Patents Assigned to Hindustan Petroleum Corporation Limited
  • Patent number: 12258523
    Abstract: The present invention relates to a solvothermal process for producing high quality fuels and chemicals from a biomass feedstock using lignin containing bioliquor as a solvent for hydrothermal liquefaction. The lignin containing bioliquor of the present invention is obtained as a waste stream from 2G-ethanol manufacturing plants.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: March 25, 2025
    Assignee: HINDUSTAN PETROLEUM CORPORATION LIMITED
    Inventors: Meesala Lavanya, Pedapati Chakradhar, Kumar Pramod
  • Patent number: 12209222
    Abstract: The present disclosure discloses a process for obtaining an aromatic lean stream and an aromatic rich stream from a hydrocarbon feed, the process comprising: (a) obtaining a hydrocarbon feed; and (b) contacting the hydrocarbon feed with a solvent selected from a group consisting of alkyl aromatic hydrophilic polyethylene oxide, polyethylene glycols, and combinations thereof to obtain an aromatic lean stream and an aromatic rich stream. It further discloses a simultaneous process to obtain an aromatic lean stream and an aromatic rich stream. The present disclosure also discloses a process for obtaining de-aromatized kerosene from a hydrocarbon feed. Additionally, the present disclosure discloses a process for obtaining BTX from a hydrocarbon feed.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: January 28, 2025
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Valavarasu Gnanasekaran, Pradyut Kumar Dhar, Kanala Raghava Krishna, Ramesh Kandanelli, Ravi Balasubramaniam, Bojja Ramachandra Rao
  • Patent number: 12146015
    Abstract: The present disclosure discloses a crosslinked polymer for dewaxing the lubricating oils, the polymer derived from (a) 70-77 weight percentage of at least one alkyl acrylate; (b) 23-28 weight percentage of at least one vinyl aromatic hydrocarbon; (c) 0.1-2.5 weight percentage of at least one crosslinker; and (d) 0.75-2.5 weight percentage of at least one initiator and wherein the polymer has a number average molecular weight in the range of 5000-15000. The present disclosure discloses a convenient process for preparing the crosslinked polymer. The present disclosure further reveals a method for dewaxing the lubricating oil.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: November 19, 2024
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Siva Kesava Raju Chintalapati, Naresh Kottari, Srinivasa Rao Ganagalla, Valavarasu Gnanasekaran, Ravi Balasubramaniam
  • Patent number: 12053766
    Abstract: The instant disclosure provides an organometallic compound of Formula I: wherein R is selected from —C1-10 alkyl or —C(O)C1-10 alkyl; R1 is selected from —C1-10 alkyl, —C(O)C1-10 alkyl, —C(O)C1-10 alkylN+RaRbCl?, —C(O)C1-10 alkylN(CO)Ra, —C1-10 alkylN+RaRbCl—, or —C1-10 alkylN(CO)Ra, wherein Ra, and Rb is independently selected from H, C6-12 aryl, C1-10 alkyl, C6-12 aryl, or C1-10 alkyl; R, and R1 can be taken together to form a monocyclic 6-8 membered ring; M is selected from Group VI-B metals; and m and n is independently 1 to 3. A process for obtaining the organometallic compound is also provided.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: August 6, 2024
    Assignee: HINDUSTAN PETROLEUM CORPORATION LIMITED
    Inventors: Naresh Kottari, Kanuparthy Naga Raja, Chintalapati Siva Kesava Raju, Satyanarayana Murty Pudi, Bhavesh Sharma, Ramkumar Mangala, Peddy Venkat Chalapathi Rao, Nettam Venkateswarlu Choudary, Gandham Sriganesh
  • Patent number: 12037554
    Abstract: The present invention discloses a homogenous cerium (Ce) catalyst composition comprising Ce(IV) complex alone, or Ce(IV) complex in a mixture with Ce(III) complex, that can significantly improve both LPG and soot combustion, resulting in higher flame temperatures, faster heating, reduced cooking time and reduced fuel consumption. The cerium(III) complex is cerium(III) 2-ethylhexanoate and the cerium(IV) complex is aqua(2-N-(2-hydroxyethylimino)-4-pentanoate) dinitrocerium(IV) [Ce(L1)(H2O)(NO3)2], wherein L1 is 2-N-(2-hydroxyethylimino)-4-pentanone.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: July 16, 2024
