Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Hydrogen production, Chapter

The effects of reactor type, process variables and feedstock type, catalysts, and feedstock composition (Chapters 5 and 6) on the desulfurization process provide a significant cluster of topics through which to convey the many complexities of the process. In the concluding chapters, examples and brief descriptions of commercial processes are presented (Chapter 7) and, of necessity, some indications of methods of hydrogen production (Chapter 8) are also included. [Pg.9]

The first part comprising three chapters deals with nuclear power as the primary energy source for producing electricity and process heat / steam which could be utilized for hydrogen production. Chapter 2 treats the design of nuclear power plants for process heat application and the components required. Safety considerations described in chapter 3 concentrate on the aspects that are peculiar to nuclear process heat plants. International activities on using nuclear power to be utilized in process heat applications, for example for hydrogen production in the past, present, and future are listed in chapter 4. [Pg.5]

The book is composed of three parts (One) membrane reactors for syngas and hydrogen production (Chapters 1-9) (Two) membrane reactors for other energy applications (Chapters 10-15) and (Three) membrane reactors for basic chemical production (Chapters 15-21). [Pg.683]

In the petrochemical field, hydrogen is used to hydrogenate benzene to cyclohexane and benzoic acid to cyclohexane carboxylic acid. These compounds are precursors for nylon production (Chapter 10). It is also used to selectively hydrogenate acetylene from C4 olefin mixture. [Pg.113]

Kermode, R.I., Hydrogen from fossil fuels, in Hydrogen Its Technology and Implications, Section 3.2.2, Chapter 3, Vol. 1—Hydrogen Production Technology, eds., K.E. Cox, and K.D. Williamson, CRC Press, Cleveland, OH, 1977. [Pg.320]

There are several types of hydrogen production techniques. Most of the techniques were described in the previous chapters. In all these processes (Figure 15.19), continuous hydrogen monitoring is highly desired. [Pg.518]

The use of such natural hydrogen production machines in combination with the natural process of photosynthesis is the topic of an international NEDO project for the development of a semiartificial device for hydrogen production. On the occasion of the second meeting of all groups involved in this project, an international symposium on Biohydrogen was organized in Kyoto 2002. The state of the art of biohydrogen production from participants of this symposium is summarized in the chapters of this book. [Pg.193]

Chapter four is concerned with hydrogen production and storage... [Pg.8]

In the light of the projected growth of demand for energy services, particularly electricity, there is a renewed interest in the extension of nuclear power in some countries. With uranium being a finite resource as well, Chapter 4 focuses primarily on the question of a future expansion of nuclear power in the context of the availability of nuclear fuels. Moreover, the evolution of the next generation of nuclear reactors, such as breeder reactors or reactors suitable for hydrogen production, is addressed. [Pg.3]

Chapter 12 discusses and analyses the different options for hydrogen distribution -pipelines and trailers (including liquefaction) - from a technical and economic point of view, in the same way as the hydrogen production technologies in Chapter 10. Further, different hydrogen refuelling station concepts are described and the necessity for the development of codes and standards addressed. [Pg.5]

The (additional) costs of C02 capture in connection with hydrogen production from natural gas or coal are mainly the costs for C02 drying and compression, as the hydrogen production process necessitates a separation of C02 and hydrogen anyway (even if the C02 is not captured). Total investments increase by about 5%-10% for coal gasification plants and 20%-35% for large steam-methane reformers (see also Chapter 10). [Pg.183]

For a more detailed description of hydrogen-production technologies, see Chapter 10. [Pg.221]

Hydrogen for industrial facilities is mainly produced where it is also immediately used (so-called captive hydrogen ). Only around 5% of total hydrogen production is sold on the free market and transported in liquid or gaseous form in trailers or pipelines (so-called merchant hydrogen ). Hydrogen pipelines have already been operated by the chemical industry in the United States and in Europe (particularly Germany, France and the Netherlands) for decades (see also Chapter 12). [Pg.279]

With respect to the German case study used in Chapter 14 to discuss the build-up of a hydrogen infrastructure, Fig. 10.9 shows where surplus hydrogen capacities (from chlorine-alkali electrolysis) exist in Germany. If these capacities are added up, the resulting total amount is about 1 billion Nm3 per year (around 4% of total German hydrogen production). [Pg.300]

This section aims to give a brief review of the different types of fuel cell and their most important properties. With regard to hydrogen production, the focus is on the fuel gases used and the requirements made of their purity. Within the scope of this publication, it is not possible to describe the different fuel cell systems in any detail. References are made to the relevant specialist literature (see also, the Further reading section at the end of this chapter). [Pg.352]

For the limitations of this publication, it is not possible to present a comprehensive set of the data used as input to the model. In principle, the model is based on the technoeconomic characteristics of hydrogen production and distribution technologies, as presented in Chapters 10 and 12, respectively, such as specific investments for certain plant sizes, full load hours, process efficiencies, maintenance and labour costs, etc. [Pg.410]

In addition to the chapters discussing the various aspects of bio-energy, two chapters are dedicated to hydrogen production and fuel cells. A second book in this series, based on a second workshop, Catalysis for Sustainable Energy Production (organized by IDECAT - the European Network of Excellence on catalysis, see Preface), will discuss these aspects in more detail. [Pg.388]

A second reason for the slow substitution of biomass for fossil fuels is an economic one. The economic issues of hydrogen production are dealt with in Chapter 15. Hydrogen produced from fossil fuel under conditions in which carbon dioxide is sequestered is compared with the economics of hydrogen produced from biomass. [Pg.405]

In the ideal biphasic hydrogenation process, the substrate will be more soluble or partially soluble in the immobilization solvent and the hydrogenation product will be insoluble as this facilitates both reaction and product separation. Mixing problems are sometimes encountered with biphasic processes and much work has been conducted to elucidate exactly where catalysis takes place (see Chapter 2). Clearly, if the substrates are soluble in the catalyst support phase, then mixing is not an issue. The hydrogenation of benzene to cyclohexane in tetrafluoroborate ionic liquids exploits the differing solubilities of the substrate and product. The solubility of benzene and cyclohexane has been measured in... [Pg.166]


See other pages where Hydrogen production, Chapter is mentioned: [Pg.609]    [Pg.91]    [Pg.121]    [Pg.382]    [Pg.21]    [Pg.26]    [Pg.35]    [Pg.128]    [Pg.148]    [Pg.532]    [Pg.137]    [Pg.381]    [Pg.4]    [Pg.5]    [Pg.5]    [Pg.6]    [Pg.120]    [Pg.168]    [Pg.169]    [Pg.277]    [Pg.279]    [Pg.282]    [Pg.286]    [Pg.391]    [Pg.411]    [Pg.441]    [Pg.441]    [Pg.482]    [Pg.499]    [Pg.517]    [Pg.586]    [Pg.587]   
See also in sourсe #XX -- [ Pg.2 , Pg.279 , Pg.280 ]




SEARCH



Production (chapter

© 2024 chempedia.info