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US 12,296,384 B1Granted
Chemical looping carrier compositions, binders, and related methods
OwnerSrivats Srinivasachar, Aaron Koeniginventors
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Abstract
A composition for binding metal oxides, a metal oxide pellet produced with the binder and metal oxide, and methods for producing the metal oxide pellets. The binder composition includes a pelletizing agent comprising at least one of a cement, a bitumen, and a polymer and a sinter enhancer comprising at least one of a metal sulfide, a metal chloride, and a metal nitrate.
Claims10
A method of forming a metal oxide-based looping material comprising the steps of:
- A) mixing metal oxides of at least one of the metals Fe, Mn, Cu, Ni, Co, Mg, Ca, Sr and a thermosetting binder with a cure temperature of at least 700° C. comprising about 5-30% by weight sinter enhancer and about 40 to 95% by weight of a pelletizing agent, to form a mixture of about 5% to 30% by weight binder on a dry basis;
- B) agglomerating the mixture from step A to form metal oxide-based looping material precursor pellets;
- and
- C) performing heat treatment on the precursor pellets from step B by exposing the pellets to oxidative conditions of no more than 1000° C. and for a time period such that the metal oxide-based looping material is at least 80 percent oxidized.
1 more element
A method of forming a metal oxide-based looping material comprising the steps of:
- A) mixing attrited fines of a looping carrier material formed from the oxidation of metal oxide-based looping material precursor pellets comprising metal oxides of at least one of the metals Fe, Mn, Cu, Ni, Co, Mg, Ca, Sr, with water and a sinter enhancer comprising at least one of a metal sulfide, a metal chloride, and a metal nitrate;
- B) agglomerating the mixture from step A to form metal oxide-based looping material precursor pellets;
- and
- C) exposing the precursor pellets to oxidative conditions of no more than 1000° C. and for a time period such that the metal oxide-based looping material is at least 80 percent oxidized.
1 more element
Dependencies are inferred from the claim text.