公开(公告)号：US20180215686A1

公开(公告)日：2018-08-02

申请号：US15763743

申请日：2016-11-01

Applicant: SABIC Global Technologies B.V.

Inventor： Kuldeep WADHWA ,  Antonio MATARREDONA ,  Radu IGNAT ,  Sekhar MAMILLA ,  Christoph ROOSEN ,  Alex LONDONO

IPC: C07C7/148 ,  C07C7/05 ,  C07C11/167

CPC classification number: C07C7/14875 ,  C07C7/05 ,  C07C11/167

Abstract: The presently disclosed subject matter relates to methods and systems for purifying 1,3-butadiene from a C4 hydrocarbon stream. An example method includes introducing a C4 hydrocarbon stream including 1,3-butadiene and acetlyenes to an organic azide in the presence of a catalyst to generate a first stream including triazole, separating triazole from the first stream to produce a second stream including 1,3-butadiene, and distilling 1,3-butadiene from the second stream to produce a purified 1,3-butadiene product stream.

公开(公告)号：US20190077731A1

公开(公告)日：2019-03-14

申请号：US15765617

申请日：2016-11-08

Applicant: SABIC Global Technologies B.V.

Inventor： Theo VAN DER KORT ,  Kuldeep WADHWA ,  Anthoni VAN ZIJL

IPC: C07C11/167 ,  C07C7/20

Abstract: The presently disclosed subject matter provides a method for inhibiting the formation of popcorn polymer in the vapor phase of a butadiene extraction/purification system. In a non-limiting embodiment, a method for inhibiting the formation of popcorn polymer includes injecting nitric oxide into the upper portion, i.e., headspace of a butadiene distillation column.