Title:
REFLUX CONDENSER
Document Type and Number:
WIPO Patent Application WO/2009/094103
Kind Code:
A8
Abstract:
Methods, apparatus, and processes are provided for a condenser including flowing a vapor stream including formaldehyde into a tube bundle in a vertical upflow reflux condenser, where a tube in the tube bundle has a length to outside diameter ratio of greater than about 170:1, flowing a cooling fluid on a shell-side of the vertical upflow reflux condenser to condense at least a portion of the vapor stream, where the condensed portion of the vapor stream forms a wetted tube internal surface area on each tube in the generally upright tube bundle; and maintaining the vapor stream velocity at a rate that provides a liquid residence time where formaldehyde condensed on the wetted internal surface area of each tube can react with water to form methylene glycol, removing at least sixty percent (60%) of formaldehyde from the vapor stream fed to the condenser.
Inventors:
RHODES II CLYDE L (US)
SZUL JOHN F (US)
CONNEWAY FRED A (US)
SZUL JOHN F (US)
CONNEWAY FRED A (US)
Application Number:
PCT/US2009/000121
Publication Date:
September 10, 2010
Filing Date:
January 09, 2009
Export Citation:
Assignee:
DOW TECHNOLOGY INVESTMENTS LLC (US)
RHODES II CLYDE L (US)
SZUL JOHN F (US)
CONNEWAY FRED A (US)
RHODES II CLYDE L (US)
SZUL JOHN F (US)
CONNEWAY FRED A (US)
International Classes:
B01D3/04; B01D5/00; B01J19/24; C07D301/32
Attorney, Agent or Firm:
HUEBSCH, Joseph C. et al. (Cameron & Huebsch PLLC,1221 Nicollet Avenue,Suite 50, Minneapolis MN, US)
Download PDF:
Previous Patent: MULTI-LAYER PAPERMAKER'S FABRIC WITH LONG MACHINE SIDE MD FLOATS
Next Patent: VALVE FOR DECORATIVE DISPENSING
Next Patent: VALVE FOR DECORATIVE DISPENSING