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公开(公告)号:US08258357B2
公开(公告)日:2012-09-04
申请号:US12410851
申请日:2009-03-25
申请人: Kerman Dukandar , David Spence , Sunil Panditrao
发明人: Kerman Dukandar , David Spence , Sunil Panditrao
CPC分类号: C07C11/06 , C07C6/04 , Y02P20/125
摘要: This invention relates to an integrated process for the efficient production of olefins from C4 feedstocks comprising butane and more particularly to a method of producing propylene and butadiene. The process combines a dehydrogenation unit with an olefin conversion unit to convert butane feedstock to propylene and butadiene products. The combined catadiene-OCT process produces yields of propylene from normal butane in excess of 70%.
摘要翻译: 本发明涉及一种用于从包含丁烷的C4原料有效生产烯烃的综合方法,更具体地说涉及生产丙烯和丁二烯的方法。 该方法将脱氢装置与烯烃转化装置结合,将丁烷原料转化为丙烯和丁二烯产品。 联合的二烯二氯甲烷方法可以从正丁烷产生的丙烯产率超过70%。
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公开(公告)号:US20100249471A1
公开(公告)日:2010-09-30
申请号:US12410851
申请日:2009-03-25
申请人: Kerman Dukandar , David Spence , Sunil Panditrao
发明人: Kerman Dukandar , David Spence , Sunil Panditrao
CPC分类号: C07C11/06 , C07C6/04 , Y02P20/125
摘要: This invention relates to an integrated process for the efficient production of olefins from C4 feedstocks comprising butane and more particularly to a method of producing propylene and butadiene. The process combines a dehydrogenation unit with an olefin conversion unit to convert butane feedstock to propylene and butadiene products. The combined catadiene-OCT process produces yields of propylene from normal butane in excess of 70%.
摘要翻译: 本发明涉及一种用于从包含丁烷的C4原料有效生产烯烃的综合方法,更具体地说涉及生产丙烯和丁二烯的方法。 该方法将脱氢装置与烯烃转化装置结合,将丁烷原料转化为丙烯和丁二烯产品。 联合的二烯二氯甲烷方法可以从正丁烷产生的丙烯产率超过70%。
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公开(公告)号:US20120090238A1
公开(公告)日:2012-04-19
申请号:US12925143
申请日:2010-10-14
IPC分类号: C10L3/08
CPC分类号: C01B3/386 , C01B2203/0261 , C01B2203/10 , C01B2203/1205 , C01B2203/169
摘要: A process of catalytic partial oxidation of a hydrocarbon fuel, such as diesel, with an oxidant, such as air, to produce a partially-oxidized reaction product, such as a hydrogen-containing fuel gas, with simultaneous in-situ coke removal. The process involves feeding a hydrocarbon fuel and an oxidant to a reactor in a fuel-rich feed ratio; reacting the fuel and oxidant for a fuel-rich cycle-time so as to produce a partially-oxidized reaction product; varying the fuel feed, or the oxidant feed, or both feeds to produce a fuel-lean feed to the reactor; maintaining the fuel-lean feed for a fuel-lean cycle-time sufficient to reduce coke deposits while maintaining a substantially constant yield of partially-oxidized reaction product; and alternating between the fuel-rich and fuel-lean operating cycles.
摘要翻译: 烃类燃料如柴油与氧化剂如空气进行催化部分氧化以产生部分氧化的反应产物如含氢燃料气体同时进行原位焦炭脱除的方法。 该方法包括以富燃料进料比将烃燃料和氧化剂供入反应器; 使燃料和氧化剂反应富燃循环时间以产生部分氧化的反应产物; 改变燃料进料或氧化剂进料或两种进料以产生富含燃料的进料至反应器; 保持贫燃料的进料以减少燃料贫乏循环时间,足以减少焦炭沉积物,同时保持基本上恒定的部分氧化的反应产物的产率; 并且在富燃料和贫燃料的运行循环之间交替。
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公开(公告)号:US20090252661A1
公开(公告)日:2009-10-08
申请号:US12080919
申请日:2008-04-07
申请人: Subir Roychoudhury , David Spence , Richard Mastanduno , Dennis E. Walsh , Jun Iwamoto , Go Motohashi , Hitoshi Mikami , Eric Walker
发明人: Subir Roychoudhury , David Spence , Richard Mastanduno , Dennis E. Walsh , Jun Iwamoto , Go Motohashi , Hitoshi Mikami , Eric Walker
IPC分类号: B01J8/06
CPC分类号: B01J8/025 , B01J8/0492 , B01J2208/00309 , B01J2208/00407 , B01J2208/00557 , B01J2208/00716 , C01B3/382 , C01B2203/0244 , C01B2203/0261 , C01B2203/0811 , C01B2203/085 , C01B2203/1005 , C01B2203/1064 , C01B2203/1082 , C01B2203/1235 , C01B2203/1282 , C01B2203/1294 , C01B2203/169 , C01B2203/82
摘要: A fuel reformer includes a reforming portion having a tubular catalytic converter that is composed of a substrate supporting the catalytic component, and is arranged to have a center axis extending along the supply direction of the fuel and oxidizer derived from a supply portion, and a communication passage arranged along an inner wall of the catalytic converter and communicating with the supply portion. The fuel and oxidizer supplied from the supply portion to the communication passage pass from the inner wall of the catalytic converter to an outer wall thereof by forced convection, thereby reforming the fuel.
