专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4424126A Apparatus for removing heavy metals from aqueous liquids 失效
标题翻译：用于从含水液体中除去重金属的设备
公开(公告)号：US4424126A
公开(公告)日：1984-01-03
申请号：US254640
申请日：1981-04-16
申请人： Chakra J. Santhanam , Ravindra M. Nadkarni
发明人： Chakra J. Santhanam , Ravindra M. Nadkarni
IPC分类号： C02F1/52 , C02F9/00 , C22B3/44 , B01D9/00
CPC分类号： C02F9/00 , C02F1/5236 , C22B3/44 , C02F1/66 , C02F2101/20 , C02F2209/06 , Y02P10/234
摘要： Method and apparatus for removing heavy metals as sulfides from aqueous liquids. The aqueous liquid is introduced into a circulating liquid loop wherein there are established a mixing zone, a controlled precipitation initiating zone, a crystal growing zone and a crystal settling zone. The aqueous feed liquid containing H S dissolved therein and at a pH below that at which the sulfide is precipitated is mixed in the loop with a pH-adjusting liquid; and the degree of supersaturation with respect to the metal sulfide is maintained within the controlled precipitation initiating and crystal growing zones in the metastable condition so that the growth rate of the metal sulfide crystals remains greater than under uncontrolled conditions vis-a-vis the nucleation rate to effect the production of metal sulfide crystals of a character which makes it possible to separate them through clarification and filtration.
摘要翻译：从含水液体中除去重金属作为硫化物的方法和装置。将水性液体引入到循环液体回路中，其中建立了混合区，受控沉淀引发区，晶体生长区和晶体沉降区。将含有H S的含水进料液在pH低于沉淀硫酸的pH下与pH调节液混合，并且相对于金属硫化物的过饱和度在亚稳态下保持在受控沉淀引发和晶体生长区内，使得金属硫化物晶体的生长速率保持大于在不成对条件下的成核速率以实现能够通过澄清和过滤分离它们的特性的金属硫化物晶体的生产。

2. 发明授权

US4278539A Method for removing heavy metals from aqueous liquids 失效
标题翻译：从含水液体中去除重金属的方法
公开(公告)号：US4278539A
公开(公告)日：1981-07-14
申请号：US940837
申请日：1978-09-08
申请人： Chakra J. Santhanam , Ravindra M. Nadkarni
发明人： Chakra J. Santhanam , Ravindra M. Nadkarni
IPC分类号： C02F1/52 , C02F9/00 , C22B3/44 , C02B1/26 , C02C5/02
CPC分类号： C02F9/00 , C02F1/5236 , C22B3/44 , C02F2101/20 , Y02P10/234
摘要： Method and apparatus for removing heavy metals as sulfides from aqueous liquids. The aqueous liquid is introduced into a circulating liquid loop wherein there are established a mixing zone, a controlled precipitation initiating zone, a crystal growing zone and a crystal settling zone. The aqueous feed liquid containing H.sub.2 S dissolved therein and at a pH below that at which the sulfide is precipitated is mixed in the loop with a pH-adjusting liquid; and the degree of supersaturation with respect to the metal sulfide is maintained within the controlled precipitation initiating and crystal growing zones in the metastable condition so that the growth rate of the metal sulfide crystals remains greater than under uncontrolled conditions vis-a-vis the nucleation rate to effect the production of metal sulfide crystals of a character which makes it possible to separate them through clarification and filtration.
摘要翻译：从含水液体中除去重金属作为硫化物的方法和装置。将水性液体引入到循环液体回路中，其中建立了混合区，受控沉淀引发区，晶体生长区和晶体沉降区。将含有H 2 S的含水进料液在pH低于沉淀硫酸的pH下与pH调节液混合，并且相对于金属硫化物的过饱和度在亚稳态下保持在受控沉淀引发和晶体生长区内，使得金属硫化物晶体的生长速率保持大于在不成对条件下的成核速率以实现能够通过澄清和过滤分离它们的特性的金属硫化物晶体的生产。

