发明公开
EP0612686A2 A process for continuously producing chlorine dioxide
无效
Verfahren zur kontinuierlichen Herstellung von Chlordioxid。
- 专利标题： A process for continuously producing chlorine dioxide
- 专利标题（中）： Verfahren zur kontinuierlichen Herstellung von Chlordioxid。
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申请号： EP94200268.4申请日： 1994-02-02
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公开(公告)号： EP0612686A2公开(公告)日： 1994-08-31
- 发明人: Sokol, John C.
- 申请人： EKA NOBEL AB
- 申请人地址： S-445 80 Bohus SE
- 专利权人： EKA NOBEL AB
- 当前专利权人： EKA NOBEL AB
- 当前专利权人地址： S-445 80 Bohus SE
- 代理机构： Jönsson, Christer
- 优先权： US23561 19930226
- 主分类号： C01B11/02
- IPC分类号： C01B11/02
摘要：
The invention relates to a process for continuously producing chlorine dioxide by reacting an alkali metal chlorate, sulfuric acid or another chlorine free mineral acid and hydrogen peroxide as reducing agent to produce chlorine dioxide in an aqueous reaction medium. The chlorine dioxide is generated in at least one reaction step comprising at least one reaction vessel, by feeding alkali metal chlorate, acid, hydrogen peroxide and inert gas to said reaction vessel, in substantial absence of added chloride ions, maintaining the aqueous reaction medium in said reaction vessel at a pressure of from about 400 mm Hg to about 900 mm Hg and at a temperature of from about 35°C to about 100°C and at an acidity within a range from about 4 to about 14 N and the chlorate concentration of between about 0.05 moles/l to saturation, withdrawing chlorine dioxide, oxygen and inert gas and the depleted aqueous reaction medium from said reaction zone without substantial crystallization of alkali metal sulfate.
公开/授权文献
- EP0612686B1 A process for continuously producing chlorine dioxide 公开/授权日：1998-04-22
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