H2 removal method and device for propylene gas stream of polypropylene device

• Main Authors: WANG FU, WEN RUNJUAN, ZHU CHUANQI, HU YONGXIN, MA FANG, DING WENYAO, YANG YONGRONG, LIAO ZUWEI, ZHAO NANA, JIANG YONGJUN
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses a method and a device for removing H2 from a propylene gas stream of a polypropylene device. The H2 removal method comprises the following steps: measuring the concentration of H2 in a propylene gas stream pipeline; whether H2 removal operation is started or not is judged, and when the volume concentration of H2 in the propylene gas stream pipeline is smaller than 3%, the propylene gas stream is not introduced into the H2 removal device; when the volume concentration of H2 in the propylene gas stream pipeline is larger than or equal to 6%, the propylene gas stream is fed into an H2 removal device to remove H2 in the propylene gas stream, and the H2-removed propylene gas stream is pressurized by a supercharger and returns to the propylene gas stream pipeline. According to the technical scheme provided by the invention, when the concentration of H2 in the propylene gas stream reaches a certain value, the propylene gas stream is fed into the H2 removal device for H2 removal and then is pr