3. 发明授权

US5695629A Fluidized bed electrowinning of copper 失效
标题翻译：铜的流化床电解冶金
公开(公告)号：US5695629A
公开(公告)日：1997-12-09
申请号：US613680
申请日：1996-03-11
申请人： Ravindra M. Nadkarni , David J. Kinneberg
发明人： Ravindra M. Nadkarni , David J. Kinneberg
IPC分类号： C25C1/12 , C25C7/06
CPC分类号： C25C7/06 , C25C1/12 , Y02P10/212
摘要： A fluidized bed electrowinning system and method includes a fluidized bed reaction vessel in which a fluidized bed of conductive particles serves as the cathode for the electrowinning reaction, the anodes being in the form of hollow tubes of electrochemically active material inserted into the fluidized bed and separated therefrom by a membrane. The catholyte and anolyte are separately supplied from an electrolyte supply tank, the catholyte being pumped through the conductive particles to form the fluidized bed and the anolyte being supplied to individual anodes, and are commingled at the top of the reaction vessel before return to the supply tank. Removal of particles from the tank occurs through a part in the side of the tank, the removed particles normally being recycled through a selector valve back into the tank to maintain continuous operation. Periodically, the selector valve is operated to divert particles removed from the reaction vessel to a particle storage tank for subsequent size separation, with smaller particles being returned to the output product. Recycling of the particles during normal operation is facilitated by a recycle pump and eductor located outside the output port, the recycle solution also being commingled with the catholyte and anolyte at the top of the tank before return to the electrolyte supply tank. The electrolyte is refreshed by a separate leaching circuit responsive to monitoring of electrolyte supply in the tank.
摘要翻译：流化床电解提取系统和方法包括流化床反应容器，其中导电颗粒的流化床用作电沉积反应的阴极，阳极是插入流化床中的电化学活性材料的中空管的形式并分离通过膜。阴极电解液和阳极电解液分别从电解质供应罐供应，阴极电解液被泵送通过导电颗粒以形成流化床，阳极电解液供应到单独的阳极，并在返回供应之前混合在反应容器的顶部坦克。从罐中除去颗粒通过槽的一部分进行，颗粒通常通过选择阀循环回罐中以保持连续运行。周期性地，选择阀被操作以将从反应容器移除的颗粒转移到颗粒储存罐以用于随后的尺寸分离，较小的颗粒返回到输出产物。在正常操作期间通过位于输出端口外部的再循环泵和喷射器促进颗粒的循环，再循环溶液在返回到电解质供应罐之前也与罐顶部的阴极电解液和阳极电解液混合。响应于监测罐中的电解质供应，电解液被独立的浸出回路刷新。

4. 发明授权

US4039424A Process for producing fluid fuel from coal 失效
标题翻译：从煤生产流体燃料的方法
公开(公告)号：US4039424A
公开(公告)日：1977-08-02
申请号：US671174
申请日：1976-03-29
申请人： Richard W. Hyde , Stephen A. Reber , August H. Schutte , Ravindra M. Nadkarni
发明人： Richard W. Hyde , Stephen A. Reber , August H. Schutte , Ravindra M. Nadkarni
IPC分类号： C10G1/06 , C10G1/00 , C10G1/04
CPC分类号： C10G1/002 , C10G1/042 , Y10S208/952
摘要： Process for producing fluid fuel from coal. Moisture-free coal in particulate form is slurried with a hydrogen-donor solvent and the heated slurry is charged into a drum wherein the pressure is so regulated as to maintain a portion of the solvent in liquid form. During extraction of the hydrocarbons from the coal, additional solvent is added to agitate the drum mass and keep it up to temperature. Subsequently, the pressure is released to vaporize the solvent and at least a portion of the hydrocarbons extracted. The temperature of the mass in the drum is then raised under conditions required to crack the hydrocarbons in the drum and to produce, after subsequent stripping, a solid coke residue. The hydrocarbon products are removed and fractionated into several cuts, one of which is hydrotreated to form the required hydrogen-donor solvent while other fractions can be hydrotreated or hydrocracked to produce a synthetic crude product. The heaviest fraction can be used to produce ash-free coke especially adapted for hydrogen manufacture. The process can be made self-sufficient in hydrogen and furnishes as a by-product a solid carbonaceous material with a useful heating value.
摘要翻译：从煤生产流体燃料的方法。颗粒形式的无水煤与供氢剂溶剂一起制浆，并将加热的浆料装入鼓中，其中调节压力以保持一部分溶剂为液体形式。在从煤中提取烃时，加入另外的溶剂以搅拌鼓料并保持其达到温度。随后，释放压力以蒸发溶剂，并提取至少一部分烃。然后将滚筒中的质量的温度在裂化滚筒中的烃所需的条件下升高，并在随后的汽提之后产生固体焦炭残余物。将烃产物除去并分级成几个切口，其中一个切割加氢处理以形成所需的氢供体溶剂，而其它部分可以被加氢处理或加氢裂化以产生合成粗产物。最重的馏分可用于生产无灰焦炭，特别适用于制氢。该方法可以在氢气中自给自足，并作为副产物提供具有有用加热值的固体含碳材料。

