System and Process for Combusting Cleaned Coal and Beneficiated Organic-Carbon-Containng Feedstock

摘要

A coal combustion process is described using cleaned 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 comprises an aggregate blend of cleaned 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. The cleaned coal has a sulfur content that is 50 wt % less than that of un-cleaned coal before it passed through the coal-cleaning sub-system.

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 a coal feedstock comprising a processed biomass/cleaned coal blended compact aggregate that comprises at least 10 wt % of a coal having a sulfur content of at least 50 wt % less than that of the content of sulfur in the coal before it passed through a coal cleaning sub-system and at least 10 wt % of a processed biomass from a processed biomass system and to feed the pulverized cleaned coal feedstock into the coal combusting apparatus in a first concentration of feedstock; a second input chamber of the coal combusting apparatus configured to pulverize a processed biomass pellet feedstock from the processed biomass system and to feed the pulverized processed biomass pellet feedstock into the coal combusting apparatus in a second concentration of feedstock with the weight 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 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; b. a coal cleaning sub-system configured to convert un-cleaned coal into cleaned coal having a sulfur content at least 50 wt % less than that of the content of sulfur in the un-cleaned coal before it passed through the coal cleaning sub-system; c. a blending sub-system configured to convert the cleaned coal and some of the processed biomass into processed biomass/cleaned coal blended compact aggregate with a weight ratio of cleaned coal to processed biomass ranging from 1 to 9 to 9 to 1; and d a pelletizing sub-system configured to convert some of the processed organic-carbon-containing feedstock into processed biomass pellets.