本文選題：表面活性劑 + 瓦斯解吸量　； 參考：《煤炭工程》2017年12期

【摘要】：為明確表面活性劑對(duì)煤體瓦斯解吸特性的影響,實(shí)驗(yàn)測(cè)定了十二烷基苯磺酸鈉(SDBS)與椰油酸二乙醇酰胺(CDEA)在不同濃度的表面張力、接觸角,選擇新疆硫磺溝4-504煤樣測(cè)定SDBS、CDEA以及兩者復(fù)配條件下煤體瓦斯解吸量及解吸速度。結(jié)果表明:煤體瓦斯解吸總量隨解吸時(shí)間的增加而增加,最后趨于穩(wěn)定,兩者符合Langmuir關(guān)系;解吸速度隨解吸時(shí)間增加逐漸減小,符合冪函數(shù)關(guān)系;隨著表面活性劑濃度的增加,表面張力、接觸角、煤體瓦斯解吸量和解吸速度均減小;接觸角、表面張力與單一表面活性劑濃度都符合冪函數(shù)關(guān)系;瓦斯解吸量、解吸速度與單一表面活性劑濃度是負(fù)線性相關(guān)關(guān)系;與復(fù)配的表面活性劑濃度成非線性遞減關(guān)系。
[Abstract]:The surface tension and contact angle of sodium dodecylbenzene sulfonate (SDBs) and coconut oil diethanolamide (CDEA) at different concentrations were determined in order to determine the effect of surfactant on the gas desorption characteristics of coal body. The coal samples from Xinjiang Sulphur ditch 4-504 were selected to determine the SDBS CDEA and the gas desorption capacity and desorption rate of coal body under the condition of the combination of them. The results show that the total amount of gas desorption increases with the increase of desorption time and tends to be stable, both of which conform to Langmuir relation, the desorption rate decreases gradually with the increase of desorption time and accords with the power function relationship, and with the increase of surfactant concentration, the desorption rate decreases gradually with the increase of desorption time. Surface tension, contact angle, gas desorption capacity and desorption rate of coal body are all reduced; contact angle, surface tension and concentration of single surfactant are all in accordance with power function; The desorption rate has a negative linear correlation with the concentration of a single surfactant and a nonlinear decreasing relationship with the concentration of the complex surfactant.
【作者單位】： 西安科技大學(xué)安全科學(xué)與工程學(xué)院教育部西部礦井開采及災(zāi)害防治重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金(51674192,51604220) 陜西省青年科技新星專項(xiàng)(2014KJXX69) 陜西省教育廳專項(xiàng)科研項(xiàng)目(16JK1514)
【分類號(hào)】：TD712

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本文編號(hào)：2080717