Steam methane reforming is the most common process for producing hydrogen in the world. It currently represents the most efficient and mature technology for this purpose. However, because of the high investment costs, this technology is only convenient for large sizes. Furthermore, the cooling of syngas and flue gas produce a great amount of excess steam, which is usually transferred outside the process, for heating purposes or industrial applications. The opportunity of using this additional steam to generate electric power has been studied in this paper. In particular, different power plant schemes have been analyzed, including (i) a Rankine cycle, (ii) a gas turbine simple cycle, and (iii) a gas-steam combined cycle. These configurations have been investigated with the additional feature of capture and sequestration. The reference plant has been modeled according to state-of-the-art of commercial hydrogen plants: it includes a prereforming reactor, two shift reactors, and a pressure swing adsorption unit for hydrogen purification. The plant has a conversion efficiency of and produces of hydrogen (equivalent to on the lower-heating-volume basis) and of superheated steam. The proposed power plants generate, respectively, (i), (ii), and (iii) without capture. A sensitivity analysis was carried out to determine the optimum size for each configuration and to investigate the influence of some parameters, such as electricity, natural gas, and steam costs.
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April 2007
Technical Papers
A Technoeconomic Analysis of Different Options for Cogenerating Power in Hydrogen Plants Based on Natural Gas Reforming
Alessandro Corradetti,
Alessandro Corradetti
Dipartimento di Ingegneria Industriale,
Università di Perugia
, Via G. Duranti 93, 06125 Perugia, Italy
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Umberto Desideri
Umberto Desideri
Dipartimento di Ingegneria Industriale,
e-mail: umberto.desideri@unipg.it
Università di Perugia
, Via G. Duranti 93, 06125 Perugia, Italy
Search for other works by this author on:
Alessandro Corradetti
Dipartimento di Ingegneria Industriale,
Università di Perugia
, Via G. Duranti 93, 06125 Perugia, Italy
Umberto Desideri
Dipartimento di Ingegneria Industriale,
Università di Perugia
, Via G. Duranti 93, 06125 Perugia, Italye-mail: umberto.desideri@unipg.it
J. Eng. Gas Turbines Power. Apr 2007, 129(2): 338-351 (14 pages)
Published Online: August 10, 2006
Article history
Received:
June 13, 2006
Revised:
August 10, 2006
Citation
Corradetti, A., and Desideri, U. (August 10, 2006). "A Technoeconomic Analysis of Different Options for Cogenerating Power in Hydrogen Plants Based on Natural Gas Reforming." ASME. J. Eng. Gas Turbines Power. April 2007; 129(2): 338–351. https://doi.org/10.1115/1.2434346
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