Alkylated Naphthalene Blendstock Production via Solid Acid Catalyst
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Solution Overview
Problem
The production of alkylated naphthalene blendstocks, particularly AN12, requires a corrosive triflic acid catalyst, leading to high capital investment costs due to necessary equipment metallurgy and increased production expenses.
Innovation Solution
A process using an acid-form MWW-type catalyst, combined with naphthalene and a solvent, and then heated with linear alpha olefins to produce an AN blendstock with an isomer ratio of less than 45 wt % mono alkylated naphthalene and greater than 55 wt % multi-alkylated naphthalene, reducing the need for corrosive catalysts and specialized equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a homogeneous triflic acid catalyst is used to produce AN12 blendstock, then the desired product quality is achieved, but significant capital investment is required due to equipment metallurgy requirements
Solution Approach 1:
The patent changes the chemical parameters of the catalyst system by replacing homogeneous triflic acid with a heterogeneous solid acid catalyst (ion-exchanged zeolite). This parameter change maintains the catalytic function while eliminating the need for specialized corrosion-resistant equipment, thereby reducing capital investment while preserving product quality
Solution Approach 2:
The patent employs a solid acid catalyst that can be easily replaced and does not require expensive corrosion-resistant equipment. The catalyst itself is a inexpensive solid material that can be disposed of or regenerated, eliminating the need for costly metallurgy infrastructure
2Reliability
If a homogeneous triflic acid catalyst is used to produce AN12 blendstock, then the desired product quality is achieved, but production costs increase
Solution Approach 1:
The patent changes the physical state parameter of the catalyst from homogeneous (liquid acid) to heterogeneous (solid catalyst). This parameter change reduces production costs by eliminating the need for expensive corrosion-resistant equipment and simplifying plant infrastructure, while maintaining the catalytic activity required for product quality
Solution Approach 2:
The patent replaces the homogeneous liquid acid system with a heterogeneous solid catalyst system. This substitution eliminates the need for complex corrosion protection systems and specialized equipment, thereby reducing production costs while maintaining product quality through effective catalysis
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 process results in a cost-effective production of AN blendstocks with improved performance benefits, combining the stability of AN5 and AN12 blendstocks, while eliminating the need for triflic acid and specialized equipment metallurgy.
Implementation Method 1
mixing an acid-form MWW-type catalyst, naphthalene, and a solvent to provide a reaction mixture; increasing the temperature of the reaction mixture; and adding linear alpha olefins to the reaction mixture to produce the AN blendstock
Implementation Method 2
increasing the temperature of the reaction mixture
Data Source
AI summary
Alkylated naphthalene blendstock and processes for making the alkylated naphthalene blendstock are provided. The present processes comprise mixing an acid-form MWW-type catalyst, naphthalene, and a solvent to provide a reaction mixture and adding linear alpha olefins to the reaction mixture after heating. The resulting AN blendstock has an isomer ratio of less than 45 wt % mono alkylated naphthalene and greater than 55 wt % multi-alkylated naphthalene and can be combined with polyalphaolefin base stock to provide a synthetic lubricant formulation produced without triflic catalyst and with less process steps.