Hydroprocessing Catalyst with Organic Additive Blend
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Solution Overview
Problem
There is a need for hydroprocessing catalysts with enhanced catalytic properties for effectively treating petroleum-derived hydrocarbon feedstocks with high concentrations of sulfur and nitrogen, as existing catalysts lack sufficient activity and stability.
Innovation Solution
A hydroprocessing catalyst composition is developed, comprising an inorganic oxide support particle impregnated with a metal impregnation solution containing a metal complexing agent and either cobalt or nickel, along with molybdenum, and further incorporating an organic additive blend of an acetate compound and an unsaturated fatty amine compound, which enhances hydrodesulfurization and hydrodenitrogenation activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hydroprocessing catalysts are used, then basic hydrodesulfurization and hydrodenitrogenation functions are provided, but catalytic activity and stability are insufficient for feedstocks with high sulfur and nitrogen concentrations
Solution Approach 1:
The catalyst employs a composite structure combining inorganic oxide support (alumina, silica, or silica-alumina) with organic additive compounds (fatty amines and carboxylic acids) that form metal chelate complexes. This composite approach creates synergistic effects where the inorganic support provides structural stability while the organic additives enhance catalytic activity through chelation with metal components (molybdenum, nickel, or cobalt), resolving the contradiction between stability and activity.
Solution Approach 2:
The invention modifies the chemical parameters of the catalyst by incorporating specific organic compounds with defined molecular structures (fatty amines with 8-22 carbon atoms and carboxylic acids with 2-10 carbon atoms). These parameter changes in composition and structure enable the formation of metal chelate complexes that simultaneously improve catalytic activity for hydrodesulfurization and hydrodenitrogenation while maintaining catalyst stability under harsh processing conditions.
2Productivity
If metal components are incorporated into the support to enhance activity, then hydrodesulfurization and hydrodenitrogenation capability improves, but metal dispersion and stability may be compromised
Solution Approach 1:
The organic additive compounds (fatty amines and carboxylic acids) serve as intermediaries between the metal components and the inorganic oxide support. These intermediaries form metal chelate complexes that anchor metal species (molybdenum, nickel, or cobalt) onto the support surface, improving metal dispersion and preventing aggregation. This intermediary mechanism allows high metal loading for enhanced activity while maintaining stable metal distribution.
3Ease of manufacture
If existing catalyst compositions are used, then manufacturing simplicity is maintained, but catalytic performance for high sulfur and nitrogen feedstocks is inadequate
Solution Approach 1:
The manufacturing process incorporates preliminary impregnation steps where organic additive compounds are introduced onto the metal-loaded support before final calcination and sulfidation. This preliminary action ensures uniform distribution of organic additives that will subsequently form metal chelate complexes, achieving enhanced catalytic performance without significantly complicating the overall manufacturing流程. The organic additives are pre-positioned to interact with metal components during standard processing steps.
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 exhibits improved hydrodesulfurization and hydrodenitrogenation activity, achieving exceptional catalytic performance by forming metal chelate complexes that enhance metal dispersion and stability, leading to effective treatment of hydrocarbon feedstocks with reduced sulfur and nitrogen content.
Implementation Method 1
incorporating an organic additive blend of an acetate compound and an unsaturated fatty amine compound, which enhances hydrodesulfurization and hydrodenitrogenation activity... forming metal chelate complexes that enhance metal dispersion and stability
Implementation Method 2
Hydroprocessing catalysts are used in processes to remove organic sulfur and nitrogen compounds from hydrocarbon feedstocks... the organic sulfur and nitrogen compounds are catalytically converted in the presence of hydrogen respectively to hydrogen sulfide and ammonia
Implementation Method 3
the organic sulfur and nitrogen compounds are catalytically converted in the presence of hydrogen respectively to hydrogen sulfide and ammonia
Data Source
AI summary
A highly active hydroprocessing catalyst that comprises an inorganic oxide support particle having been impregnated with a metals-impregnation solution comprising a complexing agent and a hydrogenation metal that is further incorporated with an organic additive blend.