Interactions between fluorocarbon surfactant and coal dust at macro, meso and molecular scales and their applications in coal dust control

煤尘 润湿 肺表面活性物质 吸附 氟碳化合物 表面张力 化学工程 粒子(生态学) 化学 分子 粒径 接触角 材料科学 复合材料 有机化学 热力学 物理化学 物理 工程类 地质学 海洋学
作者
Wenjin Niu,Wen Nie,Qiu Bao,Qifan Tian,Fei Liu,Ruoxi Li,Xiaohan Zhang,Felicie Mwabama Ilele,Stephen Nyabire Akanyange
出处
期刊:Chemical Engineering Journal [Elsevier BV]
卷期号:475: 146059-146059 被引量:68
标识
DOI:10.1016/j.cej.2023.146059
摘要

Surfactants play an important role in the field of coal dust prevention, among which fluorocarbon surfactants have the advantages of low surface tension and have the potential to become mine dust suppressants. In this study, the wettability of fluorocarbon surfactant (OBS) on coal dust was studied from macro experiments, meso dust mist coupling and micro molecular simulation. The results showed that the surface tension of 0.06% OBS was as low as 17.6 mN/m, and the median particle size of coal dust reached 60.25 μm after wetting coal dust. Coal dust particles are easier to bond with each other into large particles, thus promoting settlement; During the meso collision between droplets and coal dust particles, OBS droplets showed excellent wetting and spreading effect, and the droplet state was stable, and the optimal spraying velocity was determined to be 20–30 m/s; At the molecular level, the diffusion coefficient of water molecules in the OBS system is minimally 0.46 Å2/ps, indicating a strong ability to constrain water molecules. The strength and energy of the hydrogen bonds formed with water molecules were greater than those of hydrocarbon surfactants, resulting in the best adsorption of water molecules. Additionally, it was found that the law of attractive and competitive adsorption of different surfactants in wetting coal dust is based on the difference in positive and negative electrostatic potential, where the greater the difference, the stronger the interaction. This provides a theoretical reference for judging the wetting performance of different surfactants at the molecular level.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
2秒前
3秒前
ylq发布了新的文献求助10
3秒前
diraczh完成签到,获得积分10
4秒前
精神是块骨头完成签到,获得积分10
7秒前
肖肖发布了新的文献求助10
8秒前
MWY关闭了MWY文献求助
8秒前
duhdhd完成签到,获得积分10
9秒前
卓矢完成签到 ,获得积分10
11秒前
14秒前
科目三应助越啊采纳,获得10
15秒前
lixia完成签到 ,获得积分10
15秒前
15秒前
无花果应助liu采纳,获得10
20秒前
李健的粉丝团团长应助fhh采纳,获得10
20秒前
滴滴滴发布了新的文献求助10
20秒前
王佳亮完成签到,获得积分10
21秒前
22秒前
23秒前
赘婿应助anna采纳,获得10
24秒前
water发布了新的文献求助10
25秒前
奋斗绿旋完成签到,获得积分10
26秒前
26秒前
xiaixax发布了新的文献求助10
27秒前
大罗发布了新的文献求助10
28秒前
马小跳关注了科研通微信公众号
30秒前
lyy完成签到 ,获得积分10
30秒前
黑犬发布了新的文献求助10
31秒前
上官若男应助橘笙采纳,获得10
32秒前
滴滴滴完成签到,获得积分20
32秒前
Bio应助wwz采纳,获得30
35秒前
黑犬完成签到,获得积分10
35秒前
皮皮吧啦完成签到,获得积分10
37秒前
Zyk完成签到,获得积分10
39秒前
39秒前
40秒前
Aprilapple完成签到,获得积分10
40秒前
40秒前
c_123完成签到,获得积分10
41秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989069
求助须知:如何正确求助?哪些是违规求助? 3531351
关于积分的说明 11253589
捐赠科研通 3269939
什么是DOI,文献DOI怎么找? 1804851
邀请新用户注册赠送积分活动 882074
科研通“疑难数据库(出版商)”最低求助积分说明 809073