{"id":56356,"date":"2022-10-19T06:00:43","date_gmt":"2022-10-18T22:00:43","guid":{"rendered":"http:\/\/learncmg.cn\/?p=56356"},"modified":"2022-10-19T06:00:43","modified_gmt":"2022-10-18T22:00:43","slug":"181%ef%bc%9a%e5%9c%b0%e4%b8%8b%e5%a4%9a%e5%ad%94%e4%bb%8b%e8%b4%a8%e4%b8%ad%e5%b8%a6%e6%9c%89co2%e5%9e%ab%e6%b0%94%e7%9a%84%e6%b0%a2%e6%b0%94%e5%82%a8%e5%ad%98%e6%95%b0%e5%80%bc%e6%a8%a1%e6%8b%9f","status":"publish","type":"post","link":"http:\/\/learncmg.cn\/?p=56356","title":{"rendered":"181. \u591a\u5b54\u4ecb\u8d28\u4e2d\u5e26\u6709CO2\u57ab\u6c14\u7684\u6c22\u6c14\u50a8\u5b58\u6570\u503c\u6a21\u62df\uff1aCO2\u6eb6\u89e3\u7684\u8fc7\u6ee4\u6548\u5e94"},"content":{"rendered":"<h3><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0360319922028373\">Numerical modelling of H2\u00a0storage with cushion gas of CO2\u00a0in subsurface porous media: Filter effects of CO2\u00a0solubility<\/a><\/h3>\n<h4><\/h4>\n<h5>\u672c\u7814\u7a76\u7684\u4e2d\u5fc3\u76ee\u6807\u662f\u63d0\u9ad8\u5bf9\u6c22\u6c14\uff08H2\uff09\u5728\u542b\u6709\u4e8c\u6c27\u5316\u78b3\uff08CO2\uff09\u57ab\u6c14\u7684\u5730\u4e0b\u591a\u5b54\u4ecb\u8d28\u4e2d\u50a8\u5b58\u671f\u95f4\u7684\u6d41\u52a8\u884c\u4e3a\u7684\u7406\u89e3\u3002\u5728\u672c\u7814\u7a76\u4e2d\uff0c\u6211\u4eec\u7814\u7a76\u4e86\u9a71\u52a8\u6d41\u52a8\u884c\u4e3a\u7684\u5404\u79cd\u56e0\u7d20\u4e4b\u95f4\u7684\u76f8\u4e92\u4f5c\u7528\uff0c\u5305\u62ec\u5e95\u5c42\u6e17\u900f\u7387\u7684\u975e\u5747\u8d28\u6027\u3001\u7c98\u5ea6\u4e0d\u7a33\u5b9a\u6027\u4ee5\u53ca\u7c98\u6ede\u529b\u548c\u91cd\u529b\u4e4b\u95f4\u7684\u5e73\u8861\u3002\u7279\u522b\u662f\uff0c\u6211\u4eec\u7814\u7a76\u4e86CO2\u5728\u6c34\u4e2d\u7684\u6eb6\u89e3\u5ea6\u5bf9H2\u7eaf\u5ea6\u6c34\u5e73\u7684\u5f71\u54cd\u3002\u8fd9\u4e00\u6548\u5e94\u9996\u6b21\u5728\u6c22\u6c14\u50a8\u5b58\u73af\u5883\u4e2d\u5f97\u5230\u8bc1\u660e\u3002\u6211\u4eec\u4ee5\u5341\u5206\u7cbe\u7ec6\u7684\u7f51\u683c\u5c3a\u5bf8\uff080.1 m\uff09\uff0c\u5728\u5206\u7c73\u5c3a\u5ea6\u4e0a\u8fdb\u884c\u4e86\u4e00\u7cfb\u52172D\u5782\u76f4\u622a\u9762\u6a21\u62df\uff0c\u4ee5\u8be6\u7ec6\u6355\u6349\u6d41\u52a8\u884c\u4e3a\u3002\u8fd9\u662f\u56e0\u4e3a\u5728\u8fd9\u79cd\u5c3a\u5ea6\u4e0b\uff0c\u6ce8\u5165\u6d41\u4f53\u548c\u5929\u7136\u6d41\u4f53\u4e4b\u95f4\u7684\u5927\u90e8\u5206\u6df7\u5408\u53d1\u751f\u5728\u7269\u7406\u591a\u5b54\u4ecb\u8d28\u4e2d\u3002<\/h5>\n<h5>\u7814\u7a76\u53d1\u73b0\uff0cCO2\u6eb6\u89e3\u5ea6\u53ef\u80fd\u5bf9H2\u56de\u91c7\u6709\u4e0d\u540c\u7684\uff08\u79ef\u6781\u548c\u6d88\u6781\uff09\u5f71\u54cd\uff08\u5373\uff0c\u5bf9\u4ea7\u51faH2\u7684\u7eaf\u5ea6\uff09\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u7cfb\u7edf\u4e2d\u7684\u6d41\u6001\u3002\u5728\u4ee5\u7c98\u6027\u4e3a\u4e3b\u7684\u533a\u57df\uff0c\u5728\u6ce8\u6c22\u671f\u95f4\uff0c\u7c98\u6027\u8f83\u5c0f\u7684H2\u53ef\u80fd\u6e17\u5165\u5e76\u7ed5\u8fc7CO2\u57ab\u6c14\u3002\u7531\u4e8e\u4e4b\u524d\u7ed5\u6d41\u7684CO2\u7684\u5408\u91c7\uff0c\u8fd9\u5bfc\u81f4\u5728\u91c7\u51faH2\u65f6\uff0cH2\u7eaf\u5ea6\u8fc5\u901f\u5927\u5e45\u964d\u4f4e\u3002\u6709\u8da3\u7684\u662f\uff0c\u8003\u8651\u5230CO2\u5728\u6c34\u4e2d\u7684\u6eb6\u89e3\u5ea6\uff0cH2\u4e2d\u7684\u6742\u