Inorganic Chemicals Industry ›› 2023, Vol. 55 ›› Issue (6): 85-91.doi: 10.19964/j.issn.1006-4990.2022-0546
• Environment·Health·Safety • Previous Articles Next Articles
ZHANG Lei1(), LI Meng1,2, XIANG Wenguo3, HU Jun3,4(), CHEN Shiyi3, DUAN Lunbo3
Received:
2022-09-09
Online:
2023-06-10
Published:
2023-06-14
CLC Number:
ZHANG Lei, LI Meng, XIANG Wenguo, HU Jun, CHEN Shiyi, DUAN Lunbo. Feasibility analysis of calcination and decomposition process of phosphogypsum in circulating fluidized bed[J]. Inorganic Chemicals Industry, 2023, 55(6): 85-91.
Table 3
Details of experiment condition"
工况 | 磷石膏/ g | 煤/ g | 反应气 | 温度/ ℃ | 时长/ min |
---|---|---|---|---|---|
1 | 1 | — | 5.5 mL/min CO,177 mL/min N2 | 1 100 | 30 |
2 | 1 | — | 5.5 mL/min CO,177 mL/min N2 | 1 100 | 60 |
3 | 1 | — | 11 mL/min CO,355 mL/min N2 | 1 100 | 30 |
4 | 1 | — | 16.5 mL/min CO,533 mL/min N2 | 1 100 | 30 |
5 | 1 | 0.1 | 90 mL/min N2 | 1 100 | 30 |
6 | 1 | 0.25 | 90 mL/min N2 | 1 100 | 30 |
7 | 1 | 0.25 | 90 mL/min CO2 | 1 100 | 30 |
8 | 1 | 0.25 | 4 mL/min O2,396 mL/min CO2 | 1 100 | 30 |
9 | 1 | 0.25 | 4 mL/min O2,396 mL/min CO2 | 1 000 | 30 |
10 | 1 | 0.25 | 4 mL/min O2,396 mL/min CO2 | 1 050 | 30 |
11 | 1 | 0.25 | 4 mL/min O2,396 mL/min CO2 | 1 100 | 20 |
12 | 1 | 0.25 | 4 mL/min O2,396 mL/min CO2 | 1 100 | 40 |
13 | 1 | 0.25 | 4 mL/min O2,396 mL/min N2 | 1 100 | 30 |
14 | 1 | 0.2 | 4 mL/min O2,396 mL/min CO2 | 1 100 | 30 |
15 | 1 | 0.222 | 4 mL/min O2,396 mL/min CO2 | 1 100 | 30 |
16 | 1 | 0.286 | 4 mL/min O2,396 mL/min CO2 | 1 100 | 30 |
Table 4
Thermodynamic calculation of main flows results of phosphogypsum coal calcination process"
工况条件 | 气化介质 | 磷石 膏量/ (t∙d-1) | 反应 温度/ ℃ | 生成 烟气量/ (m3∙s-1) | 煤耗量/ (t∙d-1) | 氧耗量/ (t∙d-1) | 反应器 出口 φ(SO2)/ %(干气) | 反应器 出口 φ(CO)/ % | 反应器 出口 φ(H2)/ % | 反应器 出口 φ(CO2)/ % | 反应器 出口 φ(H2O)/ % | 反应器 出口 φ(O2)/ % |
---|---|---|---|---|---|---|---|---|---|---|---|---|
未干燥含结晶水 | 50% O2+50% CO2 | 1 000 | 1 100 | 60.12 | 241.03 | 412.15 | 15.96 | 1.11 | 0.28 | 56.93 | 29.02 | 0.37 |
干燥脱水 | 50% O2+50% CO2 | 1 000 | 1 100 | 36.37 | 182.11 | 295.01 | 20.49 | 0.71 | 0.05 | 70.02 | 9.03 | 0.45 |
干燥脱水 | 空气 | 1 000 | 1 100 | 84.93 | 227.63 | 8.39 | 0.75 | 0.09 | 19.26 | 4.74 | 0.06 | |
干燥脱水 | 50% O2+50% H2O | 1 000 | 1 100 | 35.03 | 174.36 | 279.32 | 33.17 | 0.59 | 0.33 | 36.61 | 42.00 | 0.47 |
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