System and process for combusting coal and beneficiated organic-carbon-containing feedstock

A coal combusting system for combusting coal comprising:

• a first input chamber of a coal combusting apparatus configured to pulverize coal and feed it into the coal combusting apparatus in a first concentration of feedstock;
• a second input chamber of the coal combusting apparatus configured to pulverize processed biomass pellets from a processed biomass system and feed it into the coal combusting apparatus in a second concentration of feedstock with the ratio of the first concentration to the second concentration between 1 to 9 and 9 to 1;
• at least one exhaust chamber having a gaseous waste stream and comprising at least one gas separation sub-system configured to separate at least 50 volume % of carbon dioxide from the gaseous waste stream;
• a consumption sub-system configured to receive the separated carbon dioxide gas and consume it in the making of useful materials,
• wherein the processed biomass system is configured to make processed biomass from unprocessed organic-carbon-containing feedstock that includes free water, intercellular water, intracellular water, intracellular water-soluble salts, and at least some plant cells comprising cell walls that include lignin, hemicellulose, and microfibrils within fibrils, the processed biomass system comprising:
• a beneficiation sub-system configured to convert the unprocessed organic-carbon-containing feedstock into a processed organic-carbon-containing feedstock with characteristics that include having an energy density of at least 17 MMBTU/ton (20 GJ/MT), a water content of less than 20 wt %, and a water-soluble intracellular salt content that is decreased more than 60 wt % on a dry basis from that of the unprocessed organic-carbon-containing feedstock;
• and
• a pelletizing sub-system to convert the processed organic-carbon-containing feedstock into processed biomass pellets.