Desulfurization Catalyst Using Oxidation Agent
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Solution Overview
Problem
Current methods for desulfurization of petroleum and Carbon Black Feed Oil are inefficient and costly, particularly in achieving stringent sulfur content regulations, leading to environmental pollution and equipment corrosion, with existing processes often requiring high energy and resulting in lower fuel economy.
Innovation Solution
A method involving an oxidation agent and an oxidation catalyst with the formula M1-xM3xM2O3, where M1 is a rare-earth element, M2 is a transition metal, and M3 is Ca or Sr, impregnated with an acid like sulfuric acid, is used to contact the sulfur-containing composition, effectively reducing sulfur content at lower temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional desulfurization methods are used to reduce sulfur content to meet stringent regulations, then sulfur content is reduced, but energy consumption increases and fuel economy decreases
Solution Approach 1:
The patent employs hydrogen peroxide as a strong oxidizing agent to accelerate the oxidation of sulfur compounds in petroleum. This allows desulfurization to proceed under milder conditions with lower energy input compared to conventional thermal processes, while achieving the required sulfur reduction to meet environmental regulations.
Solution Approach 2:
The patent utilizes a composite catalyst system combining metal salts (such as manganese, cobalt, or copper) with solid supports or carriers. This composite structure enhances catalytic activity and selectivity for sulfur oxidation, improving desulfurization efficiency while reducing the energy required for the process and maintaining fuel economy.
2Quantity of substance
If heavy processing is applied to remove large amounts of sulfur to achieve ULSD standards, then sulfur content is reduced, but energy consumption increases
Solution Approach 1:
Hydrogen peroxide serves as an intense oxidizing agent that enables rapid oxidation of sulfur compounds at lower temperatures and pressures. This accelerated oxidation process reduces the heavy processing requirements and associated energy consumption while achieving ultra-low sulfur diesel standards.
Solution Approach 2:
The patent changes the chemical parameters of the desulfurization process by introducing hydrogen peroxide and metal salt catalysts, transforming the reaction conditions from high-energy thermal processes to lower-energy chemical oxidation processes. This parameter change enables effective sulfur removal with reduced processing energy.
3Quantity of substance
If conventional oxidation processes are used for desulfurization, then sulfur removal is achieved, but the process is costly and less efficient
Solution Approach 1:
The composite catalyst system combines inexpensive metal salts with reusable solid supports, creating a cost-effective catalytic material. This composite approach enhances the efficiency of sulfur removal while reducing catalyst cost and enabling easier regeneration or recovery, thereby lowering overall process costs.
Solution Approach 2:
Hydrogen peroxide is a relatively inexpensive and environmentally benign oxidizing agent compared to conventional strong oxidants. Its use accelerates the oxidation reaction, improving sulfur removal efficiency while keeping reagent costs low and simplifying the overall process economics.
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 method achieves a high efficiency in sulfur removal, with greater than 97% reduction in petroleum products and greater than 50% reduction in crude petroleum fractions, while being cost-effective and environmentally friendly.
Implementation Method 1
contacting the composition with an oxidation agent and an oxidation catalyst
Implementation Method 2
a method of reducing the amount of sulfur in a composition by contacting the composition with an oxidation agent and an oxidation catalyst
Data Source
AI summary
Disclosed herein are methods and compositions useful for reducing the amount of sulfur in a composition comprising sulfur. The methods and compositions comprises the use of an oxidation agent and a oxidation catalyst. The oxidation catalyst can have the formula M\. xM3 xM203.