Experimental data supported techno-economic assessment of the oxidative dehydrogenation of ethane through chemical looping with oxygen uncoupling

RENEWABLE & SUSTAINABLE ENERGY REVIEWS

卷:149

Article

Luongo, Giancarlo¹  Donat, Felix¹  Kroedel, Maximilian¹  Cormos, Calin-Cristian²  Mueller, Christoph R.¹ 

[1] Swiss Fed Inst Technol, Dept Mech & Proc Engn, Lab Energy Sci & Engn, Leonhardstr 21, CH-8092 Zurich, Switzerland

[2] Babes Bolyai Univ, Fac Chem & Chem Engn, 11 Arany Janos St, RO-400028 Cluj Napoca, Romania

关键词: Ethylene production;    Oxidative dehydrogenation;    Chemical looping;    Techno-economic assessment;    ASPEN Plus (R);   

DOI  :  10.1016/j.rser.2021.111403

来源: Elsevier

【 摘 要 】

Ethylene is an essential building block in the petrochemical industry and it is almost exclusively produced via ethane steam cracking, a well-established albeit highly energy and carbon dioxide intensive process. The oxidative dehydrogenation of ethane is a promising alternative to steam cracking reactions due to its exothermic nature, which decreases the overall energy requirements and carbon footprint. The need of a capital intensive air separation unit for producing oxygen limits its potential for industrial application. The current study investigates an alternative route, i.e. the production of oxygen via chemical looping, where oxygen is released in-situ by suitable oxygen carriers. The chemical looping oxidative dehydrogenation, supported by original experimental data, and the steam cracking processes are simulated with ASPEN Plus (R). A comprehensive analysis of the energy requirements and an economic assessment are carried out for both processes. Compared with state-of-the-art ethane steam cracking, the proposed process provides similar to 28% energy savings per tonnes of ethylene produced and similar to 21% reduction in the resulting ethylene price. Sensitivity analysis show that the economy of the chemical looping oxidative dehydrogenation process is strongly sensitive to the feedstock price.

【 授权许可】

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