Hydrogenated feedstocks

Figure 5. Effect of feedstock hydrogen content on response to fluid catalytic...

The yields of hydrogen, carbon monoxide and ethylene are important when considering use of biomass as a chemical feedstock. Hydrogen is a valuable product for chemical synthesis and upgrading low quality fuels such as coal and heavy oils. 

Lumped Kinetic or Pseudokinetic Modeis. Lumped kinetic models have some predictive ability outside their original existing data set. Some rate constants are derived and used in a set of coupled, linear, first-order rate equations. Forward and reverse reactions can be included. The set kinetic equations may be used to evaluate variations of feedstock, hydrogen partial pressure, etc. These models require the use of computers to formulate and to use. They do provide additional levels of detail in return. Most current published models have some degree of lumping (36,37). 

Figure 2.6 Process layout of a typical multi-feedstock hydrogen plant [414], Reproduced with the permission of Balzer.

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