To perform a gas-liquid contact reaction simply, inexpensively and highly efficiently.
In a gas-liquid contact reactor blowing reactive raw material gas into a reactive raw material liquid 23 to perform chemical reaction, a gas return member 36 having a rising passage 48 collecting a gas product to allow the same to pass and a falling passage 50 communicating with the rising passage to allow the gas product to flow into the reactive raw material liquid formed thereto is provided in a reaction column 32 storing the reactive raw material liquid. By this constitution, heat energy necessary for a gas-liquid contact reaction can be conserved and the production efficiency of the gas product is enhanced and an output can be increased and the purifying degree of the gas product can be enhanced.
SUZUKI YASUO
KATAGIRI TSUTOMU
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