Title:
CONTINUOUS PRODUCTION METHOD FOR 2,4-DINITROCHLOROBENZENE
Document Type and Number:
WIPO Patent Application WO/2022/068057
Kind Code:
A1
Abstract:
Provided is a continuous production method for 2,4-dinitrochlorobenzene. In the method, concentrated nitric acid, concentrated sulfuric acid, and chlorobenzene serve as raw materials; after a mixed acid solution is prepared, chlorobenzene is injected into a reaction chamber of a horizontal tubular reactor from one end thereof; the mixed acid solution is divided into two parts which are injected into said reaction chamber respectively from one end and a middle part of the horizontal tubular reactor; reaction takes place under stirring of stirring bars perpendicular to the axial direction of the tubular reactor. By means of the method, local back mixing during reaction can be eliminated, and the advantage of efficient mass transfer is provided, so that the yield of 2,4-dinitrochlorobenzene is increased, and it is easy to implement industrial scale production; and efficient heat exchange and trace continuity are provided, so that stable control of a nitrification process is achieved, and production of by-products is reduced.
Inventors:
ZHANG ZHIHUA (CN)
JIANG DAHONG (CN)
ZHANG XINYI (CN)
WANG XU (CN)
LI LEI (CN)
CUI BAOCHEN (CN)
JIANG DAHONG (CN)
ZHANG XINYI (CN)
WANG XU (CN)
LI LEI (CN)
CUI BAOCHEN (CN)
Application Number:
PCT/CN2020/135219
Publication Date:
April 07, 2022
Filing Date:
December 10, 2020
Export Citation:
Assignee:
UNIV GUANGDONG PETROCHEM TECH (CN)
International Classes:
C07C201/08; B01J4/00; B01J19/00; B01J19/18; C07C201/16; C07C205/12
Foreign References:
| CN106892823A | 2017-06-27 | |||
| CN101043937A | 2007-09-26 | |||
| CN111647012A | 2020-09-11 | |||
| CN101544568A | 2009-09-30 | |||
| CN102070457A | 2011-05-25 |
Attorney, Agent or Firm:
GUANGZHOU RUNHE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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