Exxonmobil Research and Engineering Company

Exxonmobile Research and Engineering Company

John H Hollenbach

Stephen Harold Brown

Daniel Paul Leta

Bhupender S Minhas

Halou Oumar-Mahamat

Anjaneya Sarma Kovvali

Eric Bart Sirota

Kirk C Nadler

Edward W Corcoran

Ramon A Strauss

Tomas R Melli

A cross-linked polyvinyl sulfate, copolymer of polyvinyl sulfate and polyvinyl alcohol, or Nafion&#xae; membrane is used for recovering sulfuric acid from a feed mixture comprising predominantly acid and water under reverse osmosis conditions wherein sulfuric acid is enriched in the retentate stream and water is removed in the permeate stream.

Membrane and process for the recovery of acid

This invention relates to a process for separating a heavy hydrocarbon stream to produce at least one permeate product stream and at least one retentate product stream. The process utilizes an ultrafiltration process to designed to maximize the quality of the permeate and retenate product streams as well as process embodiments which improve permeate production quantities as well as improve the quality of the product streams obtained by the separations process. In preferred embodiments, the process includes configuration and operational parameters to maximize permeate yield and selectivity.

Process for separating a heavy oil feedstream into improved products

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Vienna, VA, United States of America

John H Hollenbach