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Crude Krypton/Xenon Recovery from a Pumped-LOX ASU Cycle

IP.com Disclosure Number: IPCOM000019392D
Publication Date: 2003-Sep-12
Document File: 1 page(s) / 33K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention is a method of producing crude Kr/Xe from a pumped-LOX plant. The basic idea is to get the crude Kr/Xe from the LOX at pumped-LOX pressure (e.g. 20 psia to 400 psia), rather than try and recover the crude from the LP column. The stripper column used to remove the methane and recover the crude Kr/Xe operates at pumped-LOX pressure and uses booster air to drive the reboiler. Flowsheet is shown in Figure 1.

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Crude Krypton/Xenon Recovery from a Pumped-LOX ASU Cycle

The invention is a method of producing crude Kr/Xe from a pumped-LOX plant. The basic idea is to get the crude Kr/Xe from the LOX at pumped-LOX pressure (e.g. 20 psia to 400 psia), rather than try and recover the crude from the LP column. The stripper column used to remove the methane and recover the crude Kr/Xe operates at pumped-LOX pressure and uses booster air to drive the reboiler. Flowsheet is shown in Figure 1.

Oxygen product is withdrawn as LOX from the low pressure column and pumped to desired pressure. The LOX is split into two streams. The first stream is fed to the top of a stripping column; the second stream is fed at or near the bottom of the stripping column. The stripping column rejects methane from the top along with the bulk of oxygen. Crude Kr/Xe are recovered in the bottoms. The stripper reboiler is operated by condensing booster air.

Disclosed Anonymously


Document headers and footers

Originally published in Research Disclosure September 1999, page 1158, publ. no. 42517