Patents by Inventor Kathryn Buckalew

Kathryn Buckalew has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Purified terephthalic acid (PTA) vent steam utilization
    Patent number: 10414712
    Abstract: Processes for manufacturing a purified aromatic carboxylic acid include oxidizing a substituted aromatic compound in a reaction zone to form a crude aromatic carboxylic acid and a gaseous stream; heating the crude aromatic carboxylic acid in a pre-heating zone, contacting the crude aromatic carboxylic acid with hydrogen in the presence of a catalyst in a hydrogenation reactor to form a purified aromatic carboxylic acid, crystallizing the purified aromatic carboxylic acid in a crystallization zone to form a slurry stream comprising solid purified aromatic carboxylic acid and a vapor stream. At least a portion of the vapor stream is directed to the pre-heating zone and at least a portion of the vapor stream from the pre-heating zone is vented to the off-gas treatment zone in order to achieve energy savings.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 17, 2019
    Assignee: BP Corporation North America Inc.
    Inventors: Thomas Bartos, Kathryn Buckalew
  • PURIFIED TEREPHTHALIC ACID (PTA) VENT STEAM UTILIZATION
    Publication number: 20180186719
    Abstract: Processes for manufacturing a purified aromatic carboxylic acid include oxidizing a substituted aromatic compound in a reaction zone to form a crude aromatic carboxylic acid and a gaseous stream; heating the crude aromatic carboxylic acid in a pre-heating zone, contacting the crude aromatic carboxylic acid with hydrogen in the presence of a catalyst in a hydrogenation reactor to form a purified aromatic carboxylic acid, crystallizing the purified aromatic carboxylic acid in a crystallization zone to form a slurry stream comprising solid purified aromatic carboxylic acid and a vapor stream. At least a portion of the vapor stream is directed to the pre-heating zone and at least a portion of the vapor stream from the pre-heating zone is vented to the off-gas treatment zone in order to achieve energy savings.
    Type: Application
    Filed: November 28, 2017
    Publication date: July 5, 2018
    Applicant: BP Corporation North America Inc.
    Inventors: Thomas Bartos, Kathryn Buckalew