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1. 发明申请

US20150145315A1 METHOD AND DEVICE FOR BUILDING UNDERGROUND STOREHOUSE BY DISSOLVING LIMESTONE WITH CARBON DIOXIDE 有权
标题翻译：通过用二氧化碳溶解石灰石来建造地下仓库的方法和装置
公开(公告)号：US20150145315A1
公开(公告)日：2015-05-28
申请号：US14351138
申请日：2012-04-26
申请人： Heping Xie , Yufei Wang , Jianfeng Liu , Lingzhi Xie , Ru Zhang
发明人： Heping Xie , Yufei Wang , Jianfeng Liu , Lingzhi Xie , Ru Zhang
IPC分类号： E21D13/00 , C09K8/38
CPC分类号： E21D13/00 , B65G5/00 , C09K8/38 , E21B43/28 , E21B43/40 , Y02C10/14
摘要： A method for building an underground storehouse by dissolving limestone with carbon dioxide, the method comprising the following steps: a.) drilling two wells extending from the ground surface (1) to a limestone layer (2), building a channel (5) allowing the two wells to communicate, and installing casing pipes (3, 4) respectively in the two wells; b.) introducing CO2 gas having at least 1 MPa of pressure into a CO2 absorbing solution having the same pressure to form a CO2 solution, flowing the CO2 solution into underground via the casing pipe (3) to react with the limestone to form a calcium bicarbonate solution, forming a cavern in the meanwhile, and discharging the calcium bicarbonate solution via the other casing pipe (4); c.) decompressing the discharged calcium bicarbonate solution to decompose the calcium bicarbonate contained in the solution into CO2, water and calcium carbonate, and recycling the separated CO2 absorption solution and the CO2; repeating steps b.) and c.) until a cavern meeting design requirements is formed, and discharging the solution from the cavern to form the underground storehouse (6). Also disclosed is a device for building an underground storehouse by dissolving limestone with carbon dioxide, the device comprising a CO2 storage tank (7), an absorption tower (8), a crystallizer (11), a pressure relief valve (9), a gas-liquid separator (10), a vacuum pump (13), a buffer (14) and booster pumps (12, 15, 16).
摘要翻译：一种通过用二氧化碳溶解石灰石来建造地下仓库的方法，所述方法包括以下步骤：a）钻出从地面（1）延伸到石灰岩层（2）的两口井，建立通道（5），允许两口井沟通，分别在两口井内安装套管（3,4）; b。）将具有至少1MPa压力的CO 2气体引入具有相同压力的CO 2吸收溶液中以形成CO 2溶液，通过套管（3）将CO 2溶液流入地下以与石灰石反应形成钙碳酸氢盐溶液，同时形成一个洞穴，并通过另一个套管（4）排出碳酸氢钙溶液; c）减压排出的碳酸氢钙溶液，将溶液中含有的碳酸氢钙分解成CO 2，水和碳酸钙，并循环分离的CO 2吸收溶液和CO 2; 重复步骤b。）和c。），直到形成满足设计要求的洞穴，并将溶液从洞穴排出以形成地下仓库（6）。还公开了一种通过将石灰石与二氧化碳混合来建造地下仓库的装置，该装置包括二氧化碳储存罐（7），吸收塔（8），结晶器（11），减压阀（9），气液分离器（10），真空泵（13），缓冲器（14）和增压泵（12,15,16）。

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