8d28\u6c34\u5e73\u8981\u4f4e\u5f97\u591a\u3002\u8fd9\u662f\u56e0\u4e3a\u7ed5\u6d41\u7684CO2\u4f1a\u91cd\u65b0\u6eb6\u89e3\u5230\u7ed5\u8fc7\u533a\u57df\u5468\u56f4\u7684\u6c34\u4e2d\uff0c\u8fd9\u4f1a\u5927\u5927\u963b\u788dCO2\u5411\u751f\u4ea7\u4e95\u7684\u8fd0\u79fb\u3002\u5728\u91cd\u529b\u4e3b\u5bfc\u7684\u60c5\u51b5\u4e0b\uff0cH2\u805a\u96c6\u5728\u6a21\u578b\u9876\u90e8\uff0c\u4ee5\u51e0\u4e4e\u6d3b\u585e\u5f0f\u7684\u65b9\u5f0f\u7f6e\u6362\u5e95\u5c42\u57ab\u6c14\u3002\u5728\u8fd9\u79cd\u4ee5\u91cd\u529b\u4e3a\u4e3b\u7684\u60c5\u51b5\u4e0b\uff0c\u7ea658%\u7684H2\u53ef\u4ee5\u5728\u7eaf\u5ea6\u9ad8\u4e8e98%\uff08ISO\u89c4\u5b9a\u7684\u71c3\u70e7\u8981\u6c42\uff09\u7684\u60c5\u51b5\u4e0b\u56de\u91c7\u3002\u7136\u800c\uff0c\u5f53\u8003\u8651CO2\u6eb6\u89e3\u5ea6\u65f6\uff0cH2\u91c7\u51fa\u6548\u679c\u7565\u6709\u4e0b\u964d\u3002\u8fd9\u662f\u56e0\u4e3a\u5728\u6ce8\u5165H2\u671f\u95f4\uff0c\u6eb6\u89e3\u7684CO2\u4e5f\u4f1a\u9010\u6e10\u84b8\u53d1\uff0c\u8fd9\u4f1a\u5bfc\u81f4CO2\u548cH2\u6df7\u5408\u533a\u7684\u6269\u5927\u3002\u8fd9\u53cd\u8fc7\u6765\u53c8\u4f1a\u7f29\u77ed\u56de\u91c7\u751f\u4ea7\u671f\u95f4H2\u7eaf\u5ea6\u9ad8\uff08&gt;98%\uff09\u7684\u65f6\u95f4\u3002<\/h5>\n<h4>Abstract<\/h4>\n<p>The central objective of this study is to improve the understanding of flow behaviour during hydrogen (H<sub>2<\/sub>) storage in subsurface\u00a0<a href=\"https:\/\/www.sciencedirect.com\/topics\/engineering\/porous-medium\">porous media<\/a>, with a cushion gas of carbon dioxide (CO<sub>2<\/sub>). In this study, we investigate the interactions between various factors driving the flow behaviour, including the underlying permeability heterogeneity,\u00a0<a href=\"https:\/\/www.sciencedirect.com\/topics\/engineering\/viscous-instability\">viscous instability<\/a>, and the balance between the viscous and gravity forces. In particular, we study the impact of CO<sub>2<\/sub>\u00a0solubility in water on the level of H<sub>2<\/sub>\u00a0purity. This effect is demonstrated for the first time in the context of H<sub>2<\/sub>\u00a0storage. We have performed a range of 2D vertical cross-sectional simulations at the decametre scale with a very fine cell size (0.1\u00a0m) to capture the flow behaviour in detail. This is done since it is at this scale that much of the mixing between injected and native fluids occurs in physical porous media.<br \/>\nIt is found that CO<sub>2<\/sub>\u00a0solubility may have different (positive and negative) impacts on the H<sub>2<\/sub>\u00a0recovery performance (i.e., on the purity of the produced H<sub>2<\/sub>), depending on the flow regimes in the system. In the viscous dominated regime, the less viscous H<sub>2<\/sub>\u00a0may infiltrate and bypass the cushion gas of CO<sub>2<\/sub>\u00a0during the period of H<sub>2<\/sub>\u00a0injection. This leads to a quick and dramatic reduction in the H<sub>2<\/sub>\u00a0purity when back producing H<sub>2<\/sub>\u00a0due to the co-production of the previously bypassed CO<sub>2<\/sub>. Interestingly, the\u00a0<a href=\"https:\/\/www.sciencedirect.com\/topics\/engineering\/impurity-level\">impurity levels<\/a>\u00a0in the H<sub>2<\/sub>\u00a0are much less severe in the case