FIELD: process engineering.
SUBSTANCE: invention relates to cleaning of contaminated gas main flow of aluminium production plant. Gas cleaner comprises multiple gas cleaning chambers (34a-c), inlet line (32) to separate contaminated gas main flow therein to multiple separate flows of said gas fed in cleaning chambers inlets (46a-c) and multiple heat exchangers 40a-c. Said heat exchanger (40a-c) is located downstream of inlet line (32) for cooling of appropriate fractional flow of contaminated gas into appropriate cleaning chamber (34a-c). Heat exchangers 40 a-c can generate pressure difference in contaminated gas fractional flow therein to level the relative rates of separate fractional flows.
EFFECT: higher efficiency and reliability.
16 cl, 5 dwg
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