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    • 7. 发明授权
    • Integrated treatment system for refinery oily sludges
    • 炼油油污泥综合处理系统
    • US5271851A
    • 1993-12-21
    • US27879
    • 1993-03-08
    • Stephen R. NelsonAlan M. Claude
    • Stephen R. NelsonAlan M. Claude
    • B01D29/39B01D37/02B01D29/01
    • B01D37/02B01D29/39
    • A process for the treatment of refinery oily sludges to produce an oily fraction that is reprocessed in the refinery into (i) salable products and (ii) a solid residue meeting environmental regulatory agency requirements for disposal in non-hazardous solid waste landfills. The process includes mixing the refinery oily sludge with a particulate filter aid and preferably a single solvent selected from refinery intermediate and product streams and contacting this mixture with plate filters in a closed filter vessel. A cake residue forms on the filter plates and a filtrate mixture of oil, water and solvent is produced. The filtrate is separated into an oily fraction and a water fraction. The oily fraction is rerouted to refinery operating units for processing into salable products. The water fraction is routed to a refinery water treatment system. When filter cake residue has built to a predetermined level, charge to the filter vessel is discontinued. The filter cake residue is washed with a predetermined quantity of solvent and then steam stripped to remove petroleum hydrocarbons to a desired residual level, e.g. less than about 1,000 ppm or less than 500 ppm. The steam stripped filter cake is then removed from the filter vessel for disposal in an environmentally approved landfill.
    • 一种处理炼油油污泥的方法,用于生产在炼油厂中再处理的油性馏分为(i)可销售产品和(ii)符合环境管理机构在非危险性固体废物堆填区处置的要求的固体残渣。 该方法包括将精炼油性污泥与微粒过滤助剂混合,优选将选自炼厂中间体和产物流的单一溶剂混合,并将该混合物与板式过滤器在封闭的过滤容器中接触。 在滤板上形成滤饼,产生油,水和溶剂的滤液混合物。 将滤液分离成油状部分和水分。 油性馏分被重新路由到炼油厂操作单元,用于加工成可销售的产品。 水分被送到炼油厂水处理系统。 当滤饼残渣达到预定水平时,停止对过滤容器的充电。 滤饼残留物用预定量的溶剂洗涤,然后蒸汽汽提以除去石油烃至所需的残留水平,例如, 小于约1,000ppm或小于500ppm。 然后将蒸汽汽提的滤饼从过滤器容器中取出,以便在环境认证的垃圾填埋场中处理。
    • 8. 发明授权
    • Solvent recovery from solvent process material mixtures
    • 溶剂回收溶剂工艺材料混合物
    • US4666562A
    • 1987-05-19
    • US424393
    • 1982-09-27
    • Stephen R. Nelson
    • Stephen R. Nelson
    • B01D3/06B01D3/38C10G1/00C10G21/00C10G21/28C10G7/00
    • B01D3/06B01D3/38C10G1/002C10G21/003C10G21/28Y10S203/90
    • A method of recovering light organic solvent from a liquid mixture containing the solvent and a process material, such as asphaltenes or coal liquefaction products. The solvent-process material mixture is treated in a solvent separation zone to separate a first vapor phase rich in solvent and a first liquid phase rich in process material. At least a portion of the liquid in the solvent separation zone is transferred to a mixing zone, where the liquid is intimately contacted with steam, under shearing conditions. The steam-liquid phase mixture thus produced is returned to the solvent separation zone and treated to separate a second vapor phase, rich in steam and solvent, and a second liquid phase, rich in process material and substantially depleted of solvent. Solvent is recovered from the first and second vapor phases.
