Rubber oil is one of the important raw materials of rubber industry. The previous products contain high levels of polycyclic aromatic hydrocarbons (PAHs). With the implementation of the EU Directive 2005/69/EC, a complete ban was required on the use of toxic rubber oil from January 1, 2010. In this paper we used furfural as main solvent, purified the Fushun furfural-extract oil using solvent extraction method. The effect of extraction temperature, solvent-oil ratio on the product yield and the PCA content were studied. n-hexane, n-heptane as anti- solvent were added in order to search the ratio effect on the yield and PCA. The experimental results showed that: when solvent-oil ratio was constant, as the temperature rised, the product yield decreased, PCA content firstly increased and then decreased; when the temperature was constant, as solvent oil ratio increased, the yield of the product rate dropped, PCA contents decreased. As the proportion of anti-solvent increased, the yield of product decreased and the PCA content increased. Considering the product quality and yield, the optimum operating conditions in this experiment was: extraction temperature 60?, mass solvent-oil ratio( furfural: oil: n-heptane )= 2:1:0.3. For two-stage extraction under the condition, the product yield was 36.6%, fA was 22.02%, PCA content was 2.58%, meeting EU environmental standard.Keywords: environmental-friendly; rubber oil; furfural; anti- solvent; solvent extraction

Anti-solvent assisting extraction of environmental-friendly rubber oil from furfural extract oil

247th National Meeting (2014)

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