Coal Tar Processing
The process design for refinery of coal tar under high temperature, the by-product in the process of coke making, plays an important role in ACRE’s business scope. Over the past sixty years, ACRE has not only been contracting 90% tar refinery projects in form of engineering, but also developing new technologies, including more products with high value added. By far, each unit of tar refinery system has reached capacity of 500,000 t/a, with more than 40 categories of by-products in tar refining.
1、Atmospheric-vacuum tar distillation
Technical features：Low energy consumption：gas saved by 20～30% compared with atmospheric distillation
2、Technical naphthalene production by pressurized distillation
Technical features：Low energy consumption：gas saved by 30～40% compared with atmospheric distillation
High naphthalene recovery rate：>96%
3、Production of refined naphthalene, refined anthracene and refined carbazole with box-type crystallizer
High purity products:
Refined naphthalene purity ≥99.98%
Refined anthracene purity ≥96%
Refined carbazole purity ≥95%
In addition to the above-mentioned features, it also includes technologies such as countercurrent type continuous fraction scrubbing and dephenolization, refined phenol production by atmospheric-vacuum distillation, extraction from wash oil by high-efficiency distillation, pitch refinery for producing modified pitch, mesophase pitch, delayed coke and needle coke as well as light oil production by tar fraction hydrogenation, etc.