Abstract

Coking coal dust is extremely hydrophobic; therefore, combination with droplets in the air is difficult and dust suppression is challenging. Here, a dust suppressant spray for coking coal dust was studied in order to improve of the combination of droplets and coking coal dust. Based on monomer optimization and compounding analysis, two surfactant monomers, fatty alcohol ether sodium sulfate (AES) and sodium dodecyl benzene sulfonate (SDBS) were selected as the surfactant components of the dust suppressant. The surfactant monomers were combined with four inorganic salts and the reverse osmosis moisture absorption of each solution was determined. By combining the reverse osmosis moisture absorption values with the water retention experimental results, CaCl₂ was identified as the optimal inorganic salt additive for the dust suppressant. Finally, the optimal concentration of each component was obtained using orthogonal experimental design i.e., AES (0.03%), SDBS (0.05%), and CaCl₂ (0.4%). The dust suppressant solution formulated using this method had a high moisture absorption capacity and excellent performance.

Graphic Abstract

中文翻译：

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焦煤抑尘喷雾剂的制备及性能分析

摘要

焦煤粉尘具有极强的疏水性。因此，很难与空气中的液滴结合，并且抑制粉尘具有挑战性。在此，研究了用于焦煤粉尘的抑尘喷雾剂，以改善液滴和焦煤粉尘的结合。基于单体的优化和配合分析，选择了两种表面活性剂单体：脂肪醇醚硫酸钠（AES）和十二烷基苯磺酸钠（SDBS）作为粉尘抑制剂的表面活性剂组分。将表面活性剂单体与四种无机盐混合，并确定每种溶液的反渗透吸湿率。通过将反渗透的水分吸收值与保水实验结果相结合，得出CaCl ₂被确定为粉尘抑制剂的最佳无机盐添加剂。最后，使用正交实验设计即AES（0.03％），SDBS（0.05％）和CaCl ₂（0.4％）获得每种组分的最佳浓度。使用该方法配制的抑尘剂溶液具有高的吸湿能力和优异的性能。

图形摘要