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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:
; ; ; ; ;
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1423456
Patent Number(s):
9902652
Assignee:
CALERA CORPORATION (Moss Landing, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
FE0002472
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Apr 23
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

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. 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 = {2018},
month = {2}
}

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Works referenced in this record:

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