The inferior vacuum residue produced with Middle East crudeoil can be used as raw material of delayed coking and asphalt.
由中东原油生产的劣质减压渣油，可作为延迟焦化原料，也是生产沥青的好原料。
2
Aimed at the characteristic of Liaohe super heavy crudeoil such as high content of heavy metal, carbon residue, gum and asphaltene, the demetallization agent for delayed coking unit was developed.