Unsupported Ni-Mo-W Catalyst for Selective Ring-Opening
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Solution Overview
Problem
Current methods for producing lube base oils with high viscosity index (VI) are limited by expensive raw materials and difficulty in obtaining high-paraffin content feedstocks, making it challenging to supply high-quality lube base oils in large quantities.
Innovation Solution
An unsupported metallic catalyst comprising nickel, molybdenum, and tungsten, activated by hydrogen, is used in a selective ring-opening (SRO) reaction to convert naphthene or aromatic compounds into branched paraffins, thereby increasing the viscosity index of lube base oils, allowing for the use of a wider range of feedstocks and improving production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If synthetic base oil production method is used, then viscosity index is improved, but raw material cost increases
Solution Approach 1:
The patent changes the chemical parameters of the feedstock by using hydrocracking to convert heavy gas oils with high sulfur content into lighter fractions with improved viscosity index, avoiding the need for expensive synthetic base oils while achieving comparable performance through controlled chemical transformation
Solution Approach 2:
The patent converts the harmful high-sulfur heavy gas oils, which are typically discarded or require expensive desulfurization, into valuable lube base oil components through hydrocracking, transforming a waste stream into a profitable product while improving viscosity index
2Manufacturing precision
If structural isomerization process is used, then viscosity index is improved, but feedstock availability decreases
Solution Approach 1:
The patent creates a universal processing method that can handle multiple types of heavy gas oils with varying sulfur contents through hydrocracking, making the process adaptable to different feedstock sources and broader in scope than structural isomerization which requires specific high-paraffin feeds
3Productivity
If existing lube base oil production methods are used, then production cost is reduced, but equipment investment increases
Solution Approach 1:
The patent merges the lube base oil production process with existing hydrocracking units that already have desulfurization capability, combining two functions into one integrated system that produces both脱硫ized fuel and high-quality lube base oil, thereby reducing equipment investment while maintaining productivity
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
The catalyst enables the production of lube base oils with a higher viscosity index than existing methods, facilitating the use of diverse feedstocks and enhancing production efficiency, while avoiding the need for additional sulfur removal processes and equipment investments.
Implementation Method 1
An unsupported metallic catalyst for a selective ring-opening (SRO) reaction may comprise nickel, molybdenum, and tungsten. The catalyst may be in an activated state by having been in contact with hydrogen.
Data Source
AI summary
Proposed are an unsupported metallic catalyst for a selective ring-opening (SRO) reaction and a method of using the same catalyst, wherein the catalyst contains nickel (Ni), molybdenum (Mo), and tungsten (W).