The invention belongs to a
hydrogen-containing
tail gas recycling process of a
cyclohexanol production device. The
hydrogen-containing
tail gas recycling process comprises the following steps: conveying
hydrogen-containing
tail gas generated by the
cyclohexanol production device into a gas-liquid separator, and compressing the gas separated from the gas-liquid separator to be 0.8MPa by a compressor; then cooling the gas to 8 DEG C to 12 DEG C; finally, enabling the gas to enter a filtering separator to obtain waste liquid and crude hydrogen gas, and adsorbing the crude hydrogen gas by an adsorption
tower to obtain product hydrogen gas; collecting waste liquid obtained by the filtering separator to a
waste oil tank, and standing and separating out water; filtering an organic phase with a fine filter, and heating to 120 DEG C to 140 DEG C; then conveying the organic phase into a desulfurizing
tower, and then cooling and conveying the organic phase to the
cyclohexanol production device to be used as the
raw material. With the adoption of the hydrogen-containing tail gas recycling process of the cyclohexanol production device,
moisture and impurities in the tail gas exhausted by a
hydrogenation reaction system of the cyclohexanol production device can be effectively separated, and components including
benzene,
cyclohexene,
cyclohexane and the like in the tail gas are recycled very well; with the adoption of the process, the tail gas can be returned back to a
dehydration tower of the cyclohexanol production device to be recycled.