Analysis of lurgi gasification of two U.S. Coals

✍ Scribed by Heeyoung Yoon; James Wei; Morton M. Denn

• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 603 KB
• Volume: 34
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(79)87009-8

✦ Synopsis

Ahstraet

-A mathematical model of movrng bed coal gasification IS used to determrne the performance of two U S coals m a presstmzed Lurgi gastier Au and oxygen blasts are considered Opttmum feed con&Ions are htghly dependent on coal type and oxidant. with high activity Wyommg coal requumg less oxygen and less steam to gasify a gven amount of fixed carbon than low achvlty Ilhnois coal The different steam to oxygen ratios for the two coals result m markedly different H&O ratios m the product gas Optunum operation requues that the combustion zone be marntamed at a gwen &stance above the ash grate Calculations m the neighborhood of the optimum define process variables that can be used to Infer devlatlons from optimum condltlons tPresent address Conoco Coal Development Co , L~brarywlle,