Steps in a process for the production of at least one alkyl tertiobutyl
ether from natural gas
    1.
    发明授权
    Steps in a process for the production of at least one alkyl tertiobutyl ether from natural gas 失效
    从天然气生产至少一种烷基叔丁基醚的方法中的步骤

    公开(公告)号:US5659090A

    公开(公告)日:1997-08-19

    申请号:US545533

    申请日:1995-10-19

    IPC分类号: C07C41/01 C07C41/06 C07C41/00

    CPC分类号: C07C41/01 C07C41/06

    摘要: The invention concerns steps in a process for the synthesis of at least one alkyl tertiobutyl ether, preferably respectively MTBE or ETBE, from at least one alcohol and from isobutene, each synthesized at least partially from natural gas. The alcohol, preferably methanol or ethanol respectively, is synthesized at least partially from synthesis gas, a portion of said synthesis gas being prepared in a natural gas steam prereforming zone. The isobutene is synthesized in a series of processes which includes direct transformation of natural gas to ethylene, known as oxidative coupling of methane (OCM), dimerisation of ethylene to normal butene, isomerisation of n-butene to isobutene, and the separation units associated therewith.

    摘要翻译: 本发明涉及从至少一种醇和异丁烯合成至少一种烷基叔丁基醚,优选分别为MTBE或ETBE的方法中的步骤,每一种至少部分由天然气合成。 醇,优选甲醇或乙醇分别由合成气至少部分合成,所述合成气的一部分在天然气蒸汽预成形区中制备。 在一系列方法中合成异丁烯,这些方法包括将天然气直接转化为乙烯,称为甲烷(OCM)的氧化偶联,乙烯二聚成正丁烯,正丁烯异构化成异丁烯,以及与之相关的分离单元 。

    Process for the production of at least one alkyl tertiobutyl ether from
natural gas
    2.
    发明授权
    Process for the production of at least one alkyl tertiobutyl ether from natural gas 失效
    从天然气生产至少一种烷基叔丁基醚的方法

    公开(公告)号:US5523493A

    公开(公告)日:1996-06-04

    申请号:US324145

    申请日:1994-10-17

    IPC分类号: C07C41/01 C07C41/06 C07C41/00

    CPC分类号: C07C41/01 C07C41/06

    摘要: The invention concerns a process for the synthesis of at least one alkyl tertiobutyl ether, preferably respectively MTBE or ETBE, from at least one alcohol and from isobutene, each synthesized at least partially from natural gas. The alcohol, preferably methanol or ethanol respectively, is synthesized at least partially from synthesis gas, a portion of said synthesis gas being prepared in natural gas steam prereforming zone. The isobutene is synthesized in a series of processes which includes direct transformation of natural gas to ethylene, known as oxidative coupling of methane (OCM), dimerization of ethylene to normal butene, isomerization of n-butene to isobutene, and the separation units associated therewith.

    摘要翻译: 本发明涉及从至少一种醇和异丁烯合成至少一种烷基叔丁基醚(优选分别为MTBE或ETBE)的方法,每种至少部分由天然气合成。 醇,优选甲醇或乙醇分别由合成气至少部分合成,所述合成气的一部分在天然气蒸汽预变形区中制备。 异丁烯是通过一系列方法合成的,其中包括将天然气直接转化为乙烯,称为甲烷的氧化偶联(OCM),乙烯向正丁烯的二聚,正丁烯异构化为异丁烯,以及与其相关的分离单元 。

    Multipoint-to-point tdma transmission system using a particular burst structure, and a corresponding transmitter
    3.
    发明授权
    Multipoint-to-point tdma transmission system using a particular burst structure, and a corresponding transmitter 有权
    使用特定突发结构的多点到点tdma传输系统,以及相应的发射机

