Patents by Inventor Mahalingam Vanamamalai

Mahalingam Vanamamalai 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).

  • Patent number: 11739277
    Abstract: Organic sulfur compounds which are generally present in the crude oil undergoes various transformations while processing the crude oil in the secondary processing units such as fluid catalytic cracker, hydrocracker, delayed coker, visbreaker, etc. The sulfur present in the feed which enters into these secondary processing units are distributed into various products coming out of the units. Sulfur compounds which are present in the various product fractions are removed to meet the desired specifications before routing to the final product pool. Conventionally, sulfur present in the LPG has been removed by amine treatment followed by caustic and water wash. The present invention relates to a process for removal of sulfur and other impurities from Liquefied Petroleum Gas (LPG) comprising olefins through reactive desulfurization route. The present invention is an eco-friendly process as it minimizes or eliminates the use of caustic which is conventionally used to remove the sulfur from LPG.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: August 29, 2023
    Assignee: Indian Oil Corporation Limited
    Inventors: Saravanan Subramani, Vimal Kumar Upadhyay, Prosenjit Maji, Reshmi Manna, Vatsala Sugumaran, Mahalingam Vanamamalai, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
  • Publication number: 20210292670
    Abstract: Organic sulfur compounds which are generally present in the crude oil undergoes various transformations while processing the crude oil in the secondary processing units such as fluid catalytic cracker, hydrocracker, delayed coker, visbreaker, etc. The sulfur present in the feed which enters into these secondary processing units are distributed into various products coming out of the units. Sulfur compounds which are present in the various product fractions are removed to meet the desired specifications before routing to the final product pool. Conventionally, sulfur present in the LPG has been removed by amine treatment followed by caustic and water wash. The present invention relates to a process for removal of sulfur and other impurities from Liquefied Petroleum Gas (LPG) comprising olefins through reactive desulfurization route. The present invention is an eco-friendly process as it minimizes or eliminates the use of caustic which is conventionally used to remove the sulfur from LPG.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 23, 2021
    Inventors: Saravanan SUBRAMANI, Vimal Kumar Upadhyay, Prosenjit Maji, Reshmi Manna, Vatsala Sugumaran, Mahalingam Vanamamalai, Madhusudan Sau, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar