提高内蒙古低阶煤气化水煤浆浓度的实验研究  

Improvement on coal water slurry concentration prepared from Inner Mongolia low-rank coal

作　　者：张桂玲[1,2,3] 杜丽伟[1,2,3] 刘烨炜[1,2,3] 

机构地区：[1]煤炭科学研究总院节能工程技术研究分院,北京100013 [2]煤炭资源开采与环境保护国家重点实验室,北京100013 [3]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013

出　　处：《洁净煤技术》2013年第4期55-58,共4页Clean Coal Technology

摘　　要：低阶煤的内水高、含氧官能团多、可磨性差等特点导致其成浆浓度低,不利于后续以低阶煤水煤浆为原料的气化。为了解决上述问题,以内蒙古1号,2号煤样为研究对象,对比了采用普通制浆工艺与分级研磨制浆工艺制备的水煤浆的各种性能。结果表明:分级研磨制浆工艺不仅显著提高了2种煤浆-0.075 mm粒级含量。且当固定浆体表观黏度为1200 mPa.s、粗粉与细粉质量比为70∶30时,2种煤样所制水煤浆的最高成浆浓度分别为61.39%和58.52%,比普通制浆工艺所制水煤浆的最高成浆浓度分别提高了3.92%和3.94%,成浆浓度的显著提高有利于后续的水煤浆气化。High inherent moisture, lots of oxygen-containing functional groups and poor grindability of low-rank coal lead to lower coal water slurry （ CWS ） concentration, which limit the subsequent gasification. To resolve these problems, taking Inner Mongolia NO. 1 and NO. 2 coal as research objects, compare the characteristics of two kinds of coal water slurry which are prepared by traditional CWS preparation method and preliminary grinding method respectively. The results show that, the latter method can dramatically improve the content of -0. 075 mm size fraction. Stabilize the apparent viscosity at 1200 mPa . s ,when the mass ratio of middings and fines is 70 to 30 ,the highest CWS concentration of these two coals is 61.39 percent and 58.52 percent respectively, improved by 3.92 percent and 3.94 percent respectively compared with traditional CWS preparation method. The improvement of CWS concentration is beneficial for the subsequent gasification.

关 键 词：低阶煤 分级研磨 水煤浆 气化 制浆工艺 

分 类 号：TQ536[化学工程—煤化学工程] TD849[矿业工程—煤矿开采]