封存过程中二氧化碳对煤体理化性质的作用规律

doi:10.16085/j.issn.1000-6613.2015.01.046

摘要/Abstract

摘要： 强化煤层气(CH₄)开采的深部煤层封存二氧化碳(CO₂)技术能够将主要人为温室气体进行有效存储,但基于煤体特征和适宜储层条件下的CO₂流体特性,CO₂流体和煤体之间存在除吸附作用以外的其他流-固作用。CO₂流体和煤体之间的流-固作用关系既会影响煤层的CO₂封存潜力又会引发潜在的环境问题。为此,本文结合国内外的相关研究工作,介绍了煤层封存CO₂过程中煤体理化性质变化的研究成果,归纳了煤体理化性质变化对煤层封存CO₂潜力的影响,指出了煤体理化性质变化由此造成的环境安全与健康风险问题。分析表明:深部煤层封存CO₂过程中流-固作用及其影响主要包括两个方面:①CO₂流体能够诱导煤基质发生溶胀效应,因而会影响注入的CO₂流体在煤层内部的扩散和吸附能力;②CO₂流体具有萃取煤基质内部有机物的能力,会对环境安全与健康造成威胁。此外,本文还指出了煤基质溶胀机理及其可逆性、煤基质中被萃取出有机物的定性与定量分析是后续煤和CO₂流体作用关系的重要研究方向。

关键词: 二氧化碳, 煤, 存埋, 超临界流体, 物理化学结构, 二氧化碳, 煤, 存埋, 超临界流体, 物理化学特性

Abstract: CO₂ sequestration in deep coal seams with enhanced coal-bed methane(CH₄)recovery (CO₂-ECBM)can store the main anthropogenic greenhouse gas(CO₂)in geological time. It is acknowledged that complex fluid-solid interactions exist other than adsorption between CO₂ fluid and coal due to their special characteristics under optimum reservoir conditions. The above fluid-solid interactions not only influence the CO₂ sequestration capacity of coal seams, but also incur some potential environmental issues. The recent research progress of coal physico-chemical characteristics transformation during sequestration process is summarized. The effect of coal physico-chemical characteristics transformation on CO₂ sequestration capacity of the targeted coal seams is elaborated and environmental safety and health(ES & H)problems due to coal physico-chemical characteristics transformation are also indicated. The fluid-solid interactions during CO₂ sequestration in deep coal seams mainly incorporate two aspects as follows. On one hand, coal matrix swelling occurs due to CO₂injection which will influence diffusion and adsorption behavior of CO₂ in coal seams. On the other hand, supercritical CO₂ fluid has the potential to extract organic matter in coal matrix, causing ES & H problems. Furthermore, investigation on the mechanism and reversibility of coal matrix swelling, and qualitative and quantitative analysis of the organic matter extracted from coal matrix should be paid attention in the future.

Key words: carbon dioxide, coal, sequestration, supercritical fluid, physico-chemical structure, carbon dioxide, coal, sequestration, supercritical fluid, physico-chemical characteristics

中图分类号:

X511

王倩倩, 张登峰, 王浩浩, 顾丽莉, 杨劲, 杨荣, 陶军. 封存过程中二氧化碳对煤体理化性质的作用规律[J]. 化工进展, 2015, 34(1): 258-265.

WANG Qianqian, ZHANG Dengfeng, WANG Haohao, GU Lili, YANG Jin, YANG Rong, TAO Jun. Effect of CO₂on physico-chemical characteristics of coal during sequestration process:A perspective[J]. Chemical Industry and Engineering Progree, 2015, 34(1): 258-265.

参考文献

[1] Haszeldine R S. Carbon capture and storage:How green can black be？[J] Science,2009,325(5948):1647-1652.

[2] Orr Franklin M Jr. Onshore geologic storage of CO₂[J]. Science,2009,325(5948):1656-1658.

[3] 臧雅琼,高振记,钟伟. CO₂地质封存国内外研究概况与应用[J]. 环境工程技术学报,2012,2(6):503-506.

[4] 王建秀,吴远斌,于海鹏. 二氧化碳封存技术研究进展[J]. 地下空间与工程学报,2013,9(1):81-90.

[5] 吕玉民,汤达祯,许浩,等. 提高煤层气采收率的CO₂埋存技术[J]. 环境科学与技术,2011,34(5):95-99.

[6] 降文萍,张庆玲,崔永君. 不同变质程度煤吸附二氧化碳的机理研究[J]. 中国煤层气,2010,7(4):19-22.

[7] Li W,Cheng Y P,Wang L. The origin and formation of CO₂ gas pools in the coal seam of the Yaojie coalfield in China[J]. International Journal of Coal Geology,2011,85(2):227-236.

[8] Zhang D F,Cui Y J,Liu B,et al. Supercritical pure methane and CO₂ adsorption on various rank coals of China:Experiments and modeling[J]. Energy & Fuels,2011,25(4):1891-1899.

[9] Kintisch E. Carbon emissions:Report backs more projects to sequester CO₂ from coal[J]. Science,2007,315(5818):1481.

[10] White C M,Smith D H,Jones K L,et al. Sequestration of carbon dioxide in coal with enhanced coalbed methane recovery:A review[J]. Energy & Fuels,2005,19(3):659-724.

[11] Kuuskraa V A,Boyer C M,Kelafant A. Hunt for qualify basins goes abroad[J]. Oil & Gas Journal,1992,90(40):49-54.

[12] Fitzgerald J E,Sudibandriyo M,Pan Z,et al. Modeling the adsorption of pure gases on coals with the SLD model[J]. Carbon,2003,41(12):2203-2216.

[13] Dutta P,Harpalani S,Prusty B. Modeling of CO₂ sorption on coal[J]. Fuel,2008,87(10-11):2023-2036.

[14] Clarkson C R,Bustin R M. Binary gas adsorption/desorption isotherms:Effect of moisture and coal composition upon carbon dioxide selectivity over methane[J]. International Journal of Coal Geology,2000,42(4):241-271.

[15] Majewska Z,Ceglarska-Stefanska G,Majewski S,et al. Binary gas sorption/desorption experiments on a bituminous coal:Simultaneous measurements on sorption kinetics,volumetric strain and acoustic emission[J]. International Journal of Coal Geology,2009,77(1-2):90-102.

[16] Kurniawan Y,Bhatia S K,Rudolph V. Simulation of binary mixture adsorption of methane and CO₂ at supercritical conditions in carbons[J]. AIChE Journal,2006,52(3):957-967.

[17] Shi J Q,Mazumder S,Wolf K H,et al. Competitive methane desorption by supercritical CO₂ injection in coal[J]. Transport in Porous Media,2008,75(1):35-54.

[18] Zhang D F,Cui Y J,Liu B,et al. Displacement behavior of methane adsorbed on coal by CO₂ injection[J]. Industrial & Engineering Chemistry Research,2011,50(14):8742-8749.

[19] Zhou F D,Hussain F,Cinar Y. Injecting pure N₂and CO₂ to coal for enhanced coalbed methane:Experimental observations and numerical simulation[J]. International Journal of Coal Geology,2013,116:53-62.

[20] Liu J S,Chen Z W,Elsworth D,et al. Linking gas-sorption induced changes in coal permeability to directional strains through a modulus reduction ratio[J]. International Journal of Coal Geology,2010,83(1):21-30.

[21] van Bergen F,Hol S,Spiers C. Stress-strain response of pre-compacted granular coal samples exposed to CO₂,CH₄,He and Ar[J]. International Journal of Coal Geology,2011,86(2-3):241-253.

[22] Perera M S A,Ranjith P G,Choi S K,et al. The effects of sub-critical and super-critical carbon dioxide adsorption-induced coal matrix swelling on the permeability of naturally fractured black coal[J]. Energy,2011,36(11):6442-6450.

[23] Bachu S,Bonijoly D,Bradshaw J,et al. CO₂ storage capacity estimation:Methodology and gaps[J]. International Journal of Greenhouse Gas Control,2007,1(4):430-443.

[24] Bachu S. Carbon dioxide storage capacity in uneconomic coal beds in Alberta,Canada:Methodology,potential and site identification[J]. International Journal of Greenhouse Gas Control,2007,1(3):374-385.

