摘要
水煤浆是一种流体煤基燃料,不易长时间保存。将原料煤制备成低水分的粒(粉)状煤基燃料,能够解决普通水煤浆的运输成本高,安全性、稳定性差等问题。本文进行了商丘煤泥成浆性及其制备粒(粉)状煤基燃料的试验研究。结果表明:商丘煤泥成浆性很好,可制备浓度为73%,粘度为1066 mPa.s的水煤浆。制备好的普通水煤浆掺入已磨制好的干煤粉可制出含水量为11%～18%的粒(粉)状煤基燃料,含水量越高,恢复成浆浓度就越高。制备煤基燃料时,掺入干煤粉中含有少量分散剂的恢复成浆浓度比不含分散剂要高2%左右。掺入干煤粉中粗细煤粉含量不同时,恢复成浆的最高浓度也不同。
Coal water slurry is a kind of fluidized coal-based fuel,which can＇t be stored for a long time.The high transportation cost,lax security and instability issues of common coal water slurry can be solved by making raw coal into granular coal-based fuel which contains lower moisture.The results show that the slurry formation property of Shangqiu slime is better.It can be made into coal water slurry whose mass fraction is 73%,viscosity is 1066 mPa·s.Adding dry pulverized coal into prepared commen coal water slurry can prepare granular coal-based fuel whose moisture is from 11 percent to 18 percent.The higher the moisture of coal-based fuel,the easier to restore slurry formation.The concentration of coal-based fuel when the dry pulverized coal is added a small amount of dispersant is 2 percent higher than that which is not added dispersant.Different additive amount of pulverized coal leads to the different highest concentration of coal-based fuel.
出处
《洁净煤技术》
CAS
2011年第6期23-26,共4页
Clean Coal Technology
基金
中央高校基本科研业务资助(2009QH07)
关键词
煤泥
水煤浆
煤基燃料
slime
coal water slurry
coal-based fuel
