太西煤一步法制备活性炭及其脱汞性能研究

发布时间：2018-06-06 05:32

  本文选题：活性炭 + 脱汞　； 参考：《炭素技术》2017年03期

【摘要】：活性炭喷射技术(ACI,Activated Carbon Injection)被公认为成熟、可靠的烟气脱汞方法,但活性炭昂贵成本严重影响了该技术的广泛推广。原煤直接活化法生产脱汞活性炭,可以大幅度降低活性炭生产成本。试验以宁夏太西低灰无烟煤为原料用水蒸气直接活化制备活性炭,研究了原煤粒度、活化温度、烧失率对活性炭吸附和脱汞性能的影响。研究发现,原煤粒度为3~4mm,活化温度为910℃,烧失率为71%时,制备的活性炭比表面积最大,高达1 124 m~2/g。脱汞试验结果表明,活性炭脱汞性能受工艺条件影响,但与活性炭比表面积没有明显相关性;经载溴改性后,活性炭的脱汞性能大幅度提升,且与活性炭的比表面积呈现良好相关性。对比研究发现,直接活化法制得的活性炭脱汞性能优于传统方法生产的活性炭。
[Abstract]:Activated carbon injection technology has been recognized as a mature and reliable method to remove mercury from flue gas. However, the high cost of activated carbon has seriously affected the wide spread of the technology. Direct activation of raw coal to produce mercuric activated carbon can greatly reduce the production cost of activated carbon. Activated carbon was prepared from low-ash anthracite from Taixi, Ningxia. The effects of raw coal particle size, activation temperature and burning loss rate on the adsorption and mercury removal of activated carbon were studied. The results show that the activated carbon has the largest specific surface area of 1 124 mg / g when the particle size of raw coal is 3 ~ 4 mm, activation temperature is 910 鈩，

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