Recovering and refining process and equipment of calcium carbide method based VCM (vinyl chloride monomer) high-boiling residues

• Main Authors: ZHANG JILIANG, ZHAO YUEJIAN, MIAO NAIFEN, FU BINGWEI
• Format: Patent
• Language: Chinese; English
• Published: 10.10.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention provides a recovering and refining process and equipment of calcium carbide method based VCM (vinyl chloride monomer) high-boiling residues. Theprocess comprises the following steps: pretreatment of raw materials, feeding, control of a light component tower, recovery from the top of the light component tower, recovery from the bottom of the light component tower, control of a heavy component tower, recovery from the top of the heavy component tower, siding withdrawing of dichloroethane, recovery from the bottom of the heavy component tower, feeding of a high-boiling tower, operation of the high-boiling tower, recovery of fine VCM and recovery of tower bottom high-boiling residues. The recoveringand refining equipment comprises a raw material drying unit, a raw material coarse separation unit, a heavy component separation unit, a rectification unit and a heat transfer oil unit; the raw material drying unit is connected with the raw material coarse separation unit, the raw material coarse separati