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热裂化
thermal cracking
- 延迟减粘是浅度热裂化渣油减粘工艺。
The postponable reduced viscosity process is a thermal cracking one of shallow degree of residual oil. - 热裂化（或更多人称其为低温碎裂）是指沥青混凝土在冻融条件下热膨胀或收缩导致的后果。
Thermal cracking (or low-temperature cracking, as it is more commonly called) is a consequence of the thermal contraction or shrinkage of an asphalt concrete under freezing conditions. - 研究结果表明，采用适当的反应温度和剂油比以及缩短反应时间能有效抑制热裂化反应和氢转移反应的发生，提高丙烯的选择性。
The result showed proper reaction temperature, catalyst to oil ratio and short reaction time may detriment thermal cracking reaction, hydrogen transfer reactions, and get high propylene selectivity.
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