摘要
进行了以煤为原料制备脱硫用吸附剂的实验研究．其中应用炭化与活化的方法，以对ＳＯ２吸附能力为衡量标准，系统地考察了样品在制备过程中不同温度、不同温升速率及时间对ＳＯ２吸附分离能力的影响，力求找出相应的最佳处理过程，并对机理进行探讨．实验表明以对ＳＯ２吸附能力为标准所得的结果同其它方法相比，除炭化过程中部分结论外，总体相似．即炭化温度在４００—６００℃之间，炭化时间为２８ｈ左右，温升速率较低的条件下无氧炭化后所得的样品，再经过８７０℃环境下在ＣＯ２中活化３０ｈ，可得内孔发达、对ＳＯ２吸附能力很强的吸附剂．
Sorbent prepared from coal for SO_2 removal were studied.By using of the adsorption capacity for SO_2 as a measuring standard,the optimum process for the adsorbent production was investigated.It was found that the adsorption capacity of product of pyrolyzing is similar to that produced by other process.Porous sorbent with high adsorption capacity was able to be produced by pyrolyzing at 400—600℃ in N_2 for 2.8h and activated with CO_2 at 870℃ for about 3.0h.
出处
《环境科学学报》
CAS
CSSCI
CSCD
北大核心
1998年第3期242-247,共6页
Acta Scientiae Circumstantiae
关键词
吸附
分离
脱硫
煤基吸附剂
adsorption, desulphurize, pyrolyze, coal,SO_2.
