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

US5658545A Metal regeneration of iron chelates in nitric oxide scrubbing 失效
标题翻译：一氧化氮洗涤中铁螯合物的金属再生
公开(公告)号：US5658545A
公开(公告)日：1997-08-19
申请号：US412706
申请日：1995-03-29
申请人： Shih-Ger Chang , David Littlejohn , Yao Shi
发明人： Shih-Ger Chang , David Littlejohn , Yao Shi
IPC分类号： B01D53/56 , B01D53/96 , C01C1/04 , C21B3/04 , B01J8/00
CPC分类号： B01D53/96 , B01D53/56 , C01C1/04 , C21B3/04 , Y02P10/143 , Y02P10/216 , Y02W30/542
摘要： The present invention relates to a process of using metal particles to reduce NO to NH.sub.3. More specifically, the invention concerns an improved process to regenerate iron (II) (CHELATE) by reduction of iron (II) (CHELATE) (NO) complex, which process comprises: a) contacting an aqueous solution containing iron (II) (CHELATE) (NO) with metal particles at between about 20.degree. and 90.degree. C. to reduce NO present, produce ammonia or an ammonium ion, and produce free iron (II) (CHELATE) at a pH of between about 3 and 8. The process is useful to remove NO from flue gas and reduce pollution.
摘要翻译：本发明涉及使用金属颗粒将NO还原成NH 3的方法。更具体地，本发明涉及通过还原铁（II）（CHELATE）（NO）络合物来再生铁（II）（CHELATE）的改进方法，该方法包括：a）使含有铁（II）（CHELATE））（NO）与金属颗粒在约20-90℃之间以减少NO存在，产生氨或铵离子，并且在约3至8的pH下产生游离的铁（II）（CHELATE）。过程有助于从烟道气中去除NO，减少污染。

2. 发明授权

US4837361A A process for the preparation of cysteine from cystine 失效
公开(公告)号：US4837361A
公开(公告)日：1989-06-06
申请号：US122725
申请日：1987-11-18
申请人： Shih-Ger Chang , David K. Liu , Elizabeth A. Griffiths , David Littlejohn
发明人： Shih-Ger Chang , David K. Liu , Elizabeth A. Griffiths , David Littlejohn
IPC分类号： B01D53/60
CPC分类号： B01D53/60
摘要： The present invention in one aspect relates to a process for the simultaneous removal of NO.sub.x and SO.sub.2 from a fluid stream comprising mixtures thereof and in another aspect relates to the separation, use and/or regeneration of various chemicals contaminated or spent in the process and which includes the steps of:(A) contacting the fluid stream at a temperature of between about 105.degree. and 180.degree. C. with a liquid aqueous slurry or solution comprising an effective amount of an iron chelate of an amino acid moiety having at least one --SH group;(B) separating the fluid stream from the particulates formed in step (A) comprising the chelate of the amino acid moiety and fly ash;(C) washing and separating the particulates of step (B) with an aqeous solution having a pH value of between about 5 to 8;(D) subsequently washing and separating the particulates of step (C) with a strongly acidic aqueous solution having a pH value of between about 1 to 3;(E) washing and separating the particulates of step (D) with an basic aqueous solution having a pH value of between about 9 to 12;(F) optionally adding additional amino acid moiety, iron (II) and alkali to the aqueous liquid from step (D) to produce an aqueous solution or slurry similar to that in step (A) having a pH value of between about 4 to 12; and(G) recycling the aqueous slurry of step (F) to the contacting zone of step (A).Steps (D) and (E) can be carried out in the reverse sequence, however the preferred order is (D) and then (E).In a preferred embodiment the present invention provides an improved process for the preparation (regeneration) of cysteine from cystine, which includes reacting an aqueous solution of cystine at a pH of between about 9 to 13 with a reducing agent selected from hydrogen sulfide or alkali metal sulfides, sulfur dioxide, an alkali metal sulfite or mixtures thereof for a time and at a temperature effective to cleave and reduce the cystine to cysteine with subsequent recovery of the cysteine.In another preferred embodiment the present invention provides a process for the removal of NO.sub.x, SO.sub.2 and particulates from a fluid stream which includes the steps of (A) injecting into a reaction zone an aqueous solution itself comprising (i) an amino acid moiety selected from those described above; (ii) iron (II) ion; and (iii) an alkali, wherein the aqueous solution has a pH of between about 4 and 11; followed by solids separation and washing as is described in steps (B), (C), (D) and (E) above. The overall process is useful to reduce acid rain components from combustion gas sources.

