公开(公告)号：US20170320728A1

公开(公告)日：2017-11-09

申请号：US15526020

申请日：2015-11-25

Applicant: Haldor Topsøe A/S

Inventor： Niels Ulrik Andersen ,  Per Jul Dahl ,  Vinay Avasthi

IPC: C01B3/02 ,  C01B32/50 ,  C01C1/04 ,  C01B3/12 ,  C01B3/38

CPC classification number: C01B3/025 ,  C01B3/12 ,  C01B3/38 ,  C01B3/48 ,  C01B3/50 ,  C01B32/50 ,  C01B2203/0233 ,  C01B2203/0283 ,  C01B2203/0288 ,  C01B2203/04 ,  C01B2203/0475 ,  C01B2203/048 ,  C01B2203/068 ,  C01B2203/0811 ,  C01B2203/0827 ,  C01C1/04

Abstract: In a process for the elimination of volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) formed as by-products in the shift section (SS) of an ammonia plant, a carbon dioxide (C02) stream from a vent line, which is arranged downstream from the shift section and the C02 removal section, is recycled to the primary reformer (TR) of the ammonia plant. This way, the oxygenates contained in the carbon dioxide vent will be decomposed in the primary reformer burners, and the total emission of VOCs and HAPs will be considerably reduced.