Method for sulphurizing a UO2 powder and method for making nuclear fuel pellets based on UO2 or mixed oxide (U,Pu)O2 oxide with added sulphur
    1.
    发明授权
    Method for sulphurizing a UO2 powder and method for making nuclear fuel pellets based on UO2 or mixed oxide (U,Pu)O2 oxide with added sulphur 有权
    用于硫化UO2粉末的方法和基于UO2或混合氧化物(U,Pu)O 2氧化物与添加硫制备核燃料颗粒的方法

    公开(公告)号:US07309473B2

    公开(公告)日:2007-12-18

    申请号:US10482541

    申请日:2002-07-01

    IPC分类号: C01G43/025

    CPC分类号: G21C3/623 Y02E30/38

    摘要: Sulphidation method for a UO2 powder, in which said powder is sulfurated by bringing it into contact with a gaseous sulphidation agent.Method for manufacturing nuclear fuel pellets based on uranium oxide, or mixed oxide of uranium and plutonium, from a load of totally or partially sulfurated UO2 powder or UO2 powder and PuO2 powder, by lubrication, pelletizing and sintering, in which: the load of powder subjected to the lubrication, pelletizing and sintering is prepared by the following successive steps: sulphidation of a UO2 powder by the above sulphidation method; optionally mixing, said sulfurated powder in a matrix comprising a UO2 powder, or of a UO2 powder and a PuO2 powder; and, subjecting said load, formed from said sulfurated powder or said mixture, to lubrication, pelletizing and sintering operations.

    摘要翻译: 通过使其与气态硫化剂接触来将所述粉末硫化,从而对其进行硫化处理。 用于制备基于氧化铀或铀和钚的混合氧化物的核燃料颗粒从完全或部分硫化的UO 2粉末或UO 2 N 2粉末和PuO的负载中制备的方法 通过润滑,造粒和烧结,其中:通过以下连续步骤制备经受润滑,造粒和烧结的粉末的负载:U 2 O 2的硫化, SUB>粉末通过上述硫化方法; 任选地将所述硫化粉末混合在包含二氧化钛粉末或二氧化钛粉末和PuO 2粉末的基质中; 并且将由所述硫化粉末或所述混合物形成的所述负载进行润滑,造粒和烧结操作。

    PROCESS AND APPARATUS FOR PRODUCING OLEFINS WITH HEAT TRANSFER FROM STEAM CRACKING TO ALCOHOL DEHYDRATION PROCESS
    2.
    发明申请
    PROCESS AND APPARATUS FOR PRODUCING OLEFINS WITH HEAT TRANSFER FROM STEAM CRACKING TO ALCOHOL DEHYDRATION PROCESS 有权
    用于从蒸汽破碎转移到酒精脱水过程中生产烯烃的方法和装置

    公开(公告)号:US20140114104A1

    公开(公告)日:2014-04-24

    申请号:US14124757

    申请日:2012-06-26

    IPC分类号: C07C2/06 C07C1/24 C07C4/04

    摘要: A method of producing ethylene and, optionally, propylene comprising: a) subjecting a feedstock to steam cracking to produce a first olefin containing stream; b) heating an ethanol containing stream with heat from a steam cracker; c) passing the heated ethanol containing stream over a dehydration catalyst at a temperature between 200 C to 500 C preferably 250 C to 450 C to produce a second olefin containing stream; d) combining the first and second olefin containing streams to give an initial product stream comprising ethylene and optionally propylene; and e) subjecting the initial product stream to purification comprising at least i) water content reduction ii) hydrogen content reduction iii) reduction of content of molecules containing 4 or more carbon atoms and iv) ethane content reduction.

    摘要翻译: 一种生产乙烯和任选的丙烯的方法,包括:a)使原料进行蒸汽裂化以产生含第一烯烃的料流; b)用来自蒸汽裂解器的热量加热含乙醇的流; c)在200℃至500℃,优选250℃至450℃的温度下将经过加热的含乙醇的料流通过脱水催化剂,以产生第二烯烃流; d)将第一和第二烯烃流合并,得到包含乙烯和任选的丙烯的初始产物流; 和e)对初始产物流进行纯化,包括至少i)含水量降低ii)氢含量降低iii)减少含有4个或更多个碳原子的分子的含量和iv)乙烷含量降低。