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    • 38. 发明公开
    • CLOUD POINT DEPRESSANTS FOR MIDDLE DISTILLATE FUELS
    • 用于中间馏分燃料的浊点降低剂
    • EP1204726A1
    • 2002-05-15
    • EP00944947.1
    • 2000-06-28
    • Equistar Chemicals L.P.
    • BOTROS, Maged, G.
    • C10L1/18C10L1/22
    • C10L1/1966C10L1/2364
    • An additive for distillate and a fuel composition having improved cloud point depressant properties. The additive is incorporated into a major proportion of distillate fuel and is a maleic anhydride α-olefin copolymer or a polyimide having structure (I): wherein R has at least 80 % by weight of a hydrocarbon substituent from about 14 to about 16 carbons, X is oxygen or N-R' wherein N is nitrogen and R' has at least 80 % by weight of a hydrocarbon substituent from 16 to 18 carbons, and n is from about 2 to about 30 when X is oxygen, and from about 2 to about 17 when X is N-R'. Alternatively, the cloud point additive can be an ethylene vinyl acetate isobutylene terpolymer.
    • 用于馏出物的添加剂和具有改进的浊点抑制性质的燃料组合物。 该添加剂掺入大部分馏分燃料中,并且是具有结构(I)的马来酸酐α-烯烃共聚物或聚酰亚胺:其中R具有至少80重量%的约14至约16个碳的烃取代基, X为氧或NR',其中N为氮且R'具有至少80重量%的16至18个碳的烃取代基,并且当X为氧时,n为约2至约30,以及约2至约 17当X是N-R'时。 或者,浊点添加剂可以是乙烯乙酸乙烯酯异丁烯三元共聚物。
    • 40. 发明授权
    • System and method for monitoring the mechanical condition of a reciprocating compressor
    • 用于监测往复式压缩机的机械状态的系统和方法
    • US07056097B2
    • 2006-06-06
    • US10630053
    • 2003-07-30
    • Andrew W. Lake
    • Andrew W. Lake
    • F04B49/00
    • F04B51/00F04B2201/0604F04B2201/0802F04B2205/01F04B2205/05
    • A method for monitoring the mechanical condition of a reciprocating compressor having a packed-plunger cylinder is provided. An end assembly is attached to one end of the cylinder, and the strain of at least one component of the end assembly is measured as the plunger reciprocates within the cylinder. The measured strain is correlated with a crank angle to facilitate generation of a strain profile. Two pressure values related to the pressure in the cylinder are determined when the plunger is at two different locations. This facilitates generation of a cylinder pressure profile based on the correlated measured strain. The cylinder pressure profile is thus generated without the use of intrusive gauges or sensors, which may create a leak path, or create a stress concentration in the wall of the cylinder.
    • 提供了一种用于监测具有填充柱塞缸的往复式压缩机的机械状态的方法。 端部组件附接到气缸的一端,并且当柱塞在气缸内往复运动时测量端部组件的至少一个部件的应变。 测量的应变与曲轴角度相关,以便于产生应变曲线。 当柱塞在两个不同的位置时,确定与气缸中的压力相关的两个压力值。 这有助于基于相关测量应变产生气缸压力分布。 因此,不使用可能产生泄漏路径的侵入式量规或传感器产生气缸压力分布,或在气缸的壁中产生应力集中。