Process for purification of vent streams
AssigneeDow Global Technologies LLC
InventorsJohn G. Pendergast, Jr., Johnny W. Masey, Robert D. Swindoll, Yujun Liu
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a system for recovering olefins from a vent stream comprising an absorber; and a stripper; where the absorber and the stripper are in a recycle loop; and where the absorber is operative to treat a vent stream with a solvent to remove more than 99 wt % of a halogenated by-product contained in the vent stream and to recover 90 to 95 wt % of olefin molecules present in the vent stream; and where the stripper is operative to remove more than 99 wt % of the halogenated by-products present in the solvent; and where the solvent is recycled to the absorber.
Claims7
A system for recovering olefins from a vent stream comprising:
- a mixer that is operative to receive a plurality of vent streams that contain halogenated by-products and to mix the respective vent streams;
- an absorber located downstream of the mixer and in fluid communication with the mixer;
- and
- a stripper;
- where the absorber and the stripper are in a recycle loop;
- and where the absorber is operative to treat a vent stream with a solvent to remove more than 99 wt % of a halogenated by-product contained in the vent stream and to recover 90 to 95 wt % of olefin molecules present in the vent stream;
- and where the stripper is operative to remove more than 99 wt % of the halogenated by-products present in the solvent;
- and where the solvent is recycled to the absorber.
Dependencies are inferred from the claim text.