当前位置: X-MOL 学术Glob. Chall. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Development of Thin-Film Composite Membranes from Aromatic Cardo-Type Co-Polyimide for Mixed and Sour Gas Separations from Natural Gas.
Global Challenges ( IF 4.4 ) Pub Date : 2020-03-12 , DOI: 10.1002/gch2.201900107
Garba O Yahaya 1 , Seung-Hak Choi 1 , Melhan M Ben Sultan 1 , Ali Hayek 1
Affiliation  

The consumption of natural gas (NG) is rapidly increasing worldwide as it is becoming the second largest fuel source after coal. However, many of the world gas reserves contain high levels of subquality NG including the presence of carbon dioxide (CO2), hydrogen sulfide (H2S), nitrogen (N2), benzene/toluene/xylene (BTX) etc., in varying amounts (up to 50% v/v in some reserves), which constitute several problems. Membrane‐based NG sweetening/upgrading processes emerge as among the fastest growing technologies, due to their lower capital cost, higher energy savings, greater economic viability, etc. as compared to conventional technologies. Thus, a defective‐free, multilayer thin‐film composite membrane is developed from 6FDA‐Durene/6FDA‐CARDO block co‐polyimide for the separation of sour gas from NG. The membrane shows good performance as it exhibit CO2/CH4 and H2S/CH4 selectivities ranges from 8 to 10 and 15 to 19, respectively, and CO2 and H2S permeance are 122 and 220 GPU, respectively.

中文翻译:


用于天然气混合气和酸性气体分离的芳香族卡多型共聚酰亚胺薄膜复合膜的开发。



天然气(NG)的消费量在全球范围内迅速增加,成为仅次于煤炭的第二大燃料来源。然而,世界上许多天然气储量都含有高含量的次质天然气,包括二氧化碳(CO 2 )、硫化氢(H 2 S)、氮气(N 2 )、苯/甲苯/二甲苯(BTX)等。含量各不相同(某些储备中高达 50% v/v),这构成了几个问题。与传统技术相比,基于膜的天然气脱硫/升级工艺因其较低的资本成本、更高的能源节约、更大的经济可行性等而成为发展最快的技术之一。因此,由 6FDA-Durene/6FDA-CARDO 嵌段共聚酰亚胺开发了一种无缺陷的多层薄膜复合膜,用于分离酸性气体和天然气。该膜表现出良好的性能,其CO 2 /CH 4和H 2 S/CH 4选择性范围分别为8至10和15至19,CO 2和H 2 S渗透率分别为122和220 GPU。
更新日期:2020-03-12
down
wechat
bug