Thermally moderated hollow fiber sorbent modules in rapidly cycled pressure swing adsorption mode for hydrogen purification

材料科学 吸附剂 纤维 变压吸附 化学工程 吸附 石蜡 复合材料 吸附 颗粒 解吸 图层(电子) 弹丸 多孔性 化学 有机化学 工程类
作者
Ryan P. Lively,Naoki Bessho,Dhaval A. Bhandari,Yoshiaki Kawajiri,William J. Koros
出处
期刊:International Journal of Hydrogen Energy [Elsevier BV]
卷期号:37 (20): 15227-15240 被引量:49
标识
DOI:10.1016/j.ijhydene.2012.07.110
摘要

We describe thermally moderated multi-layered pseudo-monolithic hollow fiber sorbents entities, which can be packed into compact modules to provide small-footprint, efficient H2 purification/CO2 removal systems for use in on-site steam methane reformer product gas separations. Dual-layer hollow fibers are created via dry-jet, wet-quench spinning with an inner "active" core of cellulose acetate (porous binder) and zeolite NaY (69 wt% zeolite NaY) and an external sheath layer of pure cellulose acetate. The co-spun sheath layer reduces the surface porosity of the fiber and was used as a smooth coating surface for a poly(vinyl-alcohol) post-treatment, which reduced the gas permeance through the fiber sorbent by at least 7 orders of magnitude, essentially creating an impermeable sheath layer. The interstitial volume between the individual fibers was filled with a thermally-moderating paraffin wax. CO2 breakthrough experiments on the hollow fiber sorbent modules with and without paraffin wax revealed that the "passively" cooled paraffin wax module had 12.5% longer breakthrough times than the "non-isothermal" module. The latent heat of fusion/melting of the wax offsets the released latent heat of sorption/desorption of the zeolites. One-hundred rapidly cycled pressure swing adsorption cycles were performed on the "passively" cooled hollow fiber sorbents using 25 vol% CO2/75 vol% He (H2 surrogate) at 60 °C and 113 psia, resulting in a product purity of 99.2% and a product recovery of 88.1% thus achieving process conditions and product quality comparable to conventional pellet processes. Isothermal and non-isothermal dynamic modeling of the hollow fiber sorbent module and a traditional packed bed using gPROMS® indicated that the fiber sorbents have sharper fronts (232% sharper) and longer adsorbate breakthrough times (66% longer), further confirming the applicability of the new fiber sorbent approach for H2 purification.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
落落完成签到,获得积分10
1秒前
Yan完成签到 ,获得积分10
2秒前
2秒前
谨慎的凝丝完成签到 ,获得积分10
3秒前
雨洋完成签到,获得积分10
4秒前
chi完成签到 ,获得积分10
5秒前
还单身的湘完成签到,获得积分10
7秒前
fyjlfy完成签到 ,获得积分10
7秒前
深情安青应助Nayvue采纳,获得10
8秒前
研友_Y59785完成签到,获得积分0
8秒前
Xiaoxiao发布了新的文献求助10
9秒前
初初见你完成签到,获得积分10
16秒前
19秒前
思源应助淡淡月饼采纳,获得20
19秒前
dd完成签到 ,获得积分10
20秒前
Nayvue发布了新的文献求助10
24秒前
未来的幻想完成签到,获得积分10
26秒前
Kvolu29完成签到,获得积分10
27秒前
长理物电强完成签到,获得积分10
28秒前
若安在完成签到,获得积分10
29秒前
完美世界应助潘特采纳,获得10
30秒前
拼搏问薇完成签到 ,获得积分10
30秒前
单薄乐珍完成签到 ,获得积分0
33秒前
张静枝完成签到 ,获得积分10
33秒前
六步郎完成签到,获得积分10
33秒前
啊怙纲完成签到 ,获得积分10
35秒前
量子星尘发布了新的文献求助10
37秒前
scott_zip完成签到 ,获得积分10
38秒前
gxl完成签到,获得积分0
42秒前
xxx完成签到 ,获得积分10
45秒前
45秒前
努力生活的小柴完成签到,获得积分10
47秒前
49秒前
tangyong完成签到,获得积分10
51秒前
长安发布了新的文献求助10
51秒前
SucceedIn完成签到,获得积分10
52秒前
53秒前
56秒前
海洋岩土12138完成签到 ,获得积分10
57秒前
lzz完成签到 ,获得积分10
57秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038184
求助须知:如何正确求助?哪些是违规求助? 3575908
关于积分的说明 11373872
捐赠科研通 3305715
什么是DOI,文献DOI怎么找? 1819255
邀请新用户注册赠送积分活动 892662
科研通“疑难数据库(出版商)”最低求助积分说明 815022