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一种3,4-二氯硝基苯的连续结晶提纯方法

InventionUnknown
10Claims · 2 independent
§ Ⅰ

Dossier Overview

Inventor

周智慧; 方晓红; 沈忆杭; 余辉; 邹俊

Filing Date

Aug 5, 2026

Publication Date

Oct 27, 2026

IPC Classification

C07C 201/16 (2006.01)C07C 205/12 (2006.01)B01D 9/02 (2006.01)B01D 19/00 (2006.01)B01D 21/02 (2006.01)B01D 3/14 (2006.01)G05B 19/418 (2006.01)

本发明属于精细化工分离技术领域,公开了一种3,4‑二氯硝基苯的连续结晶提纯方法及系统。本发明从物料热稳定性保护、异构体精准分离、精馏能耗梯级利用、焦化副反应抑制、物料全量回收多维度,彻底解决传统精馏工艺热敏物料焦化严重、产品纯度受限、色度超标、残料损耗大、能耗高、量产稳定性差的核心技术难题。本发明无需催化剂改性与复杂设备改造,通过精馏工况重构、热集成系统优化与杂质分段脱除机制创新,大幅降低物料高温分解概率与焦化杂质生成量,显著提升成品纯度与色相品质,有效降低全线精馏能耗与物料损耗。

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