发明名称 |
Process for the production of chlorine dioxide. |
摘要 |
<p>A process for the production of chlorine dioxide by reacting in a reaction vessel an alkali metal chlorate, mineral acid and a reducing agent in such proportions that chlorine dioxide is produced in a reaction medium which is maintained at a temperature of from about 50 DEG C to about 100 DEG C and at an acidity within a range of from about 2 to about 5 N. The reaction medium is subjected to subatmospheric pressure sufficient for evaporating water, a mixture of chlorine dioxide, oxygen and water vapour being withdrawn from an evaporation zone in the reaction vessel, and alkali metal sulfate being precipitated in a crystallization zone in the reaction vessel. As the reducing agent hydrogen peroxide is used.</p> |
申请公布号 |
EP0473559(A1) |
申请公布日期 |
1992.03.04 |
申请号 |
EP19910850202 |
申请日期 |
1991.08.20 |
申请人 |
EKA NOBEL AB |
发明人 |
ENGSTROEM, JOERGEN;NORELL, MARIA |
分类号 |
C01B11/02;C01D5/02;D21C9/14;D21C9/147 |
主分类号 |
C01B11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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