天然砂体系氨基酸促进CO_(2)水合物生成研究  

Study on the formation of CO_(2) hydrate promoted by amino acids in natural sand system

作　　者：董庆启 张永涛 王飞 陈福林 Dong Qingqi;Zhang Yongtao;Wang Fei;Chen Fulin(College ofElectromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《可再生能源》2024年第6期719-724,共6页Renewable Energy Resources

基　　金：国家自然科学基金项目(21978142,52005277)。

摘　　要：在海底沉积层中通过生成水合物的方式封存CO_(2)是一项极具前景的技术。文章通过在可视反应釜中进行水合物生成试验,研究了天然砂体系中氨基酸促进CO_(2)水合物生成的演变过程。结果表明:在浓度为8 mmol/LL-甲硫氨酸溶液中,CO_(2)水合物的生成速率以及生成量较去离子水体系均有了明显提升;中等粒径天然砂对CO_(2)水合物生成促进效果最好,其内部生成了大量CO_(2)水合物,有效填充了天然砂之间的空隙;其次是小粒径天然砂,其内部也有较多的CO_(2)水合物生成;大粒径天然砂促进CO_(2)水合物生成的效果不明显,其内部未发现有明显的CO_(2)水合物生成,仅在反应釜内壁面观察到少量CO_(2)水合物。It is a promising technology to store CO_(2) by hydrate formation in seafloor sediments.In this paper,the evolution process of CO_(2) hydrate formation promoted by amino acids in natural sand system was studied by hydrate formation test in a visible reactor.The experimental results showed that the formation rate and amount of CO_(2) hydrates in 8 mmol/L L-methionine solution were significantly higher than those in deionized water system;The natural sand with medium particle size had the best promotion effect on the formation of CO_(2) hydrate,and a large amount of CO_(2) hydrates were generated in it,which effectively flled the gap between natural sands;Secondly,a lot of CO_(2) hydrates were also generated in small size natural sand;The effect of large particle size natural sand on promoting the formation of CO_(2) hydrate was not obvious,and no obvious CO_(2) hydrate formation was found inside,only a small amount of CO_(2) hydrates was observed on the inner wall of the reactor.

关 键 词：水合物 CO_(2) 海底封存 氨基酸 

分 类 号：TK6[动力工程及工程热物理—生物能]