Study on the Sodium Capture Performance of Sodium Adsorbent for NaCl Vapor 固钠剂对NaCl蒸气的钠捕获性能研究

Huang，Dongdong1; Zhang，Shouyu1; Jiang，Fenghao2; Chang，Ming1; Zhang，Hua3; Wu，Yuxin4; Lyu，Junfu4; Hu，Nan5

2021-11-05

10.13334/j.0258-8013.pcsee.202374

中国电机工程学报   影响因子和分区

0258-8013

Zhundong coal of China has important development and utilization value. However, because of the high sodium content of Zhundong coal, a large amount of gaseous sodium-containing compounds produced during its combustion process of Zhundong coal condenses onto the heating surface, and results in serious fouling and slagging problems. The content of the gaseous sodium-containing compounds in the flue gas can be effectively reduced by the sodium adsorbent. The three sodium adsorbents (kaolinite, SiO and bentonite) were selected as the raw material for the sodium-capturing experiment. NaCl was used as sodium vapor source, and sodium-capturing experiment device was used to conduct sodium-capturing experiment under the reaction temperature range of 810~1000℃. Thermogravimetric analysis (TG) was used to study the thermal stability of the samples. The main crystalline compounds were identified by X-ray diffraction analysis (XRD). The sodium content of the sample before and after the sodium-capturing experiment was determined by inductively coupled plasma atomic emission spectrometry (ICP-OES). The results found that the amount of the sodium captured by the adsorbents was in the order of bentonite > kaolin > SiO, between 810°C and 1000℃. The sodium-capturing amount of bentonite gradually increased with the increase of reaction temperature. As the reaction temperature increased from 810℃ to 1000℃, the sodium-capturing amount of kaolin changed a little as the result of the increasing chemical reaction rate, and the decreasing number of active sited on the surface of kaolin. But the sodium-capturing performance increased significantly when the temperature increased to 1000℃. SiO, which could fix a certain NaCl vapor through physical adsorption and chemical reaction at 900℃, showed the decreasing performance when the temperature above 900℃.

Adsorbent Combustion Fouling and slagging Gaseous sodium compounds High-sodium coal Sodium capture

EI

中文

其他

20214811226734

Atomic emission spectroscopy ; Bentonite ; Gas adsorption ; Inductively coupled plasma ; Kaolin ; Kaolinite ; Silica ; Sodium chloride ; Sodium sulfate ; Thermodynamic stability ; Thermogravimetric analysis ; X ray powder diffraction

Minerals:482.2 ; Solid Fuels:524 ; Thermodynamics:641.1 ; Chemistry:801 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Plasma Physics:932.3

2-s2.0-85119611976

Scopus

1.School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,Yangpu District,200093,China
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518000,China
3.Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,University of Shanghai for Science and Technology,Shanghai,Yangpu District,200093,China
4.Department of Thermal Engineering,Tsinghua University,Beijing,Haidian District,100084,China
5.Changchun Institute of Technology,Jilin,130012,China

Huang，Dongdong,Zhang，Shouyu,Jiang，Fenghao,等. Study on the Sodium Capture Performance of Sodium Adsorbent for NaCl Vapor 固钠剂对NaCl蒸气的钠捕获性能研究[J]. 中国电机工程学报,2021,41(21):7403-7409.

Huang，Dongdong.,Zhang，Shouyu.,Jiang，Fenghao.,Chang，Ming.,Zhang，Hua.,...&Hu，Nan.(2021).Study on the Sodium Capture Performance of Sodium Adsorbent for NaCl Vapor 固钠剂对NaCl蒸气的钠捕获性能研究.中国电机工程学报,41(21),7403-7409.

Huang，Dongdong,et al."Study on the Sodium Capture Performance of Sodium Adsorbent for NaCl Vapor 固钠剂对NaCl蒸气的钠捕获性能研究".中国电机工程学报 41.21(2021):7403-7409.