| 煤气化污水化工处理新流程 |
| |
| 引用本文： | 陈赟,余振江,盖恒军,周永涛,高亚楼,章莉娟,钱宇. 煤气化污水化工处理新流程[J]. 化工进展, 2009, 28(12) |
| |
| 作者姓名： | 陈赟 余振江 盖恒军 周永涛 高亚楼 章莉娟 钱宇 |
| |
| 作者单位： | 华南理工大学化学与化工学院,广东,广州,510640;中煤龙化哈尔滨煤化工有限公司,黑龙江,哈尔滨,154854 |
| |
| 摘 要： | 针对鲁奇加压气化工艺产生的煤气化污水处理现有流程特点提出一种新的化工处理过程,并实现了工业化.分别介绍煤气化污水化工流程处理的新老过程.新流程中,采用酸水汽提塔同时脱除煤气化污水中的氨气和酸性气体,氨气脱除后的煤气化污水pH值由原先的9～11降低至7以下,有利于后续溶剂萃取脱酚.而萃取溶剂甲基异丁基甲酮(MIBK)相比二异丙醚(DIPE)对污水中单元酚和多元酚有更高的分配系数,MIBK的萃取应用将从污水中回收更多的酚类成分,从而在煤气化污水生化处理前COD能进一步降低.
|
| 关 键 词： | 煤气化污水 酸水汽提塔 二异丙醚 甲基异丁基甲酮 萃取 |
A novel chemical process for coal-gasification wastewater treatment |
| |
| CHEN Yun,YU Zhenjiang,GAI Hengjun,ZHOU Yongtao,GAO Yalou,ZHANG Lijuan,QIAN Yu. A novel chemical process for coal-gasification wastewater treatment[J]. Chemical Industry and Engineering Progress, 2009, 28(12) |
| |
| Authors: | CHEN Yun YU Zhenjiang GAI Hengjun ZHOU Yongtao GAO Yalou ZHANG Lijuan QIAN Yu |
| |
| Abstract: | A novel chemical process is introduced for the treatment of coal-gasification wastewater produced from Lurqi gasification, and the process has been industrially realized. Ammonia and acidic gas in coal-gasification wastewater are removed through a sour water stripping tower in the new process, through which the pH value of the treated wastewater is decreased from 9-11 to 7, and hence it is beneficial to the subsequent solvent extraction for phenols. The distribution coefficients of M1BK to phenol and polyhydric phenols are greater than those of DIPE. The application of MIBK as extraction solvent would recover more phenolic substances from wastewater than DIPE. The COD value would be further reduced before the coal-gasification wastewater flowed into the biochemical treatment. |
| |
| Keywords: | coal-gasification wastewater sour water stripping tower DIPE MIBK extraction |
| 本文献已被 万方数据 等数据库收录！ |
|