when CO<sub>2<\/sub>\u00a0solubility in water is considered. This is because the bypassed CO<sub>2<\/sub>\u00a0will redissolve into the water surrounding the bypassed zones, which greatly retards the movement of CO<sub>2<\/sub>\u00a0towards the producer. In the gravity\u00a0<a href=\"https:\/\/www.sciencedirect.com\/topics\/engineering\/dominated-scenario\">dominated scenario<\/a>, H<sub>2<\/sub>\u00a0accumulates at the top of the model and displaces the underlying cushion gas in an almost piston-like fashion. Approximately 58% of H<sub>2<\/sub>\u00a0can be recovered at a purity level above 98% (combustion requirements by ISO) in this gravity-dominated case. However, when CO<sub>2<\/sub>\u00a0solubility is considered, the H<sub>2<\/sub>\u00a0recovery performance is slightly degraded. This is because the dissolved CO<sub>2<\/sub>\u00a0is also gradually vaporised during H<sub>2<\/sub>\u00a0injection, which leads to an expansion of mixing zone of CO<sub>2<\/sub>\u00a0and H<sub>2<\/sub>. This in turn reduces the period of high H<sub>2<\/sub>\u00a0purity level (&gt;98%) during back-production.<br \/>\n<img class=\"wp-image-56358\" src=\"http:\/\/learncmg.cn\/wp-content\/uploads\/2022\/10\/unnamed-file.jpeg\" alt=\"\u56fe\u8868, \u7011\u5e03\u56fe\n\u63cf\u8ff0\u5df2\u81ea\u52a8\u751f\u6210\" \/><br \/>\nFig.\u00a01.\u00a0The correlated heterogeneous permeability field used in this work.<br \/>\n<img class=\"wp-image-56359\" src=\"http:\/\/learncmg.cn\/wp-content\/uploads\/2022\/10\/unnamed-file-37.png\" alt=\"\u56fe\u5f62\u7528\u6237\u754c\u9762, \u6587\u672c, \u5e94\u7528\u7a0b\u5e8f, \u7535\u5b50\u90ae\u4ef6\n\u63cf\u8ff0\u5df2\u81ea\u52a8\u751f\u6210\" \/><br \/>\n<img class=\"wp-image-56360\" src=\"http:\/\/learncmg.cn\/wp-content\/uploads\/2022\/10\/unnamed-file-1.jpeg\" alt=\"\u65e5\u7a0b\u8868\n\u4e2d\u5ea6\u53ef\u4fe1\u5ea6\u63cf\u8ff0\u5df2\u81ea\u52a8\u751f\u6210\" \/><br \/>\nFig.\u00a010.\u00a0Gas saturations and mole fractions of H<sub>2<\/sub>\u00a0at the end of each cycle of the base model without CO<sub>2<\/sub>\u00a0solubility (Case E at the top) and the case with CO<sub>2<\/sub>\u00a0solubility (Case F at the bottom).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Numerical modelling of H2\u00a0storage with cushion gas<span class=\"more-link\"><a href=\"http:\/\/learncmg.cn\/?p=56356\">Continue Reading<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[159],"tags":[263,467,502],"_links":{"self":[{"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/posts\/56356"}],"collection":[{"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/learncmg.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=56356"}],"version-history":[{"count":0,"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/posts\/56356\/revisions"}],"wp:attachment":[{"href":"http:\/\/learncmg.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=56356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/learncmg.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=56356"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/learncmg.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=56356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}