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US 12,558,651 B2Granted
Treatment of acid gases using molten alkali metal borates, and associated methods of separation
AssigneeMassachusetts Institute of Technology
InventorsTrevor Alan Hatton, Takuya Harada, Cameron G. Halliday
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Abstract
The removal of acid gases (e.g., non-carbon dioxide acid gases) using sorbents that include salts in molten form, and related systems and methods, are generally described.
Claims10
A system, comprising:
- a sorber comprising:
- a first inlet configured to receive a stream comprising an acid gas,
- a second inlet configured to receive a sorbent,
- a first outlet configured to output a treated gas lean in the acid gas relative to the stream comprising the acid gas, and
- a second outlet configured to output a stream comprising the sorbent loaded with the acid gas;
- a desorber comprising:
- a first inlet configured to receive the sorbent loaded with the acid gas,
- a second inlet configured to receive a sweep gas,
- a first outlet configured to output the sorbent lean in the acid gas relative to the sorbent loaded with the acid gas, and
- a second outlet configured to output a stream rich in the acid gas relative to the sweep gas;
- a liquid-solid separator configured to receive at least a portion of the sorbent lean in the acid gas relative to the sorbent loaded with the acid gas and to output sulfurous solids and liquid sorbent;
- and
- a vessel configured to receive the sulfurous solids and to output aqueous alkali metals;
- wherein the system is configured such that the aqueous alkali metals are merged with the liquid sorbent and transported to the sorber.
11 more elements
A method, comprising:
- transporting an acid gas to a sorber such that the acid gas interacts with a sorbent to produce a stream comprising sorbent loaded with the acid gas;
- transporting the sorbent loaded with the acid gas to a desorber such that the sorbent interacts with a sweep gas to produce a stream comprising the sorbent lean in the acid gas relative to the sorbent loaded with the acid gas;
- transporting a portion of the sorbent lean in the acid gas to a liquid-solid separator to produce a stream comprising sulfurous solids and a stream comprising liquid sorbent;
- and
- transporting the sulfurous solids to a vessel to produce a stream comprising aqueous alkali metals and a stream comprising a sulfurous product.
2 more elements
Dependencies are inferred from the claim text.