Abstract: A sorbent is prepared by ion exchange method for removing thiophene from C4 hydrocarbons in refinery.The best industrial preparation for the adsorbent are determined as follows:molecular sieve and attapulgite have respectively been modified in liquid phase at 60℃ for 12 h,with concentrations of the modified solution being 0.1 mol·L-1 and 0.03 mol·L-1,respectively.The modified molecular sieve and attapulgite are washed,filtrated and dried,and then mixed up at a mass ratio of 3:1.Adding 3% silica sol as a binder,the mixed materials are shaped via ball rolling,and dried at 550℃ for 4 h to obtain a finished adsorbent product.It is identified through test that the adsorbent has good adsorption ability to thiophene in the simulated feedstock oil,the content of thiophene at exit can be reduced to below 2 ng·μL-1,and the absorbent can be regenerated many times.
刘佳, 刘丹丹. 液态烃中噻吩脱除剂的研制及工业放大[J]. 现代化工, 2020, 40(9): 204-208.
LIU Jia, LIU Dan-dan. Development and industrial amplification of removal agent for thiophene in liquid hydrocarbon. Modern Chemical Industry, 2020, 40(9): 204-208.
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