高效环保脱硫剂的制备及性能研究

doi:10.19964/j.issn.1006-4990.2021-0321

Abstract

Abstract:

With the upgrading of national environmental protection regulation,the restriction on the emission concentration of sulfur dioxide in flue gas is becoming more and more strict.The desulfurization efficiency of traditional dry desulfurizer is low.Therefore,it is of great significance to improve the desulfurization efficiency of dry desulfurizer.Calcium hydroxide,rare earth metals and alkaline earth metals were used as raw materials to prepare efficient environmental protection desulfurizer.Three kinds of calcium hydroxide（A,B and C） were characterized by X-ray fluorescence spectroscopy（XRF）,thermogravi-metric analysis（TG）,scanning electron microscopy（SEM） and transmission electron microscopy（TEM）.The results showed that the element composition and calcium hydroxide content of the three kinds of calcium hydroxide were similar.The grain size of calcium hydroxide B was larger,and the stacking of hexagonal lamellae on the surface was more orderly and compact.The rare earth metals and alkaline earth metals could promote the desulfurization of calcium hydroxide.The results of desulfu-rization experiment showed that the desulfurization effect of calcium hydroxide B was better.When the mass ratio of calcium hydroxide B,rare earth metals and alkaline earth metals was 95:2:3,the active component had the best catalytic desulfuriza-tion effect.The desulfurization performance of self-made high efficiency and environmental protection desulfurizer was better than that of market products,which had a good market prospect.

Key words: high efficiency and environmental protection, desulfurization, calcium hydroxide

CLC Number:

TQ132.32

SU Shaolong,QU Xiaolong,SUN Yanmin,ZHONG Dule,NAN Jun,HAO Ziquan. Study on preparation and performance of high efficient and environmental friendly desulfurizer[J]. Inorganic Chemicals Industry, 2022, 54(3): 77-81.

Figures/Tables 10

Table 1

Fig.1

Table 2

Fig.2

Fig.3

Fig.4

Fig.5

Table 3

Table 4

Table 5

References 16

[1]	李天喜. 新型催化干法脱硫技术的试验与应用[J]. 河北冶金, 2019,增刊(1):96-99.
[2]	苏清发, 陈永瑞, BOB Jewell, 等. 超细干法脱硫灰在水泥混凝土中的应用研究[J]. 新型建筑材料, 2019, 46(12):1-4,54.
[3]	王俊杰, 李艳玲, 房晶瑞. 水泥窑干法脱硫技术的新突破[J]. 水泥, 2019(8):46-49.
[4]	于斌, 王爱, 孙洪斌, 等. 循环流化床半干法脱硫装置烟道流场模拟优化[J]. 洁净煤技术, 2020, 26(3):75-81.
[5]	朱顺冬, 周冠辰, 古俊飞, 等. 半干法脱硫针刺复合滤料的性能研究[J]. 河南工程学院学报:自然科学版, 2019, 31(2):27-31.
[6]	胡海龙, 胡潘辉. 电石渣制粉在锅炉炉外半干法脱硫中的应用[J]. 大氨肥, 2019, 42(4):287-288.
[7]	LI Y, QI H Y, YOU C F, et al. Kinetic model of CaO/fly ash sorbent for flue gas desulphurization at moderate temperature[J]. Fuel, 2007, 86(5/6):785-792. doi: 10.1016/j.fuel.2006.09.011
[8]	李晨朗, 冀秉强, 宋蔷, 等. 湿法脱硫喷淋除尘过程的数值模拟[J]. 中国电机工程学报, 2019, 39(4):1070-1078.
[9]	马双忱, 别璇, 孙尧, 等. 湿法脱硫烟气水回收技术研究进展[J]. 洁净煤技术, 2019, 25(1):64-70.
[10]	马双忱, 周权, 曹建宗, 等. 湿法脱硫系统动态过程建模与仿真[J]. 化工学报, 2020, 71(8):3741-3751.
[11]	CÓRDOBA P. Status of flue gas desulphurization(FGD) systems from coal-fired power plants:Overview of the physic-chemical con-trol processes of wet limestone FGDs[J]. Fuel, 2015, 144:274-286. doi: 10.1016/j.fuel.2014.12.065
[12]	MEIJ R, WINKEL B T. The emissions and environmental impact of PM10 and trace elements from a modern coal-fired power plant equipped with ESP and wet FGD[J]. Fuel Processing Technology, 2004, 85(6):641-656. doi: 10.1016/j.fuproc.2003.11.012
[13]	肖亚. 石质文物用纳米氢氧化钙粉体制备及其在云冈石窟的应用[D]. 哈尔滨:哈尔滨工业大学, 2012.
[14]	李春花, 王华, 胡建杭, 等. Fe₂O₃强化CaO粉末中温烟气脱硫的研究[J]. 应用化工, 2006, 35(2):92-95.
[15]	张世超, 魏建森, 潘敏子. 单分子层二氧化铈脱硫机理研究[J]. 上海环境科学, 1998, 17(2):30-32.
[16]	路八智, 李燕梅, 魏占鸿, 等. 氧化镁法烟气脱硫特性及运行情况综述[J]. 环境污染与防治, 2018, 40(3):345-348.

