By adding water into acid sludge of refinery sulfuric alkylation,dilute sulfuric acid and polymer oil can be obtained. When the dilute sulfuric acid react with sodium silicate,precipitated white carbon can will be produced.

• 利用炼油厂硫酸烷基化酸渣,加水分离出稀硫酸和聚合油,稀硫酸与硅酸钠(俗称水玻璃)溶液反应,生产沉淀法白炭黑;