武汉纺织大学学报
武漢紡織大學學報
무한방직대학학보
Journal of Wuhan Institute of Science and Technology
2014年
6期
56-60
,共5页
栾丽君%夏明桂%张小刘%叶方伟%杨霄
欒麗君%夏明桂%張小劉%葉方偉%楊霄
란려군%하명계%장소류%협방위%양소
分子筛%液态烃%二甲基二硫醚%吸附脱硫
分子篩%液態烴%二甲基二硫醚%吸附脫硫
분자사%액태경%이갑기이류미%흡부탈류
Molecular Sieve%Liquid Hydrocarbon%Dimethyl Disulfide%Adsorptive Desulfurization
采用浸渍法制备改性分子筛，并用XRD、BET技术对其结构进行表征。采用间歇静态吸附法和连续动态吸附法考察吸附剂在模拟液态烃中对二甲基二硫醚的脱除性能。结果表明：4A分子筛复载金属离子后脱硫效果顺序为4A< Cu4A <Co4A <Ag4A <AgCo4A，复配型AgCo4A分子筛吸附剂在相同条件下脱硫效果最佳。当Ag+离子交换浓度为0.1 mol/L 时制备的复配型AgCo4A分子筛具有最好的脱硫性能，在间歇静态脱硫实验中剂油比为0.02g/ml、吸附时间为1h即可达到吸附平衡，其饱和吸附硫容为3.76mgS/g，脱硫率高达95.74%；连续动态吸附实验中液态烃空速为0.5h-1时可达到最佳吸附状态，脱硫率高达97.95%，饱和吸附硫容为5.71mgS/g。吸附剂具有良好的稳定性和再生性，再生后的静态吸附脱硫率可达93.95%。
採用浸漬法製備改性分子篩，併用XRD、BET技術對其結構進行錶徵。採用間歇靜態吸附法和連續動態吸附法攷察吸附劑在模擬液態烴中對二甲基二硫醚的脫除性能。結果錶明：4A分子篩複載金屬離子後脫硫效果順序為4A< Cu4A <Co4A <Ag4A <AgCo4A，複配型AgCo4A分子篩吸附劑在相同條件下脫硫效果最佳。噹Ag+離子交換濃度為0.1 mol/L 時製備的複配型AgCo4A分子篩具有最好的脫硫性能，在間歇靜態脫硫實驗中劑油比為0.02g/ml、吸附時間為1h即可達到吸附平衡，其飽和吸附硫容為3.76mgS/g，脫硫率高達95.74%；連續動態吸附實驗中液態烴空速為0.5h-1時可達到最佳吸附狀態，脫硫率高達97.95%，飽和吸附硫容為5.71mgS/g。吸附劑具有良好的穩定性和再生性，再生後的靜態吸附脫硫率可達93.95%。
채용침지법제비개성분자사，병용XRD、BET기술대기결구진행표정。채용간헐정태흡부법화련속동태흡부법고찰흡부제재모의액태경중대이갑기이류미적탈제성능。결과표명：4A분자사복재금속리자후탈류효과순서위4A< Cu4A <Co4A <Ag4A <AgCo4A，복배형AgCo4A분자사흡부제재상동조건하탈류효과최가。당Ag+리자교환농도위0.1 mol/L 시제비적복배형AgCo4A분자사구유최호적탈류성능，재간헐정태탈류실험중제유비위0.02g/ml、흡부시간위1h즉가체도흡부평형，기포화흡부류용위3.76mgS/g，탈류솔고체95.74%；련속동태흡부실험중액태경공속위0.5h-1시가체도최가흡부상태，탈류솔고체97.95%，포화흡부류용위5.71mgS/g。흡부제구유량호적은정성화재생성，재생후적정태흡부탈류솔가체93.95%。
we first made preparation of modified molecular sieve by the impregnation method. And then composition and specific surface area of the adsorbents were determined by XRD and BET technique. The method of intermittent static adsorption and continuous dynamic adsorption were used for investigating the desulfurization performance of the adsorbents in liquid hydrocarbon. The results show that the order of desulfurization performance of modified 4A molecular sieve was 4A<Cu4A<Co4A<Ag4A<AgCo4A; The AgCo4A zeolite has better desulfurization performance than Co4A and Ag4A zeolites which is better than the unmodified 4A zeolite in the same condition. The desulfurization rate with the method of intermittent static adsorption can reach 95.74% ,and the saturation point of the sulfur capacity is 3.76mgS/g when Co4A is modified under the following conditions:0.1 mol/L of AgNO 3 , 1 hour of intermittent static adsorption desulfurization time and 0.02g/ml of the ratio of solid and fuel. The desulfurization rate with the method of continuous dynamic adsorption can reach 97.95%when the liquid space velocity is 0.5h-1, the sulfur capacity is 5.71mgS/g in the same condition. The absorbent has good adsorption reproducibility and stability.The static desulfurization rate of regenerated adsorbent is 93.95%.