    公开(公告)号:US06731615B1

    公开(公告)日:2004-05-04

    申请号:US09551493

    申请日:2000-04-18

    IPC分类号: H04B7212

    CPC分类号: H04J3/07 H04B7/2643

    摘要: The invention relates in particular to a TDMA transmission system including transmitters synchronized to a single receiver, each of the transmitters being able to transmit to the receiver on a given carrier frequency bursts with lengths which are all multiples of that of a unit burst including a guard time, the unit bursts including at least one guard time and the receiver being adapted to receive simultaneously bursts from different transmitters. According to the invention, each transmitter includes means for inserting a filler sequence into each burst to be transmitted at each location of the burst that is likely to correspond to a guard time in a burst received simultaneously on a different carrier frequency. The invention reduces the harmful effects of interference if the time of reception of the guard time of a burst on a first carrier frequency corresponds to the time of reception of information symbols in another burst received simultaneously on another carrier frequency.

    摘要翻译: 本发明具体涉及一种包括与单个接收机同步的发射机的TDMA传输系统,每个发射机能够以给定的载波频率突发发射,其长度与包括卫星的单位脉冲串的倍数相同 所述单元突发包括至少一个保护时间,并且所述接收机适于同时接收来自不同发射机的突发。 根据本发明,每个发射机包括用于将插入序列插入到每个突发中的装置,以在突发中的每个位置处发送,这可能对应于在不同载波频率上同时接收的突发中的保护时间。 如果在第一载波频率上的突发的保护时间的接收时间对应于在另一载波频率上同时接收的另一个突发中的信息符号的接收时间,本发明减少了干扰的有害影响。

    Hydrotreatment for petroleum cuts with offretite
    5.
    发明授权
    Hydrotreatment for petroleum cuts with offretite 失效
    石油馏分加氢处理

    公开(公告)号:US4497703A

    公开(公告)日:1985-02-05

    申请号:US479212

    申请日:1983-03-28

    CPC分类号: C10G45/64 B01J29/58

    摘要: The present invention concerns a hydrotreatment process for petroleum cuts, in order to achieve simultaneously their desulfurization and the improvement of their flow properties.The process comprises treating the cuts in the presence of a catalytic system based on a zeolitic crystalline silico aluminate of the offretite type, wherein the synthetic offretite used has a crystalline structure identical to natural offretite and has the chemical formula (M.sub.1 M.sub.2 . . . ).sub.2 (Al.sub.2 O.sub.3) (SiO.sub.2).sub.y in which y is comprised between 10 and 50, M.sub.1 and M.sub.2 are selected from among cations of group I and II of the Periodic Table of Elements and this offretite is associated with a bimetallic catalyst comprising a mixture of an oxide or sulfide of a metal selected from among the group comprising chromium, molybdenum and tungsten with an oxide or a sulfide of a metal selected from among the group comprising iron, cobalt and nickel.

    摘要翻译: 本发明涉及用于石油馏分的加氢处理方法,以便同时实现其脱硫和其流动性能的改善。 该方法包括在催化体系的存在下处理切片,所述催化体系基于所述非晶型的沸石结晶硅铝酸盐,其中使用的合成精矿具有与天然发色团相同的结晶结构,并具有化学式(M1 M2 ...) 2(Al 2 O 3)(SiO 2)y,其中y为10至50,M1和M2选自元素周期表的第I和II族的阳离子,并且该黑云母与双金属催化剂相关, 选自包括铬,钼和钨的金属的氧化物或硫化物与选自铁,钴和镍的金属的氧化物或硫化物。

    Method of controlling power in a transmission link between a transmitter and a receiver in a point to multi-point communication network and system for carrying out said method
    8.
    发明授权
    Method of controlling power in a transmission link between a transmitter and a receiver in a point to multi-point communication network and system for carrying out said method 有权
    控制发射机与接收机之间的传输链路中的功率在多点通信网络和系统中执行所述方法的方法

    公开(公告)号:US06650906B1

    公开(公告)日:2003-11-18

    申请号:US09659606

    申请日:2000-09-11

    IPC分类号: H04B700

    CPC分类号: H04W52/24

    摘要: A method of controlling power in a transmission link between a central station and a terminal in a point to multi-point communication network and system for carrying out the method, particularly suitable for implementation in satellite access networks or terrestrial point to multi-point access networks. A transmitter transmits a plurality of reference signals (4) to a plurality of receivers (2); each receiver (2) measures the respective quality of the signals so as to determine a reference signal (4) corresponding to the receiver (2); each receiver (2) indicates to the transmitter (1) the reference signal (4) corresponding thereto; and if required, the transmitter (1) adjusts the power level of transmission of the traffic data (3).

