The purification of technical naphthalene by stepped static crystallization method in cracked aromatic fraction, which is rich of naphthalene has been developed.
以富含萘的裂解芳烃馏分为原料，开发静态分步结晶法从芳烃馏分中提纯工业萘。
2
The paper also points out, the ideal technology of petroleum naphthalene production is preparing 2,6 DMN from diesel fraction, a product of heavy oil contact cracking.
指出从重油接触裂解柴油馏分中制备2 ，6 -二甲基萘是石油萘生产的最理想的技术方向。
3
A fraction of naphthalene oil from coal tar at high temperature was used as raw material to synthesize a new type of dispersing agent for coal water slurry (CWS).