3. 发明授权

US4732744A Process for the combined removal of SO.sub.2 and NO.sub.x from flue gas 失效
公开(公告)号：US4732744A
公开(公告)日：1988-03-22
申请号：US923541
申请日：1986-10-27
申请人： Shih-Ger Chang , David K. Liu , Elizabeth A. Griffiths , David Littlejohn
发明人： Shih-Ger Chang , David K. Liu , Elizabeth A. Griffiths , David Littlejohn
IPC分类号： B01D53/60 , C01B21/00 , C01B17/00
CPC分类号： B01D53/60
摘要： The present invention in one aspect relates to a process for the simultaneous removal of NO.sub.x and SO.sub.2 from a fluid stream comprising mixtures thereof and in another aspect relates to the separation, use and/or regeneration of various chemicals contaminated or spent in the process and which includes the steps of:(A) contacting the fluid stream at a temperature of between about 105.degree. and 180.degree. C. with a liquid aqueous slurry or solution comprising an effective amount of an iron chelate of an amino acid moiety having at least one --SH group;(B) separating the fluid stream from the particulates formed in step (A) comprising the chelate of the amino acid moiety and fly ash;(C) washing and separating the particulates of step (B) with an aqueous solution having a pH value of between about 5 to 8;(D) subsequently washing and separating the particulates of step (C) with a strongly acidic aqueous solution having a pH value of between about 1 to 3;(E) washing and separating the particulates of step (D) with an basic aqueous solution having a pH value of between about 9 to 12;(F) optionally adding additional amino acid moiety, iron (II) and alkali to the aqueous liquid from step (D) to produce an aqueous solution or slurry similar to that in step (A) having a pH value of between about 4 to 12; and(G) recycling the aqueous slurry of step (F) to the contacting zone of step (A).Steps (D) and (E) can be carried out in the reverse sequence, however the preferred order is (D) and then (E).In another preferred embodiment the present invention provides a process for the removal of NO.sub.x, SO.sub.2 and particulates from a fluid stream which includes the steps of (A) injecting into a reaction zone an aqueous solution itself comprising (i) an amino acid moiety selected from those described above; (ii) iron (II) ion; and (iii) an alkali, wherein the aqueous solution has a pH of between about 4 and 11; followed by solids separation and washing as is described in steps (B), (C), (D) and (E) above. The overall process is useful to reduce acid rain components from combustion gas sources.

4. 发明申请

US20140230701A1 NATURAL DRAFT LOW SWIRL BURNER 审中-公开
标题翻译：自然式低温燃烧器
公开(公告)号：US20140230701A1
公开(公告)日：2014-08-21
申请号：US14111161
申请日：2012-04-06
申请人： Robert K. Cheng , David Littlejohn
发明人： Robert K. Cheng , David Littlejohn
IPC分类号： F23D14/08 , F23B30/00
CPC分类号： F23D14/08 , F23B5/02 , F23C6/042 , F23C9/00 , F23C2202/10 , F23C2900/06043 , F23C2900/09002 , F23D14/04 , F23D14/64 , F23D2900/14701
摘要： A new design for a low swirl burner is disclosed in which natural draft rather than a motorized pump is used to move a fuel-air mixture through the burner. This new design enables the burn off of gas at refineries in an environment where electric motors cannot be used because of the potential for sparks, which could trigger explosions. Additional modifications to the burner, including the introduction of flue gas to the burner allows for the reduction of NOx gas to meet current emission control targets, without the need for further post combustion emission control systems.
摘要翻译：公开了一种用于低涡流燃烧器的新设计，其中使用自然通风而不是电动泵来使燃料 - 空气混合物通过燃烧器移动。这种新设计使得在电动机不能使用的环境中，在炼油厂燃烧气体，因为可能引起爆炸的火花。对燃烧器的额外修改，包括将烟气引入燃烧器允许减少NOx气体以满足电流排放控制目标，而不需要进一步的后燃烧排放控制系统。

