Patents Assigned to BP Chemicals Limites
  • Removal of sulfides using chlorite and an amphoteric ammonium betaine
    Patent number: 5082576
    Abstract: This invention relates to a composition suitable for use in process for the removal of sulfides, especially hydrogen sulfide from a feed contaminated therewith. The composition comprises an aqueous solution of a chlorite and a corrosion inhibitor which is an amphoteric ammonium compound of the formula ##STR1## as herein defined. The inhibitor mitigates problems of corrosion associated with chlorite scavengers.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: January 21, 1992
    Assignee: BP Chemicals Limites
    Inventor: Mark R. Howson