    Assignee: HINDUSTAN PETROLEUM CORPORATION LIMITED
    Inventors: Sandip Bhowmik, Krishnamurthy Narayanan, Soniya Naik, Balasubramaniam Ravi
  • Patent number: 11993753
    Abstract: The present disclosure relates to an antifoulant formulation comprising: (a) at least one ammonium salt of linear alkyl benzene sulphonic acid; (b) at least one aromatic hydrocarbon; (c) at least one diluent; (d) polyisobutylene succinic anhydride; and (e) at least one alkyl amine. It also relates to the process of preparation of the said antifoulant formulation. The instant disclosure further relates to the method of inhibiting fouling tendency in the heat exchangers of crude oil, crude blends, short residue, involving the said antifoulant formulation.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: May 28, 2024
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Doni Eswararao, Kanala Raghava Krishna, Madala Sairamu, Mangala Ramkumar, Bojja Ramachandrarao, Nettam Venkateswarlu Choudary, Gandham Sriganesh
  • Publication number: 20240101501
    Abstract: The present disclosure relates to a process for the preparation of ethyl tert-butyl ether comprising: (a) reacting ethanol with a mixture of C4 hydrocarbon feed in the presence of a catalyst to obtain a mixture; and (b) contacting the mixture with an entrainer at a temperature in the range of 40-70° C. and a pressure in the range of 15-30 bars to obtain ethyl tert-butyl ether, wherein, the mixture of C4 hydrocarbon feed comprises isobutylene, and the ethanol to isobutylene mole ratio is in the range of 1:1 to 2:1. The present disclosure also discloses a process of separating ethanol and ethyl tert-butyl ether. Further, the present disclosure discloses a composition comprising ethyl tert-butyl ether with a purity in the range of 91%-93%.
    Type: Application
    Filed: March 17, 2021
    Publication date: March 28, 2024
    Applicant: HINDUSTAN PETROLEUM CORPORATION LIMITED
    Inventors: Santhoshkumar Reddy SANDIRI, Bennet CHELLIAHN, Valavarasu GNANASEKARAN, Ramachandra Rao BOJJA
  • Patent number: 11905604
    Abstract: The present disclosure relates to a corrosion inhibitor formulation comprising: a) at least one quaternary ammonium salt; b) at least one fatty acid methyl ester; c) at least one viscosity reducing agent; and d) at least one solubilizing agent, wherein the at least one quaternary ammonium salt to the at least one fatty acid methyl ester weight ratio is in the range of 1:0.2-1:5.0. The instant disclosure further relates to the process of preparation of the corrosion inhibitor formulation.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: February 20, 2024
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Raghava Krishna Kanala, Naresh Kottari, Venkateswarlu Cheerladinne, Srinivasa Rao Ganagalla, Ramkumar Mangala, Bojja Ramachandrarao, Venkat Chalapathi Rao Peddy, Venkateswarlu Choudary Nettem, Sriganesh Gandham
  • Patent number: 11896970
    Abstract: Bubble column reactor assembly (100) is provided, the assembly comprising: a reactor vessel (104) comprising a bottom end and a top end; a pre-distributor plate (150) disposed above the bottom end of the reactor vessel (104) to distribute gas in a liquid, the plate comprising a bottom surface facing the bottom end of the reactor vessel (104) and a top surface opposite to the bottom surface. The pre-distributor plate (150) comprises a plurality of perforations (206), each perforation (206) comprising: a duct (170) projecting from the bottom surface of the pre-distributor plate; and a cap (180) enclosing the duct (170) and the perforation (206). The cap (180) comprises a plurality of openings (210). A gas distributor (110) is disposed below the pre-distributor plate (150) to receive gas and inject gas into the liquid prior to distribution of gas and the liquid by the pre-distributor plate (150).
