Method for handling waste oil
First Claim
1. A method for producing (meth)acrylic acid or ester thereof comprising:
- providing a reaction gas generated by oxidizing propylene and/or acrolein in contact with a gas containing molecular state oxygen, or a reaction gas generated by oxidizing at least one member selected from isobutylene, t-butyl alcohol and methacrolein in contact with a gas containing molecular state oxygen;
treating the reaction gas to produce a (meth)acrylic acid solution; and
purifying the (meth)acrylic acid solution to produce (meth)acrylic acid, wherein waste oil produced during the method and which contains (meth)acrylic acid or ester thereof is coexisted with a solvent.
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Abstract
The present invention provides a method for stabilizing waste oil which is taken of each chemical apparatus of the manufacturing line of (meth)acryl acid and/or ester thereof, and treating the waste oil such as draining it out of the production apparatus, for example, a distillation tower from its bottom, sending and transporting it by a pump through a pipeline, and storing it in a storage tank in a simple manner while keeping the waste oil in a stable state. The waste oil can be stabilized by coexisting with solvent.
The solvent used in the present invention is typically at least one selected from the group consisting of water, alcohol, ether, carboxylic acid, ketone, aromatic hydrocarbons, and aliphatic hydrocarbons.
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Citations
18 Claims
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1. A method for producing (meth)acrylic acid or ester thereof comprising:
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providing a reaction gas generated by oxidizing propylene and/or acrolein in contact with a gas containing molecular state oxygen, or a reaction gas generated by oxidizing at least one member selected from isobutylene, t-butyl alcohol and methacrolein in contact with a gas containing molecular state oxygen;
treating the reaction gas to produce a (meth)acrylic acid solution; and
purifying the (meth)acrylic acid solution to produce (meth)acrylic acid, wherein waste oil produced during the method and which contains (meth)acrylic acid or ester thereof is coexisted with a solvent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification