Preparation process optimization of crosslinked EC pervaporation membrane for gasoline desulfurization
In order to further improve the desulfurization performance of ethyl cellulose (EC) membrane,acrylate monomer and EC polymer are used to synthesize crosslinked EC membrane.The membrane structure is characterized by IR spectroscopy and scanning electron microscopy.The model gasoline is used to evaluate the desulfurization performance.The effects of solid content,crosslinking agent content and temperature on the permeation flux and enrichment factor of the membrane are investigated.The results show that higher content of EC and crosslinking agent can make both the permeation flux and enrichment factor first increased and then decreased.There is a maximum value.Increasing the membrane-forming temperature and desulfurization temperature results in the increase of the permeation flux and the gradual decrease of the enrichment factor.On the basis of the results,the optimum conditions of desulfurization are suggested as follows:18％ mass fraction of the solid content,21％-22％ mass fraction of the crosslinking agent content,50℃ of the membrane-forming temperature and 80℃ of the desulfurization temperature.
pervaporationcrosslinked EC membranedesulfurization of gasoline
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万方数据
维普
