ES425161A1 - Briquetting of reactive coal calcinate with high temperature coke oven pitch - Google Patents

Abstract

Procedure for the production of briquettes from mixtures of bituminous binder and reactive coal fired, produced (1) by treating crushed coal to a minimum of 121ºC and below the tar production temperatures in the presence of oxygen to produce catalyzed particles of coal; (2) by shock wave heating the catalyzed particles to the tar producing temperatures, typically 260-482ºC in a fluidized bed carbonizer or a series of them, to remove substantially all suspended condensible vapors; (3) by subsequently heating the particles to higher temperatures, typically 760-871ºC gas outlet temperature, to remove non-condensable volatiles, to produce a calcined reactive coal that preferably contains no more than 3 volatiles, but at least 1% hydrogen; and (4) cooling the calcined in an inert atmosphere to a temperature at which it can be handled in air; and where the calcined and the bituminous binder are mixed in a compressible mixture, the mixture is arranged in crude briquettes, and the crude briquettes are cured in an oxygen containing atmosphere to produce strong and cured briquettes that can be coked to obtain briquettes with a volatile content of less than 3%; characterized in that it comprises applying water to the calcined with which adsorbs a minimum of 3% of the weight of the calcined up to the saturation level of the calcined, using as a binder a coke oven pitch with by-product recovery. (Machine-translation by Google Translate, not legally binding)