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1.发明授权Process for preparing ethylene and/or propylene and an iso-olefin-depleted olefinic product 失效用于制备乙烯和/或丙烯的方法和消耗烯烃的异烯烃产物公开(公告)号：US08742188B2
公开(公告)日：2014-06-03
申请号：US13606269
申请日：2012-09-07
申请人： Leslie Andrew Chewter , Rajaram Ramesh , Sivakumar Sadasivan Vijayakumari , Jeroen Van Westrenen
发明人： Leslie Andrew Chewter , Rajaram Ramesh , Sivakumar Sadasivan Vijayakumari , Jeroen Van Westrenen
IPC分类号： C07C2/00
CPC分类号： C07C1/22 , B01J29/40 , B01J29/7042 , B01J29/7046 , B01J29/90 , B01J37/28 , B01J2229/186 , C07C1/20 , C07C29/48 , C07C41/06 , C07C2529/40 , C07C2529/70 , C07C2529/83 , C07C2529/85 , C07D301/03 , C10G3/49 , C10G11/05 , C10G50/00 , C10G57/02 , C10G2400/20 , C10L1/023 , Y02P20/52 , Y02P20/584 , Y02P30/42 , C07C43/046 , C07C11/04 , C07C11/06
摘要： The present invention provides a process for preparing ethylene and/or propylene and an iso-olefin-depleted olefinic product, comprising the steps of: a) providing a C5 hydrocarbon-comprising stream, comprising C5 cyclopentene and C5 iso-olefins; b) subjecting the C5 hydrocarbon-comprising stream to an etherification process with methanol and/or ethanol wherein at least part of the C5 iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether, and retrieving an etherification product stream; c) separating at least part of the etherification product stream into at least an ether-enriched stream and a first iso-olefin-depleted olefinic product; d) converting at least part of the tert-alkyl ether in the ether-enriched stream to ethylene and/or propylene by contacting at least part of the ether-enriched stream with a molecular sieve-comprising catalyst at a temperature in the range of from 350 to 1000° C. and retrieving a second olefinic product comprising ethylene and/or propylene.
摘要翻译： 本发明提供一种制备乙烯和/或丙烯和异烯烃贫乏烯烃产物的方法，包括以下步骤：a）提供包含C5环戊烯和C5异烯烃的含C5烃流; b）使含C5烃的料流经甲醇和/或乙醇进行醚化处理，其中至少部分的C5异烯烃用甲醇和/或乙醇转化成叔烷基醚，并回收醚化产物流 ; c）将至少部分醚化产物流分离成至少一种富醚流和第一异烯烃贫化烯烃产物; d）通过使至少部分富含乙醚的料流与含分子筛的催化剂在至少一部分乙醚和/或丙烯的温度范围内接触，将至少部分乙醚富集流中的叔烷基醚转化为 并回收包含乙烯和/或丙烯的第二烯烃产物。
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公开(公告)号：US08779226B2
公开(公告)日：2014-07-15
申请号：US13606333
申请日：2012-09-07
IPC分类号： C07C2/00
CPC分类号： C07C1/22 , C07C1/20 , C07C29/04 , C07C2521/04 , C07C2521/06 , C07C2521/08 , C07C2521/12 , C07C2521/16 , C07C2529/40 , C07C2529/70 , C07C2529/83 , C07C2529/84 , C07C2529/85 , C07D301/03 , Y02P30/42 , C07C11/04 , C07C11/06
摘要： The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of: a) providing an oxygenate-comprising feedstock; b) contacting the oxygenate-comprising feedstock with a molecular sieve-comprising catalyst at a temperature in the range of from 450 to 700° C. and converting at least part of the oxygenate into an olefinic product comprising ethylene and/or propylene; and c) retrieving the olefinic product, wherein the oxygenate-comprising feedstock comprises in the range of from 1 to 97 wt % of at least one tert-alkyl ether selected from the group MTBE, ETBE, TAME and TAEE, based on the weight of the oxygenates in the oxygenate-comprising feedstock, and further comprises methanol and/or DME.