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: February 13, 2024
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Kanuparthy Naga Raja, Ramachandra Rao Bojja, Bhavesh Sharma
  • Patent number: 11891577
    Abstract: The present disclosure is an FCC additive composition comprising an acidity enhanced modified clay; an acidity enhanced modified alumina; a binder; a phosphorous oxide and a boron oxide, as well as a process for preparing the FCC additive composition. The FCC additive as disclosed is capable of cracking bottoms comprising large hydrocarbon molecules/heavy fuel oils, it enhances bottoms conversion and reduces formation of dry gas.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: February 6, 2024
    Assignee: HINDUSTAN PETROLEUM CORPORATION LIMITED
    Inventors: Narasimharao Kanna, Somanath Kukade, Pramod Kumar, Ramachandrarao Bojja
  • Publication number: 20240018171
    Abstract: The present disclosure pertains to the technical field of a catalyst. The present disclosure relates to a complexing agent for preparing titanium complexes for alpha olefin polymerization. In particular, the present disclosure provides titanium complexes for alpha olefin polymerization and methods of preparation thereof.
    Type: Application
    Filed: July 14, 2023
    Publication date: January 18, 2024
    Applicant: Hindustan Petroleum Corporation Limited
    Inventors: Nilesh Rajesh Mote, Monikangkana Talukdar, Yogesh Popatrao Patil, Bennet Chelliahn, Ramachandrarao Bojja
  • Publication number: 20230347329
    Abstract: The present disclosure provides a process for preparing a reforming catalyst, said process comprising: (a) impregnating at least one support with at least one promoter metal and at least one active metallic component to obtain a second catalytic precursor; (b) contacting the second catalytic precursor with at least one non-metallic component to obtain a third catalytic precursor; (c) coating the third catalytic precursor with at least one silanizing agent to obtain a coated third catalytic precursor; and (d) drying the coated third catalytic precursor to obtain a dried third catalytic precursor followed by calcination of the dried third catalytic precursor to obtain the reforming catalyst. The present disclosure also provides a reforming catalyst and the process for catalytically reforming a hydrocarbon feed stream by using the reforming catalyst.
    Type: Application
    Filed: July 23, 2020
    Publication date: November 2, 2023
    Applicant: HINDUSTAN PETROLEUM CORPORATION LIMITED
    Inventors: Kotni SANTHOSH, Sandiri Santhoshkumar REDDY, Bennet CHELLIAHN, Bojja RAMACHANDRARAO, Valavarasu GNANASEKARAN
  • Patent number: 11634623
    Abstract: The present disclosure provides a bis-quaternary ammonium salt of Formula I wherein A is selected from O, NH, S, C(O), C(NH) or C(S); R1 and R2 are independently selected from C1-3 alkyl or H; R3 is C1-16 alkyl, C13-20 aralkyl or C2-16 allyl; X? is selected from chloro, bromo, iodo, hydroxide, nitrate or sulphate; and n and m are independently 1 to 6. Furthermore, a corrosion inhibition formulation comprising said bis-quaternary ammonium salt is revealed. Also, convenient processes for the preparation of the salt of Formula I and the formulation are provided.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: April 25, 2023
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Raghava Krishna Kanala, Naresh Kottari, Srinivasa Rao Ganagalla, Ramkumar Mangala, Ramachandrarao Bojja, Peddy Venkat Chalapathi Rao, Nettem Venkateswarlu Choudary, Gandham Sriganesh
  • Patent number: 11541382
    Abstract: The instant disclosure provides a process for synthesis of compound of Formula: Xa-Mz+-Yb, wherein Mz+ is a transition metal ion and X and Y are carboxylate anions. The catalysts are hydrocarbon soluble and the process for their preparation, as disclosed herein, constitutes an elegant method for the preparation of such catalysts.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: January 3, 2023
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Naresh Kottari, Kanuparthy Naga Raja, Siva Kesava Raju Chintalapati, Satyanarayana Murty Pudi, Bhavesh Sharma, Ramkumar Mangala, Peddy Venkata Chalapathi Rao, Nettam Venkateswarlu Choudary, Sriganesh Gandham
  • Patent number: 11525098
