Title:
EQUIPMENT FOR PRODUCING DIETHYL CARBONATE AND PRODUCTION METHOD USING THE EQUIPMENT
Document Type and Number:
Japanese Patent JP2633111
Kind Code:
B2
Abstract:
PURPOSE: To obtain the highly pure diethyl carbonate from ethanol and ethyl chloroformate in a short time by using the first reaction tank and the second reaction tank equipped with a fractionating tower.
CONSTITUTION: Ethyl chloroformate (ECF) charged in the first reaction tank 1 is heated to 50-70°C with stirring, dropwisely mixed with ethanol (EtOH) in an EtOH/ECF molar ration of 1.0-2.0, and subsequently heated to 110-130°C to produce diethyl carbonate (DEC). The unreacted EtOH and ECF are distilled out from the top of the fractionating tower 2 with the elevation of temperature, condensed in condensers 4, 5, fed into the second reaction tank 3, heated to an inside temperature of 50-70°C, and subsequently converted into the DEC in the second reaction tank 3. The reaction product in the second reaction tank is partially returned to the fractionating tower in order to improve the separation effect of the fractionating tower.
Inventors:
MYAMOTO SHINICHI
WATANUKI JUNICHI
SAKANE YASUO
WATANUKI JUNICHI
SAKANE YASUO
Application Number:
JP18172491A
Publication Date:
July 23, 1997
Filing Date:
June 26, 1991
Export Citation:
Assignee:
NIPPON HORIURETAN KOGYO KK
International Classes:
C07C68/02; C07C68/08; C07C69/96; (IPC1-7): C07C69/96; C07C68/02; C07C68/08
Attorney, Agent or Firm:
Kaji Yoshiyuki