Method of flue gas denitrification

US11213788B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC CORP. · CN

Inventors

• Xin Li · Beijing, CN
• Shuhe Liu · Fushun, CN
• Tianzhu Han · Fushun, CN
• Mingxing Wang · Beijing, CN

Key dates

• Filing date: Aug 31, 2017
• Grant date: Jan 4, 2022
• Expiry date: Jan 11, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2258/0283
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for flue gas denotation includes the step of, in the presence of ammonia, enabling flue gas in a denitration reactor to pass through a plurality of catalyst beds from the bottom to the top to participate in a denitration reaction. Each catalyst bed contains a catalyst support component and a granular denitration catalyst stacked on the catalyst support component, and, in every single catalyst bed, the granular denitration catalyst moves along a same direction on the catalyst support component. Between every two adjacent catalyst beds, the granular denitration catalyst falls from the tail of a previous catalyst support component to the head of a next catalyst support component, making the granular denitration catalyst travel along the catalyst support components reciprocatively.