Compared with sulfuric acid process, under the premise of ensuring pure benzene quality, the pollution of taracid and waste water contained with acid on environment can be eliminated.
与硫酸法相比，在保证纯苯质量的前提下，可消除酸焦油和含酸废水对环境的污染。
2
A new syntan product prepared with tar phenol and lignin sulfonic acid.
以工业副产物木素磺酸和焦油酚为主要原料研制出一种新的合成鞣剂。
3
The results indicate that acid and alkali catalysts can increase the tar cracking reaction speed and reduce the activation energy due to the activated center.