两种不同稳定剂对水焦浆稳定性的影响

为提高水焦浆的稳定性,采用A、B两种稳定剂制备水焦浆,考察对比了2种稳定剂对水焦浆的表观黏度和析水率的影响。结果表明,A物质的添加量为0.3%时,随着浓度的增加,流动性逐渐变差,表观黏度上升,由873 m Pa·s增至1 039 m Pa·s,析水率由11.61%降至8.57%。B物质的添加量为0.3%时,随着浓度的增加,流动性逐渐变差,表观黏度由891 m Pa·s增至1 187 m Pa·s,析水率逐渐下降,由6.30%降至3.45%。2种添加剂均可提高水焦浆的稳定性。随着2种稳定剂添加量的增加,水焦浆黏度有所增加,析水率逐渐降低,即稳定性增加。添加0.3%的B物质时浆体的黏度低于添加0.6%的A物质的水焦浆黏度,而浆体的析水率也优于添加0.6%的A物质水焦浆的析水率,因此B物质对稳定性的提升效果要优于A物质。

Effect of two different stabilizers on stability of water coke slurry

The purpose of this article is to enhance the stability of water coke slurry,two kinds of stabilizers was added into water coke slurry to investigate their effects on the apparent viscosity and stability of the slurry.Results show that the apparent viscosity of slurry increase from 873 mPa · s to 1 039 mPa · s and the ratio of water separation decrease from 11.61％ to 8.57％ when mixed A at the dose of 0.3％.Likewise,the apparent viscosity of slurry increase from 891 mPa · s to 1 187 mPa · s and the ratio of water separation decrease from 6.30％ to 3.45％ when mixed B at the same dose of 0.3％.Both of the two kinds of stabilizers can significantly improve the stability of the slurry and increase the apparent viscosity of slurry,while the ratio of water separation was decreased with gradually addition of two kinds of stabilizers.The effect of stability of B was better than A to the apparent viscosity and stability of slurry,which was lower by adding O.3％ B than that by adding 0.6％.