Hydrocarbon-Coated Iron Catalyst for Slurry Flowability
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Solution Overview
Problem
Catalysts used in hydroconversion processes, such as iron sulfate, tend to be hydrophilic, leading to clumping issues that hinder their dispersion in hydrocarbon feeds, which affects the flowability and handling of the catalyst in hydrocarbon conversion systems.
Innovation Solution
The development of a slurry catalyst system where iron-based catalyst particles are ground and coated with hydrocarbons having a melting point temperature of no more than 250°C, enhancing their hydrophobicity and preventing clumping, thereby improving flowability and ease of handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If iron-based catalyst particles are used for hydroconversion, then cost-effectiveness is improved, but hydrophilic properties cause clumping and poor flowability
Solution Approach 1:
The catalyst particles are coated with hydrocarbons having specific melting point properties (no more than about 250°C) to change their surface characteristics. This coating transforms the hydrophilic iron-based catalyst into a hydrophobic material that resists clumping and improves flowability while maintaining the cost-effective iron-based composition.
Solution Approach 2:
The invention creates a composite catalyst system combining iron-based catalytic material with a hydrocarbon coating layer. This composite structure integrates the low-cost iron catalyst core with a hydrophobic coating shell, achieving both economic viability and improved handling properties through the synergistic combination of materials.
2Ease of manufacture
If iron sulfate catalyst is used to meet economic costs, then cost-effectiveness is improved, but hydrophilic nature causes moisture absorption and clumping
Solution Approach 1:
By coating the iron sulfate particles with hydrocarbons of specific melting points, the surface hydrophilicity parameter is changed to hydrophobicity. This prevents moisture absorption and clumping while retaining the economically advantageous iron sulfate core material.
Solution Approach 2:
The hydrocarbon coating acts as an intermediary layer between the hydrophilic iron sulfate catalyst and the hydrocarbon feed environment. This intermediate coating prevents direct interaction between moisture and the catalyst surface, eliminating clumping issues while maintaining the low-cost iron sulfate composition.
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 coated catalysts are hydrophobic and resistant to clumping, allowing for easier handling and dispersion in hydrocarbon feeds, facilitating efficient hydroprocessing reactions while maintaining cost-effectiveness.
Implementation Method 1
The coating can have an effective amount of one or more hydrocarbons to provide the catalyst with improved flowability
Implementation Method 2
a coating including one or more hydrocarbons having a melting point temperature of no more than about 250° C.
Data Source
AI summary
One exemplary embodiment can be a process for making a catalyst including an effective amount of iron for catalyzing one or more reactions in a hydrocarbon conversion system. The process can include grinding and coating the particles. The ground particles can have an effective amount of iron, and substantially all the particles may have a maximum dimension no larger than about 130 microns. The coating can have an effective amount of one or more hydrocarbons to provide the catalyst with improved flowability.