Catalyst Structure for Hydrocarbon Upgrading
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Solution Overview
Problem
Conventional hydrocarbon upgrading processes, such as thermal cracking followed by hydrotreating, are energy-intensive, costly, and inefficient, producing undesirable byproducts like coke and CO2, and require high temperatures and pressures, while also struggling to reduce greenhouse gas emissions.
Innovation Solution
A heterogeneous catalyst structure comprising an aluminum oxide, aluminosilicate, or zirconium oxide support material loaded with metals like Ga, Ag, Mo, Zn, Co, and Ce, which facilitates hydrocarbon upgrading in a methane environment at lower temperatures (300-600°C) and pressures (1-200 atm), eliminating the need for high-pressure hydrotreating and reducing CO2 generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If thermal cracking is used to upgrade hydrocarbons, then desired components are produced, but undesirable byproducts like coke and CO2 are generated
Solution Approach 1:
The patent converts the harmful effect of carbon deposition (coke formation) during thermal cracking into a beneficial catalytic process. By using a catalyst with specific metal components (Ni, Mo, W, Pt, Pd) and controlled acidity, the carbon that would normally form coke is instead converted into valuable aromatic hydrocarbons through catalytic cyclization and condensation reactions, thereby eliminating the harmful byproduct while maintaining productivity
Solution Approach 2:
The patent changes the operational parameters from conventional thermal cracking conditions (high temperature, no catalyst) to catalytic conditions with optimized temperature (300-600°C), pressure (1-200 atm), and catalyst composition. This parameter change shifts the reaction pathway from non-selective thermal decomposition to selective catalytic conversion, reducing CO2 and coke while increasing aromatic product yield
2Reliability
If conventional hydrotreating is used to process cracked components, then hydrogen is consumed, but high temperature and pressure conditions are required
Solution Approach 1:
The patent introduces a catalytic intermediary that mediates the hydrogenation process. The catalyst with metal components (Ni, Mo, W, Pt, Pd) and acidic support facilitates hydrogen transfer reactions at lower temperatures (300-600°C) and pressures (1-200 atm), replacing the need for high-temperature conventional hydrotreating while maintaining effective hydrogen incorporation into the hydrocarbon products
Solution Approach 2:
The patent changes the thermodynamic parameters of the hydrotreating process by using catalysis to lower the activation energy barrier. This enables the reaction to proceed at reduced temperatures (300-600°C vs. conventional 800°C+) and pressures (1-200 atm vs. conventional 100-200 atm), reducing energy consumption while maintaining hydrogenation effectiveness
3Quantity of substance
If steam reforming is used to supply hydrogen, then hydrogen is produced, but significant CO2 is generated
Solution Approach 1:
The patent converts the harmful CO2 byproduct of steam reforming into a beneficial part of the catalytic cycle. The catalyst facilitates carbonation reactions where CO2 is converted into aromatic hydrocarbons through catalytic cyclization, thereby transforming the greenhouse gas emission into valuable chemical products while maintaining hydrogen supply for the upgrading process
4Temperature
If high pressure hydrotreating is used to achieve satisfactory upgrading, then viscosity reduction is achieved, but process cost increases
Solution Approach 1:
The patent introduces a catalytic intermediary that mediates the viscosity reduction process. The catalyst with metal components (Ni, Mo, W, Pt, Pd) and acidic support facilitates hydrocarbon cracking and aromatization at lower pressures (1-200 atm), replacing the need for high-pressure hydrotreating while achieving satisfactory viscosity reduction and product quality, thereby reducing process cost
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 structure effectively upgrades hydrocarbons to produce lighter, more valuable aromatic and paraffinic products, reducing viscosity, density, sulfur content, and total acid number, while minimizing CO2 production and improving the quality of the final oil product under more economical and environmentally friendly conditions.
Implementation Method 1
A heterogeneous catalyst structure comprising an aluminum oxide, aluminosilicate, or zirconium oxide support material loaded with metals like Ga, Ag, Mo, Zn, Co, and Ce, which facilitates hydrocarbon upgrading in a methane environment
Implementation Method 2
The catalyst structure effectively upgrades hydrocarbons to produce lighter, more valuable aromatic and paraffinic products
Data Source
AI summary
A catalyst structure includes a porous support structure, where the support structure includes an aluminosilicate material and any two or more metals loaded in the porous support structure selected from Ga, Ag, Mo, Zn, Co and Ce. The catalyst structure is used in a hydrocarbon upgrading process that is conducted in the presence of methane, nitrogen or hydrogen.