DOI: 10.1016/j.jcou.2016.11.012
Scopus记录号: 2-s2.0-85003881270
论文题名: Process simulation of mineral carbonation of phosphogypsum with ammonia under increased CO2 pressure
作者: Bao W. ; Zhao H. ; Li H. ; Li S. ; Lin W.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 17 起始页码: 125
结束页码: 136
语种: 英语
英文关键词: Ammonia
; Carbon dioxide
; Mineral carbonation
; Phosphogypsum
; Process simulation
Scopus关键词: Ammonia
; Carbon
; Carbon dioxide
; Computer software
; Energy utilization
; Fertilizers
; Gypsum
; Minerals
; Reaction kinetics
; Reaction rates
; Sensitivity analysis
; Water absorption
; Aspen plus process simulations
; Fertilizer production
; Large-scale applications
; Low energy consumption
; Mineral carbonation
; Phosphogypsum
; Process simulations
; Value-added chemicals
; Carbonation
英文摘要: The mineral carbonation of phosphogypsum offers many advantages in sequestering CO2, solving the pollution problem of phosphogypsum stacking, and manufacturing high value-added chemical products with low energy consumption and cost. Using the Aspen Plus process simulation software, this work simulates a novel process for the mineral carbonation of phosphogypsum with ammonia under increased CO2 pressure. This process is divided into five sections, namely, pre-carbonation, enhanced carbonation, flash separation, gas phase absorption, and (NH4)2SO4 fertilizer production. With its large-scale application, this new process allows the sensitivity analysis of many operation conditions, identifies the optimal conditions for reducing the ammonia and energy consumption of (NH4)2SO4 fertilizer production, and achieves a high carbonation conversion with a fast reaction rate. The optimal conditions (6 bar enhanced carbonation pressure, 1 bar flash pressure, 38 °C ammonia absorption solution temperature, 1.05 ammonia excess ratio, 1.024 CO2 excess ratio, and 0.94 mass ratio of water to gypsum) yield the highest carbonation conversion, ammonia utilization ratio, and enhanced carbonation temperature of 99.9%, 95.2%, and 138.5 °C, respectively, all of which can help achieve a fast carbonation reaction rate. © 2016 Elsevier Ltd. All rights reserved. 资助项目: National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52830
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Bao W.,Zhao H.,Li H.,et al. Process simulation of mineral carbonation of phosphogypsum with ammonia under increased CO2 pressure[J]. Journal of CO2 Utilization,2017-01-01,17