Sulfur trioxide preparation
Патенты
Язык: |
Французский |
Тип: |
Заявка на патент |
Номер (11) |
FR 2514742 A1 |
Номер заявки (21): |
8119470 |
Дата подачи заявки (22): |
16 окт. 1981 г. |
Дата начала отсчета срока действия патента (24): |
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Дата публикации патента (44,45,46): |
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Дата публикации заявки (43): |
22 апр. 1983 г. |
Авторы |
Matros J.S.
,
Boreskov G.K.
,
Lakhmostov V.S.
,
Volkov V.J.
,
Ivanov A. A.
|
Организации |
1 |
Институт катализа им. Г.К. Борескова СО РАН
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An SO2-contg. stream is oxidised to SO3 in a fixed catalyst bed by either reversing the direction of flow of the gas stream through the bed every 10-200 mins., or by changing the temp. of the stream supplied to the catalyst bed from 20-200 deg.C up to 350-600 deg.C every 10-200 mins. The process is used esp. for conversion of SO2-contg. waste streams to H2SO4. Method is esp. useful for treating streams contg. variable amts. of SO2; in specific processes the SO2 concn. in the feed stream varies between 0.6 and 5vol.% or between 2 and 9vol.%.