Method for the purification of sulphuric acid containing mercury

Details Method for the purification of sulphuric acid containing mercury Method for the purification of sulphuric acid containing mercury

1974-05-13

1976-01-13

Adee, John

Gas separation

Means within gas stream for conducting concentrate to collector

55 73, B01D 5314

Patent

active

039321495

ABSTRACT:
The invention relates to a method of purifying sulphuric acid containing mercury in a plant for the production of sulphuric acid according to the contact process which involves drying moist roaster gases containing sulphur dioxide in at least two drying towers where the major part of the water content is absorbed in the first drying tower. The sulphuric acid containing mercury is in a quantity suitably measured to maintain the concentration between 70 and 80 percent by weight led to the first drying tower. To the second drying tower is led a sulphuric acid so that the concentration can be maintained between 95 and 103 percent by weight. The mercury is separated from a partial current from the circulating sulphuric acid in the first drying tower.

REFERENCES:
patent: 3577706 (1971-05-01), Moller
patent: 3780499 (1973-12-01), Dorr et al.
patent: 3788043 (1974-01-01), Dorr et al.

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