Advanced mineral carbonation: An approach to accelerate CO2 sequestration using steel production wastes and integrated fluidized bed reactor

Document Type

Conference Proceeding

Source of Publication

Springer Series in Geomechanics and Geoengineering

Publication Date

1-1-2019

Abstract

© Springer Nature Switzerland AG 2019. Industrial pollution is the major source of global warming through emissions of greenhouse gases (GHG’s) like CO2, CH4, and NO2, causing noticeable increasing in the world’s temperature. Mineral carbonation is a method of carbon capture and storage (CCS) through which CO2 is sequestered with advantage of permanent sequestration and no need for post-storage surveillance and monitoring through stabilizing the reactive mineral wastes released from metal industries. This paper applied a simple and an inexpensive hydration process as a pre-treatment step for the carbonation of Ladle Furnace (LF) slag, one of the steel production by-products in UAE, followed by direct gas-solid carbonation in a new designed integrated fluidized bed reactor (FBR). About (10–15)% by weight of produced steel, alkaline solid residues were generated, based on the characteristics of the manufacturing process. The integrated FBR was designed to control the flow rate up to 50 l/min with step accuracy of 0.1 l/min, and temperature up to 200 °C through a double jacket electrical heater. Operating pressure can be adjusted up to 6 bars. All parameters are monitored by SCADA system. A mixture gas of 10% CO2, balanced with air, was used to perform the carbonation process and evaluation the carbonation efficiency as well. A gas analyzer installed at the outlet of FBR was used to measure unreacted CO2 gas after leaving the reactor, and calculate the amount of CO2 captured accordingly. Results of analytical techniques like TGA and XRD emphasized the sequestration of CO2 and show a high efficient carbonation process.

ISSN

1866-8755

Publisher

Springer Verlag

Issue

217729

First Page

387

Last Page

393

Disciplines

Physical Sciences and Mathematics

Keywords

Carbon capture, Carbon dioxide, Carbonation, Chemical reactors, Fluidized bed furnaces, Fluidized bed process, Global warming, Greenhouse gases, Industrial emissions, Minerals, Petroleum reservoir evaluation, SCADA systems, Slags, Steelmaking, Supersaturation, Alkaline solid residues, Carbon capture and storages (CCS), Fluidized bed reactors, Gas-solid carbonations, Industrial pollution, Manufacturing process, Sequestration of CO2, Surveillance and monitoring, Fluidized beds, carbon dioxide, carbon sequestration, equipment, hydration, industrial waste, mineral, reaction kinetics, slag, steel, United Arab Emirates

Scopus ID

85053245119

Indexed in Scopus

yes

Open Access

no

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