Pitch resin was synthesized from benzaldehyde and heavy oil residue. 利用純芳烴原料和重質(zhì)渣油研制的瀝青樹(shù)脂具有優(yōu)良的耐熱性。
Developing residue oil hydrotreating processing technology is the main tendency of heavy oil deep processing in China. 摘要開(kāi)發(fā)渣油加氫處理技術(shù)是我國重油深加工的主要發(fā)展方向。
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