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首页> 外文期刊>Applied thermal engineering: Design, processes, equipment, economics >Sodium vapor capture by coal ash during sodium-rich coal combustion
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Sodium vapor capture by coal ash during sodium-rich coal combustion

机译：富含钠煤燃烧过程中的煤灰蒸汽捕获钠蒸气

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摘要

In this study, firstly, the release of sodium from coal during coal combustion was proved. Then, the capacity of sodium capture of the sodium-rich coal ash and the crystalline phase of the coal ash after sodium capture were investigated. The results showed that the content of sodium released from coal increased with the increasing combustion temperature. The sodium content of Wucaiwan coal ash prepared at 900 degrees C (WCW-900) is saturated. The WCW-900 did not capture sodium in the flue gas, while Hami coal ash prepared at 900 degrees C (HM-900) and PS coal ash prepared at 900 degrees C (PS-900) could capture sodium effectively. With the increasing sodium capture temperature, the amount of the sodium captured by HM-900 decreased, but that of PS-900 increased and the growth rate of the amount of the sodium captured of PS-900 increased. In the sodium capture temperature range from 810 degrees C to 1000 degrees C, the amount of sodium captured by HM-900 is higher than that of PS-900, which is higher than WCW-900. The sodium capture and sodium release existed in the sodium capture process simultaneously. The sodium capture is caused by reaction between the vaporized NaCI and the minerals in the coal ash and the physical adsorption.
机译：在这项研究中，首先，证明了煤燃烧期间的煤钠的释放。然后，研究了钠捕获后钠煤灰的钠煤灰和煤灰结晶相的能力。结果表明，随着燃烧温度的增加，煤中释放的钠含量增加。在900摄氏度（WCW-900）上制备的武装湾煤灰的钠含量饱和。 WCW-900未在烟道气中捕获钠，而在900摄氏度（HM-900）和PS煤灰中制备的哈密煤灰和900摄氏度（PS-900）可以有效地捕获钠。随着钠捕获温度的增加，HM-900捕获的钠的量减少，但PS-900的增加量增加，PS-900捕获的钠量的生长速率增加。在钠捕获温度范围为810℃至1000℃的培养温度范围内，HM-900捕获的钠的量高于PS-900的钠，其高于WCW-900。钠捕获和钠释放同时存在于钠捕获过程中。钠捕获是由蒸发的NaCl和煤灰中的矿物质与物理吸附之间的反应引起的。

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