Catalyst for preparing chlorine gas by hydrogen chloride oxidation, and preparation method and application thereof

US11000837B2 · kind B2 · utility

Assignee

• WANHUA CHEMICAL GROUP CO., LTD.

Inventors

• Hongke Zhang · Nanhu, CN
• Bo Zhou · Chengdu, CN
• Zhangwei Zai · Yantai, CN
• Dan Xu · Vernon Hills, US
• Yu Yao · Yantai, CN
• Yanlong Xu · Beijing, CN
• Dongke Zhao · Yantai, CN
• Jingjing Yang · Berkeley, US
• Jiansheng Ding · Yantai, CN
• Weiqi Hua · Yantai, CN

Key dates

• Filing date: Aug 5, 2016
• Grant date: May 11, 2021
• Expiry date: Nov 18, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2523/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A catalyst for preparing chlorine gas by hydrogen chloride oxidation, comprising the following components calculated according to mass content based on the total weight of the catalyst: 0.5-20 wt % copper; 2-10 wt % manganese; 0.05-2 wt % boron; 0.01-3 wt % chromium; 0.1-10 wt % rare earth metal; 0.1-10 wt % potassium; and 3-15 wt % titanium; also comprising 0.02-1.1 wt % phosphorus; and 0.03-1.9 wt % iron; the carrier content is 55-90 wt %. In the case of a fluidized bed reactor, the present catalyst can achieve a one-way hydrogen chloride conversion rate of 80-85%. Almost all of the 0-1000 mg/kg of chlorinated benzene contained in hydrogen chloride gas can be converted into CO2 and H2O without generating polychlorinated benzene.