Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale
    1.
    发明授权
    Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale 失效
    碳酸钠和碳酸氢钠生产从黑藻油页岩

    公开(公告)号:US06854809B1

    公开(公告)日:2005-02-15

    申请号:US10619397

    申请日:2003-07-14

    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 250° 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。

    Sodium carbonate and sodium bicarbonate production
    2.
    发明授权
    Sodium carbonate and sodium bicarbonate production 失效
    生产碳酸钠和碳酸氢钠

    公开(公告)号:US07410627B2

    公开(公告)日:2008-08-12

    申请号:US11340444

    申请日:2006-01-25

    IPC分类号: C01B7/00

    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 250° 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。

    Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale
    4.
    发明授权
    Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale 失效
    碳酸钠和碳酸氢钠生产从黑藻油页岩

    公开(公告)号:US06609761B1

    公开(公告)日:2003-08-26

    申请号:US09480092

    申请日:2000-01-10

    IPC分类号: F21C4116

    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 250° 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。

    METHOD INCLUDING DOWNHOLE FLOW CONTROL IN SOLUTION MINING

    公开(公告)号:US20220195858A1

    公开(公告)日:2022-06-23

    申请号:US17127422

    申请日:2020-12-18

    摘要: A method for controlling downhole fluid flow in multi-lateral solution mining may include forming a solution mining production well with a plurality of horizontal laterals drilled from a surface to connect and intersect with a horizontal or vertical injection well; and installing a downhole flow control device at the intersection of the horizontal injection well and each of the horizontal laterals. The downhole flow control device may be capable of being adjusted to distribute injection flow as desired through the horizontal laterals. The downhole flow control device may be a sliding sleeve capable of ranging from fully open to full closed to control flow from the injection well into multiple locations within the mineralized zone.

    Apparatus for recovery of sulfur
    8.
    发明授权
    Apparatus for recovery of sulfur 失效
    用于回收硫的装置

    公开(公告)号:US4869555A

    公开(公告)日:1989-09-26

    申请号:US141229

    申请日:1988-01-06

    摘要: Elemental sulfur in substantially pure form is recovered from an underground sulfur formation which has been previously been mined by the Frasch process by injection of hot water into the underground formation to melt at least a portion of the sulfur, removing the resulting mixture of sulfur and hot water to the surface, separating the mixture of sulfur and hot water, recovering the sulfur as molten sulfur, and recycling the water to the underground formation. In alternatives, the water may be treated with additives to prevent corrosion, and scale and to reduce hardness and enhance separation of sulfur and water. The process is practiced using a conventional Frasch sulfur well in combination with a bleed water well and/or injection well. Also provided is a method and apparatus for separating molten sulfur from a mixture of molten sulfur and water.

    摘要翻译: 基本上纯净的形式的元素硫是从地下硫形成中回收的,地下硫层是先前通过弗拉施工艺开采的,通过将热水注入地下地层以熔化至少一部分硫,除去硫和热的混合物 水到表面,分离硫和热水的混合物,回收硫作为熔融硫,并将水再循环到地下地层。 在替代方案中,水可以用添加剂处理以防止腐蚀,并且缩放并降低硬度并增强硫和水的分离。 该方法使用常规的弗拉施硫磺井与排放水井和/或注入井结合来实施。 还提供了用于从熔融硫和水的混合物中分离熔融硫的方法和装置。