摘要翻译: 燃料重整器包括具有管状催化转化器的重整部分,该管状催化转化器由支撑催化剂组分的基材组成,并且被布置成具有沿着从供给部得到的燃料和氧化剂的供给方向延伸的中心轴, 通道沿着催化转化器的内壁排列并与供应部分连通。 从供给部供给到连通路的燃料和氧化剂通过强制对流从催化转化器的内壁经过其外壁,由此重燃燃料。
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公开(公告)号:US20050094679A1
公开(公告)日:2005-05-05
申请号:US10982664
申请日:2004-11-05
申请人: James Kafka , David Spence
发明人: James Kafka , David Spence
IPC分类号: H01S3/10 , B23K26/06 , B23K26/40 , G01N21/95 , H01S3/00 , H01S3/0941 , H01S3/098 , H01S3/109 , H01S3/16 , H01S3/23
CPC分类号: H01S3/1112 , B23K26/0624 , B23K26/40 , B23K2101/40 , B23K2103/50 , G01N21/9501 , H01S3/06741 , H01S3/0941 , H01S3/09415 , H01S3/1106 , H01S3/1673 , H01S3/23 , H01S3/2316 , H01S3/2383
摘要: A laser apparatus includes a modelocked laser system with a high reflector and an output coupler that define an oscillator cavity. An output beam is produced from the oscillator cavity. A gain medium and a modelocking device are positioned in the oscillator cavity. A diode pump source produces a pump beam that is incident on the gain medium. A second harmonic generator is coupled to the oscillator cavity. A third harmonic generator that produces a UV output beam, is coupled to the second harmonic generator. A photonic crystal fiber is provided with a proximal end coupled to the laser system. A delivery device is coupled to a distal portion of the photonic crystal fiber.
摘要翻译: 激光装置包括具有高反射器的锁模激光系统和限定振荡器腔的输出耦合器。 输出光束由振荡器腔产生。 增益介质和锁模装置位于振荡器腔中。 二极管泵浦源产生入射在增益介质上的泵浦光束。 二次谐波发生器耦合到振荡器腔。 产生UV输出光束的三次谐波发生器耦合到二次谐波发生器。 光子晶体光纤具有耦合到激光系统的近端。 递送装置耦合到光子晶体光纤的远端部分。
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公开(公告)号:US08387380B2
公开(公告)日:2013-03-05
申请号:US12587593
申请日:2009-10-08
IPC分类号: F01B29/10
CPC分类号: F02G1/043 , F02G1/055 , F02G2254/70
摘要: The invention provides an apparatus and a method for transferring heat by conduction to the internal heat acceptor of an external combustion engine. Fuel and air are introduced into a combustion chamber and mixed to form an air/fuel mixture. The air/fuel mixture is directed into a catalytic reactor that is positioned in direct contact (non-spaced-apart relation) with the heater head. Heat is transferred via conduction from the catalytic reactor to the heater head; and the catalytic reaction products are exhausted with heat recuperation.
摘要翻译: 本发明提供一种通过传导将热量传递给外燃机的内部受热器的装置和方法。 将燃料和空气引入燃烧室并混合以形成空气/燃料混合物。 空气/燃料混合物被引导到与加热器头直接接触(非间隔关系)的催化反应器中。 热量通过传导从催化反应器转移到加热头; 催化反应产物用热还原排出。
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公开(公告)号:US20130017608A1
公开(公告)日:2013-01-17
申请号:US13505262
申请日:2010-10-28
申请人: Andrew Mark Bailey , Gatherine Collins , Amanda Crawford , Gary Foster , Alison Michelle Griffin , Sreedhar Kilaru , Angela Scrogham , David Spence
发明人: Andrew Mark Bailey , Gatherine Collins , Amanda Crawford , Gary Foster , Alison Michelle Griffin , Sreedhar Kilaru , Angela Scrogham , David Spence
CPC分类号: C12P15/00 , C12N15/52 , C12Y205/01029
摘要: This invention relates to a novel Pleuromutilin gene cluster and methods of increasing yields of Pleuromutilin produced by Clitopilus and related basidiomycete species.
