Pump for loop reactor
AssigneeTotal Research & Technology Feluy
InventorsFrank Timmermans, Wouter Ooms, Daan Dewachter, Louis Fouarge
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Abstract
The present invention relates the use of a pump in a loop reactor for the production of polyethylene, as well as a reactor comprising such pump and methods for producing polyolefin by means of such reactor. The pump according to the invention is characterized in that it is an axial flow impeller circulation pump, wherein the impeller comprises 6 blades and wherein the pump is fixed on a spring supported frame. Use of the pump according to the present invention allows for preparation of homogeneous polyethylene products that meet high quality standards from the complicated ethylene polymerization mixtures while at the same time being produced with low energy consumption.
Claims20
An axial pump for circulating an olefin polymerization slurry through a loop reactor comprising:
- an impeller comprising at least 5 blades, wherein the axial pump is fixed on a spring supported frame, wherein the blades have a blade angle ranging between 24° and 26°.
An axial pump for circulating an olefin polymerization slurry through a loop reactor comprising:
- an impeller comprising at least 5 blades, wherein the axial pump is fixed on a spring supported frame, wherein the blades are made of inox.
A loop reactor comprising:
- interconnected pipes defining a flow path for an olefin polymerization slurry;
- and
- an axial pump suitable for maintaining the olefin polymerization slurry in circulation in the loop reactor, wherein the axial pump comprises an impeller comprising at least 5 blades, and wherein the axial pump is fixed on a spring supported frame.
A process comprising:
- circulating an olefin polymerization slurry through a loop reactor using an axial pump, wherein the axial pump comprises an impeller comprising at least 5 blades, and wherein the axial pump is fixed on a spring supported frame.
Dependencies are inferred from the claim text.