This chapter focuses on the study of hydrogen selective membranes from an economic perspective. The first section provides an overview of the classification of membranes for hydrogen separation, while the second section describes their preparation technology in detail. Pd-based membranes are also examined, and the correct manufacturing strategy identified, with the aim of improving their industrial competitiveness by lowering production costs. The last section deals with the analysis of the water gas shift (WGS) reaction as a case study, and in particular its application downstream to a reforming step plant in order to reduce the CO content in the exhaust stream. Two possibilities of coupling a membrane with a water gas shift reactor (WGSR) are investigated: either as an open architecture, where hydrogen separation modules are located before and/or after the WGSR, or as an integral WGSR membrane reactor (closed architecture), where reaction and separation occur in a single step. After a literature review focusing on the use of membranes for hydrogen separation in the WGS reaction, the next section discusses the mathematical modeling of a WGS membrane reactor, comparing the performances of the two proposed configurations. The last part of the chapter focuses on a preliminary techno-economic analysis, comparing conventional technology with membrane assisted WGSR developed around open architecture.
|Titolo:||Palladium-based membranes for hydrogen separation: Preparation, economic analysis and coupling with a water gas shift reactor|
|Data di pubblicazione:||2013|
|Appare nelle tipologie:||2.1.2 Articolo su libro con ISBN|