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公开(公告)号：US4357802A
公开(公告)日：1982-11-09
申请号：US132407
申请日：1980-03-21
CPC分类号： F03G7/04 , F24J3/085 , Y02E10/14 , Y02P20/123
摘要： Process for recovery of energy from geothermal fluids such as geothermal brine in a geothermal formation by injecting a water immiscible working fluid, preferably organic, typically a hydrocarbon, e.g. isobutane, into the geothermal formation containing a geothermal fluid such as hot brine, wherein the hydrocarbon working fluid is heated by direct heat exchange contact with the hot geothermal fluid in the formation, and employing the hot working fluid to drive a heat engine or turbine to produce work or electrical energy or to provide heat energy to a chemical process (e.g., alcohol manufacture). The cooled working fluid discharged from the turbine is reinjected into the geothermal formation. The working fluid preferably has a density which changes substantially with temperature to provide a substantial pressure difference for causing flow of heated working fluid up the production well. The density difference can be due to phase transfer from liquid to gas.
摘要翻译： 通过注入与水不混溶的工作流体，优选有机的，通常为烃，例如烃的方法，从地热流体如地热盐水中回收能量的方法。 异丁烷进入包含地热液体如热盐水的地热层，其中烃工作流体通过与地层中的热地热流体的直接热交换接触加热，并且使用热工作流体驱动热机或涡轮机 产生工作或电能或为化学过程（例如酒精制造）提供热能。 从涡轮机排出的冷却的工作流体被重新注入地热层。 工作流体优选地具有随温度基本上变化的密度，以提供显着的压力差，用于使加热的工作流体在生产井上流动。 密度差可能是由于从液体到气体的相转移。
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公开(公告)号：US4276748A
公开(公告)日：1981-07-07
申请号：US83112
申请日：1979-10-05
摘要： Process and system for recovery of energy from geothermal brines and other hot water sources, by direct contact heat exchange between the brine or hot water, and an immiscible working fluid, e.g. a hydrocarbon such as isobutane, in a heat exchange column, the brine or hot water therein flowing countercurrent to the flow of the working fluid. The column can be operated at subcritical, critical or above the critical pressure of the working fluid. Preferably, the column is provided with a plurality of sieve plates, and the heat exchange process and column, e.g. with respect to the design of such plates, number of plates employed, spacing between plates, area thereof, column diameter, and the like, are designed to achieve maximum throughput of brine or hot water and reduction in temperature differential at the respective stages or plates between the brine or hot water and the working fluid, and so minimize lost work and maximize efficiency, and minimize scale deposition from hot water containing fluid including salts, such as brine. Maximum throughput approximates minimum cost of electricity which can be produced by conversion of the recovered thermal energy to electrical energy.
摘要翻译： 通过盐水或热水之间的直接接触热交换，以及不混溶的工作流体，例如水和/或其他热水源的回收能量的方法和系统。 烃类如异丁烷，在热交换塔中，其中的盐水或热水与工作流体的流动逆流。 该柱可以在亚临界，临界或高于工作流体的临界压力下运行。 优选地，柱设置有多个筛板，并且热交换过程和塔，例如， 对于这种板的设计，所使用的板数，板之间的间距，面积，柱直径等被设计成实现盐水或热水的最大产量并降低各阶段或板的温度差 在盐水或热水和工作流体之间，并且因此最小化损失的工作并最大限度地提高效率，并且使包含盐（例如盐水）的热水含水流体的水垢沉积最小化。 最大吞吐量近似于通过将回收的热能转换为电能而产生的最小电力成本。
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公开(公告)号：US4167099A
公开(公告)日：1979-09-11
申请号：US873264
申请日：1978-01-30
摘要： Recovery of energy from geothermal brines and other hot water sources by direct contact heat exchange with a working fluid, such as a hydrocarbon working fluid, e.g. isobutane. The process and system consists of a plurality of stages, each stage including mixing and settling units. In the first stage, hot brine and arm working fluid are intimately mixed and passed into a settler wherein the brine settles to the bottom of the settler and the hot working fluid rises to the top. The hot working fluid is passed to a heat engine or turbine to produce work and the working fluid is then recycled back into the system. The system is comprised of a series of stages each containing a settler and mixer, and wherein the working fluid and the brine flow in a countercurrent manner through the stages to recover the heat from the brine in increments and raise the temperature of the working fluid in increments.
摘要翻译： {PG，1通过与工作流体例如烃工作流体的直接接触热交换来回收来自地热盐水和其它热水源的能量，例如， 异丁烷 该过程和系统由多个阶段组成，每个阶段包括混合和沉降单元。 在第一阶段，将热盐水和臂工作流体紧密地混合并进入沉淀器，其中盐水沉降到沉降器的底部，热的工作流体升至顶部。 热工作流体被传递到热机或涡轮机以产生作业，然后将工作流体再循环回到系统中。 该系统包括一系列阶段，每个阶段均包含沉降器和混合器，并且其中工作流体和盐水以逆流的方式流过该阶段以递增地从盐水中回收热量，并将工作流体的温度升高 增量。
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