原位制备再生型纳米氧化锌高温煤气脱硫剂

发布时间：2018-04-20 22:23

  本文选题：纳米氧化锌 + 原位制备　； 参考：《天然气化工(C1化学与化工)》2017年04期

【摘要】：为解决高温煤气脱硫剂在使用过程中的粉化问题,设计了一种独特的脱硫剂原位制备方法。首先采用固相法合成纳米硫化锌前驱体,再通过对前驱体进行原位再生从而得到再生型纳米氧化锌脱硫剂。考察了前驱体再生过程中再生温度、氧气体积分数和再生空速对脱硫剂再生性能的影响,并使用XRD、TEM和BET等仪器对前驱体和再生型脱硫剂进行了表征。获得了最佳的前驱体再生条件:再生温度650℃、氧气体积分数6%和再生空速4000h~(-1)。对制备的脱硫剂进行了四次硫化再生循环测试。结果显示,该脱硫剂经过四次硫化再生后仍保持较高的机械强度,维持在140N/cm左右,没有出现粉化和涨裂等问题,且硫化性能在多次硫化后也保持稳定。
[Abstract]:In order to solve the problem of pulverization of high temperature gas desulfurizer, a unique in situ preparation method of desulfurizer was designed. Nano-zinc sulfide precursor was synthesized by solid state method, and then regenerated nano-zinc oxide desulfurizer was obtained by in-situ regeneration of the precursor. The effects of regeneration temperature, oxygen volume fraction and regenerated space velocity on the regeneration performance of the desulfurizer were investigated. The precursor and regenerated desulfurizer were characterized by XRD-TEM and BET. The optimum conditions of precursor regeneration were obtained as follows: regeneration temperature 650 鈩，

本文编号：1779720