[25] Saghafi A,Pinetown K L,Grobler P G,et al. CO₂ storage potential of South African coals and gas entrapment enhancement due to igneous intrusions[J]. International Journal of Coal Geology,2008,73(1):74-87.

[26] Charrière D,Pokryszka Z,Behra P. Effect of pressure and temperature on diffusion of CO₂ and CH₄ into coal from the Lorraine basin(France)[J]. International Journal of Coal Geology,2010,81(4):373-380.

[27] Ozdemir E,Morsi B I,Schroeder K. Importance of volume effects to adsorption isotherms of carbon dioxide on coals[J]. Langmuir,2003,19(23):9764-9773.

[28] Cui X J,Bustin R M,Dipple G. Selective transport of CO₂,CH₄,and N₂ in coals:Insights from modeling of experimental gas adsorption data[J]. Fuel,2004,83(3):293-303.

[29] Larsen J W,Flowers R A,Hall P J,et al. Structural rearrangement of strained coals[J]. Energy & Fuels,1997,11(5):998-1002.

[30] Clarkson C R,Bustin R M. The effect of pore structure and gas pressure upon the transport properties of coal:A laboratory and modeling study. 1. Isotherms and pore volume distributions[J]. Fuel,1999,78(11):1333-1344.

[31] Balan H O,Gumrah F. Assessment of shrinkage-swelling influences in coal seams using rank-dependent physical coal properties[J]. International Journal of Coal Geology,2009,77(1-2):203-213.

[32] Siriwardane H,Haljasmaa I,McLendon R,et al. Influence of carbon dioxide on coal permeability determined by pressure transient methods[J]. International Journal of Coal Geology,2009,77(1-2):109-118.

[33] Gathitu B B,Chen W Y,McClure M. Effects of coal interaction with supercritical CO₂:Physical structure[J]. Industrial & Engineering Chemistry Research,2009,48(10):5024-5034.

[34] Kutchko B G,Goodman A L,Rosenbaum E,et al. Characterization of coal before and after supercritical CO₂ exposure via feature relocation using field-emission scanning electron microscopy[J]. Fuel,2013,107:777-786.

[35] Zhang D F,Gu L L,Li S G,et al. Interactions of supercritical CO₂ with coal[J]. Energy & Fuels,2013,27(1):387-393.

[36] Chareonsuppanimit P,Mohammad S A,Robinson R L,et al. Modeling gas-adsorption-induced swelling and permeability changes in coals[J]. International Journal of Coal Geology,2014,121:98-109.

[37] Reucroft P J,Patel H. Gas-induced swelling in coal[J]. Fuel,1986,65(6):816-820.

[38] Pini R,Ottiger S,Burlini L,et al. Role of adsorption and swelling on the dynamics of gas injection in coal[J]. Journal of Geophysical Research,2009,114:1-14.

[39] Pan Z J,Connell L D. Modelling of anisotropic coal swelling and its impact on permeability behaviour for primary and enhanced coalbed methane recovery[J]. International Journal of Coal Geology,2011,85(3-4):257-267.

[40] Anggara F,Sasaki K,Rodrigues S,et al. The effect of megascopic texture on swelling of a low rank coal in supercritical carbon dioxide[J]. International Journal of Coal Geology,2014,125(2):45-56.

[41] Zarebska K,Ceglarska-Stefanska G. The change in effective stress associated with swelling during carbon dioxide sequestration on natural gas recovery[J]. International Journal of Coal Geology,2008,74(3-4):167-174.

[42] Karacan C Ö. Swelling-induced volumetric strains internal to a stressed coal associated with CO₂ sorption[J]. International Journal of Coal Geology,2007,72(3-4):209-220.

[43] Karacan C Ö. Heterogeneous sorption and swelling in a confined and stressed coal during CO₂ injection[J]. Energy & Fuels,2003,17(6):1595-1608.

[44] Karacan C Ö,Mitchell G D. Behavior and effect of different coal microlithotypes during gas transport for carbon dioxide sequestration into coal seams[J]. International Journal of Coal Geology,2003,53(4):201-217.

