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Optimizing Synergy between Phosphogypsum Disposal and Cement Plant CO2 Capture by the Calcium Looping Process
Release time:2019-09-12  Hits:

Indexed by: Journal paper

First Author: Jian Sun

Correspondence Author: Wenqiang Liu

Journal: Energy & Fuels

Included Journals: EI、SCI

Affiliation of Author(s): Huazhong University of Science and Technology

Discipline: Engineering

First-Level Discipline: Power Engineering and Engineering Thermophysics

Document Type: J

Volume: 30

Issue: 2

Page Number: 1256-1265

Date of Publication: 2016-01-01

Abstract: In this work, a novel joint processing route that integrates the disposal of phosphogypsum waste with CO2 emissions reduction in a cement plant was proposed. The route mainly includes three parts: direct aqueous carbonation of phosphogypsum, use of the obtained carbonation product for CO2 capture in the calcium looping process (CLP), and manufacture of cement clinker using the spent CaO-based sorbent. The direct use of the CO2 derived from cement plant flue gas (20 vol % CO2) is able to convert 94.5% of CaSO4 in the phosphogypsum into CaCO3. However, a long time of 90 min is required for the co