5. 发明授权

US4078048A Process and apparatus for removing sulfur from stack gases in the form of elemental sulfur 失效
标题翻译：从元素硫形式的烟气中除去硫的方法和设备
公开(公告)号：US4078048A
公开(公告)日：1978-03-07
申请号：US769169
申请日：1977-02-16
申请人： Ravindra M. Nadkarni
发明人： Ravindra M. Nadkarni
IPC分类号： B01D53/50 , C01B17/44 , C01B17/04
CPC分类号： B01D53/501 , C01B17/44
摘要： Process and apparatus for removing sulfur dioxide from gases such as stack gases. The gases are scrubbed with an alkali metal compound in an aqueous solution to form alkali metal sulfite/sulfate salts which are then reacted with barium sulfide to precipitate barium sulfite/sulfate and form alkali metal sulfide/bisulfide in solution. The alkali metal sulfide/bisulfide is oxidized to form elemental sulfur and regenerated wash liquid; and the barium sulfite/sulfate is reduced by roasting to form the barium sulfide required. In a preferable embodiment, coal is used as both the reductant and fuel in the roasting of the barium sulfite/sulfate and the stack gases from the roasting are scrubbed along with the primary stack gases. As an optional step a portion of the alkali metal sulfite salts may be oxidized to sulfate prior to reaction with barium sulfide.
摘要翻译：从气体如烟气中除去二氧化硫的方法和设备。气体用碱金属化合物在水溶液中洗涤以形成碱金属亚硫酸盐/硫酸盐，然后与硫化钡反应以沉淀亚硫酸钡/硫酸盐并在溶液中形成碱金属硫化物/二硫化物。碱金属硫化物/二硫化物被氧化形成元素硫和再生洗涤液; 通过焙烧还原硫酸钡/硫酸钡以形成所需的硫化钡。在优选的实施方案中，在焙烧亚硫酸钡/硫酸钡时使用煤作为还原剂和燃料，并且来自焙烧的堆叠气体与主堆叠气体一起被洗涤。作为任选的步骤，碱金属亚硫酸盐的一部分可以在与硫化钡反应之前被氧化成硫酸盐。

6. 发明授权

US4944985A Method for electroless plating of ultrafine or colloidal particles and products produced thereby 失效
标题翻译：用于非极性或胶体颗粒的化学镀的方法及由此产生的产品
公开(公告)号：US4944985A
公开(公告)日：1990-07-31
申请号：US180367
申请日：1988-04-11
申请人： Guy B. Alexander , Ravindra M. Nadkarni
发明人： Guy B. Alexander , Ravindra M. Nadkarni
IPC分类号： C23C18/16 , C23C28/00
CPC分类号： C23C18/1635 , C23C18/1639 , C23C18/165 , C23C28/00 , Y10T428/12181 , Y10T428/2991 , Y10T428/2993
摘要： The present invention provides a process for the electroless plating of easily reducible metals onto ultrafine, usually inert, particles. Such plating is achieved through careful and accurate control of such parameters as the feed rates of the various solutions, the control of pH of the solution, the temperature, pressure and the rate of agitation of the solution in which the plating is taking place. The plated ultrafine composite particles and the powders made from the particles produced by the process are also a part of the invention. There is also provided a metal article of manufacture consisting of a metla such as copper, silver, gold, ruthenium, rhodium, palladium, osmium and platinum with a plurality of shperical shaped ultrafine particles with a diameter of less than about 10 microns dispersed substantially evenly through the metal article. The articles are fabricated using the plated ultrafine composite powders by methods involving, such as for example, casting, powder metallurgy and mechanical compression. The ultrafine particle is most generally of an inert material. There is also provided a process for making cast articles and recastable mixtures using the plated composite ultrafine powder. The cast articles have the inert ultrafine particles dispersed evenly throughout the cast article.
摘要翻译：本发明提供了一种将易于还原的金属化学镀到超细的，通常是惰性的颗粒上的方法。通过仔细和精确地控制诸如各种溶液的进料速率，溶液的pH值的控制，温度，压力以及电镀发生的溶液的搅拌速度等参数来实现这种镀覆。电镀的超细复合颗粒和由该方法制造的颗粒制成的粉末也是本发明的一部分。还提供了金属制品，其由诸如铜，银，金，钌，铑，钯，锇和铂的元器件组成，其具有基本上均匀分散的多个直径小于约10微米的石英形超细颗粒通过金属制品。通过涉及例如铸造，粉末冶金和机械压缩的方法，使用镀覆的超细复合粉末制造制品。超细颗粒通常是惰性材料。还提供了使用镀覆复合超细粉末制造铸造制品和可重复混合物的方法。铸造制品具有均匀分散在整个铸造制品中的惰性超细颗粒。

