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Purification process

  • US 10,252,211 B2
  • Filed: 05/30/2012
  • Issued: 04/09/2019
  • Est. Priority Date: 09/29/2011
  • Status: Active Grant
First Claim
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1. A purification system for removing halogen compounds from process fluids, comprising:

  • a feed source of a process fluid containing hydrogen halide,a first sorbent comprising an alkalized alumina or an alkalized zinc-alumina, wherein the first sorbent is in the form of pellets, granules, or extrudates; and

    a second sorbent comprising a mixed transition alumina and that is in the form of granulated or extruded shaped units comprising 1 wt %-10 wt % binder;

    wherein;

    the first sorbent is positioned between the feed source and the second sorbent, and the purification system is controlled to direct the flow of the feed gas through the purification system from the feed source to the first sorbent and then to the second sorbent, such that the second sorbent is positioned downstream from the first sorbent, relative to the directed flow of the process fluid.

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