The K&O,-catalysed steam gasification of coal chars, obtained by the Supercritical Gas Extraction (SGE) process, is studied. Kinetics experiments used a gravimetric technique at atmospheric pressure and at temperatures ranging from 700 to 800Β°C. It was found that K&O, is an effective catalyst for st
Effectiveness of K2CO3 and Ni as catalysts in steam gasification
β Scribed by Takayuki Takarada; Yasukatsu Tamai; Akira Tomita
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 659 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0016-2361
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Kinetic studies have been carried out to describe the dependence of the K,CO, catalysed steam and CO, gasification of Westerholt coal char on temperature, pressure and the composition of gasifying agents. By using a low ash char with two different catalyst loadings, it was possible to elucidate the
Potassium, Na and Ca are excellent catalysts for the gasification of Saran char by steam. Hydrogen inhibits catalysis by K, Na and Ca but promotes catalysis by Fe. The extent of the effect of H,S (or COS) on inhibiting char gasification by steam depends upon whether it is added to wet N, or wet HZ.
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