Patent ID: 9719417
Date: 2017-08-01
CPC Classifications: B01D,C01B,C01G,C01P,F01K,F02C,F05D,Y02C,Y02E,Y02P

Claim:
1. A system for sequestering carbon dioxide, comprising: a carbonation reactor having a port for receiving a hot pressurized gaseous stream of CO 2 and N 2 , wherein the carbonation reactor comprises a reaction mixture comprising (i) magnetite and iron, (ii) wustite, or (iii) hematite and iron, wherein the reaction mixture reacts with the hot pressurized gaseous stream received through the port to produce producing siderite and an unreacted mixture, the unreacted mixture selected from the group consisting of magnetite and iron, wustite, and hematite and iron; a magnetic separator coupled to the carbonation reactor, the magnetic separator receiving the siderite and the unreacted mixture from the carbonation reactor and separating the siderite and- from the unreacted mixture; a calciner, the calciner receiving the siderite from the magnetic separator and decomposing the siderite to produce produces magnetite or hematite, and CO2.