Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2006-06-27
2006-06-27
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C568S479000
Reexamination Certificate
active
07067696
ABSTRACT:
In the process for producing (meth)acrolein or (meth)acrylic acid, which comprises feeding a raw material of the (meth)acrolein or (meth)acrylic acid, and a molecular oxygen-containing gas mixed with a diluting gas and compressed by a compressor, to an oxidation reactor to conduct a catalytic gas-phase oxidation reaction therebetween; feeding the obtained reaction gas to an absorption column to contact with water; recovering an aqueous solution of the (meth)acrolein or (meth)acrylic acid from a bottom of the absorption column and an exhaust gas from a top of the absorption column; and recycling a part or whole of the thus recovered exhaust gas to use as the diluting gas, the temperature of the mixed gas at a suction inlet of the compressor is controlled to a temperature higher than a dew point thereof. According to the process of the present invention, the compressor is prevented from suffering from clogging or damage thereto.
REFERENCES:
patent: 4031135 (1977-06-01), Engelbach et al.
patent: 4147885 (1979-04-01), Shimizu et al.
patent: 4365087 (1982-12-01), Kadowaki et al.
patent: 2001/0003783 (2001-06-01), Nishimura et al.
patent: 0 990 636 (2000-04-01), None
patent: 53-15314 (1978-02-01), None
Hosaka Hirochika
Ogawa Yasushi
Sakakura Yasuyuki
Suzuki Yoshiro
Yada Shuhei
Mitsubishi Chemical Corporation
Nixon & Vanderhye P.C.
Zucker Paul A.
LandOfFree
Process for producing (meth)acrolein or (meth)acrylic acid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing (meth)acrolein or (meth)acrylic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing (meth)acrolein or (meth)acrylic acid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3685523