公开(公告)号：US20090023958A1

公开(公告)日：2009-01-22

申请号：US11665112

申请日：2005-08-19

申请人： Ki-won Jun ,  Hyun-seog Roh ,  Jae-woo Kim ,  Jeonkeun Oh ,  Jinhwan Bang

发明人： Ki-won Jun ,  Hyun-seog Roh ,  Jae-woo Kim ,  Jeonkeun Oh ,  Jinhwan Bang

IPC分类号： C07C41/09

CPC分类号： C07C41/09 ,  C07C41/01 ,  C07C43/043

摘要： The present invention relates a process for preparing dimethyl ether from crude methanol in an adiabatic reactor(s)/and more particularly to a process for preparing dimethyl ether wherein crude methanol containing water is dehydrated by using (1) a catalytic system in which the reactant contacts a catalyst 1 of hydrophobic zeolite partially substituted by a specific metal cation and subsequently a catalyst 2 selected from γ-alumina or silica-alumina; and (2) an adiabatic reactor(s). In the present invention, the dehydration is accomplished effectively by avoiding the formation or byproducts and the deactivation of catalyst. Therefore, dimethyl ether useful as clean fuel and a raw material in chemical industry can be produced from crude methanol with an enhanced yield in an adiabatic reactor(s).

摘要翻译： 本发明涉及一种在绝热反应器中由粗甲醇制备二甲醚的方法，更具体地涉及一种制备二甲醚的方法，其中含有粗甲醇的水通过使用（1）催化体系脱水，其中反应物 接触部分被特定金属阳离子取代并且随后选自γ-氧化铝或二氧化硅 - 氧化铝的催化剂2的疏水性沸石的催化剂1; 和（2）绝热反应器。 在本发明中，通过避免形成或副产物和催化剂的失活来有效地实现脱水。 因此，用作清洁燃料的二甲醚和化学工业中的原料可以在绝热反应器中以粗甲醇生产，产率提高。

公开(公告)号：US07391171B2

公开(公告)日：2008-06-24

申请号：US11290446

申请日：2005-12-01

申请人： Jae-woo Kim ,  Woon-suk Chang

发明人： Jae-woo Kim ,  Woon-suk Chang

IPC分类号： H05B37/02

CPC分类号： H05B41/386 ,  G09G3/3406 ,  G09G2310/066 ,  G09G2320/0247 ,  G09G2320/041 ,  G09G2330/02 ,  G09G2330/026 ,  H05B41/2856 ,  H05B41/382 ,  H05B41/39 ,  Y02B20/186

摘要： A display apparatus is provided having an LCD panel and a backlight unit to illuminate the LCD panel, and further including a temperature sensor to sense the temperature of the backlight unit, an inverter to drive the backlight unit, a power supply to supply power to the inverter, and a controller to control the power supply to supply an initial voltage that is higher than a normal voltage when the power is initially supplied, and gradually lower the voltage applied to the inverter to return to a substantially normal voltage in the case where the temperature of the backlight unit is higher than a predetermined normal temperature or when a time period has passed. Thus, the display apparatus and control method thereof reduce the time taken to stabilize brightness when initially driving a display apparatus, and display a stable and high-quality picture.

摘要翻译： 提供一种显示装置，具有LCD面板和背光单元以照亮LCD面板，并且还包括用于感测背光单元的温度的温度传感器，驱动背光单元的逆变器，向 逆变器和控制器，用于控制电源以在初始供电时提供高于正常电压的初始电压，并且在施加到逆变器的电压下逐渐降低以恢复到基本正常的电压，在这种情况下， 背光单元的温度高于预定的常温或经过时间段。 因此，显示装置及其控制方法在最初驱动显示装置时减少了稳定亮度所需的时间，并且显示出稳定且高质量的图像。