Vacuum pumps for low vacuum duty?

[booker]

I am designing a vacuum sillpot (batch) for the distillation of 2,4 difluorobenzophenone from spent Friedel-Crafts catalyst. I propose to use liquid ring vacuum pumps to get me down to a pressure of about 8mm Hg, corresponding to a phenone temperature of 200oC. Can anyone tell me how many of these I am likely to require and how expensive they are. I would prefer to use liquid rings as I don't want a vacuum device that involves mixing of the process fluid with the working fluid. i propose to use the phenone as the liquid seal lso. Does anyone have any ideas

Booker

 

[whylie]

Hi Booker,

I suggest you contact (

http://www.Nashpumps.com)..if

you fail..I have there basic catalogue,may be I can help later

Regards,

Whylie (wayil@hotmail.com)