摘要
在Φ 2 8mm的反应管中 ,采用工业废液碱用于福建无烟煤固定床水蒸气气化实验。结果表明 ,该废液碱对福建无烟煤气化有很强的催化活性。在添加 3%～ 12 %废液碱的情况下 ,碳转化率均比无催化剂时增加 2 5 5倍～3 93倍 ,明显大于添加以Na2 CO3 为催化剂的碳转化率。同时该废液碱对煤气组成 ,产气量和煤气热值均有明显提高。在催化气化的同时加入适量的脱碱剂可极大地降低灰渣中的含碱量。
The experimental study on catalytic gasification of Fujian anthracite with steam using industrial waste liquor alkalis has been carried out in a Φ28?mm fixed-bed reactor. The results indicate that the alkali in the waste liquor exhibits the strong catalytic effect in Fujian anthracite(V daf=4.39%) gasification from 675?℃ to 835?℃. When adding 3%～12% waste liquor alkalis, the carbon conversions of coal are 2.55～3.93 times greater than that without catalyst and also apparently greater than that of adding 8% Na 2CO 3. The gas yield can reach 3.25～4.00?m 3/kg coal and the gas calorific values are all higher than 8.5?MJ/m 3 in these cases. When de-alkali additive is introduced during the catalytic gasification of adding 3%LA, 5%LA and 10%LA, the alkali content in residual ash-cinder after gasification will change from 0.34, 0.85 and 2.2(10 -3g alkali/g cinder) to 0.17, 0.5 and 1.4(10 -3g alkali/g cinder)respectively.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2002年第6期481-486,共6页
Journal of Fuel Chemistry and Technology
基金
福建省科技厅重点资助 (HG99 0 1)~~
关键词
水蒸气
无烟煤
催化气化
工业废液碱
催化剂
anthracite
catalytic gasification
waste liquor alkali
de-alkali additive
