高硫煤电化学催化氧化脱硫试验研究

以山西石坷节煤样为原料,着重考察了酸性无隔膜体系中煤的电化学脱硫规律。讨论了电解电流,电解时间,电解质浓度,煤浆浓度,煤粉粒度以及催化剂种类等主要因素对煤脱硫率的影响,最终确定了电化学脱硫的较佳工艺条件。通过电化学催化氧化脱硫方法,有效缩短了电解反应时间,提高了脱硫效率,达到了有机硫和无机硫同步脱除的目的。试验结果表明煤中无机硫和有机硫都可获得理想的脱除效果,在有催化剂条件下获得无机硫脱除率为90%,有机硫脱除率为37.5%。硫的总脱除率达80%。

Experimental Study on Desulfurization of High-sulfur Coal by Electrochemical Catalysis and Oxidation

The coal samples in Shikejie in Shanxi were regarded as raw materials,emphasizedly investigating the discipline of electrochemical desulfurization of coal in acid undivided system.Through the discussion of such factors which influence the desulfurization rate as electrolytic current,electrolytic time,electrolyte concentration,coal slurry concentration,coal particle size and the type of catalyst,the optimal technological condition of electrochemical desulfurization was determined.By the way of electrochemicalcatalytic oxidation,the electrolytic reaction time was shortened,the desulfurization rate was improved and the aim of organic sulfur and inorganic sulfur being removed simultaneously was reaihed.The results showed that the organic and inorganic sulfur in the coal could be removed satisfactorily,especially on the condition of catalyst,the removal rate of inorganic sulfur can reach 90%,the organic sulfur 37.5% and the total sulfur 80%.