System and Process for Combusting Coal and Beneficiated Organic-Carbon-Containing Feedstock

摘要

A coal combustion process is described using coal and processed biomass to reduce adverse by-products in a coal combusting apparatus including the reduction of carbon dioxide by at least 50 volume %. The coal feedstock is selected from coal, a coal substitute processed biomass, or an aggregate blend of coal and processed biomass. The biomass feedstock comprises processed biomass pellets. The total energy density is predetermined and can be similar to the coal component or higher than the coal component. The intracellular salt in the processed biomass is at least 60 wt % less for the processed organic-carbon-containing feedstock used to make the processed biomass pellets than that of the starting un-processed processed organic-carbon-containing feedstock.

主权项

1. A coal combusting system for combusting coal in a coal combusting apparatus with less adverse by-products, 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; and 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. 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 b. a pelletizing sub-system to convert the processed organic-carbon-containing feedstock into processed biomass pellets.