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    • 2. 发明申请
    • Process for upgrading tar
    • 升级tar的过程
    • US20080099371A1
    • 2008-05-01
    • US11589453
    • 2006-10-30
    • James N. McCoyPaul F. KeusenkothenAlok Srivastava
    • James N. McCoyPaul F. KeusenkothenAlok Srivastava
    • C10C3/00C10G1/00
    • C10G55/04C10G21/003
    • A feedstream comprising tar is feed to a solvent deasphalter wherein it is contacted with a deasphalting solvent or fluid to produce a composition comprising a mixture or slurry of solvent containing a soluble portion of the tar, and a heavy tar fraction comprising the insoluble portion of the tar. These fractions may be separated in the deasphalter apparatus, such as by gravity settling wherein the heavy tar fraction is taken off as bottoms, and the solvent-soluble fraction taken as overflow or overheads with the solvent. The overflow or overheads is sent to a solvent recovery unit, such as a distillation apparatus, wherein solvent is recovered as overheads and a deasphalted tar fraction is taken off as a sidestream or bottoms. The solvent or a portion thereof, recovered as overheads, may be then be recycled to the solvent deasphalter, or in a preferred embodiment, at least a portion of the solvent is steam cracked to produce a product comprising light olefins.
    • 将包含焦油的进料流进料到溶剂脱沥青,其中其与脱沥青溶剂或流体接触以产生包含含有可溶部分焦油的溶剂的混合物或浆料的组合物,以及包含不溶部分的重焦油馏分 柏油。 这些级分可以在脱沥青装置中分离,例如通过重力沉降,其中重焦油馏分作为塔底馏分取出,溶剂可溶部分用溶剂作为溢流或塔顶馏出物。 将溢出物或塔顶馏出物送入溶剂回收装置,例如蒸馏装置,其中将溶剂回收为塔顶馏出物,脱沥青焦油馏分作为侧流或塔底馏分脱除。 然后将作为塔顶馏出物回收的溶剂或其一部分再循环到溶剂脱沥青中,或者在一个优选的实施方案中,至少一部分溶剂被蒸汽裂化以产生包含轻质烯烃的产物。
    • 5. 发明授权
    • Upgrading of tar using POX/coker
    • 使用POX /焦化器升级焦油
    • US08083931B2
    • 2011-12-27
    • US11881063
    • 2007-07-25
    • James N. McCoyPaul F. KeusenkothenAlok SrivastavaJames E Graham
    • James N. McCoyPaul F. KeusenkothenAlok SrivastavaJames E Graham
    • C10G57/00C10G27/04
    • C10G51/023C10G55/04
    • The invention is directed to a process wherein a feedstock or stream comprising steam cracker tar is passed to a vacuum pipestill. A deasphalted cut of tar is obtained as an overhead (or sidestream) and a heavy tar asphaltenic product is obtained as bottoms. In preferred embodiments, at least a portion of the bottoms product is sent to a partial oxidation unit (POX) wherein syn gas may be obtained as a product, and/or at least a portion of the bottoms product is used to produce a light product stream in a coker unit, such as coker naphtha and/or or coker gas oil. In another preferred embodiment at least a portion of the overheads product is added to refinery fuel oil pools and in yet another preferred embodiment at least a portion of the overheads product is mixed with locally combusted materials to lower soot make. Two or more of the aforementioned preferred embodiments may be combined.
    • 本发明涉及一种方法,其中将包含蒸汽裂解焦油的原料或料流送入真空管道。 作为塔顶(或侧流)获得焦油的脱沥青馏分,并且作为底部获得重质焦油沥青产物。 在优选的实施方案中,将底部产物的至少一部分送至部分氧化单元(POX),其中可以获得产物的合成气,和/或至少部分底部产物用于生产轻质产物 在焦化装置中,例如焦化石脑油和/或焦化瓦斯油。 在另一个优选的实施方案中,将至少一部分塔顶馏出产物加入到炼油厂燃料油池中,在另一个优选的实施方案中,塔顶产物的至少一部分与局部燃烧的材料混合以降低烟灰。 上述优选实施例中的两个或更多个可以组合。
    • 8. 发明授权
    • Process for upgrading tar
    • 升级tar的过程
    • US07744743B2
    • 2010-06-29
    • US11589453
    • 2006-10-30
    • James N. McCoyPaul F. KeusenkothenAlok Srivastava
    • James N. McCoyPaul F. KeusenkothenAlok Srivastava
    • C10G3/00C10G1/00
    • C10G55/04C10G21/003
    • A feedstream comprising tar is fed to a solvent deasphalter wherein it is contacted with a deasphalting solvent or fluid to produce a composition comprising a mixture or slurry of solvent containing a soluble portion of the tar, and a heavy tar fraction comprising the insoluble portion of the tar. These fractions may be separated in the deasphalter apparatus, such as by gravity settling wherein the heavy tar fraction is taken off as bottoms, and the solvent-soluble fraction taken as overflow or overheads with the solvent. The overflow or overheads is sent to a solvent recovery unit, such as a distillation apparatus, wherein solvent is recovered as overheads and a deasphalted tar fraction is taken off as a sidestream or bottoms. The solvent or a portion thereof, recovered as overheads, may be then be recycled to the solvent deasphalter, or in a preferred embodiment, at least a portion of the solvent is steam cracked to produce a product comprising light olefins.