摘要翻译： 本发明提供一种制备乙烯和/或丙烯的方法，包括以下步骤：a）提供含氧化合物的原料; b）使含氧化合物的原料与含分子筛的催化剂在450-700℃的温度下接触，并将至少部分含氧化合物转化为包含乙烯和/或丙烯的烯烃产物; 和c）回收所述烯烃产物，其中所述含氧化合物的原料包含1至97重量％的至少一种选自MTBE，ETBE，TAME和TAEE的叔烷基醚，基于 含氧化合物原料中的含氧化合物，还包含甲醇和/或DME。
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公开(公告)号：US08754280B2
公开(公告)日：2014-06-17
申请号：US13606308
申请日：2012-09-07
申请人： Leslie Andrew Chewter , Rajaram Ramesh , Sivakumar Sadasivan Vijayakumari , Jeroen Van Westrenen
发明人： Leslie Andrew Chewter , Rajaram Ramesh , Sivakumar Sadasivan Vijayakumari , Jeroen Van Westrenen
IPC分类号： C07C1/20
CPC分类号： C07C1/22 , C07C1/20 , C07C29/48 , C07C41/06 , C07C2529/40 , C07C2529/70 , C07D301/03 , Y02P30/42 , C07C11/06 , C07C11/04 , C07C43/046
摘要： The present invention provides a method for start-up of an Oxygenate-to-Olefins process, which process comprises the steps: a) providing an oxygenate-comprising feedstock to an Oxygenate-to-Olefins reaction zone and contacting the feedstock with a zeolite-comprising catalyst at a temperature in the range of from 450 to 700° C. ° C., to obtain an reaction product containing olefins; b) separating the reaction product obtained in step a) in at least a product fraction containing ethylene and/or propylene and a product fraction containing C4+ olefins; c) recycling at least part of the C4+ olefins in the product fraction containing C4+ olefins to the Oxygenate-to-Olefins reaction zone in step (a), characterized in that upon start-up the oxygenate-comprising feedstock initially comprises a first amount of externally supplied tert-alkyl ether and subsequently the amount of externally supplied tert-alkyl ether in the oxygenate-comprising feedstock is reduced.
摘要翻译： 本发明提供了一种启动氧化烯 - 烯烃工艺的方法，该方法包括以下步骤：a）将含氧化合物的原料提供到氧化烯 - 烯烃反应区，并使原料与沸石 - 在450-700℃的温度范围内包含催化剂，得到含有烯烃的反应产物; b）将至少含有乙烯和/或丙烯的产物级分和含有C4 +烯烃的产物级分的步骤a）中获得的反应产物分离; c）在步骤（a）中将至少部分含有C4 +烯烃的产物级分中的C4 +烯烃再循环到步骤（a）中的氧化烯 - 烯烃反应区，其特征在于，在启动时，含氧化合物原料最初包含第一量 外部供应的叔烷基醚，随后在含氧化合物的原料中外部供应的叔烷基醚的量减少。
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公开(公告)号：US08704027B2
公开(公告)日：2014-04-22
申请号：US13606189
申请日：2012-09-07
IPC分类号： C07C2/00
CPC分类号： C07C1/22 , C07C1/20 , C07C4/06 , C07C29/48 , C07C2529/42 , C07C2529/70 , C07C2529/83 , C07C2529/85 , C07D301/03 , Y02P30/42 , C07C11/04 , C07C11/06
摘要： The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of contacting a stream comprising C4+ olefins with a zeolite-comprising catalyst to retrieve an olefinic product stream comprising ethylene and/or propylene, and a C4+ hydrocarbon fraction, comprising paraffins, normal olefins and iso-olefins. The C4+ hydrocarbon fraction is subjected to an etherification process with wherein at least part of the iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether and an etherification product stream is retrieved and separated into an ether-enriched stream and an iso-olefin-depleted C4+ hydrocarbon stream. Part of the iso-olefin-depleted C4+ hydrocarbon stream from the process to purge part of the paraffinic C4+ hydrocarbons while another part of the iso-olefin-depleted C4+ hydrocarbon stream is recycled. The tert-alkyl ether in the ether-enriched stream is converted to ethylene and/or propylene by contacting at least part of the ether-enriched stream with a molecular sieve-comprising catalyst.
摘要翻译： 本发明提供一种制备乙烯和/或丙烯的方法，包括以下步骤：使包含C4 +烯烃的料流与含沸石的催化剂接触以回收包含乙烯和/或丙烯的烯烃产物流和C4 +烃馏分，其包含 石蜡，正烯烃和异烯烃。 对C4 +烃馏分进行醚化处理，其中至少部分异烯烃用甲醇和/或乙醇转化成叔烷基醚，并将醚化产物流回收并分离成富醚流， 一种异烯烃贫化的C4 +烃流。 来自该方法的部分烯烃贫化的C4 +烃流，以清除部分链烷烃C4 +烃，而另一部分异烯烃贫化的C4 +烃流被回收。 通过使至少部分富含乙醚的料流与含分子筛的催化剂接触，使富醚流中的叔烷基醚转化为乙烯和/或丙烯。
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5.发明授权公开(公告)号：US08538464B2
公开(公告)日：2013-09-17
申请号：US12346286
申请日：2008-12-30
IPC分类号： H04W68/00
CPC分类号： H04W68/02 , H04W4/08 , H04W72/0466
摘要： Code words are assigned to subscriber stations or groups of subscriber stations in a communication network for a quick paging mechanism in which the assigned code words are transmitted as quick paging signals over unused frequency resources to signal the subscriber stations. Subsets of multiple code words from a set of code words can be assigned to respective paging groups, and overlapping subsets can be assigned to multiple paging groups. This enables a single code word to be used to address either a single paging group or multiple paging groups.
