Sulfided Hydrogenation Catalyst With Localized Active-Phase Modification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hydrogenation catalysts face issues with hydrogenation capability, feedstock oil adaptability, and stability, particularly when processing unconventional and inferior feedstocks, due to inadequate modification of the active phase and migration of active metals during heavy oil processing.
Innovation Solution
A sulfided-state hydrogenation catalyst is developed with a high content of modification aid components in the A-B-S active phase region, achieved through sulfurization and desulfurization treatments, ensuring efficient contact and combination with the active phase, enhancing hydrogenation capability and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If carrier modification is used to introduce modification aids, then the catalyst structure can be regulated, but the active phase cannot be effectively modified and active metals migrate during heavy oil processing
Solution Approach 1:
The patent applies local quality by introducing modification aids (Ga, Zn, Mg) specifically during the active phase formation stage rather than modifying the carrier. This ensures the modification aids are localized within the active phase regions, achieving targeted modification of the active phase while preventing active metal migration, thereby resolving the contradiction between structure regulation and metal stability.
2Manufacturing precision
If modification aids are introduced during active metal impregnation, then the active phase can be modified, but zinc and nickel cannot be simultaneously vulcanized resulting in insufficient desulfurization activity
Solution Approach 1:
The patent applies preliminary action by introducing modification aids during the active phase formation stage before sulfurization. This timing allows the modification aids to be incorporated into the active phase structure prior to vulcanization, enabling simultaneous vulcanization of zinc and nickel while maintaining high desulfurization activity, thus resolving the contradiction between active phase modification and desulfurization productivity.
3Productivity
If the catalyst is designed for high hydrogenation capability, then it can process unconventional feedstocks, but stability and adaptability to various feedstock oils deteriorate
Solution Approach 1:
The patent applies composite materials by creating a multi-component active phase system containing Co/Ni, Mo/W, and modification aids (Ga, Zn, Mg). This composite structure combines the hydrogenation capability of the base metals with the stabilizing and adaptability-enhancing properties of the modification aids, allowing the catalyst to maintain high hydrogenation activity while being stable and adaptable to various feedstock oils including unconventional ones.
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 desirable hydrogenation capability and stability, with selective advantages for various petroleum products, including improved hydroprocessing of heavy oils and specific treatments such as hydrodesulfurization, hydrodenitrogenation, and hydrodecarbonization.
Implementation Method 1
the modification aid component can favorably perform functions, effectively combining with the A-B-S active phase
Implementation Method 2
performing sulfurization on an oxidation state hydrogenation catalyst to obtain a sulfided-state hydrogenation catalyst
Implementation Method 3
carrying out a desulfurization treatment on the sulfided-state hydrogenation catalyst
Data Source
AI summary
A hydrogenation catalyst and a preparation method therefor and a use thereof are provided. The hydrogenation catalyst is a sulfided-state hydrogenation catalyst and includes a carrier, an active component A, an active component B, and a modification aid component. The active component A is selected from at least one of metal elements of group VIII, the active component B is selected from at least one of metal elements of group VIB, and the modification aid component is selected from at least one of elements of groups IB, IIA, IIB, IIIA, and VIA. The hydrogenation catalyst is characterized by a TEM-EDS method, and the content of the modification aid component distributed in an A-B-S active phase region accounts for 60% to 98% of the total content of the modification aid component.