精苯酸焦油渣综合利用研究

Study on Comprehensive Utilization of Acid Tar Slag from Refined Benzol

在用盐析-萃取工艺对焦化精苯废酸进行回收过程中,有少量的酸焦油渣产生。虽然废渣量不大,但若不能对其有效利用,必将影响"盐析-萃取"工艺的推广应用。通过对酸焦油渣的性质分析,并结合焦化生产特点,探讨了废渣的综合利用途径。该种废渣的性质类似于焦化中温沥青,可以作为型煤的粘结剂替代部分软沥青。

In the recovery of used acid from coking refined benzene by means of salting-out-extraction process, small amount of acid tar slag is produced. Though waste slag amount is not in big volume, it can＇ t be effectively used, therefore the promotion and application of salting-out-extraction process will be inevitably influenced. By means of analysis on nature of waste slag and in combination with the feature of coking production, the comprehensive utilization way is discussed. The nature of this slag is similar to coking medium temperature pitch and can be used as binder for coal briquetting instead of part of soft pitch.