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A HIGH PRESSURE METHOD OF BITUMEN EXTRACTION FROM ASPHALT PAVEMENT

 

作者: ThomasJ. Houser,  

 

期刊: Fuel Science and Technology International  (Taylor Available online 1992)
卷期: Volume 10, issue 4-6  

页码: 565-580

 

ISSN:0884-3759

 

年代: 1992

 

DOI:10.1080/08843759208916011

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

A new. less costly method of extracting bitumen from asphalt pavament mixtures has been developed which gives bitumen contents essentially the same as those obtained by the currently used centrifuge method. The preferred solvent is cyclohexane (although cyclopentane may be used) at high temperatures and pressures. The new method uses these non-chlorinated solvents at high temperatures and pressures (but sub-critical) to dissolve and extract asphalt from the mix in a stainless steel extractor vessel. Although these solvents are less hazardous to the health of the laboratory personnel than chlorinated solvents, they can be a fire hazard unless reasonable precautions are exercised

 

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