of target properties, thereby to cause the alkylation process to achieve material outputs that more accurately and responsively converge on one or more of the target properties.