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Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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B01D
SEPARATION
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3/00
Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
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B01D3/14
Fractional distillation; or use of a fractionation or rectification column
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B01D3/16
Fractionating columns in which vapour bubbles through liquid
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B01D3/24
with sloping plates or elements mounted stepwise
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