7. 发明授权

US4261738A Process for recovering precious metals from bimetallic material 失效
标题翻译：从双金属材料回收贵金属的工艺
公开(公告)号：US4261738A
公开(公告)日：1981-04-14
申请号：US81006
申请日：1979-10-01
申请人： James R. Valentine , Ravindra M. Nadkarni
发明人： James R. Valentine , Ravindra M. Nadkarni
IPC分类号： C22B11/00 , C22B7/00 , C22B11/04
CPC分类号： C22B11/04 , C22B7/008 , Y02P10/234 , Y02P10/236
摘要： Process and apparatus for recovering a precious metal, either as pure metal or in alloyed form, from a bimetallic material in which the precious metal is mechanically bonded to a base material comprising at least one base metal, e.g., copper, brass or bronze. The base material is leached off with an ammoniacal solution of an ammonium salt, preferably ammonium carbonate, using a leaching liquid containing reactive oxygen. The base metal or metals are recovered as metal compounds by thermally decomposing the resulting pregnant leach liquor; and the ammonia and ammonium salt are reconstituted for recycling. The method and apparatus are particularly suited for recovering karat gold from filled gold scrap.
摘要翻译：从贵金属机械地结合到包含至少一种贱金属例如铜，黄铜或青铜的基材的双金属材料中回收贵金属的纯金属或合金形式的方法和装置。使用含有活性氧的浸出液，用氨水，优选碳酸铵的氨溶液将基料沥滤。贱金属通过热分解所得到的浸出液作为金属化合物回收; 并且氨和铵盐被重新配制用于再循环。该方法和装置特别适用于从填充的金废料中回收karat金。

8. 发明授权

US4063903A Apparatus for disposal of solid wastes and recovery of fuel product therefrom 失效
标题翻译：用于处置固体废物和从其回收燃料产品的设备
公开(公告)号：US4063903A
公开(公告)日：1977-12-20
申请号：US611368
申请日：1975-09-08
申请人： Robert M. Beningson , Herbert E. Beningson , Narayanankutty V. P. Menon , Ravindra M. Nadkarni , Thomas J. Lamb , Lee K. Fox , William V. Keary
发明人： Robert M. Beningson , Herbert E. Beningson , Narayanankutty V. P. Menon , Ravindra M. Nadkarni , Thomas J. Lamb , Lee K. Fox , William V. Keary
IPC分类号： C10L5/44 , B02C17/00 , B02C17/18 , B02C19/18 , B02C21/00 , B03B9/06 , B07B9/00 , C10L5/22 , B30B11/00 , E06B9/04
CPC分类号： B02C17/007 , B02C17/18 , B02C19/18 , B02C21/00 , B03B9/06 , Y02E50/10 , Y02E50/30 , Y02W30/521 , Y02W30/525 , Y02W30/526
摘要： Apparatus for the disposal of solid wastes by converting the organic fraction of such wastes to a fuel or fuel supplement and by recovering one or more of the constituents of the inorganic fashion. A minimum amount of sterile land fill remains. No significant pollution problems are created. The apparatus comprises shredding means, primary separating means, magnetic separating means, fines separating means, acid applying means, drying/heating means, grinding means and means to separate the fine product fuel. The system can, if desired, be essentially self-contained in heat energy requirements.
摘要翻译：通过将这种废物的有机部分转化为燃料或燃料补充剂以及回收一种或多种无机方式的成分来处理固体废物的装置。最少量的无菌填土仍然存在。没有造成重大的污染问题。该设备包括切碎装置，主分离装置，磁分离装置，细分分离装置，酸施加装置，干燥/加热装置，研磨装置和分离精细产品燃料的装置。如果需要，该系统可以在热能要求中基本上是独立的。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式