5. 发明申请

US20070214017A1 Diagnostic imaging simplified user interface methods and apparatus 有权
标题翻译：诊断成像简化了用户界面的方法和设备
公开(公告)号：US20070214017A1
公开(公告)日：2007-09-13
申请号：US11375187
申请日：2006-03-13
申请人： Mark Profio , Sang Lee , David Littlejohn , Scott Zimmerman , Holly McDaniel , Susan Stuebe , Patrick Virtue , Scott Robinson , Ann Hole , Christopher Proctor
发明人： Mark Profio , Sang Lee , David Littlejohn , Scott Zimmerman , Holly McDaniel , Susan Stuebe , Patrick Virtue , Scott Robinson , Ann Hole , Christopher Proctor
IPC分类号： G06F19/00 , A61B5/00
CPC分类号： G06F19/3406 , A61B6/465 , A61B6/467 , A61B6/468 , A61B6/469 , A61B6/566 , G06F19/00 , G06F19/321 , G06Q50/24 , G16H40/63
摘要： Apparatus includes an imaging system with a user interface, and a hospital radiological information system (RIS) coupled to the imaging system such that the user interface allows for bi-directional data transfer between the imaging system and the RIS.
摘要翻译：装置包括具有用户界面的成像系统和耦合到成像系统的医院放射学信息系统（RIS），使得用户界面允许成像系统和RIS之间的双向数据传输。

6. 发明授权

US4824241A Atomic spectroscopy 失效
标题翻译：原子光谱
公开(公告)号：US4824241A
公开(公告)日：1989-04-25
申请号：US57727
申请日：1987-06-02
申请人： David Littlejohn , John Marshall
发明人： David Littlejohn , John Marshall
IPC分类号： G01N21/31 , G01N21/74
CPC分类号： G01N21/74
摘要： A method of atomic spectroscopy is provided involving the steps of inserting a probe into a cuvette, depositing a sample to be atomized onto the probe by means of a sample dispenser, withdrawing the probe from the cuvette, heating the cuvette to a desired temperature sufficient to atomize the sample, and then reinserting the probe into the cuvette. The sample dispenser may be a manually-operated pipette, or the dosing tube of an autosampler. Liquid samples may be dried by heating the cuvette to a temperature lower than the atomization temperature before withdrawing the probe from the cuvette. Both solid and liquid samples may be atomized by this procedure. Such samples also may be ashed where appropriate by heating the cuvette to a second temperature between the first temperature and the atomization temperature before withdrawing the probe from the cuvette. A spectrophotometer using the technique is also described.
摘要翻译：提供了一种原子光谱学方法，其包括以下步骤：将探针插入比色杯中，通过样品分配器将待雾化的样品沉积到探针上，将样品池从试管中取出，将试管加热到足够的温度雾化样品，然后将探针重新插入比色皿。样品分配器可以是手动移液器或自动进样器的计量管。在将探针从比色皿中取出之前，通过将比色皿加热至低于雾化温度的温度，可以干燥液体样品。固体和液体样品都可以通过该程序雾化。这样的样品也可以在将试管从比色杯取出之前，通过将比色皿加热到第一温度和雾化温度之间的第二温度来适当地被灰化。还描述了使用该技术的分光光度计。

7. 发明授权

US4657389A Electrothermal atomizer 失效
标题翻译：电热雾化器
公开(公告)号：US4657389A
公开(公告)日：1987-04-14
申请号：US749051
申请日：1985-06-26
申请人： David Littlejohn
发明人： David Littlejohn
IPC分类号： G01N21/31 , G01N21/74
CPC分类号： G01N21/74
摘要： An electrothermal atomizer comprises a cuvette (1) clamped between two electrodes (2,3) to which an electrical power supply (4) is connected. A probe comprising a tubular head portion (5) and a stem portion (6) is insertable in and removable from the cuvette (1) by means of a rack (9) driven by a motor via a gear (10).By making the probe head (5) in the form of a tube, a large sample volume can be accommodated, and by forming the stem (6) at the top of the tube (5), spreading of acid samples along the stem during the drying phase is minimized.
摘要翻译：电热雾化器包括夹在电源（4）连接到的两个电极（2,3）之间的比色杯（1）。包括管状头部（5）和杆部（6）的探针可通过齿轮（10）由电动机驱动的齿条（9）插入并从反应杯（1）中移除。通过将探针头（5）制成管的形式，可以容纳大的样品体积，并且通过在管（5）的顶部形成茎（6），在干燥相最小化。

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