Invention Grant
- Patent Title: Methods and systems for forming vaterite from calcined limestone using electric kiln
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Application No.: US17363537Application Date: 2021-06-30
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Publication No.: US11377363B2Publication Date: 2022-07-05
- Inventor: Ryan J Gilliam , Michael Joseph Weiss
- Applicant: Arelac, Inc.
- Applicant Address: US CA San Jose
- Assignee: Arelac, Inc.
- Current Assignee: Arelac, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Arelac, Inc.
- Agent Vandana Bansal
- Main IPC: C01F11/18
- IPC: C01F11/18 ; C01F11/06

Abstract:
Provided herein are zero carbon dioxide (CO2) emission processes and systems to carry out the processes, comprising a) calcining limestone in a cement plant in an electric kiln to form a mixture comprising calcium oxide and a first gaseous stream comprising clean carbon dioxide, wherein the clean carbon dioxide comprises no gaseous or non-gaseous components from combustion of fuel; b) treating the mixture comprising calcium oxide with a N-containing salt solution under one or more dissolution conditions to produce a first aqueous solution comprising calcium salt; and c) contacting the first aqueous solution with the first gaseous stream comprising clean carbon dioxide under one or more precipitation conditions to produce a precipitation material comprising vaterite, aragonite, calcite, or combinations thereof.
Public/Granted literature
- US20210403335A1 METHODS AND SYSTEMS FOR FORMING VATERITE FROM CALCINED LIMESTONE USING ELECTRIC KILN Public/Granted day:2021-12-30
Information query
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