B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/04 (2006.01) B01D 53/14 (2006.01) B01D 53/86 (2006.01)
Patent
CA 2413513
A process for adsorbing hydrocarbons from an acid gas stream includes passing the acid gas stream through an adsorbent which selectively removes hydrocarbons, desorbing the hydrocarbons from the adsorbent and contacting the desorbed hydrocarbons with an acid gas removal solution to remove acid gases which have been coadsorbed with the hydrocarbons. The process is particularly useful in removing hydrocarbons from a hydrogen sulfide-containing stream which is being directed to Claus processing for conversion into elemental sulfur. Useful adsorbents include crystalline titanium silicate molecular sieves containing titania octahedral sites such as ETS-10 and similar materials, as well as high silica aluminosilicate zeolite.
L'invention concerne un procédé d'adsorption d'hydrocarbures d'un courant de gaz acide, consistant à faire passer le courant de gaz acide par un adsorbent éliminant sélectivement les hydrocarbures, à désorber les hydrocarbures de l'adsorbent, et à mettre en contact les hydrocarbures désorbés avec une solution servant à éliminer les gaz acides afin d'éliminer les gaz acides ayant été coadsorbés avec les hydrocarbures. Ce procédé sert, en particulier, à éliminer les hydrocarbures d'un courant contenant de l'hydrogène sulfuré allant être soumis à un traitement de Claus pour sa conversion en soufre élémentaire. Les adsorbents efficaces comprennent des tamis moléculaires de silicate de titane cristallin contenant des sites octaédriques de dioxyde de titane comme ETS-10 et autres matières semblables, ainsi que des zéolites d'aluminosilicate riches en silice.
Buttwell Kenneth F.
Dolan William B.
Kuznicki Steven M.
Engelhard Corporation
Sim & Mcburney
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