Council of Scientific and Industrial Research

Reliance Industries Limited

Sunil Kumar

Anil Kumar

Bir Sain

Bhagwati Prasad Balodi

Gautam Das

Turuga Sundara Rama Prasada Rao

Gur Pratap Rai

Som Nath Puri

Madhukar Onkarnath Garg

Shrikant Madhusudan Nanoti

Garg Madhukar Onkarnath

Bhagat Ram Nautiyal

Prasenjit Ghosh

Pushpa Gupta

Nanoti Shrikant Madhusudan

Jai Prakash

Onkar Singh Tyagi

Virendra Kumar Kapoor

Virendra Kumar Bhatia

Brij Bahadur Agrawal

Anjan Ray

Jagdish Kumar

Nisha

Nagarathinam Shenbaga Murthy

Pooja Yadav

Manoj Srivastava

Ojasvi Sharma

Avinash Mhetre

Manish Tiwari

Raja Gopala Rao Meka

Method for crude petroleum oil processing in Crude Distillation Unit is provided to eliminate the stripping steam in an Atmospheric Distillation Column (VDC) of CDU for a significant reduction in the CDU's operating cost and alleviating the corrosion in the overhead section of ADC. The present invention relates to a method of separating the components of crude petroleum oil. The proposed method utilizes the innovative application of process hydrocarbon vapour consisting of a lighter fraction of crude and natural gas. The conceptualized new schemes for downstream processing the Light and Heavy gas oil (LGO and HGO) distillates to meet their boiling specifications are also disclosed.

Process for crude petroleum oil processing in the crude distillation unit (CDU)

An integrated process for simultaneous removal and value addition to sulfur and aromatics compounds of gas oil is provided. Process includes the segregation of refractive sulfur and aromatics compounds of gas oil in heavy fraction of gas oil using distillation processing of heavy fraction of gas oil in continuous solvent extraction zone, processing of lighter fraction of gas oil and raffinate of heavy fraction of gas oil in hydrotreating reaction zone operating under mild conditions of temperature and pressure for producing the gas oil with reduced sulfur and aromatic compounds and contact of extract phase generated during continuous extraction with water in mixer settler for generating the pseudo raffinate which can be used as suitable feed to hydrocracker to generate sulfur lean gas oil.

Integrated process for simultaneous removal and value addition to the sulfur and aromatics compounds of gas oil

Disclosed is a process for simultaneous production of benzene lean gasoline and recovery of high purity aromatics from narrow boiling light cracked gasoline fractions. The present invention provides a vacuum based two stage extractive distillation process, with pure NMP, for production of benzene lean gasoline (benzene content less than 0.4 Weight %) by recovery of high purity aromatics (purity more than 99 Weight %) from cracked gasoline fractions (boiling in the range of 40-90&#xb0; C.) comprising benzene in the range of 10-30 weight % and close-boiling non-aromatic hydrocarbons like paraffins, iso-paraffins, olefins, di-olefins (including conjugated di-olefins), and naphthenes in the range of 70-90 weight % along with impurities containing but not limited to oxygenates, metals, chlorides, sulphur compounds, nitrogen compounds and organic peroxides. The present invention provides an improved extractive distillation process for simultaneous production of benzene lean gasoline and benzene rich product from cracked gasoline fraction, with higher recovery of better quality products along with lower utility requirements and investment costs.

Process for simultaneous production of benzene lean gasoline and high purity benzene from cracked gasoline fraction

A process separates pure components from a product mixture produced by a one-step dimethyl ether synthesis reactor. The product mixture is scrubbed with pure dimethyl ether followed by scrubbing with aqueous methanol solvent in two absorption columns to reduce COlevel and to minimize methanol and dimethyl ether loss with the recovered unconverted synthetic gas. The pure water or aqueous methanol is mixed with the vapor stream of COseparation distillation. Dimethyl ether, methanol and water mixture are separated. A scheme for separation of methanol and water mixture minimizes the size, energy and cost of separation. The process can be cost-effective, energy-efficient, environment-friendly and readily-miniaturized.

