Winter anti-blocking device for methanol-containing dimethyl carbonate purification process pipeline

• Main Authors: YE ZHAN, QIAO YUSHAN, WANG SHUO, LIU DONGKAI, TANG HONGJIAN, WEI DONG, DONG JIZENG, SONG XIAOLING, JU WENZHANG, HUANG ZONGQIU, YANG JUN, WU HAO
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2021
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; BLASTING; CHEMISTRY; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; ORGANIC CHEMISTRY; PIPE-LINE SYSTEMS; PIPE-LINES; STORING OF DISTRIBUTING GASES OR LIQUIDS; WEAPONS

The utility model belongs to the technical field of dimethyl carbonate rectification, and particularly relates to a winter anti-blocking device for a methanol-containing dimethyl carbonate purification process pipeline, which comprises a dehydrogenation tower, a purification tower, a dimethyl carbonate product tank and a crude dimethyl carbonate tank, a discharging port of a tower kettle of the purifying tower is connected to a dimethyl carbonate product tank through a dimethyl carbonate product conveying pump and a stop valve a, a pipeline a is arranged on a pipeline for connecting the dimethyl carbonate product conveying pump and the stop valve a, and unqualified dimethyl carbonate flows back to a crude dimethyl carbonate tank through the pipeline a. The pipeline a is easy to block due to dimethyl carbonate crystallization in winter, and normal operation of the system is affected, the methanol pipeline is arranged on the pipeline a, and dimethyl carbonate in the pipeline a is replaced by methanol, so that t