Geothermal hot water recovery process and system专利检索-地热循环地热能专利检索查询-专利查询网

Geothermal hot water recovery process and system

阅读：966发布：2021-12-13

专利汇可以提供Geothermal hot water recovery process and system专利检索，专利查询，专利分析的服务。并且An improved process and system for recovering high temperature hot water from a geothermal supply. A well casing assembly is sunk to position an apertured end portion of a casing in proximity to an underground hot water supply with an apertured end portion of a centrally disposed conduit within the casing adjacent the apertured casing end. By reducing the pressure at the well head, flashing of the hot water to steam occurs to elevate a two phase mixture of steam and hot water through the casing assembly. Such flashing is accompanied by the evolution of substantially non-condensible gases, including carbon dioxide. Such gases are separated with the steam from the elevated hot water, the latter being withdrawn from the system for its intended use, such as the generation of electric power. The separated steam and gases are heat exchanged to condense the steam and to withdraw useful heat from the gases, following which the gases are compressed and recycled into contact with the underground hot water supply to assist in elevating additional hot water. The carbon dioxide containing gases are effective in countering the problems normally created when geothermal hot water is allowed to flash to steam, namely the formation of system clogging deposits, of which calcium carbonate and magnesium hydroxide are typical, within the well and related apparatus. The presence of carbon dioxide in the recycled gases during the steam flashing maintains chemical equilibrium in the system to prevent formation of such deposits. Thus, without utilizing mechanical or other pumping devices within the well, recovery of a substantially constant stream of geothermal hot water from a deep underground well may be effected without attendant precipitation of clogging chemical compounds commonly encountered when geothermal hot water is elevated utilizing a steam flashing procedure.，下面是Geothermal hot water recovery process and system专利的具体信息内容。

权利要求

1. A process of obtaining high temperature geothermal hot water, such as hot water at a temperature of above 300*F., as opposed to oil and like minerals, from a deep underground well without utilizing a moving mechanical or other pumping device within said well and without requiring gas-lift techniques, comprising A. positioning a well casing assembly, comprising a well casing and a conduit within said casing, in the ground to a depth sufficient to position an apertured end portion of said casing in proximity to an underground hot water supply and with an apertured end portion of said conduit adjacent said casing end portion, B. inducing flashing to steam of at least some of said hot water entering said casing end portion, C. recovering an essentially non-condensible gas, including carbon dioxide, from said flashed hot water, and D. recycling said recovered gas through said well casing assembly to bring said gas into contact with additional hot water entering said casing assembly through said apertured end portion of said casing to counteract and obviate formation of deposits which tend to clog said well casing assembly by maintaining partial pressure on the recovered carbon dioxide bearing gas under all operating conditions.

2. The process of claim 1 in which said gas is recycled through said well casing assembly through said conduit so that said hot water passes into and is elevated through the space between said conduit and said surrounding well casing.

3. The process of claim 1 in which said gas is recycled through the space between said conduit and said surrounding well casing so that said hot water passes into and is elevated through said conduit within said casing.

4. The process of obtaining high temperature geothermal hot water, such as hot water at a temperature of above 300*F., as opposed to oil and like minerals, from a deep underground well without attendant precipitation of chemical compounds which would clog the well system and associated equipment and without utilizing a mechanical or other pumping device within said well and without requiring gas-lift techniques comprising A. positioning a well casing assembly, comprising a well casing and a conduit within said casing and surrounded thereby, in the ground to a depth sufficient to position an apertured end portion of said casing in proximity to an underground hot water supply and with an apertured end portion of said conduit adjacent said casing end portion, B. reducing the pressure at the well head to induce flashing to steam of at least some of said hot water entering said casing assembly,

5. The process of claim 4 which includes E. collecting and withdrawing any chemical compounds at the well head which may have formed during initial start-up of the process prior to recycling of said evolved CO2 carrying gases into said casing assembly, and F. continuing compressing and recycling said evolved gases through said casing assembly in conjunction with separation of steam and said gases from hot water elevated with said flashed steam and recycled gases to effect a substantially continuous flow of hot water from said well head without formation and build-up of said clogging chemical compounds in conjunction therewith.

6. The process of claim 4 which further includes G. heat exchanging said evolved gases and steam following separation thereof from said hot water adjacent said well head to condense said steam and to extract useful heat while cooling said gases, and H. separating said condensed steam from said cooled evolved gases prior to compressing the same for recycling through said casing assembly.

7. The process of claim 4 in which said gas is recycled through said well casing assembly through said conduit so that said hot water passes into and is elevated through the space between said conduit and said surrounding well casing.

8. The process of claim 4 in which said gas is recycled through the space between said conduit and said surrounding well casing so that said hot water passes into and is elevated through said conduit within said casing.

说明书全文

标题	发布/更新时间	阅读量
采用多分支径向水平井的地热资源开发系统及其方法	2020-05-11	6
一种相变储能套管式地热换热器	2020-05-12	775
一种循环水泵节能云控制系统	2020-05-11	234
路面层结构及路面旧料循环使用方法	2020-05-12	386
固流耦合协同降温的矿井地热开采利用装置及方法	2020-05-12	832
一种煤田矿井发电与换热系统	2020-05-13	94
太阳能地热盘管加热系统	2020-05-11	409
一种低能耗污泥干燥和好氧发酵装置	2020-05-08	362
一种自控式多功能深层地热供热系统	2020-05-12	213
一种模拟地热发电装置测试的电力自循环系统	2020-05-12	788

Geothermal hot water recovery process and system

该功能需要专业版企业版VIP权限，您可以：