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Title: Methods and systems for utilizing carbide lime or slag

Abstract

Provided herein are methods comprising a) treating a slag solid or carbide lime suspension with an ammonium salt in water to produce an aqueous solution comprising calcium salt, ammonium salt, and solids; b) contacting the aqueous solution with carbon dioxide from an industrial process under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant aqueous solution wherein the precipitation material and the supernatant aqueous solution comprise residual ammonium salt; and c) removing and optionally recovering ammonia and/or ammonium salt using one or more steps of (i) recovering a gas exhaust stream comprising ammonia during the treating and/or the contacting step; (ii) recovering the residual ammonium salt from the supernatant aqueous solution; and (iii) removing and optionally recovering the residual ammonium salt from the precipitation material.

Inventors:
; ; ; ; ;
Publication Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1423456
Patent Number(s):
9,902,652
Assignee:
CALERA CORPORATION (Moss Landing, CA) NETL
DOE Contract Number:  
FE0002472
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Apr 23
Country of Publication:
United States
Language:
English

Citation Formats

Devenney, Martin, Fernandez, Miguel, Chen, Irvin, Calas, Guillaume, Weiss, Michael Joseph, and Tester, Chantel Cabrera. Methods and systems for utilizing carbide lime or slag. United States: N. p., 2018. Web.
Devenney, Martin, Fernandez, Miguel, Chen, Irvin, Calas, Guillaume, Weiss, Michael Joseph, & Tester, Chantel Cabrera. Methods and systems for utilizing carbide lime or slag. United States.
Devenney, Martin, Fernandez, Miguel, Chen, Irvin, Calas, Guillaume, Weiss, Michael Joseph, and Tester, Chantel Cabrera. Tue . "Methods and systems for utilizing carbide lime or slag". United States. doi:. https://www.osti.gov/servlets/purl/1423456.
@article{osti_1423456,
title = {Methods and systems for utilizing carbide lime or slag},
author = {Devenney, Martin and Fernandez, Miguel and Chen, Irvin and Calas, Guillaume and Weiss, Michael Joseph and Tester, Chantel Cabrera},
abstractNote = {Provided herein are methods comprising a) treating a slag solid or carbide lime suspension with an ammonium salt in water to produce an aqueous solution comprising calcium salt, ammonium salt, and solids; b) contacting the aqueous solution with carbon dioxide from an industrial process under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant aqueous solution wherein the precipitation material and the supernatant aqueous solution comprise residual ammonium salt; and c) removing and optionally recovering ammonia and/or ammonium salt using one or more steps of (i) recovering a gas exhaust stream comprising ammonia during the treating and/or the contacting step; (ii) recovering the residual ammonium salt from the supernatant aqueous solution; and (iii) removing and optionally recovering the residual ammonium salt from the precipitation material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 27 00:00:00 EST 2018},
month = {Tue Feb 27 00:00:00 EST 2018}
}

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