新型液化气脱硫剂的吸附与再生性能研究
发布时间：2019-06-06 00:04
【摘要】：采用等体积浸渍法,以ZSM-5分子筛为载体负载具有加氢活性的金属钨和镍制备了系列脱硫剂,以二甲基二硫的正己烷溶液为模型液化气,采用固定床吸附评价方法,考察了金属负载量、吸附温度、吸附压力及液态空速(LHSV)对吸附剂穿透硫容(CS)的影响及加氢工艺条件对脱硫剂再生性能的影响。实验结果表明,随着金属负载量的增加,脱硫剂的CS呈现先增大后减小的趋势,当负载15%(w)WO_3和3%(w)NiO(FL-3)时,脱硫效果最佳;结合BET分析及脱硫剂CS数据可知物理吸附与化学吸附同时存在。最优吸附条件为:25℃,1 MPa,LHSV=1 h~(-1);最优再生条件为:200℃,2 MPa,H2气态空速为1 000 h~(-1),脱硫剂可充分再生。
[Abstract]:A series of desulphurizers were prepared by equal volume immersion method using ZSM-5 molecular sieves as carriers to support metal tungsten and nickel with hydrogenation activity. the n-hexane solution of dimethyl disulfide was used as model liquefied gas and the fixed bed adsorption evaluation method was adopted. The effects of metal loading, adsorption temperature, adsorption pressure and liquid space velocity (LHSV) on the penetrating sulfur capacity (CS) of adsorbents and the effects of hydrogenation conditions on the regeneration performance of desulphurizer were investigated. The experimental results show that with the increase of metal loading, the CS of desulphurizer increases at first and then decreases. When 15% (w) WO_3 and 3% (w) NiO (FL-3 are loaded, the desulphurization effect is the best. Combined with BET analysis and desulphurizer CS data, physical adsorption and chemical adsorption exist at the same time. The optimal adsorption conditions are as follows: 25 鈩，
本文编号：2493916
[Abstract]:A series of desulphurizers were prepared by equal volume immersion method using ZSM-5 molecular sieves as carriers to support metal tungsten and nickel with hydrogenation activity. the n-hexane solution of dimethyl disulfide was used as model liquefied gas and the fixed bed adsorption evaluation method was adopted. The effects of metal loading, adsorption temperature, adsorption pressure and liquid space velocity (LHSV) on the penetrating sulfur capacity (CS) of adsorbents and the effects of hydrogenation conditions on the regeneration performance of desulphurizer were investigated. The experimental results show that with the increase of metal loading, the CS of desulphurizer increases at first and then decreases. When 15% (w) WO_3 and 3% (w) NiO (FL-3 are loaded, the desulphurization effect is the best. Combined with BET analysis and desulphurizer CS data, physical adsorption and chemical adsorption exist at the same time. The optimal adsorption conditions are as follows: 25 鈩，
本文编号：2493916
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