Process for the production of alkoxylates
AssigneesThyssenkrupp Uhde GmbH, thyssenkrupp AG
InventorChristopher Jenkins
Life of this patent
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Abstract
A process for producing alkoxylates features a high growth ratio without the need of interim storage of a pre-polymer produced in a first reactor. The process may involve reacting a monomeric educt in the presence of a catalyst and a starting material in a first reactor equipped with a first circulation loop and thereafter passing a pre-polymer that is produced of the first circulation loop to a second reactor equipped with a second circulation loop, where a desired polymer is produced. The first reactor may comprise a smaller volume than the second reactor. The growth ratio, defined as a final batch volume of the second reactor divided by a minimum initial volume of the starting material in the first reactor, is at least 80:1.
Claims19
A process for producing an alkoxylate polymer comprising:
- reacting a monomeric educt in the presence of an alkaline catalyst and a starting material in a first reactor with a first circulation loop to produce at least a pre-polymer;
- and
- passing the pre-polymer from the first reactor to a second reactor with a second circulation loop to produce the alkoxylate polymer, wherein the first reactor comprises a volume that is smaller than a volume of the second reactor,
- wherein the second reactor is a jet loop reactor including a jet device configured to inject reaction medium and the monomeric educt into the second reactor,
- wherein a growth ratio defined as a final batch volume of the second reactor divided by an initial volume of the starting material in the first reactor is at least 80:1;
- wherein the volume of the first reactor is less than 10 m3.
A process for producing an alkoxylate polymer comprising:
- reacting a monomeric educt in the presence of a catalyst and a starting material in a first reactor with a first circulation loop to produce at least a pre-polymer;
- and
- passing the pre-polymer from the first reactor to a second reactor with a second circulation loop to produce the alkoxylate polymer, wherein the first reactor comprises a volume that is smaller than a volume of the second reactor,
- wherein at least one of the first reactor or the second reactor is a jet loop reactor,
- wherein a growth ratio defined as a final batch volume of the second reactor divided by an initial volume of the starting material in the first reactor is at least 80:1,
- wherein a reaction in the first reactor is started with the initial volume of the starting material corresponding to between one fifth volume part and one twentieth volume part of a total volume of pre-polymer produced in the first reactor.
A plant for producing an alkoxylate polymer, the plant comprising:
- a first reactor with a first circulation loop, wherein a volume of the first reactor is less than 10 m3;
- a second reactor with a second circulation loop, wherein the second reactor is larger in volume than the first reactor, and the second circulation loop is larger than the first circulation loop;
- and
- at least one of:
- a connection line between the first circulation loop and the second reactor, or
- a connection line between the first circulation loop and the second circulation loop,
- wherein the second circulation loop comprises a jet loop reactor, a pump, and a heater/cooler,
- wherein the plant is configured to:
- react a monomeric educt in the presence of an alkaline catalyst and a starting material in the first reactor with the first circulation loop to produce at least a pre-polymer;
- and
- pass the pre-polymer from the first reactor to the second reactor with the second circulation loop to produce the alkoxylate polymer,
- wherein a growth ratio defined as a final batch volume of the second reactor divided by an initial volume of the starting material in the first reactor is at least 80:1.
Dependencies are inferred from the claim text.