12-Membered Ring Zeolite Catalyst for Renewable C3 Hydrocarbon Production
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Solution Overview
Problem
There is a need for novel methods to produce renewable C3 hydrocarbons and renewable aromatic hydrocarbons, as existing methods are insufficient to meet the growing demand for sustainable alternatives in the petrochemical industry.
Innovation Solution
A method involving the hydrodeoxygenation of a renewable feedstock followed by catalytic cracking using a catalyst comprising a 12-membered ring zeolite with a pore size below 0.7 nm, which produces both renewable C3 hydrocarbons and renewable aromatic hydrocarbons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional catalytic cracking methods are used, then production capacity is sufficient, but selectivity towards C3 hydrocarbons and aromatic hydrocarbons is limited
Solution Approach 1:
The patent applies local quality by using a specific 12-membered ring zeolite catalyst with controlled pore size (0.5-0.7 nm) that selectively promotes C3 hydrocarbon and aromatic hydrocarbon formation. The catalyst's specific structural properties create localized chemical activity that enhances selectivity towards desired products while maintaining overall production capacity.
Solution Approach 2:
The patent changes critical parameters including operating temperature (300-700°C), pressure (1-40 bar), and catalyst composition (12-membered ring zeolite with specific pore size) to optimize both selectivity and productivity. These parameter adjustments enable the process to achieve high selectivity for C3 hydrocarbons and aromatic hydrocarbons while maintaining sufficient production capacity.
2Speed
If higher temperatures are used in catalytic cracking, then reaction rate increases, but carbon oxide emissions increase
Solution Approach 1:
The patent optimizes the temperature parameter to a specific range (300-700°C) that balances reaction rate with carbon oxide emissions. This parameter optimization, combined with the use of a 12-membered ring zeolite catalyst, enables the process to achieve acceptable reaction rates while minimizing harmful carbon oxide emissions compared to traditional high-temperature cracking methods.
3Manufacturing precision
If conventional zeolite catalysts are used, then catalytic activity is sufficient, but selectivity towards renewable C3 hydrocarbons and aromatic hydrocarbons is limited
Solution Approach 1:
The patent employs a 12-membered ring zeolite catalyst with specifically controlled pore size (0.5-0.7 nm) that creates localized chemical environments favorable for C3 hydrocarbon and aromatic hydrocarbon formation. This structured approach to catalyst design enhances selectivity without requiring overly complex multi-component catalyst systems.
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 high selectivity towards renewable C3 hydrocarbons and aromatic hydrocarbons, operating effectively at lower temperatures compared to traditional processes, thus enhancing yield and reducing carbon oxide emissions.
Implementation Method 1
subjecting the pre-treated feedstock to hydrodeoxygenation reaction to produce a hydrodeoxygenated stream
Implementation Method 2
subjecting the hydrodeoxygenated stream to catalytic cracking reaction to produce a catalytically cracked stream
Data Source
AI summary
The present invention relates to a method for producing renewable C3 hydrocarbons D and renewable aromatic hydrocarbons E from a renewable feedstock A, in particular to methods comprising hydrodeoxygenation (20) and catalytic cracking (40) steps wherein the catalytic cracking is catalysed by a catalyst comprising a zeolite and a support, wherein the zeolite is a 12-membered ring zeolite with a pore size below 0.7 nm.