| CPC C25B 3/26 (2021.01) [C01B 32/50 (2017.08); C01F 11/04 (2013.01); C25B 1/23 (2021.01); C01B 2203/0272 (2013.01)] | 19 Claims |
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1. A method of thermally decomposing a decomposable carbonate-containing material and recycling waste heat from thermal decomposition, comprising:
directing solar radiation reflected from a plurality of reflective surfaces to a receiver that contains the decomposable carbonate-containing material;
wherein the step of directing the solar radiation comprises positioning at least some of the reflective surfaces such that the reflected solar radiation preferentially heats (i) a first portion of the decomposable carbonate-containing material in the receiver relative to a second portion of the decomposable carbonate-containing material in the receiver and/or (ii) a heat transfer medium in the receiver;
wherein at least some of the decomposable carbonate-containing material is heated in the receiver by the reflected solar radiation and/or the heat transfer medium to a temperature at which the decomposable carbonate-containing material releases carbon dioxide gas and forms a decomposed material; and
wherein the decomposed material and/or the carbon dioxide gas contain the waste heat; and
recovering the waste heat with a heat exchange circuit;
wherein the heat exchange circuit recycles the waste heat by:
a. preheating the decomposable carbonate-containing material prior to thermal decomposition; and/or
b. applying the waste heat to a chemical reaction in which the carbon dioxide gas is reduced to fuel.
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