公开(公告)号：US20040026982A1

公开(公告)日：2004-02-12

申请号：US10622162

申请日：2003-07-15

申请人： American Soda, LLP

发明人： Max E. Ramey ,  John S. McEwan ,  Kevin L. Green ,  Charles L. Yates ,  Allan L. Turner ,  Michael A. Rockendal ,  Irvin P. Nielsen ,  Michael P. Hardy ,  Rex Goodrich

IPC分类号： E21B001/00

CPC分类号： C01D7/12 ,  C01D7/126 ,  C01D7/35 ,  E21B43/281 ,  E21B43/283

摘要： A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of at least 250null F. into the formation, dissolving nahcolite in the hot water to form a production solution and recovering the production solution. The invention also includes the processing of the production solution to provide sodium carbonate and, optionally, sodium bicarbonate, comprising: decomposing the sodium bicarbonate portion of the hot aqueous production solution to form a hot aqueous solution of sodium carbonate; evaporating water from the hot aqueous solution comprising sodium carbonate to form a concentrated solution of sodium carbonate; producing sodium carbonate monohydrate from the concentrated solution of sodium carbonate by crystallization; and dewatering and calcining the sodium carbonate monohydrate to produce anhydrous sodium carbonate.

摘要翻译： 一种溶液开采砂浆的方法，该方法能够从属于黑藻土的地质层中提取砂浆，包括在至少250°F的温度下将高压水（其可以包括再循环的碳酸氢二水溶液）注入到地层中，溶解 nahcolite在热水中形成生产解决方案并回收生产解决方案。 本发明还包括处理生产溶液以提供碳酸钠和任选的碳酸氢钠，其包括：分解热水生产溶液的碳酸氢钠部分以形成热的碳酸钠水溶液; 从包含碳酸钠的热水溶液中蒸发水以形成碳酸钠的浓缩溶液; 通过结晶从碳酸钠浓缩液中生成碳酸钠一水合物; 并对碳酸钠一水合物进行脱水和煅烧以制备无水碳酸钠。