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公开(公告)号：US4388194A
公开(公告)日：1983-06-14
申请号：US299290
申请日：1981-09-04
申请人： William A. Hills
发明人： William A. Hills
摘要： A method of preventing sludge deposition in the treatment of geothermal steam condensate with iron catalyzed/hydrogen peroxide by carrying out the treatment in the presence of an inorganic polyphosphate.
摘要翻译： 一种通过在无机多磷酸盐存在下进行处理来防止用铁催化/过氧化氢处理地热蒸汽冷凝物中的污泥沉积的方法。
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公开(公告)号：US4224151A
公开(公告)日：1980-09-23
申请号：US968480
申请日：1978-12-11
申请人： John W. Jost
发明人： John W. Jost
CPC分类号： C02F1/72
摘要： A method for preventing the deposition of sulfide and/or sulfate scale during the production of a hot two-phase geothermal fluid which contains hydrogen sulfide, barium heavy and/or transition metals, and at least a critical minimum amount of calcium in solution. Gaseous oxygen is injected into the geothermal fluid at a critical rate to selectively oxidize the hydrogen sulfide to intermediate sulfide oxidation products, such as thiosulfates. Thereafter the geothermal fluid is separated into gaseous and liquid phases. Where iron is present in the geothermal fluid, the degree of turbulence induced during the oxidation step is selectively controlled in order to prevent the deposition of iron pyrites.
摘要翻译： 一种用于在生产含有硫化氢，钡重和/或过渡金属的热的两相地热流体和至少在溶液中至少临界的最小量的钙的过程中防止硫化物和/或硫酸盐垢沉积的方法。 将气态氧以临界速率注入地热流体中，以选择性地将硫化氢氧化成中间硫化物氧化产物，例如硫代硫酸盐。 此后，将地热液分离成气相和液相。 在地热流体中存在铁的情况下，选择性地控制在氧化步骤期间引起的湍流程度，以防止铁黄铁矿的沉积。
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公开(公告)号：US4059513A
公开(公告)日：1977-11-22
申请号：US770826
申请日：1977-02-22
申请人： Karel V. Zadera
发明人： Karel V. Zadera
摘要： High sulfate content water is treated in a multistage process to remove sulfate and hardness. Sulfate concentration is reduced in the first stage of the process by addition of calcium hydroxide. Calcium concentration is reduced in the second stage of the process by reaction of carbon dioxide or bicarbonate and calcium and hydroxide ions from the first stage of the process, forming insoluble calcium carbonate.
摘要翻译： 高硫酸盐含量的水以多步法处理以除去硫酸盐和硬度。 通过加入氢氧化钙，在该方法的第一阶段硫酸盐浓度降低。 在该过程的第二阶段，通过二氧化碳或碳酸氢盐与钙和氢氧根离子从该方法的第一阶段的反应而降低钙浓度，形成不溶性碳酸钙。
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4.发明授权Process of inhibiting scale formation on walls of structures containing an aqueous system 失效在含有水性体系的结构的壁上抑制结垢的方法
公开(公告)号：US3879288A
公开(公告)日：1975-04-22
申请号：US31463072
申请日：1972-12-13
摘要： Formation of hard adherent scale deposits of insoluble salts particularly carbonates and sulfates of metals such as calcium or other alkaline earth metals, and/or iron are inhibited, controlled or prevented on, or removed from (a) the walls of evaporators, cooling towers, heat exchangers, boilers and devices where a thermal gradient exists or areas where catalytically active sites induce scale formation in aqueous systems by (b) from about 2/10 to 2,000 parts per million of an aliphatic copolymer of monovinyl compound and a vinyl sulfonate having (c) from about 25 to 75 mol percent of the sulfonate and (d) a molecular weight of about 1,000 to 25,000. The copolymer is useful alone, and in cooperation with corrosion inhibitors, other sequestrants and chelating agents.
