公开(公告)号：US20180155269A1

公开(公告)日：2018-06-07

申请号：US15735014

申请日：2015-06-12

Applicant: Steven D. BUCHI ,  Alfred A. GUENKEL ,  NORAM International Limited

Inventor： Steven D. Buchi ,  Alfred A. Guenkel

IPC: C07C201/16 ,  C07C205/06 ,  C07C205/17 ,  C01C1/10 ,  C02F1/20

CPC classification number: C07C201/16 ,  C01C1/10 ,  C02F1/20 ,  C02F3/02 ,  C02F2101/345 ,  C02F2101/38 ,  C02F2103/36 ,  C07C205/06 ,  C07C205/17 ,  Y02W10/15

Abstract: A process for removing impurities from crude nitrated aromatic products obtained during the nitration of aromatic compounds. The nitrated aromatic products are purified by treatment with ammonia washing followed by caustic washing. The nitrophenolic-containing wash waters are treated to recover dissolved organics and ammonia, and the stripped ammonia-wash effluent is incinerated. Carbon dioxide, which can accumulate in the process, is purged to the caustic washer.

公开(公告)号：US10155719B2

公开(公告)日：2018-12-18

申请号：US15735014

申请日：2015-06-12

Applicant: NORAM International Limited ,  Steven D. Buchi ,  Alfred A. Guenkel

Inventor： Steven D. Buchi ,  Alfred A. Guenkel

IPC: C07C201/16 ,  C07C205/06 ,  C01C1/10 ,  C07C205/17 ,  C02F1/20 ,  C02F3/02 ,  C02F1/34 ,  C02F101/34 ,  C02F101/38 ,  C02F103/36

Abstract: A process for removing impurities from crude nitrated aromatic products obtained during the nitration of aromatic compounds. The nitrated aromatic products are purified by treatment with ammonia washing followed by caustic washing. The nitrophenolic-containing wash waters are treated to recover dissolved organics and ammonia, and the stripped ammonia-wash effluent is incinerated. Carbon dioxide, which can accumulate in the process, is purged to the caustic washer.