Hydroconversion of Renewable Feedstocks Using Composite Catalysts
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Solution Overview
Problem
Current methods lack efficient processes for converting renewable feedstocks into oleochemicals such as fatty alcohols, esters, and normal paraffins, which are essential for sustainable industrial applications, as they rely on finite fossil fuels and are not environmentally friendly.
Innovation Solution
A hydrocarbon conversion process involving renewable feedstocks contacted with a supported catalyst comprising Group VIII and Group VIB metals under specific hydroprocessing conditions, including temperatures between 195°C to 350°C and pressures of 5.5 to 13.8 MPa gauge, to produce fatty alcohols, aliphatic monoesters, and normal paraffins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional methods are used to produce oleochemicals, then the process relies on finite fossil fuels, but the environmental sustainability and renewability are poor
Solution Approach 1:
The patent changes the fundamental parameter of feedstock source from fossil-based to renewable-based (triglycerides, animal fats, vegetable oils). This parameter change enables the process to achieve both sustainability and renewability by using readily available renewable resources that can be continuously replenished, directly resolving the contradiction between environmental sustainability and reliability of supply
2Productivity
If existing conversion processes are used for renewable feedstocks, then the feedstock can be processed, but the conversion efficiency to desired oleochemicals is insufficient
Solution Approach 1:
The patent employs a composite catalyst system combining Group VIII metals (Ru, Rh, Pd, Os, Ir, Pt) with Group VIB metals (Cr, Mo, W) supported on appropriate supports. This composite catalyst structure enables simultaneous high conversion efficiency and selectivity for desired oleochemical products (fatty alcohols, esters, paraffins) by leveraging the complementary properties of different metal components working together
Solution Approach 2:
The patent optimizes reaction parameters including temperature (383-662°F or 195-350°C), pressure (800-2000 psig or 5.5-13.8 MPa gauge), and catalyst composition to achieve both high conversion rates and selective product formation. By carefully controlling these parameters, the process simultaneously maximizes productivity and manufacturing precision
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 oleochemicals, with selectivity and yield optimization, enabling the production of sustainable industrial products while reducing reliance on fossil fuels.
Implementation Method 1
contacting the feedstock with a supported metal catalyst under hydroprocessing conditions
Implementation Method 2
hydroprocessing conditions include a temperature of from 383° F. to 464° F. (195° C. to 240° C.) and a total reaction pressure of from 800 to 2000 psig
Data Source
AI summary
A hydrocarbon conversion process comprises contacting a renewable feedstock under hydroprocessing conditions with supported catalyst comprising at least one metal selected from the group consisting of Group VIII metals, Group VIB metals 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).