This inventor holds 1 USPTO granted patent. Top assignee: The United States of America as Represented by the United States. Active years: 1982.
Company Filing History:
Years Active: 1982
Title: The Innovative Contributions of Everett A. Sondreal
Introduction
Everett A. Sondreal is a notable inventor based in Grand Forks, ND (US). He has made significant contributions to the field of coal conversion technology. His innovative approach focuses on improving the efficiency of converting coal into liquid and gaseous products.
Latest Patents
Sondreal holds a patent for a "Continuous process for conversion of coal." This patent describes an improved method for converting coal to liquid and gaseous products, where liquid products predominate. The process involves reacting crushed low-rank coal, which contains about 12 to 30% by weight of water, in a solvent at temperatures ranging from about 455°C to 500°C. The reaction occurs under pressures of about 2000 to 5000 psi using a H₂/CO mixture, with a liquid residence time of approximately 20 to 60 minutes. The solvent used in this process is a fraction of the liquid product, consisting of about 55% that distills at less than 250°C, 20% that is soluble in THF, and 25% that comprises carbon polymer and indigenous inorganic matter. Additionally, the solvent contains at least about 5 weight % of partially hydrogenated aromatics and/or fully hydrogenated aromatics, with little or no alkylated aromatics or higher alkanes.
Career Highlights
Sondreal's career is marked by his dedication to advancing coal conversion technologies. His innovative patent reflects his commitment to addressing the challenges associated with coal processing. He has contributed to the development of more efficient methods that reduce reactor, tubing, and valve plugging due to carbonate salt formation.
Collaborations
Throughout his career, Sondreal has collaborated with notable colleagues, including Sylvia A. Farnum and Gene G. Baker. These collaborations have further enhanced the research and development of coal conversion technologies.
Conclusion
Everett A. Sondreal's contributions to the field of coal conversion are significant and impactful. His innovative patent demonstrates his expertise and commitment to improving energy production methods. His work continues to influence advancements in the industry.