A high-flux, anti-wear type 3D printing integrated desulfurization and denitration catalyst, a preparation method and application thereof

By designing high-throughput channels and wear-resistant structures using 3D printing technology, and combining Fe, La, Zr oxides with Ca(OH)2, a highly efficient wear-resistant catalyst was prepared, which solved the structural and performance bottlenecks of traditional Fe-based catalysts and achieved efficient flue gas purification.

CN122399819APending Publication Date: 2026-07-17NINGXIA UNIVERSITY
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Patent Information

Application Number
CN202610490841.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing Fe-based desulfurization and denitrification catalysts suffer from problems such as rigid structure, poor wear resistance, uneven dispersion of active components, weak water resistance, and low synergistic removal efficiency, making them difficult to adapt to high-velocity industrial flue gas conditions.

Method used

High-throughput channels were designed using 3D printing technology. Combined with the synergistic effect of Fe, La, Zr oxides and Ca(OH)2, wear-resistant catalysts were prepared by extrusion 3D printer, achieving uniform dispersion of catalytic active sites and efficient mass transfer.

Benefits of technology

It achieves high-throughput, low-resistance flue gas transmission, improves catalyst lifespan and desulfurization and denitrification efficiency, reduces operating costs, adapts to high-sulfur and high-nitrogen operating conditions in multiple scenarios, and avoids wastewater generation.

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Abstract

本发明提供了一种高通量、抗磨损型3D打印一体成型脱硫脱硝催化剂的制备方法,包括以下步骤:(1)向Fe2O3中加入La源、Zr源助剂组分,混合至均匀,得到改性Fe2O3;所述La、Zr助剂组分与Fe2O3的摩尔比为(0.2~0.6):(99.4~99.8),且La和Zr的摩尔比为(1~5):(1~5);(2)将改性Fe2O3置于焙烧设备中,在一定的温度下焙烧处理一定的时间,自然冷却至室温,得到粉末A;(3)将粉末A或Ca(OH)2或粉末A和Ca(OH)2混合粉末、粘结剂、水充分混合,配置成活性浆料;(4)使用挤出式3D打印机进行打印;(5)将得到的打印催化剂进行烘干和焙烧处理,即得到一体成型脱硫脱硝催化剂。本发明通过3D打印一体成型技术,实现“活性金属分散性调控—高通量孔道定制—抗磨损结构强化”的协同。
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