DEVICE AND METHOD FOR CLEANING exhaust gas from the electrolytic aluminum production

摘要

1. The gas cleaning unit for cleaning the exhaust gas from at least one cell (20) for the production of aluminum comprises at least one contact reactor (4, 6), wherein the exhaust gas is brought into contact with alumina, and a device (10) dedusting, wherein at least a portion of the alumina with adsorbed from the exhaust gas in the contact reactor (4, 6) separates the contaminants from the exhaust gas, wherein the gas treatment unit is characterized in that it further comprises a wet scrubber (12) where the flowing of y stroystva (10) dedusting the exhaust gas is brought into contact with an absorbing liquid comprising water to further remove pollutants from the exhaust gas, wherein the wet scrubber (12) is mounted on a vertically higher level device (10) pyleudaleniya.2. Gas purification installation according to Claim. 1, wherein the wet scrubber (12) fixed at vertically above and near the device (10) pyleudaleniya.3. Gas purification installation according to Claim. 1, in which near the device (10) dedusting located hopper (8) of alumina, the wet scrubber (12) is located above the hopper (8) of alumina and at least partially hides from sight the hopper (8) of alumina, when viewed from above the wet scrubber (12) .4. Gas purification installation according to Claim. 1, wherein the device (10) dedusting comprises disposed at its top a chamber (34) of pure gas, wherein the wet scrubber (12) fluidly connected with the chamber (34) of pure gas via the outlet (40) to the side wall (38) of the chamber (34) of pure gaza.5. Gas purification installation according to Claim. 1, wherein the device (10) comprises a dust filter located at its top a chamber (34) Chi