FIELD: chemistry.
SUBSTANCE: invention relates to chemistry. A portion of said sulphur dioxide, contained in metallurgical furnace gas, is reduced to elementary sulphur and the other portion is converted to sulphuric acid or sulphate. A portion of the obtained elementary sulphur is removed from the gas. A portion of the obtained elementary sulphur remaining in the gas is oxidised to obtain an additional portion of sulphur dioxide, which is converted to sulphuric acid or sulphate. The elementary sulphur and sulphuric acid or sulphate are separated. Reduction of sulphur dioxide to elementary sulphur is carried out in gas phase by adding a reducing carbonaceous material such as hydrocarbons.
EFFECT: invention enables to process exhaust gases containing sulphur dioxide to sulphur and sulphuric acid or sulphate.
21 cl, 4 dwg, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING ELEMENTARY SULFUR FROM GASES | 0 |
|
SU1586509A3 |
| METHOD OF GASES TREATMENT AND DEVICE FOR ITS EMBODIMENT | 1996 |
|
RU2164167C2 |
| GAS DESULFURIZATION PROCESS | 2000 |
|
RU2241527C2 |
| METHOD OF PREPARING LIQUID COMPOSITION OF SULFUR DYES | 1988 |
|
RU2042689C1 |
| METHOD FOR RECOVERING SULPHUR COMPOUNDS FROM WATER (ALTERNATIVES) AND METHOD FOR CLEANING SULPHUR-LADEN FLUE GASES | 1993 |
|
RU2108982C1 |
| METHOD OF REMOVING SULFUR COMPOUNDS FROM EFFLUENT gases | 1991 |
|
RU2089267C1 |
| METHOD FOR PROCESSING OF ALKALI SULFATE-THIOSULFATE SOLUTIONS | 1992 |
|
RU2042623C1 |
| METHOD FOR TREATMENT OF RESIDUAL LIQUID OF FIXING BATHS IN PHOTOGRAPHIC AND PHOTOCHEMICAL INDUSTRIES | 1990 |
|
RU2018487C1 |
| INTEGRATED METHOD FOR PRODUCING SULPHUR DIOXIDE SUITABLE IN QUALITY FOR USE IN THE PROCESS OF SULPHURIC ACID PRODUCTION FROM CALCIUM SULPHATE/PHOSPHOGYPSUM PRODUCED IN THE PROCESS OF PHOSPHORIC ACID PRODUCTION | 2021 |
|
RU2800415C1 |
| METHOD FOR CLEANING OF OXYGEN-CONTAINING GASES FROM SULFUR DIOXIDE | 1988 |
|
SU1823379A1 |
