Patents Represented by Attorney Kellogg Brown and Root, Inc.
  • Patent number: 6015450
    Abstract: Methanol emissions in the CO.sub.2 vent from a synthesis gas unit in an ammonia or hydrogen plant are reduced by contacting raw synthesis gas from a low temperature shift converter with recycled stripped condensate to absorb methanol. The synthesis gas is treated in a purification unit to form the CO.sub.2 vent of reduced methanol content. The condensate from the contacting step is steam stripped to form a process steam stream suitable for feed to the reformer and a stripped process condensate stream suitable for offsites polishing, a portion of which is recycled for contacting the raw synthesis gas.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: January 18, 2000
    Assignee: The M. W. Kellogg Company
    Inventors: Girish Chimanlal Joshi, Stephen Allen Noe
  • Patent number: 6005011
    Abstract: A plant and process for converting associated gas from crude oil to methanol at or near the wellhead. The process uses partial oxidation of the associated gas, direct quench, liquid phase methanol conversion wherein substoichiometric H.sub.2 :CO is converted to methanol, and a loop purge to a gas turbo generator to provide all of the plant power requirements. This results in avoiding a complex vapor phase, multiple reactor methanol loop and steam-catalytic reforming, and obtains a compact, low-cost, self-sufficient facility suitable for remote locations.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: December 21, 1999
    Assignee: The M. W. Kellogg Company
    Inventor: Gunnar Henningsen
  • Patent number: 5958219
    Abstract: A process for metals passivation of metals-contaminated equilibrium catalyst (ECat) used in a fluidized catalytic cracking (FCC) process is disclosed. Repeated treatment of a slip stream of ECat in a high-strength magnetic field, preferably a magnetic catalyst separator, changes the properties of the ECat, promoting growth of relatively large crystals or deposits of metal deposits on ECat which are less catalytically poisonous. Magnetic conditioning permits an increase in metals levels on ECat from, e.g., 3000 to 4000 ppm, without increasing hydrogen and/or coke make. Metals passivation by magnetic conditioning can also be used to concentrate feed metals on the oldest catalyst in the unit. This allows magnetic separation of the oldest catalyst in the unit after 1-6 months of magnetic conditioning, even though feed metals levels are otherwise insufficient to permit effective magnetic catalyst separation.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: September 28, 1999
    Assignee: The M. W. Kellogg Company
    Inventors: Terry L. Goolsby, Charles E. Mink, Howard F. Moore