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    • 31. 发明授权
    • Ethylene cracking furnace
    • 乙烯裂解炉
    • US08916030B2
    • 2014-12-23
    • US13124590
    • 2009-10-15
    • Xiou HeGuoqing WangChangli LiLijun ZhangJinke LiChen ShaoGuang LiYuping Guo
    • Xiou HeGuoqing WangChangli LiLijun ZhangJinke LiChen ShaoGuang LiYuping Guo
    • C10G9/14B01J8/00C07C4/02
    • C07C4/02C10G2400/20
    • An ethylene cracking furnace comprising a high pressure steam drum (1), a convection section (2), a radiant section (3), multiple groups of radiant coils (4) arranged vertically in the firebox of radiant section, burners (5) and transfer line exchangers (6), each radiant coil comprising a first-pass tube (7), a second-pass tube (8) and a connection member (9); feedstocks being introduced into an inlet end of the first-pass tube and outflow from an outlet end of the second-pass tube, said first-pass tube (7) and said second-pass tube (8) are non-split coils, and the centerlines of the respective radiant tubes (7, 8) are within a common plane; said connection member (9) is a tridimensional structural member comprising an inlet bending tube (10), a return bending tube (11) and an outlet bending tube (12); said inlet bending tubes (10) and said outlet bending tubes (12) are arranged at two sides of the plane containing the centerlines of said first-pass tubes (7) and said second-pass tubes (8), respectively; the projections of the respective connection members (9) in a side view are the same curve line that is symmetrical, continuous and closed; the inner diameters of said radiant coils (7, 8) is varied at least once along the length of the tubes.
    • 一种乙烯裂解炉,包括高压蒸汽桶(1),对流部分(2),辐射部分(3),在辐射部分的火箱中垂直布置的多组辐射线圈(4),燃烧器(5)和 传输线交换器(6),每个辐射线圈包括第一通道管(7),第二通管(8)和连接构件(9); 原料被引入第一管的入口端并从第二通管的出口端流出,所述第一通管(7)和所述第二通管(8)是非分裂线圈,并且 各辐射管(7,8)的中心线在公共平面内; 所述连接构件(9)是包括入口弯曲管(10),返回弯管(11)和出口弯管(12)的立体结构构件; 所述入口弯管(10)和出口弯管(12)分别布置在包含所述第一通管(7)和所述第二通管(8)的中心线的平面的两侧; 各连接构件(9)的侧视图的突起是对称的,连续的和闭合的相同的曲线; 所述辐射线圈(7,8)的内径沿着管的长度改变至少一次。
    • 39. 发明申请
    • METHOD AND SYSTEM FOR FLEXIBLE FM TUNING
    • 用于柔性FM调谐的方法和系统
    • US20090191828A1
    • 2009-07-30
    • US12418448
    • 2009-04-03
    • Brima IbrahimBojko MarholevLijun Zhang
    • Brima IbrahimBojko MarholevLijun Zhang
    • H04B1/18
    • H04H20/61H03J1/0008H04H20/71Y02D70/14
    • A system for processing signals is disclosed and may include a single chip having an integrated Bluetooth radio and an integrated FM radio. The single chip may include at least one processor that enables selecting from a range of FM channels, a particular frequency for one of the FM channels based on an intermediate frequency (IF). The particular frequency may be selected so that it is an integer multiple of a channel spacing between neighboring allocated FM channels within the range of FM channels, and may be offset by at most one-half the channel spacing. The at least one processor may enable determining a frequency error of the selected particular frequency for the one of the FM channels. The at least one processor may also enable determining, whether the particular frequency includes an on-frequency channel based on the determined frequency error.
    • 公开了用于处理信号的系统,并且可以包括具有集成的蓝牙无线电和集成FM无线电的单个芯片。 单芯片可以包括至少一个处理器,其能够从FM频道的范围中选择基于中频(IF)的FM频道之一的特定频率。 可以选择特定频率,使得它是在FM信道范围内的相邻分配的FM频道之间的信道间隔的整数倍,并且可以偏移最多一半的信道间隔。 所述至少一个处理器可以使得能够确定所述FM频道之一的所选择的特定频率的频率误差。 所述至少一个处理器还可以使得能够基于所确定的频率误差来确定特定频率是否包括频率信道。