Location History:
- San Antonio de Los Altos, VE (1985)
- Caracas, VE (1985)
- Los Teques, VE (1987)
Company Filing History:
Years Active: 1985-1987
Title: The Innovative Contributions of Roberto Schemel
Introduction
Roberto Schemel is a notable inventor based in San Antonio de Los Altos, Venezuela. He has made significant contributions to the field of chemical engineering, particularly in the area of catalyst regeneration and vanadium precipitation. With a total of 3 patents to his name, Schemel's work has implications for the upgrading of heavy hydrocarbon feedstocks.
Latest Patents
One of Schemel's latest patents is a process for the regeneration of spent catalysts used in the upgrading of heavy hydrocarbon feedstocks. This innovative process involves roasting a spent natural iron base catalyst contaminated with carbon, sulfur, and vanadium at a temperature not exceeding 400 degrees Celsius. The presence of a carbonate, such as sodium or potassium, helps eliminate carbon from the catalyst, resulting in a roasted product that contains iron oxide and water-soluble salts of sulfur and vanadium. The subsequent water leaching process dissolves these soluble salts, allowing for the separation of a regenerated catalyst that is substantially free of carbon and sulfur.
Another significant patent by Schemel is a method for precipitating vanadium from vanadium-bearing liquors. This method entails adjusting the pH of the liquor using a precipitating agent, such as hydroxides of sodium, potassium, or calcium, to a range of about 5.5 to 6.5. This adjustment facilitates the precipitation of vanadium in its trivalent and tetravalent states. Remaining traces of vanadium are cemented through the addition of calcium hydroxide or calcium oxide. The dried precipitate is then heated in the presence of air and sodium or potassium, resulting in a water-soluble salt that, when dissolved, yields vanadium in its pentavalent state.
Career Highlights
Roberto Schemel has built a successful career at Intevep, S.A., where he has been instrumental in advancing research and development in catalyst technologies. His expertise in chemical processes has positioned him as a key figure in the industry.
Collaborations
Throughout his career, Schemel has collaborated with notable colleagues, including Domingo P. Rodriguez and Ramon Salazar. These partnerships have fostered innovation and contributed to the success of various projects within the company.
Conclusion
Roberto Schemel's contributions to the field of chemical engineering, particularly in catalyst regeneration and vanadium precipitation, highlight his
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