Method for sulfur removal from coal fly ash
Abstract
A method of reducing sulfur concentration in fly ash, flue gas desulfurization (FGD) ash, and mixtures thereof by contacting the fly ash, FGD ash, or mixtures thereof with an aqueous acidic solution, for a time, at a temperature, and at a liquid-to-solid ratio wherein the sulfur concentration within the fly ash, FGD ash, or mixture thereof is reduced to no more than 5 wt % SO.sub.3 based on the total weight of dry fly ash, FGD ash, or mixture thereof so treated.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1987210
- Patent Number(s):
- 11597683
- Application Number:
- 16/871,508
- Assignee:
- Wisconsin Alumni Research Foundation (Madison, WI)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- FE0031705
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 05/11/2020
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Wang, Bu, and Ragipani, Raghavendra. Method for sulfur removal from coal fly ash. United States: N. p., 2023.
Web.
Wang, Bu, & Ragipani, Raghavendra. Method for sulfur removal from coal fly ash. United States.
Wang, Bu, and Ragipani, Raghavendra. Tue .
"Method for sulfur removal from coal fly ash". United States. https://www.osti.gov/servlets/purl/1987210.
@article{osti_1987210,
title = {Method for sulfur removal from coal fly ash},
author = {Wang, Bu and Ragipani, Raghavendra},
abstractNote = {A method of reducing sulfur concentration in fly ash, flue gas desulfurization (FGD) ash, and mixtures thereof by contacting the fly ash, FGD ash, or mixtures thereof with an aqueous acidic solution, for a time, at a temperature, and at a liquid-to-solid ratio wherein the sulfur concentration within the fly ash, FGD ash, or mixture thereof is reduced to no more than 5 wt % SO.sub.3 based on the total weight of dry fly ash, FGD ash, or mixture thereof so treated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {3}
}
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