煤气化装置洗涤塔塔盘技术改造
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摘要
由于使用高灰分、高灰熔点煤种,极易造成系统水质恶化,进而引起洗涤塔塔盘结垢,导致合成气出洗涤塔过程中带灰、带水、水气比低、合成气流量波动大、温度不稳定等问题,通过对洗涤塔塔盘进行改造,将原来的八层固阀塔盘改为六层塔盘,改造效果明显,延长了装置运行周期,降低了检修频次,取得了明显的经济效益。
Coal with high ash content and high ash melt point is easily to cause water quality deterioration in the system, which leads to scale formation on scrubber trays, and makes the synthetic gas at the outlet of scrubber entrained with ash and water, synthetic gas with lower steam gas ratio, flow fluctuation, and unsteady temperature. A modification of scrubber tray, that is to change the original eight(8) layer fixed valve tray to six(6) layer tray, gained apparent results, prolonging the operation cycle, reducing the maintenance time, and achieving good economic benefit.
Coal with high ash content and high ash melt point is easily to cause water quality deterioration in the system, which leads to scale formation on scrubber trays, and makes the synthetic gas at the outlet of scrubber entrained with ash and water, synthetic gas with lower steam gas ratio, flow fluctuation, and unsteady temperature. A modification of scrubber tray, that is to change the original eight(8) layer fixed valve tray to six(6) layer tray, gained apparent results, prolonging the operation cycle, reducing the maintenance time, and achieving good economic benefit.
引文
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[2]齐亚平,徐延鹏.气化装置合成气洗涤塔的技术改造思路[J].煤炭加工与综合利用,2015(2):77-80.
[3]赵宏.水煤浆气化装置设计与改造探讨[J].大氮肥,2012,35(2):133-135.
[4]李彦强,张志刚,李庆春,等.洗涤塔塔盘积灰的原因分析与改进[J].山东化工,2017,46(9):92-93.