College of Safety Science and Engineering, Xi’an University of Science and Technology
The Western Coal Mine Gas Disaster Prevention and Control Key Laboratory of Higher Education in Shaanxi Province,Xi’ an University of Science and Technology
College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology

为研究稳泡剂作用下表面活性剂泡沫性能对瓦斯解吸效应的影响,选取十二烷基苯磺酸钠(SDBS)、十二烷基硫酸钠(SDS)和辛癸基葡糖苷(APG0810)3种不同表面活性剂与稳泡剂羧甲基纤维素(CMC)配置溶液;通过测定溶液表面张力、黏度、发泡能力和泡沫稳定性等参数,确定具有最佳泡沫性能溶液组成,并探讨温度和煤样含水率等对该溶液泡沫稳定性的影响;利用高压瓦斯吸附解吸装置开展含稳泡剂的不同表面活性剂对瓦斯解吸效应影响试验。结果表明:SDBS质量分数为0.15%的溶液泡沫半衰期与发泡体积最佳,分别为239.34min和17.33mL;添加CMC后,溶液泡沫半衰期与发泡体积有明显上升,0.15%SDBS+0.50%CMC时达到最大值,分别为343.92min和19.33mL,此配比溶液为具有最佳泡沫性能溶液;当温度降低或煤样含水率增加时,煤体表面泡沫体积随着时间的变化增幅较小,该条件下泡沫的稳定性增加;0.15%SDBS+0.50%CMC配比溶液浸润煤样后,较不添加CMC溶液浸润煤样瓦斯解吸时间延长5min;添加CMC会加快水分子的形成,增加水层的厚度,延长泡沫在煤样中存在时间和覆盖面积,有效延缓瓦斯释放时间,为高效表面活性剂抑制瓦斯解吸规律及机理研究提供参考。

In order to examine the influence of surfactant foam performance on methane desorption un- der the effect of foam stabilizer, three different surfactants, sodium dodecyl benzene sulfonate( SDBS) , sodium dodecyl sulphate( SDS) and alkyl glycoside surfactant( APG0810) , as well as the stabilizing a- gent, carboxymethyl cellulose( CMC) , were selected to configure solutions. The parameters of the solu- tion, such as surface tension, viscosity, foaming ability and foam stability, were found out to determine the solution composition with optimal foam performance, and the influence of temperature and coal sam- ple water content on the foam stability of the solution was explored. A high-pressure gas adsorption and desorption device was used to carry out the investigation of different surfactants containing stabilizer on foam stability. The study shows that: SDBS mass fraction of 0. 15 of the solution foam half-life and foam volume is the best, respectively, 239. 34 min and 17. 33 mL. After adding CMC, the solution foam half- life and foam volume has a significant increase in the 0. 15% SDBS + 0. 50% CMC to reach the maxi- mum value, respectively, 343. 92 min and 19. 33 mL. When the temperature decreases or the moisture content of coal samples increases, the increase of foam volume on the surface of coal body with time is small, which indicates that the foam stability increase under this condition. 0. 15% SDBS + 0. 50% CMC ratio solution infiltrates the coal samples, and the time of methane desorption is extended by 5 min com- pared with that of infiltrates the coal samples without CMC solution. The addition of CMC accelerates the formation of water molecules, increase the thickness of water layer, and prolong the existence time and coverage area of foam in coal samples, and effectively delay the methane desorption time. The re- sults could provide a reference for the study of the study of the law and mechanism of inhibition of methane desorption by high efficiency surfactants.

国家重点研发计划项目(2023YFC3009001);国家自然科学基金项目(5227042662);国家资助博士后研究人员计划项目(GZC20232135)

严敏,王欣宇,闫冬洁,等.羧甲基纤维素对表面活性剂泡沫性能及瓦斯解吸影响研究[J].西安科技大学学报,2024,44(5):835-845.

YAN Min, WANG Xinyu, YAN Dongjie, et al. Research on the effect of carboxymethyl cellulose on surfactant foam properties andmethane desorption[ J] . Journal of Xi’an University of Science and Technology, 2024, 44( 5) : 835- 845.