    Abstract: The present disclosure describes an additive composition comprising: (a) an organometallic compound; (b) a nitrogen-containing compound; (c) an aryl peroxide; and (d) at least one solvent, wherein the organometallic compound to the nitrogen-containing compound to the aryl peroxide weight ratio is in a range of 7:0.5:0.5-9:1.5:1.5. The addition of additive composition not only synergistically improves the properties of the at least one fuel, such as, LPG for use as torch gas for cutting and welding application, but also reduces the consumption of both fuel and oxygen for cutting applications. The present disclosure is also directed towards a process for preparation of the fuel composition.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: December 13, 2022
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Krishnamurthy Narayanan, Sandip Bhowmik, Ramkumar Mangala, Ramachandrarao Bojja, Sriganesh Gandham
  • Patent number: 11478782
    Abstract: A catalyst is provided having: (a) at least one multimetallic salt; and (b) at least one organic acid, wherein the at least one multimetallic salt to the at least one organic acid weight ratio is in the range of 1:0.01-1:0.5. A process is also provided for the preparation of the catalyst and for the preparation of the multimetallic salt.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: October 25, 2022
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Naresh Kottari, Kanuparthy Naga Raja, Siva Kesava Raju Chintalapati, Satyanarayana Murty Pudi, Bhavesh Sharma, Ramkumar Mangala, Peddy Venkat Chalapathi Rao, Nettem Venkateswarlu Choudary, Gandham Sriganesh
  • Patent number: 11471791
    Abstract: A process is provided for separating hydrophobic material from a mixture of hydrophobic and hydrophilic material using peptide-based amphiphilic organogelators.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: October 18, 2022
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Raman Ravishankar, Chinthalapati Sivakesava Raju, Jitalaxmi Bharali, Sheshachala Srinivasa Narasimha, Peddy Venkat Chalapathi Rao, Nettem Venkateswarlu Choudary
  • Patent number: 11434443
    Abstract: The present disclosure discloses a water-hydrocarbon fuel emulsion comprising: a) 87-99% by weight of at least one hydrocarbon fuel with respect to the emulsion; b) 0.1-10% by weight of water with respect to the emulsion; c) 1-3% by weight of an emulsifying blend with respect to the emulsion; and d) 0.05-1% by weight of at least one inorganic hydride with respect to the emulsion, wherein the emulsifying blend comprises i) at least one oil-soluble nonionic surfactant; ii) at least one water-soluble nonionic surfactant; and iii) at least one ionic surfactant. The present disclosure also reveals a convenient preparation process of the water-hydrocarbon fuel emulsion.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: September 6, 2022
    Assignee: HINDUSTAN PETROLEUM CORPORATION LIMITED
    Inventors: Sandip Bhowmik, Raghava Krishna Kanala, Ravi Balasubramaniam
  • Publication number: 20220112431
    Abstract: The present disclosure relates to an FCC additive composition for bottoms cracking. The FCC additive composition comprises an acidity enhanced modified clay; an acidity enhanced modified alumina; a binder; a phosphorous oxide and a boron oxide. The present disclosure further relates to a process for the preparation of the FCC additive composition. The FCC additive of the present disclosure is capable of cracking bottoms comprising large hydrocarbon molecules/heavy fuel oils. The FCC additive composition of the present disclosure enhances bottoms conversion and reduces formation of dry gas.
    Type: Application
    Filed: May 20, 2020
    Publication date: April 14, 2022
    Applicant: HINDUSTAN PETROLEUM CORPORATION LIMITED
    Inventors: Narasimharao KANNA, Somanath KUKADE, Pramod KUMAR, Ramachandrarao BOJJA
  • Patent number: 11060043
    Abstract: The present disclosure relates to a formulation of diesel additive comprising 2-ethylhexanoic acid, at least one alkylene glycol and at least one alkanolamine which at specific weight ratios, is able to enhance the lubricity of a fuel. Also provided are the methods of preparation and usage of the same. It further relates to the fuel composition comprising the fuel, and the formulation of present disclosure, and the method of preparing the fuel composition.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: July 13, 2021
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Sandip Bhowmik, Chintalapati Siva Kesava Raju, Raghava Krishna Kanala, Ganagalla Srinivasa Rao, Ramkumar Mangala, Peddy Venkata Chalapathi Rao, Nettam Venkateswarlu Choudary, Gandham Sriganesh