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Liquefaction of coal by SRC‐II process: Part II: Simulation of an SRC‐II recycle system
Author(s) -
Singh C. P. P.,
Shah Y. T.,
Carr N. L.
Publication year - 1982
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450600209
Subject(s) - isothermal process , work (physics) , yield (engineering) , liquefaction , degrees of freedom (physics and chemistry) , process engineering , coal , process (computing) , ideal (ethics) , coal liquefaction , environmental science , chemistry , engineering , computer science , waste management , mechanical engineering , thermodynamics , law , physics , organic chemistry , political science , operating system
Abstract The kinetic model, described in the preceeding paper, is used in this work to obtain a general simulation of an SRC‐II recycle system. The present simulation considers the reactor to be isothermal and fully backmixed, reactions in the preheater to have insignificant influence on yields, and separation of the products into various fractions to be ideal. The concept of degrees of freedom is used to evaluate the number of independent variables for the complete (recycle) system. The model is validated against data from three different pilot plants on Powhatan, Kentucky, and Ireland Mine coals. The effects of various variables on yield behavior and distribution of solids throughout the system are illustrated. Operational difficulties encountered in increasing the recycle ratio of bottoms, containing solids, above 0.75 is explained.