【摘要】：強(qiáng)化煤層氣CH_4開采的深部煤層封存CO_2技術(shù)能夠有效減少CO_2的排放。由于煤基質(zhì)具有的吸附性能是煤體吸附CH_4及封存CO_2的主要機(jī)理,且煤基質(zhì)表面官能團(tuán)對(duì)于煤體CO_2和CH_4吸附能力具有潛在的影響,因此本文闡述了表面官能團(tuán)對(duì)煤體CO_2和CH_4吸附性能的作用及機(jī)理,歸納了煤基質(zhì)表面官能團(tuán)的修飾及表征方法,指出了煤基質(zhì)表面官能團(tuán)對(duì)CO_2和CH_4吸附作用規(guī)律的研究趨勢(shì)。分析表明:影響煤體CO_2和CH_4吸附性能的官能團(tuán)主要包括含氧和含氮官能團(tuán);整體上,含氧官能團(tuán)有利于CO_2吸附,含氧官能團(tuán)對(duì)CH_4的吸附作用仍存在一定爭(zhēng)議,含氮官能團(tuán)均有利于提升煤體CO_2和CH_4吸附能力;官能團(tuán)表征方法包括化學(xué)分析法、程序升溫脫附、X射線光電子能譜、傅里葉變換紅外光譜和核磁共振波譜。為了深入研究煤基質(zhì)表面官能團(tuán)對(duì)其吸附性能的作用規(guī)律,后續(xù)需開展以下工作:建立更為真實(shí)的煤體結(jié)構(gòu)模型,提高理論模擬研究工作的預(yù)測(cè)精度;強(qiáng)化實(shí)驗(yàn)科學(xué)研究,彌補(bǔ)目前主要以理論模擬為研究手段的不足;優(yōu)化煤體預(yù)處理方法,提高現(xiàn)有官能團(tuán)表征方法用于煤基質(zhì)官能團(tuán)分析的精確度。
[Abstract]:The technology of sealing CO_2 in deep coal seam can effectively reduce the emission of CO_2 by strengthening CH_4 mining of coalbed methane. Because the adsorption performance of coal matrix is the main mechanism of adsorbing CH_4 and storing CO_2, the surface functional groups of coal matrix have a potential influence on the adsorption ability of CO_2 and CH_4 of coal body. In this paper, the effect and mechanism of surface functional groups on the adsorption properties of CO_2 and CH_4 on coal were discussed, and the modification and characterization methods of surface functional groups of coal matrix were summarized. The research trend of adsorption of CO_2 and CH_4 by functional groups on the surface of coal matrix was pointed out. The results show that the functional groups which affect the adsorption properties of CO_2 and CH_4 mainly include oxygen and nitrogen functional groups. On the whole, the oxygen-containing functional groups are beneficial to the adsorption of CO_2, and the adsorption of oxygen-containing functional groups to CH_4 is still controversial. The nitrogen-containing functional groups are beneficial to enhance the adsorption capacity of CO_2 and CH_4 in coal. The functional groups were characterized by chemical analysis, temperature programmed desorption, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. In order to further study the effect of functional groups on the adsorption properties of coal matrix, the following work should be carried out: to establish a more realistic coal structure model and to improve the prediction accuracy of theoretical simulation; Strengthen the experimental scientific research to make up for the deficiency of theoretical simulation, optimize the coal pretreatment method, improve the accuracy of the existing functional group characterization methods used in the analysis of coal matrix functional groups.
【作者單位】： 昆明理工大學(xué)化學(xué)工程學(xué)院;中煤科工集團(tuán)西安研究院有限公司;太原理工大學(xué)礦業(yè)工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(41302132) 云南省教育廳科學(xué)研究基金(2015Y063)項(xiàng)目
【分類號(hào)】：TE377;TQ531
，

本文編號(hào)：2441909