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公开(公告)号：US09808756B2
公开(公告)日：2017-11-07
申请号：US15248537
申请日：2016-08-26
CPC分类号： B01D53/1493 , B01D53/025 , B01D53/46 , B01D53/80 , B01D53/82 , B01D2251/304 , B01D2251/604 , B01D2252/10 , B01D2253/1128 , B01D2255/20738 , B01D2257/00 , B01D2257/60 , B01D2257/93
摘要： A liquid suspension comprised of ferrous sulfide particles and method of using the same for the removal of selenium from industrial gas. Said liquid suspension may be (1) directly injected, or (2) coated onto or into a substrate and then injected into an industrial gas containing selenium to remove said selenium from the industrial gas stream in a dry scrubber system. Said liquid suspension of ferrous sulfide particles may also be used to remove selenium contained in industrial gases in a wet scrubber system.
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公开(公告)号：US20170144895A1
公开(公告)日：2017-05-25
申请号：US15424417
申请日：2017-02-03
CPC分类号： C02F1/281 , B09C1/002 , B09C1/02 , B09C1/08 , B09C2101/00 , C02F1/5245 , C02F2101/20 , C02F2103/06
摘要： A method of reducing the mobility of metal contaminates in mediums such as soil, groundwater, sludge, etc. that involves contacting the mediums with a reagent that is a ferrous sulfide suspension that contains at least FeS and Al(OH)3. The reagent is produced by reacting a solution that contains at least NaAlO2 and NaOH with a solution that contains FeCl2, HCl and water to form a reaction mixture that contains Fe2+, Cl−, Na+, Al(OH)3 and H2O; and adding NaHS to the reaction mixture. The mobility of the metal contaminates is reduce by adsorption of the metal contaminates in the medium onto the surface of ferrous sulfide or Al(OH)3 in the ferrous sulfide suspension; adsorption of the metal contaminates in the medium onto iron (hydr)-oxides formed in the suspension; and precipitation of the metal contaminates.
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3.发明授权公开(公告)号：US09073008B2
公开(公告)日：2015-07-07
申请号：US14200661
申请日：2014-03-07
CPC分类号： B01D53/64 , B01D53/80 , B01D2251/304 , B01D2253/1128 , B01D2257/602 , B01J20/0229 , B01J20/0285
摘要： A wet gas scrubber liquor and method of using the same to remove mercury from flue gases. The wet gas scrubber liquid is an alkaline liquid suspension of ferrous sulfide particles that can be prepared by combining together a ferrous ion source such as ferrous chloride, a sulfide ion source such as sodium hydrosulfide and an alkalinity source such as sodium hydroxide. When used to scrub flue gases to remove mercury from flue gases the mercury reacts with said alkaline liquid suspension of ferrous sulfide particles and can be removed by at least one of: i) adsorption onto said ferrous sulfide particles; ii) adsorption onto iron (hydr)-oxides that form in said alkaline liquid suspension of ferrous sulfide particles; and iii) absorption by reacting with sulfur formed in alkaline liquid suspension of ferrous sulfide particles and forming mercuric sulfide as a precipitate.
摘要翻译： 一种湿气洗涤液及其使用方法，从烟道气中除去汞。 湿气洗涤器液体是硫化亚铁颗粒的碱性液体悬浮液，其可以通过将亚铁离子源如氯化亚铁，硫化氢离子源如氢硫化钠和碱性源如氢氧化钠组合在一起来制备。 当用于洗涤废气以从烟道气中去除汞时，汞与硫化亚铁颗粒的所述碱性液体悬浮液反应，并且可以通过以下至少一种来除去：i）吸附到所述硫化亚铁颗粒上; ii）吸附在硫化亚铁颗粒的所述碱性液体悬浮液中形成的铁（hydr） - 氧化物; 和iii）通过与在硫化亚铁颗粒的碱性液体悬浮液中形成的硫反应形成硫化汞作为沉淀而吸收。
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4.发明授权公开(公告)号：US10507347B2
公开(公告)日：2019-12-17
申请号：US15708428
申请日：2017-09-19
IPC分类号： A62D3/37 , B09B3/00 , A62D101/43
摘要： A method of treating, stabilizing, precipitating, or otherwise removing heavy metal ions contained in a contaminated media, which method includes: providing a sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance; contacting said contaminated media containing heavy metal ions with the sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance; and allowing the contaminated media containing the heavy metal ions to react with said sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance, such that the contaminated media containing heavy metal ions form single or mixed metal-sulfide precipitates or co-precipitates.
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5.发明申请公开(公告)号：US20180078805A1
公开(公告)日：2018-03-22
申请号：US15708428
申请日：2017-09-19
CPC分类号： A62D3/37 , A62D3/33 , A62D2101/24 , A62D2101/43 , B09B3/00 , B09B3/0025 , B09B5/00 , B09C1/08
摘要： A method of treating, stabilizing, precipitating, or otherwise removing heavy metal ions contained in a contaminated media, which method includes: providing a sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance; contacting said contaminated media containing heavy metal ions with the sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance; and allowing the contaminated media containing the heavy metal ions to react with said sodium-iron-sulfide mineral or crystalline phase, either alone or in combination with a pH adjusting substance, such that the contaminated media containing heavy metal ions form single or mixed metal-sulfide precipitates or co-precipitates.
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6.发明授权公开(公告)号：US09034285B1
公开(公告)日：2015-05-19
申请号：US14193973
申请日：2014-02-28
CPC分类号： B01D53/64 , B01D2257/602 , C01F7/14 , C01G13/00 , C01G49/12 , C01P2002/77
摘要： A ferrous sulfide suspension that includes at least FeSm and Al(OH)3 and which can be used to reduce mercury emissions in flue gases. Through a combination of complex chemical reactions, precipitation, co-precipitation, and surface adsorption the ferrous sulfide suspension of the present invention effectively removes mercury from gaseous streams while concurrently preventing mercury re-emission.
摘要翻译： 包含至少FeSm和Al（OH）3的硫化亚铁悬浮液，可用于减少烟道气中的汞排放。 通过复杂化学反应，沉淀，共沉淀和表面吸附的组合，本发明的硫化亚铁悬浮液有效地从气流中除去汞，同时防止汞再发射。
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