CIESC Journal ›› 2023, Vol. 74 ›› Issue (8): 3522-3532.DOI: 10.11949/0438-1157.20230513
• Energy and environmental engineering • Previous Articles Next Articles
Jintong LI(), Shun QIU, Wenshou SUN()
Received:
2023-05-29
Revised:
2023-07-31
Online:
2023-10-18
Published:
2023-08-25
Contact:
Wenshou SUN
通讯作者:
孙文寿
作者简介:
李锦潼(1998—),男,硕士研究生,2632950395@qq.com
基金资助:
CLC Number:
Jintong LI, Shun QIU, Wenshou SUN. Oxalic acid and UV enhanced arsenic leaching from coal in flue gas desulfurization by coal slurry[J]. CIESC Journal, 2023, 74(8): 3522-3532.
李锦潼, 邱顺, 孙文寿. 煤浆法烟气脱硫中草酸和紫外线强化煤砷浸出过程[J]. 化工学报, 2023, 74(8): 3522-3532.
Fig.1 Schematic diagram of the experimental apparatus1—gas cylinder; 2—switch valve; 3—pressure reducing valve; 4—pressure maintaining valve; 5—rotor flow meter; 6—gas mixing bottle; 7—soap film flow meter; 8—inclined tube manometer; 9—agitator; 10—ultraviolet lamp; 11—thermometer; 12—reactor; 13—heating jacket; 14—water cooler; 15—electronic soap film flowmeter; 16—absorption vessel
Fig.7 Variation of 1-(1-F2)1/3 with time (a) and variation of 1-3(1-F2)2/3+2(1-F2)with time (b) during 1.0 mmol/L oxalic acid enhanced process under UV irradiation
煤样 | 组分 | 结合能/ eV | 半峰宽/ eV | 积分面积 | 面积 占比/% |
---|---|---|---|---|---|
原煤样 | 黄铁矿铁 | 707.96 | 2.00 | 1016.03 | 34.16 |
Fe2+ | 710.70 | 2.00 | 1269.06 | 42.66 | |
Fe3+ | 712.78 | 2.00 | 689.56 | 23.18 | |
浸出后煤样 | 黄铁矿铁 | 707.01 | 2.00 | 219.83 | 20.70 |
Fe2+ | 710.82 | 2.00 | 446.60 | 42.06 | |
Fe3+ | 713.07 | 2.00 | 395.30 | 37.24 | |
原煤样 | As(Ⅲ) | 44.04 | 1.00 | 87.44 | 70.94 |
As(Ⅴ) | 45.63 | 1.00 | 35.82 | 29.06 | |
浸出后煤样 | As(Ⅲ) | 44.21 | 1.00 | 17.57 | 26.37 |
As(Ⅴ) | 45.72 | 1.00 | 49.07 | 73.63 | |
原煤样 | 黄铁矿硫 | 162.97 | 1.70 | 309.19 | 30.59 |
有机硫 | 165.79 | 1.70 | 149.74 | 14.82 | |
硫酸盐硫 | 168.29 | 1.70 | 551.68 | 54.59 | |
浸出后煤样 | 黄铁矿硫 | 162.22 | 1.70 | 57.85 | 7.89 |
有机硫 | 164.80 | 1.70 | 62.66 | 8.54 | |
硫酸盐硫 | 168.73 | 1.70 | 612.92 | 83.57 |
Table 1 XPS parameters of raw coal and coal residue
煤样 | 组分 | 结合能/ eV | 半峰宽/ eV | 积分面积 | 面积 占比/% |
---|---|---|---|---|---|
原煤样 | 黄铁矿铁 | 707.96 | 2.00 | 1016.03 | 34.16 |
Fe2+ | 710.70 | 2.00 | 1269.06 | 42.66 | |
Fe3+ | 712.78 | 2.00 | 689.56 | 23.18 | |
浸出后煤样 | 黄铁矿铁 | 707.01 | 2.00 | 219.83 | 20.70 |
Fe2+ | 710.82 | 2.00 | 446.60 | 42.06 | |
Fe3+ | 713.07 | 2.00 | 395.30 | 37.24 | |
原煤样 | As(Ⅲ) | 44.04 | 1.00 | 87.44 | 70.94 |
As(Ⅴ) | 45.63 | 1.00 | 35.82 | 29.06 | |
浸出后煤样 | As(Ⅲ) | 44.21 | 1.00 | 17.57 | 26.37 |
As(Ⅴ) | 45.72 | 1.00 | 49.07 | 73.63 | |
原煤样 | 黄铁矿硫 | 162.97 | 1.70 | 309.19 | 30.59 |
有机硫 | 165.79 | 1.70 | 149.74 | 14.82 | |
硫酸盐硫 | 168.29 | 1.70 | 551.68 | 54.59 | |
浸出后煤样 | 黄铁矿硫 | 162.22 | 1.70 | 57.85 | 7.89 |
有机硫 | 164.80 | 1.70 | 62.66 | 8.54 | |
硫酸盐硫 | 168.73 | 1.70 | 612.92 | 83.57 |
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