使用氧化,二氧化和化13X从正常的赫普坦中去除硫化:吸附能力,动力学,选择性,突破和再生
Mohammad Reza Zaeri1, Feridun Esmaeilzadeh2
1Department of Chemical and Petroleum Engineering, School of Chemical, Petroleum and Gas Engineering, Enhanced Oil and Gas Recovery Institute, Advanced Research Group for Gas Condensate Recovery, Shiraz University, Shiraz, 7134851154, Iran.
概括
氧化 (ZnO) 从合成天然气液体 (NGL) 中表现出优异的硫化 (H2S) 吸附. 优化的再生条件实现了超过98%的效率,使得ZnO成为H2S去除的有希望的吸附剂.
科学领域:
- 吸附科学是一种吸附科学.
- 化学工程是化学工程的组成部分.
- 材料科学是一种材料科学.
背景情况:
- 硫化 (H2S) 是天然气液体 (NGL) 中常见的污染物,需要有效的清除过程.
- 像二氧化 (SiO2) 和焦化13X这样的常规吸附剂在容量和再生方面都有局限性.
- 氧化 (ZnO) 由于其化学性质,为H2S吸附提供了一个潜在的替代品.
研究的目的:
- 为了评估ZnO,SiO2和酸13X在正常酸 (nC7) 中的H2S吸附性能.
- 为了研究度,压力和气体混合物成分对H2S去除的作用,使用ZnO.
- 优化 ZnO 的再生过程,以确保其可重复使用性.
主要方法:
- 进行了静态吸附实验,以确定H2S吸附的异热和运动参数.
- 进行了动态吸附研究,以评估H2S在不同压力和空间速度下的突破行为.
- 采用了Box-Behnken设计,以优化使用热静止空气的ZnO再生条件.
主要成果:
- 在环境条件下,ZnO表现出最高的H2S吸附能力 (260-700 mgH2Sg-1) 和选择性 (>3.16).
- 在动态模式中,H2S突破时间受到重量,每小时空间速度 (WHSV) 和压力的显著影响.
- 在285°C的热静止空气中160分钟再生ZnO,在H2S度高达3000ppm时达到98%以上的效率.
结论:
- ZnO 是一种高效的吸附剂,用于从nC7中去除H2S,其性能优于SiO2和青13X.
- 操作压力和WHSV是优化动态系统中H2S去除效率的关键参数.
- 优化的再生协议使 ZnO 的有效再利用成为可能,支持其在工业气体甜化过程中的应用.
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