[45] 陈治宇. 超临界CO₂作用下低渗透煤层热弹塑性损伤模型及数值模拟[D]. 阜新:辽宁工程技术大学,2013.

[46] Majewska Z,Zi?tek J. Changes of acoustic emission and strain in hard coal during gas sorption-desorption cycles[J]. International Journal of Coal Geology,2007,70(4):305-312.

[47] Goodman A L,Favors R N,Hill M M,et al. Structure changes in Pittsburgh No. 8 Coal caused by sorption of CO₂gas[J]. Energy & Fuels,2005,19(4):1759-1760.

[48] Busch A,Gensterblum Y,Krooss B M. Methane and CO₂ sorption and desorption measurements on dry Argonne premium coals:Pure components and mixtures[J]. International Journal of Coal Geology,2003,55(2-4):205-224.

[49] Masoudian M S,Airey D W,El-Zein A. Experimental investigations on the effect of CO₂on mechanics of coal[J]. International Journal of Coal Geology,2014,128:12-23.

[50] Day S,Fry R,Sakurovs R. Swelling of Australian coals in supercritical CO₂[J]. International Journal of Coal Geology,2008,74(1):41-52.

[51] Melnichenko Y B,Radlinski A P,Mastalerz M,et al. Characterization of the CO₂ fluid adsorption in coal as a function of pressure using neutron scattering techniques (SANS and USANS)[J]. International Journal of Coal Geology,2009,77(1-2):69-79.

[52] Mohammad S A,Gasem K A M. Modeling the competitive adsorption of CO₂ and water at high pressures on wet coals[J]. Energy & Fuels,2011,26(1):557-568.

[53] Jüntgen H. Review of the kinetics of pyrolysis and hydropyrolysis in relation to the chemical constitution of coal[J]. Fuel,1984,63(6):731-737.

[54] Mazumder S,van Hemert P,Bruining J,et al. In situ CO₂-coal reactions in view of carbon dioxide storage in deep unminable coal seams[J]. Fuel,2006,85(12-13):1904-1912.

[55] Nishino J. Adsorption of water vapor and carbon dioxide at carboxylic functional groups on the surface of coal[J]. Fuel,2001,80(5):757-764.

[56] Huang X,Chu W,Sun W J,et al. Investigation of oxygen-containing group promotion effect on CO₂-coal interaction by density functional theory[J]. Applied Surface Science,2014,299(2):162-169.

[57] 苏秀霞,杨祥龙,诸晓锋,等. 新型材料淀粉微球对Cu²⁺、Cr³⁺和Pb²⁺的吸附机理研究[J]. 环境工程学报,2010,4(3):492-496.

[58] 苏喆,李树林,王琰,等. 粉末活性炭和二氧化氯在长距离原水输送中除嗅研究[J]. 华北水利水电学院学报,2011,32(3):123-125.

[59] Cao X Y,Mastalerz M,Chappell M A,et al. Chemical structures of coal lithotypes before and after CO₂ adsorption as investigated by advanced solid-state ¹³C nuclear magnetic resonance spectroscopy[J]. International Journal of Coal Geology,2011,88(1):67-74.

[60] Mastalerz M,Drobniak A,Rupp J. Meso- and micropore characteristics of coal lithotypes:Implications for CO₂ adsorption[J]. Energy & Fuels,2008,22(6):4049-4061.

[61] 朱自强. 超临界流体技术原理和应用[M]. 北京:化学工业出版社,2000:20.

[62] Kolak J J,Burruss R C. Geochemical investigation of the potential for mobilizing non-methane hydrocarbons during carbon dioxide storage in deep coal beds[J]. Energy & Fuels,2006,20(2):566-574.

[63] 岳立新,孙可明,张风嘉,等. 超临界CO₂作用下有效应力对煤体渗透性影响[J]. 辽宁工程技术大学学报,2013,32(9):1157-1160.

[64] 马尚权,付京. 电磁辐射作用下煤中自由基影响瓦斯突出的研究[J]. 华北科技学院学报,2004,11(1):1-4,13.

[65] 高晋生. 煤的热解、炼焦和煤焦油加工[M]. 北京:化学工业出版社,2010:18-21.