# US 2010/0121128 A1 · Method and apparatus for thermochemical conversion of materials > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0121128 A1 - Document ID: US20100121128A1 - Status: Published application - Kind: A1 - Application number: 11/407,770 - Filed: 2006-04-19 - Published: 2010-05-13 - Earliest claimed: 2006-04-19 - Inventors: Robert L. Hance; John E. Kane; Stephanie G. Dye - Web page: https://patentgrep.com/patent/US20100121128A1 ## CPC - F23G 7/003: {for used articles} - F23G 2203/504: with essentially horizontal flow of bed material - F23G 2900/50804: using thermit or other compositions of metal oxides as auxiliary fuel - Y02E 20/12: Heat utilisation in combustion or incineration of waste - F23G: CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A system for treating carbon-containing or silicon-containing end-of-life material includes a reactor 10 for simultaneously supporting oxidation of the waste material and conversion of CO2 within the reactor. A metal oxide or metal is input to the reactor to convert the CO2 to a mineralized CO2 product. A cold trap 44 is provided for capturing exhaust gases from the reactor and returning condensate to the reactor, and a pump 50 maintains a desired vacuum or pressure within the reactor and the cold trap. ## Claims ### Claim at position 1 1-14. (canceled) ### Claim 15 A method for treating a carbon-containing waste material, comprising: supporting simultaneous oxidation of the waste material and conversion to CO2 in a reaction chamber of a reactor; simultaneously with said oxidation and conversion, inputting a metal oxide or metal to the reaction chamber to convert the CO2 to a mineral product; capturing exhaust gases from the reaction chamber; returning at least a portion of the captured exhaust gases to the reaction chamber; and maintaining a desired pressure within the reaction chamber. ### Claim 16 (depends on 15) A method as defined in claim 15, further comprising: inputting fuel to the reactor; and inputting a reaction gas or vapor to the reactor. ### Claim 17 (depends on 16) A method as defined in claim 16, wherein the fuel and the reaction gases input to the reactor generate a reaction temperature of at least about 300° C. and less than about 900° C. ### Claim 18 (canceled) ### Claim 19 (depends on 15) A method as defined in claim 15, wherein the reactor is a fluid bed reactor that rotates about a substantially horizontal reactor axis; and the reactor has a reaction chamber volume of from 20 to 2,000 liters. ### Claim 20 (depends on 15) A method as defined in claim 15, wherein reaction of the CO2 with the metal oxide or metal produces a mineral carbonate. ### Claim 21 (depends on 15) A method as defined in claim 15, wherein the metal or metal oxide includes a metal from a group consisting of calcium, magnesium, aluminum, sodium, cadmium, manganese, lead, nickel, chromium, uranium, magnesium, beryllium and barium. ### Claim 22 (depends on 15) A method as described in claim 15, wherein energy produced by the reaction is used to generate power or provide heat. ### Claim 23 A method for treating a carbon-containing waste material, comprising: supporting simultaneous oxidation of the waste material and conversion to CO2 in a reaction chamber of a fluid bed reactor that rotates about a substantially horizontal axis; simultaneously with said oxidation and conversion, inputting a metal oxide or metal to the reaction chamber to convert the CO2 to a mineral product; capturing exhaust gases from the reaction chamber; and returning at least a portion of the captured exhaust gases to the reaction chamber; and maintaining a desired pressure within the fluid bed reactor. ### Claim 24 (depends on 23) A method as defined in claim 23, further comprising: inputting fuel to the fluid bed reactor; and inputting a reaction gas or vapor to the reactor. ### Claim 25 (depends on 23) A method as defined in claim 23, wherein the fuel and the reaction gases input to the reactor generate a reaction temperature of at least about 300° C. and less than about 900° C. ### Claim 26 (depends on 23) A method as defined in claim 23, wherein reaction of the CO2 with the metal oxide or metal produces a mineral carbonate. ### Claim 27 (depends on 23) A method as defined in claim 23, wherein the metal or metal oxide includes a metal from a group consisting of calcium, magnesium, aluminum, sodium, cadmium, manganese, lead, nickel, chromium, uranium, magnesium, beryllium and barium. ### Claim 28 (depends on 23) A method as described in claim 23, wherein energy produced by the reaction is used to generate power or provide heat. ### Claim 29 A method for treating a carbon-containing waste material to generate power or provide heat, comprising: supporting simultaneous oxidation of the waste material and conversion to CO2 in a reaction chamber of a reactor; simultaneously with said oxidation and conversion, inputting a metal oxide or metal to the reaction chamber to convert the CO2 to a mineral carbonate; inputting a reaction gas or vapor to the reaction chamber; capturing exhaust gases from the reaction chamber and returning at least a portion of the exhaust gases to the reaction chamber; and maintaining a desired pressure within the reaction chamber. ### Claim 30 (depends on 29) A method as defined in claim 29, wherein the fuel and the reaction gases input to the reactor generate a reaction temperature of at least about 300° C. and less than about 900° C. ### Claim 31 (depends on 29) A method as defined in claim 29, further comprising: converting condensable vapors in the captured exhaust gases to a condensate, and returning at least some of the condensate to the reactor. ### Claim 32 (depends on 29) A method as defined in claim 29, wherein the reactor is a fluid bed reactor that rotates about a substantially horizontal reactor axis. ### Claim 33 (depends on 29) A method as defined in claim 29, wherein the metal or metal oxide includes a metal from a group consisting of calcium, magnesium, aluminum, sodium, cadmium, manganese, lead, nickel, chromium, uranium, magnesium, beryllium and barium.