摘要翻译： 特别是诸如钙或其它碱土金属和/或铁的金属的碳酸盐和硫酸盐的硬粘附垢沉积物的形成可以在（a）蒸发器，冷却塔等的壁上被抑制，控制或防止， 热交换器，锅炉和存在热梯度的装置或催化活性位点通过（b）约2-10至2,000ppm的单乙烯基化合物和乙烯基磺酸酯的脂族共聚物， c）约25至75mol％的磺酸盐和（d）约1,000至25,000的分子量。 该共聚物可单独使用，并且与腐蚀抑制剂，其它螯合剂和螯合剂协同使用。
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公开(公告)号：US3794591A
公开(公告)日：1974-02-26
申请号：US3794591D
申请日：1972-02-08
申请人： EASTMAN KODAK CO
发明人： BROWN J
CPC分类号： G03C5/3053 , C02F5/145
摘要： THE INCORPORATION OF SMALL AMOUNTS OF LITHIUM ION INTO A SOLUTION OF A HEAVY METAL SEQUESTERING AGENT OF THE FORMULA:
HO-P(=O)(-OH)-C(-R)(-OH)-P(=O)(-OH)2
WHEREIN R IS A LOWER ALKYL RADICAL HAVING FROM 1 TO 5 CARBON ATOMS, INHIBITS THE FORMATION OF THE WHITE PRECIPITATE CHARACTERISTICALLY PRODUCED WHEN SEQUESTRANTS OF THIS TYPE ARE USED TO SEQUESTER IONS OF HEAVY METALS SUCH AS CALCIUM. ALKALI METAL, AMMONIUM AND ETHANOLAMINE SALTS OF COMPOUNDS OF THE ABOVE FORMULA AND MONO AND DIALKYL ESTERS THEREOF WITH METHANOL, ETHANOL, PROPANOL AND BUTANOL ALSO PROVIDE USEFUL SEQUESTERING AGENTS.-
6.发明授权Solid sequestering agent comprising a borate and sodium beta-glucoheptonate 失效包含硼酸盐和β-葡萄糖苷酸钠的固体序列试剂
公开(公告)号：US3539463A
公开(公告)日：1970-11-10
申请号：US3539463D
申请日：1967-09-07
申请人： GRACE W R & CO
发明人： HARPER JAMES L , THUNBERG JON C
CPC分类号： C07F5/04 , C07C59/105 , C23F1/36
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公开(公告)号：US3515211A
公开(公告)日：1970-06-02
申请号：US3515211D
申请日：1968-08-19
申请人： SHELL OIL CO
CPC分类号： C02F5/083 , Y10S166/902
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公开(公告)号：US3507795A
公开(公告)日：1970-04-21
申请号：US3507795D
申请日：1966-12-09
申请人： AMCHEM PROD
发明人： GARDNER GEORGE S
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公开(公告)号：US4089796A
公开(公告)日：1978-05-16
申请号：US695345
申请日：1976-06-14
申请人： Arthur Harris , John Burrows , Thomas Ivor Jones
发明人： Arthur Harris , John Burrows , Thomas Ivor Jones
摘要： Compositions for inhibiting corrosion and scale formation in aqueous systems which consist essentially of from 20 to 97.5% by weight of total composition of (a) a combination of zinc and hydrolyzed polymaleic anhydride and (b) 2.5 to 80% by weight of total composition of a corrosion inhibitor, particularly benzotriazole.
摘要翻译： 用于抑制水系统中的腐蚀和结垢形成的组合物，其基本上由总组合物的20至97.5重量％组成（a）锌和水解聚马来酸酐的组合和（b）2.5至80重量％的总组合物 腐蚀抑制剂，特别是苯并三唑。
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公开(公告)号：US3969255A
公开(公告)日：1976-07-13
申请号：US456468
申请日：1974-04-01
CPC分类号： C23G1/06
摘要： A pipe cleaning composition containing hydrochloric acid, furfural, dialkylthiourea, benzyl thiocyanate and water has a reduced tendency to attack steel or copper pipe.
摘要翻译： 包含盐酸，糠醛，二烷基硫脲，硫氰酸苄酯和水的管道清洁组合物具有降低钢或铜管侵蚀的倾向。
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