中石化6月1日起统一上调液化石油气、石油焦、重油等产品售价，上涨幅度在每吨100元以上。
Sinopec has raised the prices of liquefied petroleum gas (LPG), petroleum coke and heavy oil, by more than RMB100 per ton from June 1.
重油深度加工是合理利用石油资源的重要途径。
Heavy oil processing is a very important way to make reasonable use of petroleum resource.
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。
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.
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