Removal technology of cyclic solvent dipolymer in a C5 diolefin separation process by solvent method

• Main Authors: ZHU TAO, TAO YING, ZHAO PEIYU, SONG SHUNLI, HOU YANJIE, YANG SHUANG, WANG YANHONG, SHI FENGYU, WANG HONGLI, YU HAI, SUN DELI, ZHANG HUI, WANG JIAJIE, LIU XUEXIAN, SUN YINGMING, GONG CHUANZHI, YUAN WENBO
• Format: Patent
• Language: Chinese; English
• Published: 12.06.2013
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention relates to a separation technology of petroleum hydrocarbon materials, particularly to a removal technology of a cyclic solvent dipolymer in a C5 diolefin separation process by a solvent method. The technology is characterized in that: a static mixer and a solvent separation tank are disposed, the operation pressure is controlled at 300-600KPaA, and the operation temperature is at 40-60DEG C. Part of a raffinate C5 component and a cyclic solvent are mixed. By utilizing the difference of the dipolymer solubility in the raffinate C5 and the solvent, the dipolymer in the solvent can be transferred into the raffinate C5, and can be separated from a separation tank top, so that the equipment energy consumption and the difficulty of process control and operation are reduced, the control index of the dipolymer in the cyclic solvent is effectively guaranteed, and stable operation of the C5 separation process is ensured. Compared with traditional technologies of dipolymer removal by rectification, the te