Journal
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
Volume 102, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2022.104546
Keywords
Dimethyl ether; Hydrogen; Blue; Green; Integration; Reaction cluster
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Funding
- University of California Los Angeles (UCLA) , United States
- Saudi Basic Industries Corporation (SABIC) , Saudi Arabia
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The process integrates multiple key technologies to produce dimethyl-ether and hydrogen from natural gas in an energetically self-sufficient manner. Through thermodynamic analysis and operational cost analysis, suitable operational strategies and solutions are proposed.
A novel, energy integrated process is presented that co-produces dimethyl-ether and hydrogen from natural gas, emits no carbon dioxide, and employs commercially available technologies. The principal technologies employed in the process network include incomplete combustion, steam-methane reforming (SMR), and DME production from CO/CO2 and H2. Thermodynamic analysis, in the context of energetic self-sufficiency, identifies operating limits on the proposed process in terms of the molar flow ratio of oxygen consumed to DME produced. A suitable reaction cluster using the principal technologies is identified and used to produce a feasible process flowsheet. The flowsheet is heat and power integrated to identify suitable energetically self-sufficient operating points, upon which a preliminary operating cost analysis is carried out using current market prices for natural gas, DME, hydrogen, water and electricity.
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