摘要翻译: 本发明涉及一种新颖的Pleuromutilin基因簇和提高由Clitopilus和相关担子菌种产生的Pleuromutilin产量的方法。
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公开(公告)号:US08337757B2
公开(公告)日:2012-12-25
申请号:US12322970
申请日:2009-02-09
申请人: Subir Roychoudhury , Joel M. Desjardins , David Spence , Richard Mastanduno , Dennis E. Walsh , William C. Pfefferle
发明人: Subir Roychoudhury , Joel M. Desjardins , David Spence , Richard Mastanduno , Dennis E. Walsh , William C. Pfefferle
IPC分类号: G05B13/00
CPC分类号: C01B3/26 , C10J3/723 , C10J2200/06 , G05D23/1931 , Y10T436/207497 , Y10T436/218
摘要: A method is provided for controlling the operating temperature of a catalytic reactor using a closed-loop system that provides for varying the reactor input and other operating parameters in order to maintain the operating temperature of the reactor at or near the initial setpoint temperature for operation of the reactor. In one example, maximum and minimum operating temperatures with a catalytic partial oxidation reactor are controlled, as well as maintaining control over the corresponding minimum required ratio of oxygen atoms to carbon atoms, such that the operating temperature within the reactor is maintained below the material limits but above threshold temperatures for coking.
摘要翻译: 提供了一种用于使用闭环系统来控制催化反应器的操作温度的方法,所述闭环系统提供改变反应器输入和其它操作参数,以便将反应器的操作温度保持在或接近初始设定点温度,以操作 反应堆。 在一个实例中,控制具有催化部分氧化反应器的最大和最小操作温度,以及保持对氧原子与碳原子的相应最小所需比例的控制,使得反应器内的操作温度保持在材料极限以下 但高于焦化阈值温度。
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公开(公告)号:US20080013586A1
公开(公告)日:2008-01-17
申请号:US11515697
申请日:2006-09-05
申请人: David Spence , James Kafka , Alan Petersen
发明人: David Spence , James Kafka , Alan Petersen
CPC分类号: H01S3/09415 , H01S3/0815 , H01S3/094 , H01S3/1611 , H01S3/1673
摘要: Methods and devices for narrow band diode pumping of various laser gain materials which for some embodiments reduces or eliminates some thermal problems as well as other optical problems associated with diode pumping of crystalline materials, including anisotropic materials. In some embodiments, a VBG is used to narrow the bandwidth of the pump light from a pump diode source. In some embodiments, pump light from a diode pump source is chosen to have a wavelength centered substantially at an intersection of absorption coefficients for different polarizations of pump light in the laser gain material.
摘要翻译: 用于各种激光增益材料的窄带二极管泵浦的方法和装置,对于一些实施例,减少或消除了一些热问题,以及与结晶材料(包括各向异性材料)的二极管泵浦有关的其它光学问题。 在一些实施例中,使用VBG来缩小来自泵二极管源的泵浦光的带宽。 在一些实施例中,来自二极管泵浦源的泵浦光被选择为具有基本上位于激光增益材料中的泵浦光的不同极化的吸收系数的交点处的波长。
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公开(公告)号:US20130266903A1
公开(公告)日:2013-10-10
申请号:US13996688
申请日:2012-01-18
CPC分类号: F23D11/441 , C01B3/386 , C01B2203/0261 , C01B2203/1288 , F23C13/02 , F23D11/443 , F23D11/448 , F23L15/04 , Y02E20/348
摘要: An apparatus and process for vaporizing and, optionally, igniting a liquid fuel, preferably, a distillate fuel. The apparatus includes the following components: a heat-conductive reticulated screen positioned within a chamber; a first inlet path into the chamber for delivering a liquid fuel onto the screen; a second inlet path into the chamber for contacting an oxidant with the screen and fuel; a means for heating the screen to a temperature sufficient to vaporize and, optionally, ignite the liquid fuel; and a recuperator in fluid communication with the chamber for transferring heat from the chamber to the second inlet path. The apparatus is suitably employed in compact and portable oxidation reactors, for example, in external combustion engines, catalytic partial oxidation reformers, and hybrid combustors operating in flame and/or catalytic modes.
摘要翻译: 用于蒸发和任选地点燃液体燃料,优选馏出燃料的装置和方法。 该装置包括以下部件:定位在腔室内的导热网状筛网; 进入所述室中的第一入口路径,用于将液体燃料输送到所述筛网上; 进入所述室的第二入口路径,用于使氧化剂与所述筛网和燃料接触; 用于将筛网加热至足以蒸发的温度和任选地点燃液体燃料的装置; 以及与腔室流体连通以将热量从腔室传递到第二入口路径的换热器。 该设备适用于紧凑型便携式氧化反应器,例如在外燃机,催化部分氧化重整器和以火焰和/或催化模式运行的混合燃烧器中。
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