氢氧化钙	主要元素组成及含量（以氧化物质量分数计）/%
氢氧化钙	CaO	Na₂O	MgO	Al₂O₃	SiO₂
A	72.1	0.192	0.622	0.649	1.590
B	73.2	0.393	0.623	0.095	0.167
C	72.4	0.592	0.623	0.645	0.184

氢氧化钙	w（失水）/%	w（氢氧化钙）/%	w（氧化钙）/%
A	20.48	84.2	63.72
B	20.70	85.1	64.40
C	20.65	84.9	64.25

温度/ ℃	60 min出口ρ（SO₂）/（mg·Nm^-3）			300 min出口ρ（SO₂）/（mg·Nm^-3）
温度/ ℃	A	B	C	A	B	C
200	500.0	214.3	1 205.2	3 542.8	2 994.3	3 548.6
300	300.0	105.7	1 042.8	2 940.0	2 162.8	3 022.8
400	214.3	5.7	580.0	2 451.0	857.1	2 282.8
500	0.0	0.0	0.0	80.0	2.8	528.6

编号	脱硫剂各组分质量分数/%			脱硫率/ %
编号	氢氧化钙B	稀土金属	碱土金属	脱硫率/ %
1	100	0	0	86.4
2	95	1	4	94.8
3	95	2	3	98.8
4	95	3	2	97.6
5	95	4	1	95.8
6	90	2	8	94.2
7	90	4	6	97.4
8	90	6	4	96.2
9	90	8	2	95.6

脱硫剂	脱硫率/%
北京某厂条形脱硫剂	93.2
山东某厂条形脱硫剂	88.7
自制脱硫剂	98.8

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on preparation and performance of high efficient and environmental friendly desulfurizer

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 10

References 16

Related Articles 15

Metrics

Comments

Recommended 0

[1]	WANG Peixiong, GONG Xiaomei, DING Jiaqi, CAO Hong. Effect of crystal modifier on preparation of α-hemihydrates gypsum from industrial gypsum [J]. Inorganic Chemicals Industry, 2024, 56(4): 112-117.
[2]	YANG Fengling, QIAO Guoxin, YANG Pu, REN Lei, WANG Qiong, WU Haibin, CHENG Fangqin. Research progress and application of α-hemihydrate gypsum preparation from desulfurization gypsum [J]. Inorganic Chemicals Industry, 2024, 56(2): 11-20.
[3]	WANG Yanyu, GU Shouyu, HOU Cuihong, JING Hongquan, GUAN Hongling, ZHANG Hui. Sulfur escape and slag physical phase analysis by carbon thermal reduction melting based on phosphogypsum ingredients [J]. Inorganic Chemicals Industry, 2024, 56(2): 86-94.
[4]	YANG Yue, ZHU Ganyu, ZHANG Jianbo, MENG Ziheng, LIU Xinhui, YANG Jing, YAN Kun, PENG Zonggui, WANG Qiujian, LI Huiquan. Study on preparation of desulfurizer and byproduct gypsum from calcium carbide slag by cyclone separation [J]. Inorganic Chemicals Industry, 2023, 55(5): 78-84.
[5]	JIN Suna, LÜ Ruiliang. Research and application progress of wet flue gas desulfurization wastewater treatment technology [J]. Inorganic Chemicals Industry, 2023, 55(4): 27-37.
[6]	YAO Yong, LI Shizhu, ZHENG Dongchen, ZENG Tinghua, WU Zhichao, YU Chi, LIU Faqian. Study on preparation，evaluation and application of new low-carbon emission nano calcium hydroxide desulfurizer [J]. Inorganic Chemicals Industry, 2023, 55(4): 38-44.
[7]	LIAO Shengde,YANG Yaofeng,LI Yaxin,WU Hao. Study on flotation experiment and mechanism of desulfurization by-product magnesium sulfite using dodecylamine [J]. Inorganic Chemicals Industry, 2023, 55(2): 113-118.
[8]	YANG Fengling,ZHAI Min,REN Lei,ZHANG Yuanyuan,CHENG Fangqin,DONG Hongyu. Influencing factors of crystallization products in wet desulfurization of carbide slag [J]. Inorganic Chemicals Industry, 2023, 55(2): 92-98.
[9]	LIU Jingying, JIA Yangjie, YANG Fengling, REN Lei, LI Pengfei, WANG Fei, CHENG Fangqin. Research progress of zero liquid discharge pretreatment process for flue gas desulfurization wastewater from coal-fired power plants [J]. Inorganic Chemicals Industry, 2023, 55(12): 12-25.
[10]	XIONG Shuang, YAN Jinsheng, ZHOU Zhou, ZHOU Baodi, CHEN Xiaopeng, TONG Zhangfa. Effect of reaction conditions of quicklime digestion on properties of calcium hydroxide [J]. Inorganic Chemicals Industry, 2023, 55(12): 50-58.
[11]	LIU Yue, ZHENG Qiang, XING Jiabin, XING Run, MA Yali, JIA Songyan, LI Xue. Study on process and application of high-performance calcium hydroxide prepared by dry digestion from limestone [J]. Inorganic Chemicals Industry, 2023, 55(10): 42-49.
[12]	ZHANG Zhe,LIAO Mingyu,CHEN Ming,YU Shanshan,ZHOU Kangdi,LI Jiachun,ZHANG Linfeng,WU Huadong,GUO Jia. Application of CeO₂-ZnO/KIT-6 catalyst in photocatalytic adsorption desulfurization [J]. Inorganic Chemicals Industry, 2022, 54(9): 143-149.
[13]	LI Bin,ZANG Jiazhong,YU Haibin,WANG Huan,LI Liqing,CHEN Tiehong. Study on synthesis and oxidative-adsorptive desulfurization performance of hierarchically mesoporous titanium-containing silica [J]. Inorganic Chemicals Industry, 2022, 54(7): 135-140.
[14]	HAO Jianying,HU Tao,CHENG Guanji,GUO Bing. Preparation of high?performance building gypsum by desulfurization gypsum doped with ZnO crystal transformation [J]. Inorganic Chemicals Industry, 2022, 54(6): 96-101.
[15]	HUA Wen,LÜ Ruiliang. Application status and development direction of wet flue gas desulfurization technology [J]. Inorganic Chemicals Industry, 2022, 54(12): 10-18.