Method for preparing a basic nitrogen removal agent for chemical waste oil from oil refineries and its applications.
A method combining coal hydrocracking residue and spent FCC catalyst, enhanced by heteropoly acids or metal salts, addresses the inefficiencies of existing nitrogen removal methods by providing a rapid and cost-effective solution for achieving low basic nitrogen content in chemical waste oil.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- GUANGDONG UNIV OF PETROCHEMICAL TECH
- Filing Date
- 2025-11-27
- Publication Date
- 2026-05-22
AI Technical Summary
Existing methods for removing basic nitrogen from chemical waste oil, such as hydrodenitrogenation and adsorption denitrogenation, face challenges including high energy consumption, catalyst poisoning, unstable denitrogenation effects, and slow adsorption rates, making it difficult to achieve the required basic nitrogen content of ≤10 μg/g.
A preparation method involving the combination of coal hydrocracking residue and spent FCC catalyst, followed by hydrothermal treatment and modification with heteropoly acids or metal salts, creates a removal agent with enhanced pore structure and surface activity, achieving rapid and efficient adsorption of basic nitrogen.
The method results in a removal agent with a rapid adsorption rate and high capacity, reducing basic nitrogen content to <10 mg/kg, significantly improving the efficiency and cost-effectiveness of waste oil purification.
Smart Images
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