摘要翻译： 代码字被分配给通信网络中的订户站或用户站组，用于快速寻呼机制，其中分配的码字作为快速寻呼信号在未使用的频率资源上发送，以向用户台发信号。 可以将来自一组码字的多个码字的子集分配给各个寻呼组，并且可以将重叠的子集分配给多个寻呼组。 这使得能够使用单个代码字来寻址单个寻呼组或多个寻呼组。
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6.发明授权公开(公告)号：US08144720B2
公开(公告)日：2012-03-27
申请号：US12429468
申请日：2009-04-24
IPC分类号： H04Q11/02
CPC分类号： H04L49/9094 , H04L1/0003 , H04L1/0009 , H04L5/0007 , H04L5/0042 , H04L5/0046 , H04L5/006 , H04L43/0894 , H04L43/16 , H04L47/70 , H04L47/74 , H04L47/781 , H04W28/065 , H04W28/22 , H04W72/044 , H04W72/048 , H04W72/12 , Y02D70/146
摘要： A base station in an OFDMA system which determines a modulation and coding scheme to use for a packet of a certain size to be transmitted by a Mobile Station. The base station schedules transmissions by mobile stations and transmits packets. The base station includes a processing unit which determines a number of time-frequency resources required to transmit the packet for a modulation and coding scheme, determines an SINR based on the number of time-frequency resources used and available power at the mobile station, determines a transmission rate as a ratio of the packet size transmitted to the number of time-frequency resources used, sets a rate to zero if the determined SINR is lower than a threshold SINR required for the modulation and coding scheme, and selects the modulation and coding scheme with a highest transmission rate. The base station includes a memory storing modulation and coding schemes.
摘要翻译： OFDMA系统中的基站，其确定用于要由移动站发送的一定大小的分组的调制和编码方案。 基站调度移动台的传输并发送分组。 基站包括：处理单元，其确定用于调制和编码方案发送分组所需的时间频率资源的数量;基于所使用的时间频率资源的数量和移动站的可用功率来确定SINR，确定 如果发送的分组大小与使用的时间 - 频率资源的数量的比率的传输速率，则如果确定的SINR低于调制和编码方案所需的阈值SINR，则将速率设置为零，并且选择调制和编码 传输速率最高的方案。 基站包括存储调制和编码方案的存储器。
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公开(公告)号：US07796698B2
公开(公告)日：2010-09-14
申请号：US11757731
申请日：2007-06-04
CPC分类号： H04L27/2647 , H04L5/0048 , H04L25/0228
摘要： A receiver uses knowledge of pilot symbols transmitted by a neighboring sector to reduce interference in a received data symbol. The received data symbol is transmitted on one or more data subcarriers in a first sector. Overlapping pilot symbols transmitted on overlapping pilot carriers in a second sector are determined and used to generate channel estimates for the overlapping pilot carriers. The overlapping pilot symbols and pilot channel estimates are then used to reduce interference in the received data symbol.
摘要翻译： 接收机使用由相邻扇区发送的导频符号的知识来减少接收的数据符号中的干扰。 所接收的数据符号在第一扇区中的一个或多个数据子载波上发送。 确定在第二扇区中的重叠导频载波上发送的重叠导频符号，并用于生成重叠导频载波的信道估计。 然后使用重叠导频符号和导频信道估计来减少接收到的数据符号中的干扰。
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公开(公告)号：US20100040174A1
公开(公告)日：2010-02-18
申请号：US11993605
申请日：2005-07-01
申请人： Dennis Hui , Rajaram Ramesh
发明人： Dennis Hui , Rajaram Ramesh
IPC分类号： H04L25/06
CPC分类号： H04L25/063 , H04L25/061
摘要： A method and arrangement for estimating a DC offset for a signal received in a radio receiver. The received signal includes a digitally modulated signal component, a DC offset component, and a noise component. When the signal is of a known type, such as a Gaussian Minimum Shift Keying (GMSK)-modulated signal with constant amplitude in a GSM/EDGE cellular radio system, the method exploits the known characteristics of the statistical distribution for the known type of signal to obtain a better estimate of the DC offset. The statistical distribution of the received digitally modulated signal component is first analyzed. That statistical distribution is then compared to the known statistical distribution for the known type of signal to identify differences. The differences are then used to estimate the DC offset. Additional iterations may be performed to further improve the DC estimate.
