Solvent-Refined-Coal (SRC) Process. Effect of Coal Properties on SRC-II Yields and Relation to Coal Reactivity

摘要

Yield correlation models including process variables and coal properties were developed by regression of SRC pilot unit data. Models using process variables were derived from 145 runs on three pilot units in both SRC-I and SRC-II modes. Coal property submodels were determined from a set of 45 Process Development Unit P-99 runs in terms of a series of linear coal property terms. The complete yield models were then the sum of the process variable and coal property submodels. By separate analysis, Kentucky and Powhatan coals in the larger data base of 145 runs were ranked by the relative magnitudes of the coal correction term in the total liquid and SRC yield models, with the coal taken into account as a class variable which accounts for each coal source. Individual variables from three broad classifications emerge as most important. These are catalytic variables, particularly iron in ash; a proximate analysis variable, particularly hydrogen to carbon ratio; and a maceral analysis variable such as maximum mean reflectance of vitrinite or total reactive macerals.