The invention discloses an
ethylene glycol rectification device
system in industry of producing
ethylene glycol by synthesis gas. The
ethylene glycol rectification device
system comprises a primary dealcoholization
tower, a secondary dealcoholization
tower, an
ethylene glycol refining
tower, wherein the primary dealcoholization tower is connected with a
hydrogenation reaction product tank by a pipeline, the secondary dealcoholization tower is connected with the primary dealcoholization tower by a pipeline, the
ethylene glycol refining tower is connected with the secondary dealcoholization tower, an
ethanol removal tower and a butylenes glycol removal tower which are connected by a pipeline are arranged on the pipeline between the secondary dealcoholization tower and the
ethylene glycol refining tower, the top of the
ethanol removal tower is connected with an
ethanol tank, and the top of the butylenes glycol removal tower is connected with the butylenes glycol tank. The invention further discloses a rectification technique in industry of producing ethylene glycol by synthesis gas. According to the ethylene glycol rectification device
system in industry of producing ethylene glycol by synthesis gas, the steam consumption can be reduced, the
energy consumption can be saved, the purity of the
methanol can be improved, the output of premium grade products can be increased, the production cost can be greatly lowered, and the enterprise benefits can be increased.