    • 从含有溶剂的液体混合物和沥青质或煤液化产物等工艺材料中回收轻质有机溶剂的方法。 溶剂处理材料混合物在溶剂分离区中处理以分离富含溶剂的第一气相和富含工艺材料的第一液相。 在剪切条件下,将溶剂分离区中的液体的至少一部分转移到混合区,其中液体与蒸汽紧密接触。 将如此制备的蒸汽 - 液相混合物返回到溶剂分离区并进行处理以分离富含蒸气和溶剂的第二气相,以及富含工艺材料和基本上不含溶剂的第二液相。 从第一和第二蒸气相回收溶剂。
    • 9. 发明授权
    • Adjustable waveguide/conduit clamp
    • 可调波导/导管夹
    • US4921191A
    • 1990-05-01
    • US206387
    • 1988-06-14
    • Wilbert H. HerschlerStephen R. Nelson
    • Wilbert H. HerschlerStephen R. Nelson
    • F16L3/00F16L3/12
    • F16L3/12F16L3/006
    • A waveguide/conduit clamp has a load bearing frame with slotted mounting provisions and two mated center rings, an inner circular member with a center cutout to accommodate a waveguide or other conduit member and an outer circular member with a circular cutout displaced from its centerline by a specified offset. Rotation of the outer member, while maintaining orientation of the central one, results in vertical and horizontal displacement of the cutout in the central unit. When proper vertical distance of the cutout is achieved, the clamp is moved in its slotted mounting base to provide final adjusted position of the central member's waveguide/conduit workpiece. Both circular members have slits allowing their placement around the workpiece and within the clamp's load bearing frame.
    • 波导/管道夹具具有带有开槽安装部件和两个配合的中心环的承载框架,具有中心切口以容纳波导或其它导管构件的内圆形构件和具有圆形切口的外圆形构件,圆形切口从其中心线移位, 指定的偏移量。 外部构件的旋转同时保持中心的定向,导致中心单元中的切口的垂直和水平位移。 当实现切口的适当垂直距离时,夹具在其开槽安装基座中移动,以提供中心构件的波导管道工件的最终调整位置。 两个圆形构件具有允许它们放置在工件周围并且在夹具的承载框架内的狭缝。
    • 10. 发明授权
    • Small aspect ratio MMIC power amplifier layout
    • 小宽高比MMIC功率放大器布局
    • US06545543B2
    • 2003-04-08
    • US09900562
    • 2001-07-06
    • Stephen R. Nelson
    • Stephen R. Nelson
    • H03F314
    • H01L27/088H01L27/0207H01L2224/49111H01L2924/01055H01L2924/12032H01L2924/13063H01L2924/14H01L2924/1423H01L2924/00
    • A small aspect ratio, high power MMIC amplifier is disclosed. The small aspect ratio MMIC amplifier is capable of achieving the same power levels as conventional power amplifier designs, but with an aspect ratio of near 1:1, versus 4:1 of conventional power amplifiers. The small aspect ratio MMIC amplifier layout uses two different types of FETs, with all gate fingers of both types of FETs running in the same direction. One type of FET is a conventional FET, in which the gate stripes run parallel to the direction of the output. In the conventional FET, the gate manifold and the drain manifold both generally extend in the x-direction (parallel to each other). The other type of FET has gate fingers that run perpendicular to the direction of the output. In this other type of FET, the gate manifold generally extends in the x-direction, while the drain manifold generally extends in the y-direction (perpendicular to each other). By using two different types of FETs, large gate width power FETs can be placed on two, three or four sides of the MMIC.
    • 公开了一种小尺寸比的高功率MMIC放大器。 小尺寸比MMIC放大器能够实现与传统功率放大器设计相同的功率水平,但是与常规功率放大器相比,其纵横比接近1:1,而4:1。 小尺寸比MMIC放大器布局使用两种不同类型的FET,两种类型的FET的所有栅极指针在相同方向上运行。 一种类型的FET是常规FET,其中栅极条平行于输出的方向延伸。 在传统的FET中,门歧管和排水歧管两者通常在x方向(彼此平行)延伸。 另一种类型的FET具有垂直于输出方向延伸的栅极指状物。 在这种其他类型的FET中,门歧管通常在x方向上延伸,而排水歧管通常沿y方向(彼此垂直)延伸。 通过使用两种不同类型的FET,可以将大栅极宽度功率FET放置在MMIC的两侧,三侧或四侧。