Hydroconversion of Renewable Feedstocks Using Multi-Metallic Catalysts
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Solution Overview
Problem
Current methods lack efficient processes for converting renewable feedstocks into valuable oleochemicals like fatty alcohols, esters, and normal paraffins, which are essential for sustainable industrial applications, due to the depletion of fossil fuels and increasing prices.
Innovation Solution
A hydrocarbon conversion process involving contacting renewable feedstocks with a bulk multi-metallic catalyst under specific hydroprocessing conditions, including temperatures between 383°F to 662°F and pressures of 800 to 2000 psig, to produce fatty alcohols, aliphatic monoesters, and normal paraffins, utilizing a catalyst precursor that includes Group VIII and Group VIB metals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hydroprocessing methods are used, then the conversion of renewable feedstocks to oleochemicals can be achieved, but the process efficiency and product selectivity are insufficient
Solution Approach 1:
The patent applies parameter changes by optimizing hydroprocessing conditions including temperature (383°F to 662°F), pressure (800 to 2000 psig), and catalyst composition (Group VIII and Group VIB metals in specific ratios) to simultaneously achieve high conversion rates and selective product formation. The catalyst metal ratio of Group VIII to Group VIB is specifically controlled to enhance both activity and selectivity.
Solution Approach 2:
The patent employs composite catalyst materials combining Group VIII metals (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) with Group VIB metals (Cr, Mo, W) to create a multi-metallic catalyst system. This composite catalyst structure enables synergistic effects that improve both conversion efficiency and product selectivity for fatty alcohols, esters, and paraffins.
2Productivity
If fossil fuels are used as feedstocks, then industrial oleochemicals can be produced efficiently, but the resource sustainability is compromised
Solution Approach 1:
The patent makes the hydroprocessing catalyst system universal by designing it to effectively process various renewable feedstocks including vegetable oils, animal fats, and waste oils. The multi-metallic catalyst composition and optimized hydroprocessing conditions enable the same system to convert different triglyceride-based feedstocks into valuable oleochemicals, replacing fossil fuel feedstocks while maintaining production efficiency.
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 process achieves high conversion rates of triglycerides into desired products, with selectivity to fatty alcohols, esters, and paraffins, offering a sustainable alternative to fossil fuel-based materials while optimizing production yields and product selectivity.
Implementation Method 1
contacting the feedstock with a bulk multi-metallic catalyst under hydroprocessing conditions
Implementation Method 2
hydroconversion of renewable feedstocks to oleochemicals such as fatty alcohols, esters, and normal paraffins
Data Source
AI summary
A hydrocarbon conversion process comprises contacting a renewable feedstock under hydroprocessing conditions with a bulk catalyst to form oleochemicals such as fatty alcohols, esters, and normal paraffins. Advantageously, the reaction conditions can be selected to directly convert the renewable feedstock to the desired product(s).