    • 将包含焦油的进料流进料到溶剂脱沥青器中,其中其与脱沥青溶剂或流体接触以产生包含含有焦油的可溶部分的溶剂的混合物或浆料的组合物,以及包含不溶部分的重焦油馏分 柏油。 这些级分可以在脱沥青装置中分离,例如通过重力沉降,其中重焦油馏分作为塔底馏分取出,溶剂可溶部分用溶剂作为溢流或塔顶馏出物。 将溢出物或塔顶馏出物送入溶剂回收装置,例如蒸馏装置,其中将溶剂回收为塔顶馏出物,脱沥青焦油馏分作为侧流或塔底馏分脱除。 然后将作为塔顶馏出物回收的溶剂或其一部分再循环到溶剂脱沥青中,或者在一个优选的实施方案中,至少一部分溶剂被蒸汽裂化以产生包含轻质烯烃的产物。
    • 9. 发明授权
    • Method and apparatus for integrating data from external sources into a database system
    • 将数据从外部数据源整合到数据库系统中的方法和装置
    • US08903846B2
    • 2014-12-02
    • US10798545
    • 2004-03-11
    • Alok Srivastava
    • Alok Srivastava
    • G06F7/00G06F17/30
    • G06F17/30557G06F17/30342
    • Techniques used in a relational database system for defining subclasses of built-in classes and thereby achieving columns in database tables which contain polymorphic objects of the built-in classes. The methods for the subclasses are contained in named packages. A table in the database system's schema relates the package name to a storage location managed by the relational database system that contains the compiled code for the package. When a method from the package is invoked, a dynamic linker uses the name and the table to locate the compiled code and then executes the compiled code. One thing that can be done with subclasses is to use a database system to automatically connect a Web user with a server of streaming data. The connection thus established is made by the server of streaming data to the Web user and thus bypasses the database system.
    • 在关系数据库系统中使用的技术,用于定义内置类的子类,从而实现包含内置类的多态对象的数据库表中的列。 子类的方法包含在命名的包中。 数据库系统架构中的表将包名称与关系数据库系统管理的存储位置相关联,该存储位置包含该包的编译代码。 当调用来自包的方法时,动态链接器使用名称和表来定位编译的代码,然后执行编译的代码。 可以用子类完成的一件事是使用数据库系统来自动连接Web用户与流数据的服务器。 由此建立的连接由流数据服务器发送给Web用户,从而绕过数据库系统。
    • 10. 发明授权
    • Waveform generator
    • 波形发生器
    • US08847639B1
    • 2014-09-30
    • US14141466
    • 2013-12-27
    • Alok SrivastavaShrestha Priya
    • Alok SrivastavaShrestha Priya
    • H03B28/00H04L7/04H04L7/00
    • G06F1/0321
    • A waveform generator for providing an analog output signal to a target device includes a look-up-table (LUT) that stores a plurality of binary address values and a digital-to-analog converter (DAC) that generates the analog output signal. The waveform generator receives an input trigger signal from the target device when the target device is ready to receive the analog output signal. The waveform generator generates a synchronized input trigger signal and aligns the analog output signal with the synchronized input trigger signal by reloading the LUT with a binary address value of zero.
    • 用于向目标设备提供模拟输出信号的波形发生器包括存储多个二进制地址值的查找表(LUT)和产生模拟输出信号的数模转换器(DAC)。 当目标设备准备好接收模拟输出信号时,波形发生器从目标设备接收输入触发信号。 波形发生器产生同步输入触发信号,并通过以二进制地址值为零重新加载LUT,将模拟输出信号与同步输入触发信号对准。