Device for recovering ethanol from light-concentration waste gas generated in vitamin K3 production

• Main Authors: TANG ZAIYANG, SHI AILIANG
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2012
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model relates to a device for recovering ethanol from light-concentration waste gas generated in vitamin K3 production. The device is composed of a drying part, a waste gas circulation part, a waste gas condensation part and a waste gas absorption part which are communicated through pipelines, wherein the waste gas condensation part is formed in the way that the outlet of a draught fan is communicated to an air filtration heat exchanger through an inlet pipeline of the draught fan; the waste gas condensation part is composed of a waste-gas-into-condenser pipeline, a low-temperature cooling water inlet pipe and a low-temperature cooling water outlet pipe, wherein the waste-gas-into-condenser pipeline arranged on the outlet pipeline of the draught fan is communicated to a condenser, and the low-temperature cooling water inlet pipe and the low-temperature cooling water outlet pipe are arranged on the condenser; and the waste gas absorption part is composed of an active carbon fiber filter I, an activ