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US 11,312,636 B2Granted
Processes and systems for regenerating alkali process streams
AssigneeGraymont Western US Inc.
InventorsShiaw Tseng, Jared Leikam, Carl Paystrup
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Abstract
Processes for regenerating alkali process streams are disclosed herein, including streams containing sodium hydroxide, magnesium hydroxide, and combinations thereof. Systems for regenerating alkali process streams are disclosed herein, including streams containing sodium hydroxide, magnesium hydroxide, and combinations thereof.
Claims10
A system for regenerating an alkali process stream, comprising:
- a first separator configured to separate a supply stream from one or more supply vessels into at least a first stream;
- a carbonate supply configured to supply carbonates;
- a mixer downstream of the first separator and the carbonate supply, the mixer configured to receive the carbonates and the first stream and provide a mixed solution comprising calcium carbonate and sodium hydroxide;
- and
- a second separator downstream of the mixer, the second separator configured to (a) remove at least a portion of the calcium carbonate from the mixed solution, (b) recycle at least a portion of the sodium hydroxide to at least one of the one or more supply vessels, or (c) remove at least a portion of the calcium carbonate from the mixed solution, and recycle at least a portion of the sodium hydroxide to at least one of the one or more supply vessels.
2 more elements
Dependencies are inferred from the claim text.