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公开(公告)号：US5364439A
公开(公告)日：1994-11-15
申请号：US875344
申请日：1992-04-29
申请人： Darrell L. Gallup , Kevin R. Kitz , Manuel E. Obando , Donald M. Fenton , Paul A. Peaden , Dennis L. Saunders , Brian J. Kelly
发明人： Darrell L. Gallup , Kevin R. Kitz , Manuel E. Obando , Donald M. Fenton , Paul A. Peaden , Dennis L. Saunders , Brian J. Kelly
CPC分类号： B01D53/002 , B01D53/52 , C05C3/00 , F03G7/04 , B01D2257/304 , B01D2257/40 , Y02E10/10 , Y10S423/19
摘要： An integrated system of non-condensable gas (NCG) and condensate treatment allows geothermal power plant condensate and non-condensable gas effluent streams containing H.sub.2 S and ammonia to be commercially useful for more than for cooling tower makeup. In the preferred embodiment, the pH of the condensate is increased by adding ammonia and the pH increased stream is contacted with NCG to scrub and oxidize the H.sub.2 S constituent of the NCG. By reducing the pH, the condensate or aqueous stream mixture can also be used to further transfer ammonia from the non-condensable gas stream to the aqueous stream, enriching the stream for use as a fertilizer/irrigation water mixture. If other commercial uses are desired for the mixture and/or oxidized NCG streams, they can be resin treated to remove the ammonia constituent. With the ammonia and H.sub.2 S constituents decreased, the condensate may be used for a variety of applications and the NCG can be injected or used as a commercial feed stream. Rejuvenation of the resin may be accomplished by recycling and purging with the treated NCG. The effluent purge gas may be used to further enrich irrigation waters. A nearly total elimination of all emissions from the geothermal power is thereby made possible.
摘要翻译： 不可冷凝气体（NCG）和冷凝水处理的集成系统允许地热发电厂的冷凝物和含有H 2 S和氨的不可冷凝的气体流出物流在商业上可用于冷却塔组合。 在优选的实施方案中，通过加入氨来增加冷凝物的pH，并且使pH增加的流与NCG接触以洗涤和氧化NCG的H 2 S成分。 通过降低pH，还可以使用冷凝物或含水物流混合物来进一步将氨从不可冷凝的气流转移到含水物流中，从而富集该流以用作肥料/灌溉水混合物。 如果混合物和/或氧化的NCG流需要其它商业用途，则它们可以进行树脂处理以除去氨成分。 随着氨和H 2 S成分的降低，冷凝物可用于各种应用，NCG可以注入或用作商业进料流。 树脂的再生可以通过用经处理的NCG进行再循环和吹扫来实现。 废水净化气体可用于进一步丰富灌溉水。 因此，几乎完全消除了地热能源的所有排放。
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公开(公告)号：US5256301A
公开(公告)日：1993-10-26
申请号：US861529
申请日：1992-03-31
摘要： Soluble salts are prevented from precipitating from a brine concentrate produced from the flashing a geothermal brine by diluting the brine concentrate with preconditioned condensate. The pH of the condensate is first adjusted to within two pH units of brine concentrate. Then concentration of sulfide ion is reduced by oxidizing sulfide to sulfate by exposure to air for a period of time sufficient to oxidize a substantial portion of the sulfide, but short enough to prevent a substantial concentration of oxygen from dissolving in the condensate. The preconditioned condensate is then mixed with the brine concentrate to form an injection stream. The injection stream is then injected into the earth.
摘要翻译： 通过用预处理的冷凝物稀释盐水浓缩物，可以防止可溶性盐从闪蒸的地热盐水中产生的盐水浓缩物沉淀。 首先将冷凝物的pH调节至盐水浓缩物的两个pH单位内。 然后通过暴露于空气中将硫化物氧化成硫酸盐足以氧化大部分硫化物的时间，但足够短以防止氧气在冷凝物中溶解大量，从而降低了硫化物离子的浓度。 然后将预处理的冷凝物与盐水浓缩物混合以形成注射流。 然后将注射流注入地球。
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公开(公告)号：US5085782A
公开(公告)日：1992-02-04
申请号：US635478
申请日：1990-12-28
CPC分类号： B01D5/0093 , B01D53/526 , Y02P70/34
摘要： In the processing of a geothermal brine and the recovery of heat therefrom, there are produced a non-condensable gas stream containing hydrogen sulfide and carbon dioxide and a liquid stream comprising a condensate of steam derived from the brine. In accordance with the present invention, the noncondensable gases are introduced into the condensate in the presence of an oxidizing agent to form a gas-liquid mixture. The mixture is maintained at an alkaline pH for a time sufficient for a substantial portion of the hydrogen sulfide to be oxidized. Thereafter, the mixture is introduced into a gas-liquid separation zone for separate recovery of a gas stream comprising a major amount of carbon dioxide and substantially free of hydrogen sulfide. Advantageously, the recovered gas stream is recycled to the geothermal brine process to reduce the pH of the brine and its scaling potential.
摘要翻译： 在处理地热卤水并从其中回收热量时，产生了含有硫化氢和二氧化碳的不可冷凝气流以及包含来自卤水的蒸汽冷凝物的液体流。 根据本发明，在氧化剂存在下，将不凝气体引入冷凝物中以形成气 - 液混合物。 将混合物在碱性pH下保持足以使大部分硫化氢氧化的时间。 此后，将混合物引入气液分离区，以分离回收包含大量二氧化碳并基本上不含硫化氢的气流。 有利地，将回收的气流再循环到地热卤水方法中以降低盐水的pH值及其结垢潜能。
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