Process for recovery of pure components from product mixture of one step dimethyl ether synthesis reactor

A method for significant increase in gas oil yield and energy efficiency in crude oil distillation is provided. The present invention relates to a method of separating the components of crude oil. This method utilizes the innovative and novel application of lighter fraction of crude through its superheating and its injection in the stripping section consisting of bottom to flash zone of main distillation column. Method also illustrates the innovative utilization of water in crude distillation unit to eliminate the bottom striping steam and for significant energy saving.

Method for increasing gas oil yield and energy efficiency in crude oil distillation

A process for fixed bed sweetening of petroleum distillates using halogenating metal phthalocyanine as a catalyst comprising impregnating the catalyst on activated charcoal bed by circulating alcoholic alkaline solution of the catalyst through charcoal bed till colorless bed solution is obtained in the effluent, passing the petroleum distillate through the said catalyst loaded charcoal bed along with air or oxygen at a temperature and pressure with liquid hourly space velocity with continuous or intermittent injection of alkali solution such as sodium hydroxide of concentration to obtain the desired low mercaptan level petroleum distillates. The alkaline solution used is selected from methanolic and ethanolic solution of sodium hydroxide. The halogenated metal phthalocyanine catalyst used is selected from dichloro cobalt phthalocyanine and dibromo cobalt phthalocyanine. The petroleum fraction used is selected from diesel, kerosene and FCC gasoline.

Process for the fixed bed sweetening of petroleum distillates using halogenated metal phthalocyanine as a catalyst

The present invention relates to a process for the preparation of metal phthalocyanine sulphonamide &lsqb;MPc(SO NHR) &rsqb; catalyst useful for sweetening of LPG and light petroleum distillates which comprises reacting a metal phthalocyanine with chlorosulphonic acid at 90-150&deg; C. for 1-5 hrs. cooling the reaction mixture adding 1-7 parts of a chloride reagent heating the said mixture at 60-80&deg; C. from 0.5-3 hrs. to obtain the metal phthalocyanine sulphonyl chloride, isolating it by adding the reaction mixture in ice cold water, reacting the isolated metal phthalocyanine sulphonyl chloride with an amine of general formula H NR where R is selected from hydrogen, aryl, alkyl and cycloalkyl in an aqueous or non-aqueous medium or a mixture thereof at a temperature in the range &minus;4 to 15&deg; C. and at a pH ranging between 7-9 in the presence of an acid binding agent to obtain the described metal phthalocyanine sulphonamide catalyst wherein the chloride reagent used is selected from the group consisting of thionyl chloride, phosphorus trichloride and phosphorus pentachloride, the binding agent used is selected from the group consisting of sodium bicarbonate, sodium carbonate, sodium hydroxide and tertiary organic bases selected from pyridine triethyl amine and piperidine and the catalyst metal phthalocyanine sulphonamide is selected from the group consisting of cobalt, manganese, nickel, iron vanadium phthalocyanine sulfonamide most preferably cobalt phthalocyanine sulphonamide.

Process for the preparation of a catalyst useful for liquid-liquid sweetening LPG and light petroleum distillates

Process for the preparation of a novel catalyst useful for sweetening of sour petroleum distillates

The present invention related to a process for sweetening of LPG light petroleum distillates by liquid liquid extraction using metal phtalocyanine sulphonamide catalyst which comprises extracting the mercaptanes contain in LPG, light petroleum distillate like pentanes, light straight run naphtha by liquid-liquid extraction using an aqueous or alcoholic solution of alkali metal hydroxide of concentration ranging between 1 wt % to 50 wt % in the presence of a metal phthalocyanine sulphonamide catalyst in the concentration ranging from 5-4000 ppmw, at a temperature ranging from 10&deg; C. to 80&deg; C. at a pressure ranging from 1 kg/cm -50 kg/cm in a continuous or batch manner, converting the mercaptanes present in above said extract into corresponding disulphides by passing air, oxygen or any oxygen containing gas at the above same temperature and pressure, regenerating the alkali solution containing catalyst for recycling by separating the upper layer of disulphides from said alkali solution of catalyst.

Process for sweetening of LPG, light petroleum distillates by liquid-liquid extraction using metal phthalocyanine sulphonamide catalyst

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Dehradun, India

Sunil Kumar