精制沥青进行聚合的温度要介于主要热解温度和次要热解温度之间；
The polymerization temperature of pitch is between the temperature of primary pyrolysis and that of secondary pyrolysis.
以重油催化裂化装置生产的重组分油为原料，采用二次脱沥青精制工艺，可制备二元族烃型橡胶增塑剂。
The dual-group hydrocarbon type rubber plasticizer was prepared using the heavy components in the production of heavy oil catalytic cracking by secondary deasphalting process.
它通过减压渣油脱沥青、溶剂精制、溶剂脱蜡脱油、精制、成型、包装等工艺过程制备而成。
Its manufacture process includes the deasphalting of the vacuum-pressure residual oil, solvent refining, solvent-dewax, refining, shaping and packing.
它通过减压渣油脱沥青、溶剂精制、溶剂脱蜡脱油、精制、成型、包装等工艺过程制备而成。
Its manufacture process includes the deasphalting of the vacuum-pressure residual oil, solvent refining, solvent-dewax, refining, shaping and packing.
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