Using methacrolein and methanol as dehydration and absorption ag

Details Using methacrolein and methanol as dehydration and absorption ag Using methacrolein and methanol as dehydration and absorption ag

1998-07-07

1999-10-19

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560210, C07O 6700

Patent

active

059691786

ABSTRACT:
Disclosed is a method for producing methyl methacrylate, which comprises: subjecting isobutylene and/or tert-butanol to a gas phase catalytic oxidation reaction with molecular oxygen to thereby obtain gas (a) containing methacrolein gas and steam; introducing gas (a) and a methacrolein/methanol liquid mixture (I) into a dehydration tower at a lower portion thereof and at an upper portion thereof, respectively, thereby allowing the liquid mixture (I) to flow downwardly in the dehydration tower and contact countercurrently with the gas (a) in the dehydration tower, to thereby obtain a dehydrated gas mixture (b) containing methacrolein gas and methanol gas; introducing the dehydrated gas mixture (b) and a methacrolein/methanol liquid mixture (II) into an absorption tower at a lower portion thereof and at an upper portion thereof, respectively, thereby allowing the liquid mixture (II) to flow downwardly and contact countercurrently with the dehydrated gas mixture (b) in the absorption tower, thereby obtaining a methacrolein/methanol liquid mixture (III); and introducing the liquid mixture (III) into a reactor and subjecting the methacrolein and methanol, which are contained in the liquid mixture (III), to an oxidative esterification reaction in the reactor in the presence of molecular oxygen and in the presence of a palladium catalyst.

REFERENCES:
patent: 2514966 (1950-07-01), Pierotti et al.
patent: 4249019 (1981-02-01), Tamura et al.
patent: 4329513 (1982-05-01), Aoshima et al.
patent: 4518462 (1985-05-01), Aoshima et al.

Affiliated with

Also associated with

Rating

Using methacrolein and methanol as dehydration and absorption ag does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Using methacrolein and methanol as dehydration and absorption ag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using methacrolein and methanol as dehydration and absorption ag will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2057555