Methods for operating solar-thermochemical processes

Patent metadata

Field	Value
Publication number	US-10801756-B2
Application number	US-201815981287-A
Country	US
Kind code	B2
Filing date	May 16, 2018
Priority date	Dec 8, 2014
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

Methods for controlling or operating solar thermochemical reactions process that maximize the two-step thermochemical energy cycle efficiency by a combination of pressure and temperature swing are disclosed.

First claim

What is claimed is:

1. A method of operating a thermochemical reactor system comprising:
setting a thermal reduction temperature, pressure and oxide mass flow for an oxide in the thermochemical reactor;
setting an oxidation temperature and oxygen partial pressure in the thermochemical reactor system for a selected feed stream; and
operating the thermochemical reactor system with the set thermal reduction temperature, pressure and oxide mass flow for an oxide in the thermochemical reactor and the set oxidation temperature and oxygen partial pressure in the thermochemical reactor system;
where an amount of heat to satisfy the oxidation temperature is equal to an amount of heat provided by the oxide mass flow and the thermal reduction temperature.

2. The method of claim 1 , wherein the feed stream is carbon dioxide.

3. The method of claim 1 , wherein the feed stream is water.

4. The method of claim 3 , wherein the oxidation temperature is red is equal to a steam generation for water at the set oxygen partial pressure.

Assignees

• Nat Tech & Eng Solutions Sandia Llc
• National Tech & Engineering Of Sandia Llc

Inventors

• Ermanoski Ivan
• Miller James E

Classifications

• F24S90/00 Primary

  Solar heat systems not otherwise provided for · CPC title

• F24S50/40

  responsive to temperature · CPC title

• C01B32/40

  Carbon monoxide · CPC title

• C01B32/50

  Carbon dioxide · CPC title

• C01B3/063

  Cyclic methods · CPC title