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use the van der Waals equation of state to calculate density and finally the
steam tables. Compare the values obtained. What is your conclusion?
10.9 Consider an aqueous feedstock with 10 wt% organics (take glucose for the cal-
culations). This solution is gasified at 600 C and 25.0 MPa (abs.), and the reac-
tor effluent is heat exchanged with the feed at an efficiency of 70%. Estimate
the amount of energy that has to be provided to the reactor per kg of (wet) feed.
You may assume that the reaction reaches equilibrium.
PROJECTS
P10.1 With access to a TGA analyzer, you can determine the reactivity of a typical
BBQ (barbecue) char with CO 2 . Under which conditions do you expect can
the kinetics be determined without being biased by mass and heat transfer
effects?
P10.2 Develop a process scheme for gasification of woody biomass to produce
the biofuel dimethyl ether (DME). Set up mass and energy balances for a
production plant of 40 kt
year −1 .
INTERNET REFERENCES
tinyurl.com/9s23f
http://www.nist.gov
tinyurl.com/pwo46l4
http://www.tarweb.net
REFERENCES
Abu El-Rub Z, Bramer EA, Brem G. Review of catalysts for tar elimination in biomass gasi-
fication processes. Ind Eng Chem Res 2004;43:6911-6919.
Abu El-Rub Z, Bramer EA, Brem G. Experimental comparison of biomass chars with other
catalysts for tar reduction. Fuel 2008;87:2243-2252.
Akiti TT, Constant KP, Doraiswamy LK, Wheelock TD. A regenerable calcium-based core-in-
shell sorbent for desulfurizing hot coal gas. Ind Eng Chem Res 2002;41:587-597.
Antal MJ, Allen SG, Schulman D, Xu X. Biomass gasification in supercritical water. Ind Eng
Chem Res 2000;39:4040-4053.
Aravind PV, De Jong W. Evaluation of high temperature gas cleaning options for biomass gas-
ification product gas for solid oxide fuel cells. Prog Energy Combust Sci 2012;38:737-764.
Arthur JR. Reactions between carbon and oxygen. Trans Faraday Soc 1951;47:164-178.
 
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