Method and apparatus for separating aromatic dialdehyde

Details Method and apparatus for separating aromatic dialdehyde Method and apparatus for separating aromatic dialdehyde

2008-06-02

2010-06-22

Griffin, Walter D (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

C422S200000, C422S211000, C568S428000, C568S431000, C568S476000, C568S420000, C568S425000, C062S601000, C062S617000

Reexamination Certificate

active

07740812

ABSTRACT:
The present invention relates to a method and an apparatus for continuously separating aromatic dialdehyde from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene. The method for continuously separating aromatic dialdehyde includes the steps of congealing aromatic dialdehyde by cooling the gas-phase reaction mixture including the aromatic dialdehyde, which is obtained by gas-phase oxidation of dimethylbenzene, to 5-70° C. and separating the congealed aromatic dialdehyde from the remaining reaction mixture. Using the method and apparatus in accordance with the present invention, aromatic dialdehyde can be effectively and selectively separated from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene in high yield.

REFERENCES:
patent: 2888488 (1959-05-01), Nace
patent: 3374637 (1968-03-01), Wenzke
patent: 3404155 (1968-10-01), Huter et al.
patent: 3845137 (1974-10-01), Magder
patent: 3946067 (1976-03-01), Kwiatek et al.
patent: 4017547 (1977-04-01), Simmons et al.
patent: 4174381 (1979-11-01), Reeves et al.
patent: 4190963 (1980-03-01), Christensen et al.
patent: 4465865 (1984-08-01), Englander et al.
patent: 4478606 (1984-10-01), Dorling et al.
patent: 4625056 (1986-11-01), Graham et al.
patent: 4685419 (1987-08-01), Nakajima
patent: 5126492 (1992-06-01), Milstein et al.
patent: 5483801 (1996-01-01), Craze
patent: 5645620 (1997-07-01), Shenker
patent: 6287622 (2001-09-01), Villagran et al.
patent: 6458737 (2002-10-01), Kishimoto et al.
patent: 2005/0077241 (2005-04-01), Alkhalidl
patent: 2005/0095333 (2005-05-01), Martel et al.

Affiliated with

Also associated with

Rating

Method and apparatus for separating aromatic dialdehyde does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for separating aromatic dialdehyde, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for separating aromatic dialdehyde will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4223319