FIELD: chemical industry.
SUBSTANCE: method of producing liquid sulphurous anhydride and sulfuric acid involves burning sulfur in an oxygen atmosphere, oxidising the obtained sulfur dioxide to sulfur trioxide, absorption of sulfur trioxide with sulfuric acid, recycling of exhaust gases from the absorption stage to the sulfur dioxide oxidation stage and stripping part of the recycled gas. Also disclosed is an apparatus for implementing this method.
EFFECT: group of inventions makes it possible to increase efficiency of simultaneous production of sulfuric acid and liquid sulfur dioxide, providing a high degree of conversion of the initial raw material and high efficiency while reducing material and energy costs.
22 cl, 1 dwg, 2 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF REMOVING SULFUR AND NITROGEN OXIDES FROM GASES | 1996 |
|
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|
RU2570658C2 |
| METHOD OF PRODUCING SULFURIC ACID | 0 |
|
SU1437349A1 |
| METHOD OF SYNTHESIS OF SULFURIC ACID BY NITROSOUS METHOD | 1993 |
|
RU2042610C1 |