    摘要翻译: 一种在多点通信网络和系统的点到中心站和终端之间的传输链路中的功率的控制方法,用于执行该方法,特别适用于在卫星接入网络或地面点到多点接入网络中的实现 。 发射机将多个参考信号(4)发射到多个接收机(2); 每个接收机(2)测量信号的相应质量,以便确定对应于接收机(2)的参考信号(4); 每个接收机(2)向发射机(1)指示对应于其的参考信号(4); 并且如果需要,发射机(1)调整业务数据(3)的发射功率电平。

    Method and catalyst for forced catalytic deoxygenation of sea water
    9.
    发明授权
    Method and catalyst for forced catalytic deoxygenation of sea water 失效
    海水强制催化脱氧方法及催化剂

    公开(公告)号:US5725781A

    公开(公告)日:1998-03-10

    申请号:US553474

    申请日:1996-01-11

    摘要: Sea water previously filtered and temperature controlled, and which includes added hydrogen is continuously pumped at a constant rate to a deoxygenation reactor containing a divided platinum catalyst on a granular activated carbon support. The deoxygenated sea water is continuously discharged from the reactor through a line. The divided platinum of the catalyst is present in a superficial layer of the support grains and the platinum dispersion in the catalyst grains is at least 10%.

    摘要翻译: PCT No.PCT / FR95 / 00276 Sec。 371日期1996年1月11日 102(e)日期1996年1月11日PCT 1995年3月10日PCT PCT。 公开号WO95 / 24360 PCT 日期1995年9月14日先前过滤和温度控制的水,其中包括加入的氢气以恒定速率连续泵送到在粒状活性炭载体上含有分开的铂催化剂的脱氧反应器。 脱氧海水通过管线从反应器中连续排出。 催化剂的分开的铂存在于载体颗粒的表面层中,催化剂颗粒中的铂分散体为至少10%。

    Prepartion of vinyl chloride by ultrapyrolysis of 1,2-dichloroethane
    10.
    发明授权
    Prepartion of vinyl chloride by ultrapyrolysis of 1,2-dichloroethane 失效
    通过1,2-二氯乙烷超分解法制备氯乙烯

    公开(公告)号:US5488190A

    公开(公告)日:1996-01-30

    申请号:US49498

    申请日:1993-04-21

    IPC分类号: C07C21/06 C07C17/25

    CPC分类号: C07C17/25

    摘要: Vinyl chloride monomer is selectively prepared by intimately contacting, in the absence of steam, a feedstream of 1,2-dichloroethane with a flow of fluid or solid particulates heated to such elevated temperature and for such minim period of time, e.g., 0.010 to 0.5 second, as to flash transfer a dehydrochlorinating amount of thermal energy to the 1,2-dichloroethane and thereby ultrapyrolyzing at least a fraction of same into vinyl chloride and HCl, and recovering the vinyl chloride from the medium of ultrapyrolysis.

    摘要翻译: 选择性地制备氯乙烯单体,在不存在蒸汽的情况下,将1,2-二氯乙烷的原料流与加热到这种升高的温度的流体或固体微粒的流动紧密接触,并且在这样最短的时间内,例如0.010至0.5 第二,闪蒸将脱氯化氢的量转移到1,2-二氯乙烷中,从而将其至少一部分超分子量化成氯乙烯和HCl,并从超分解介质中回收氯乙烯。