THE COKING PERFORMANCE OF PETROLEUM AND COAL-BASED PRODUCTS I. INFLUENCE OF COCARBONIZATION

Lump cokes obtained from petroleum (LH) and coal based products (SN) were examined by the reflected polarized light microscope. No needle coke with a uniaxial flow texture was made from LH or SN feedstock under various carbonization conditions. Compared to the direct coking method, better lump cokes were obtained from blended feedstocks by pre heat treating and subsequent coking. The best coke was made from mixed feedstocks at weight radio of 3/2 (LH/SN) under the conditions of pre heat treating at 440?℃ and 1?MPa for 3.5?h and subsequent coking at 530?℃ and 1?MPa for 8?h.