公开(公告)号：US5917099A

公开(公告)日：1999-06-29

申请号：US78714

申请日：1998-05-14

申请人： Tomomi Narita ,  Hiroyuki Kobayashi ,  Yukinori Satoh ,  Yoshihiro Shirota

发明人： Tomomi Narita ,  Hiroyuki Kobayashi ,  Yukinori Satoh ,  Yoshihiro Shirota

IPC分类号： C07C17/16 ,  C07C19/03

CPC分类号： C07C17/16 ,  Y02P20/582

摘要： Methyl chloride is prepared by effecting liquid-phase reaction between hydrogen chloride and methanol in the absence of a catalyst. The reaction is effected in divided stages including at least an early stage and a last stage. The early stage of reaction is effected in a stoichiometric excess of hydrogen chloride. The last stage of reaction is effected in a stoichiometric excess of methanol. The invention is industrially advantageous in that methyl chloride can be prepared at a high conversion of hydrogen chloride while suppressing the formation of dimethyl ether by-product.

摘要翻译： 在不存在催化剂的情况下通过在氯化氢和甲醇之间进行液相反应制备甲基氯。 反应分为两个阶段进行，包括至少早期阶段和最后阶段。 反应的早期阶段是在化学计量过量的氯化氢中进行。 反应的最后阶段在化学计量过量的甲醇中进行。 本发明在工业上是有利的，因为氯甲烷的高转化率可以制备甲基氯，同时抑制二甲醚副产物的形成。

公开(公告)号：US06768946B2

公开(公告)日：2004-07-27

申请号：US10254474

申请日：2002-09-25

申请人： Shigemitsu Okabe ,  Tomomi Narita ,  Sakae Taniguchi

发明人： Shigemitsu Okabe ,  Tomomi Narita ,  Sakae Taniguchi

IPC分类号： G01W100

CPC分类号： G01W1/16

摘要： The present invention provides a method and apparatus for locating the position of a lightning strike free of topography-dependent error by calculating a ground point having a difference in propagation distance at receiving stations (R1, R2 and R3) in at least three different locations. The difference in horizontal distance that would result in arrival time differences at the receiving stations is calculated using the horizontal coordinates of the respective stations. The ground point is taken as the tentative lightning strike position (X). The tentative lightning strike position is then corrected to a lightning strike position obtained by evaluating the arrival time difference in terms of the creepage distances (Ls) following depressions and elevations in the ground surface. The depressions and elevations in the ground surface are smoothed to a spatial wavelength that is comparable to the wavelength of the lightning electromagnetic waves.

摘要翻译： 本发明提供一种用于通过计算在至少三个不同位置处的接收站（R1，R2和R3）处的传播距离差异的接地点来定位没有地形相关误差的雷击位置的方法和装置。 使用各个站的水平坐标来计算在接收站处导致到达时间差的水平距离的差异。 将地面点作为暂定雷击位置（X）。 然后将暂时的雷击位置校正为雷击位置，该雷击位置通过评估地面上的凹陷和高度之后的爬电距离（Ls）的到达时间差来获得。 地面上的凹陷和高度被平滑到与雷电电磁波的波长相当的空间波长。