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260 条记录 (耗时 0.015 秒)

    Method of producing pulp for paper manufacture
    16.
    发明公开
    Method of producing pulp for paper manufacture 失效
    Verfahren zur Herstellung von PulpefürPapierherstellung

    公开(公告)号：EP1249531A2

    公开(公告)日：2002-10-16

    申请号：EP02012855.9

    申请日：1996-12-18

    申请人： M-real Oyj

    发明人： Kettunen, Jyrki ,  Ranua, Jukka

    IPC分类号： D21C5/00 ,  D21C9/10 ,  D21C3/22

    CPC分类号： D21C5/00 ,  D21C3/22

    摘要： The present invention is related to a method of producing easily bleachable paper pulp, in which method selected native specimens of pulpwood trees with an advantageously low content of phenol compounds or phenolic derivatives are produced by micropropagation, the cloned tree specimens are planted and grown to obtain pulping raw material, the pulpwood is harvested, and the pulpwood is produced into paper pulp using mechanical, chemical or chemimechanical delignification methods. Advantageously, the content of parahydroxybenzoic acid (PHBA) is determined from the pulpwood and pulpwood containing low PHBA levels is used as pulping raw material.

    摘要翻译： 本发明涉及一种易于漂白的纸浆的制造方法，其中通过微量繁殖产生选择具有有利的低含量酚化合物或酚类衍生物的纸浆木材的天然样品的方法，将克隆的树样品种植并生长以获得 制浆原料，收获纸浆木浆，并使用机械，化学或化学机械脱木素方法将纸浆木制成纸浆。 有利地，从纸浆木浆中测定对羟基苯甲酸（PHBA）的含量，并将含有低PHBA水平的纸浆木浆用作制浆原料。

    Method of controlling the temperature of a reaction carried out in a fluidised bed reactor
    18.
    发明公开
    Method of controlling the temperature of a reaction carried out in a fluidised bed reactor 有权
    Verfahren zur Steuerung der Reaktionstemperatur innerhalb eines Fliessbettreaktors

    公开(公告)号：EP1247567A1

    公开(公告)日：2002-10-09

    申请号：EP02396041.2

    申请日：2002-04-02

    申请人： EINCO OY

    发明人： Ruottu, Seppo Kalervo ,  Ruottu, Lauri Tapio

    IPC分类号： B01J8/18

    CPC分类号： B01J8/0055 ,  B01J8/1809 ,  B01J8/1836 ,  B01J8/1854 ,  B01J2208/00061 ,  B01J2208/00212 ,  C10G1/10 ,  C10G11/187 ,  F23C10/10 ,  F23C2206/103

    摘要： Method of controlling the temperatures of an exothermic process carried out in a suspension of solids in a reactor system formed by a wind box (2), a vertical riser (5), which is essentially not cooled, a particle separator (6), at least one set of recycling channels (9), which are not cooled, and at least one cooled set of recycling channels (12). According to the invention, the flow of solids travelling through the recycling channel (9), which is no cooled, as adjusted based on the temperature difference (T2-T1) between the upper and lower parts of a riser (5), which is not cooled, and the flow of solids travelling through the heat exchanger (12) is adjusted based on the temperature (T1) of the lower part or the temperature (T2) of the upper part of the riser tube. The control of the riser temperature is thus exclusively based on the regenerative heat transfer of the solids returned from the heat exchangers. In order for the solids returning from the heat exchanger not to create too great a temperature difference in the riser tube, solids that are not cooled are also returned to the lower part of the riser chamber in accordance with the set point control of the temperature difference of the riser tube. As all the temperatures of the thermally insulated riser tube are between the temperatures of its lower and upper parts, a perfect temperature control of the reactor is achieved by means of the simple method according to the invention.

    摘要翻译： 控制在反应器系统中的固体悬浮液中进行的放热过程的温度包括基于上部和下部之间的温差（T2-T1）来调节穿过再循环通道（9）的固体的流动 提升管（5），并且通过基于下部（4）的温度（T1）或提升管的上部的温度（T2）来调节穿过热交换器的固体的流动。 控制在包括风箱（2），基本上未冷却的垂直提升管（5））的反应器系统中的固体悬浮液中进行的放热过程的温度，颗粒分离器（6），至少一组 （12）的回收通道（9）和至少一个冷却的回收通道（12）组合，包括基于温度差（T2-T1）来调节穿过再循环通道（9）的固体的流动， 在升降管的上部和下部之间，并且通过基于下部的温度（T1）或者提升管的上部的温度（T2）调整穿过热交换器的固体的流动。

    PROCESS FOR PREPARING ALKYL ETHERS AND MIXTURES THEREOF
    19.
    发明授权
    PROCESS FOR PREPARING ALKYL ETHERS AND MIXTURES THEREOF 失效
    用于生产醚和MIXES

    公开(公告)号：EP0963367B1

    公开(公告)日：2002-07-24

    申请号：EP96941688.2

    申请日：1996-12-19

    申请人： Fortum Oil and Gas Oy

    发明人： TAMMINEN, Esa ,  LINDQVIST, Petri

    IPC分类号： C07C43/04 ,  C07C41/06 ,  C07C41/42

    CPC分类号： C07C41/42 ,  B01D3/009 ,  C07C41/06 ,  C10L1/023 ,  Y02P20/127 ,  C07C43/046

    摘要： The invention relates to a process for preparing tertiary alkyl ethers, in particular MTBE, ETBE or mixtures of these ethers with heavier ethers. According to the process the feedstock containing hydrocarbons is fed to a catalytic distillation reactor system, in which the isoolefines, in particular the C4 to C7 isoolefines, of the feed are reacted with an alkanol in the presence of a cation exchange resin in order to produce tertiary alkyl ether products. The reaction product containing the ethers is removed from the distillation system as the bottoms product and, if necessary, it is subjected to an additional treatment for producing a gasoline component. The unreacted alkanol is removed as the overhead product of the distillation. According to the invention, the distillate withdrawn mainly contains an azeotrope of C3 hydrocarbons and alkanol, the C3 amount of which at least approximately corresponds to the C3 hydrocarbon concentration of the hydrocarbon feed, a substantial amount of the unreacted alkanol being removed in the form of said azeotrope. By means of the invention the need for a separate alkanol washing unit is eliminated in the apparatus which considerably reduces apparatus investment costs.