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Towards the development of cavitation technology for upgrading bitumen： viscosity change and chemical cavitation yield measurements

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Petroleum Science 2017年第2期14卷 404-411页

作者： Deepak M. Kirpalani Dipti Prakash Mohapatra Energy Mining and Environment Portfolio National Research Council of Canada 1200 Montreal Road Ottawa ON K1A 0R6 Canada

Among the different methods used for reducing viscosity of bitumen,acoustic cavitation during sonication is well *** chemical methods were used to detect the production of reactive species such as hydroxyl radicals and hydrogen peroxide during acoustic cavitation ***,quantification of cavitation yield in sonochemical systems is generally limited to low frequencies and has not been applied to bitumen *** empirical determination of the cavitation yield in midto high-frequency range（378,574,850,992,and1173 k Hz）was carried out by measuring the amount of iodine liberated from the oxidation of potassium iodide（KI）.Further,cavitation yield and the effects of different sonic operating conditions such as power input（16.67%–83.33%）and solute concentration on cavitation yield were carried out in KI solution and sodium carboxymethyl cellulose–water mixture to obtain benchmark changes in rheology and chemistry using these two model *** findings were then applied to bitumen upgrading through *** this study,it was found that the chemical cavitation yield peaked with a sonication frequency of 574 k *** was also found that cavitation yield and viscosity change were correlated directly in bitumen and a 38%lower bitumen viscosity could be obtained by acoustic cavitation.

关键词： Bitumen Cavitation yield CMC-water KI solution viscosity correlation

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