摘要翻译： 一种用于估计在无线电接收机中接收的信号的DC偏移的方法和装置。 接收到的信号包括数字调制信号分量，DC偏移分量和噪声分量。 当信号是GSM / EDGE蜂窝无线电系统中具有恒定振幅的已知类型的高斯最小移频键控（GMSK）调制信号时，该方法利用了已知类型信号的已知统计分布特征 以获得对DC偏移的更好的估计。 首先分析接收到的数字调制信号分量的统计分布。 然后将统计分布与已知的信号类型的统计分布进行比较以识别差异。 然后使用差异来估计DC偏移。 可以执行另外的迭代以进一步改善DC估计。
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公开(公告)号：US07558533B2
公开(公告)日：2009-07-07
申请号：US11936193
申请日：2007-11-07
申请人： Carmela Cozzo , Gregory Bottomley , Rajaram Ramesh
发明人： Carmela Cozzo , Gregory Bottomley , Rajaram Ramesh
IPC分类号： H04B15/00
CPC分类号： H04B1/712 , H04B1/7117 , H04B2201/709727
摘要： A receiver is described herein that is capable of receiving and processing a radio signal and further capable of using interpolation to initialize receiver parameters when there is a change in at least one delay associated with the received radio signal or when there is at least one new correlator position. For instance, the receiver parameters that can be initialized include: (1) channel coefficients; (2) AFC parameters; (3) tracking parameters; (4) noise statistics (noise correlations); (5) signal statistics (channel coefficient correlations); (6) data statistics (despread values or chip samples); or (7) combining weights.
摘要翻译： 本文描述了一种接收机，其能够接收和处理无线电信号，并且还能够在存在与所接收的无线电信号相关联的至少一个延迟中的变化时或者当存在至少一个新的相关器时使用内插来初始化接收机参数 位置。 例如，可以初始化的接收机参数包括：（1）信道系数; （2）AFC参数; （3）跟踪参数; （4）噪声统计（噪声相关）; （5）信号统计（信道系数相关）; （6）数据统计（去扩展值或芯片样本）; 或（7）组合权重。
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公开(公告)号：US20090092085A1
公开(公告)日：2009-04-09
申请号：US12138000
申请日：2008-06-12
IPC分类号： H04Q7/00
CPC分类号： H04L27/0008 , H04L1/0083 , H04L1/1607 , H04L5/0007 , H04L5/0091 , H04L25/0204
摘要： A radio access network (RAN) (20) comprise a base station (28) and a wireless terminal (30). The base station 28 comprises a transceiver (38) and a frame handler (40), the wireless terminal (30) comprises a transceiver (48) and a wireless terminal frame handler (50). The frame handlers (40, 50) handle a enhanced frame F having enhanced frame structure. At least a downlink portion of the frame is formatted and handled in a manner whereby the frame can be perceived as a first format type of frame if the wireless terminal is a first type of wireless terminal and perceived as an enhanced or second format type of frame if the wireless terminal is a second type of wireless terminal. The frame handler configures the frame as plural subframes, each subframe having a downlink burst followed by an uplink burst. The frame is preferably configured to afford the second type of wireless terminal sufficient time to develop an acknowledgement for a message transmitted in a downlink burst, the acknowledgement being sent to the base station in an uplink burst which is within one frame length of the message.
摘要翻译： 无线电接入网络（RAN）（20）包括基站（28）和无线终端（30）。 基站（28）包括收发器（38）和帧处理器（40），无线终端（30）包括收发器（48）和无线终端帧处理器（50）。 帧处理器（40,50）处理具有增强的帧结构的增强帧F. 帧的至少下行链路部分被格式化和处理，其中如果无线终端是第一类型的无线终端并且被感知为增强或第二格式类型的帧，则可以将帧感知为第一格式类型的帧 如果无线终端是第二类型的无线终端。 帧处理器将帧配置为多个子帧，每个子帧具有下行链路突发，随后是上行链路突发。 该帧优选地被配置为提供第二类型的无线终端足够的时间以对在下行链路突发中发送的消息进行确认，该确认在消息的一个帧长度内的上行链路突发中被发送到基站。
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