Abstract:

The Coking Plant of Liuzhou Iron & Steel Co.Ltd.introduced vacuum benzol stripping process in order to solve the problems such as high steam consumption and large amount of stripped water generated,etc..As a result,the distillation temperature can be effectively lowered by reducing the operating pressure and energy can be saved and effluent can be reduced by utilizing hot lean oil instead of steam.The system under negative pressure is now running stable after commissioning and process improvement,showing more environmental benefits compared with the conventional benzol stripping process under normal pressure.