Processing method for removing pyridine compound from coal coking crude benzene by fixed bed supplemental refining and hydrorefining processing

一种煤焦化粗苯脱吡啶类化合物-固定床补充精制-加氢精制的加工方法

Abstract

本发明以煤焦化粗苯为原料,提供了一种利用固定床补充精制煤焦化粗苯加氢精制的加工方法。将焦化粗苯原料脱除重苯后在换热器中换热到常温~78℃,再与脱吡啶类化合物用剂在静态混合器中进行混合反应后,经沉降罐沉降分渣,沉渣从沉降罐底部排出,精制粗苯经电沉降罐之后,沉渣从底部排出,上层粗苯再经水洗或/和固定床脱除焦化粗苯在脱吡啶类化合物过程中存在的残留组分,精制后的粗苯经换热器换热后进入加氢装置进行加氢精制处理,得到的液体苯进入苯分离塔中,得到产品精制苯、甲苯、二甲苯。本发明方法脱除了焦化粗苯在脱吡啶类化合物过程中存在的残留组分,避免了对加氢的影响。

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    CN-103160331-BDecember 10, 2014陕西煤业化工技术研究院有限责任公司System and process for preparing PTA/PET (Pure Terephthalic Acid/Polyethylene Terephthalate) based on pyrolysis and gasification devices