Ammonia syngas composition

TABLE 1.1 Typical exit syngas compositions (%) of the ammonia synthesis plant and auto-thermal reforming for H2 production... 

Supported palladium catalysts for syngas conversion were characterized by CO chemisorption, ammonia TPD and SEM. Compositional characterization using XRD, MAS NMR and argon adsorption were done at VPI. 

The Koppers-Totzek (K-T) gasifier produces a medium-Btu gas (in the general range of 300 Btu/scf) and has been commercially employed in many different syngas applications, with particular emphasis in the area of ammonia synthesis. The process is carried out at just over atmospheric pressure but at very hi temperatures of over 1870°C. The data in Table 3 [16] give the expected K-T gasifier product composition for an Illinois coal (62% C, 19.1% ash, 4.4% H2, and 5% S plus 02 and H20) that has been ified with a steam-coal ratio (wt/wt) of 0.27 and an oxygen/coal ratio (wt/wt) of 0.7. K-T units vary in size between those that convert about 300 t coal per day and those that convert over 750 t coal per day. 

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