NDLI: Comparative Analysis of Advanced H2/Air Cycle Power Plants Based on Different Hydrogen Production Systems From Fossil Fuels

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Gambini, M. Vellini, M.
Copyright Year	2004
Abstract	In this paper two options for H2 production by means of fossil fuels are presented, evaluating their performance when integrated with advanced H2/air cycles. The investigation has been developed with reference to two different schemes, representative both of consolidated technology (combined cycle power plants) and of innovative technology (a new advance mixed cycle, named AMC). The two methods, here considered, to produce H2 are: • coal gasification: it permits transformation of a solid fuel into a gaseous one, by means of partial combustion reactions; • steam-methane reforming: it is the simplest and potentially the most economic method for producing hydrogen in the foreseeable future. These hydrogen production plants require material and energy integrations with the power section, and the best connections must be investigated in order to obtain good overall performance. The main results of the performed investigation are quite variable among the different H2 production options here considered: for example the efficiency value is over 34% for power plants coupled with coal decarbonization system, while it is in a range of 45–48% for power plants coupled with natural gas decarbonization. These differences are similar to those attainable by advanced combined cycle power plants fuelled by natural gas (traditional CC) and coal (IGCC). In other words, the decarbonization of different fossil fuels involves the same efficiency penalty related to the use of different fossil fuel in advanced cycle power plants (from CC to IGCC for example). The CO2 specific emissions depend on the fossil fuel type and the overall efficiency: adopting a removal efficiency of 90% in the CO2 absorption systems, the CO2 emission reduction is 87% and 82% in the coal gasification and in the steam-methane reforming respectively.
Sponsorship	Power Division
Starting Page	687
Ending Page	698
Page Count	12
File Format	PDF
ISBN	0791841626
DOI	10.1115/POWER2004-52154
Conference Proceedings	ASME 2004 Power Conference
Language	English
Publisher Date	2004-03-30
Publisher Place	Baltimore, Maryland, USA
Access Restriction	Subscribed
Subject Keyword	Methane Cycles Hydrogen Carbon dioxide Fossil fuels Combustion Fuels Emissions Integrated gasification combined cycle power stations Absorption Coal Steam Power stations Fuel gasification Hydrogen production Combined cycle power stations Natural gas
Content Type	Text
Resource Type	Article

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