A preparation method of a supported ferric oxide-sepiolite catalyst for CO2 amine solution desorption
By preparing a supported Fe2O3-SEP catalyst, the porous structure and acid-base centers of sepiolite are used to support Fe2O3, which promotes CO2 desorption. This solves the problem of high energy consumption in the regeneration of amine-rich solutions, and achieves an increase in desorption rate and a reduction in energy consumption.
CN114931951BActive Publication Date: 2026-08-25XIANGTAN UNIV
2 Cites 0 Cited by
Patent Information
- Application Number
- CN202210651589.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-06-09
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2042-06-09
AI Technical Summary
Technical Problem
Existing CO2 capture technologies suffer from high energy consumption during the regeneration of amine-rich solutions, as well as the problems of easy degradation of organic amine solvents and easy corrosion of equipment.
Method used
A supported Fe2O3-SEP catalyst was prepared by impregnation. By utilizing the porous structure and acid-base centers of sepiolite, Fe2O3 was loaded to promote the CO2 desorption process and reduce the desorption temperature and energy consumption.
Benefits of technology
It significantly reduces CO2 desorption energy consumption, improves desorption rate, has stable catalyst performance, good circulation effect, and solves the problem of high energy consumption for rich amine solution regeneration.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a preparation method of a ferroferric oxide-sepiolite (Fe2O3-SEP) catalyst for CO2 amine solution desorption, wherein the catalyst is obtained by loading metal oxides on sepiolite through an impregnation method. The method comprises the following steps: firstly, magnetically stirring and impregnating a metal nitrate solution and sepiolite in a water bath, then performing suction filtration, drying, grinding and calcination to obtain the supported Fe2O3-SEP catalyst. The obtained catalyst is used for desorption of saturated amine-rich solution, the amine-lean solution after desorption is cooled, the CO2 loading amount of the amine-lean solution is titrated, CO2 is introduced again for absorption, and the amine-lean solution is recycled for 4-5 times. Compared with existing catalysts, the catalyst has the advantages of wide raw material distribution, low price, simple preparation process, no other by-products, stable catalytic performance and no influence on CO2 absorption performance of the amine solution.
Need to check novelty before this filing date? Find Prior Art