Council of Scientific and Industrial Research

Ministry of Petroleum & Natural Gas

Pushpa Gupta

Bir Sain

Anil Kumar

Sunil Kumar

Gautam Das

Gur Pratap Rai

Som Nath Puri

Bhagwati Prasad Balodi

Turuga Sundara Rama Prasada Rao

Jai Prakash

Onkar Singh Tyagi

Brij Bahadur Agrawal

Madhukar Onkarnath Garg

Shrikant Madhusudan Nanoti

Bhagat Ram Nautiyal

Yogendra Kumar Sharma

Soumen Dasgupta

Amar Nath Goswami

Tumula Venkateshwar Rao

Anshu Nanoti

Described herein is a process for the removal of sulfones by mesoporous silica adsorbents having narrow pore size distribution which could be controlled to specification for the selective removal of sulfones from oxidized hydrocarbon fuels wherein the sulfones were present due to oxidative conversion of organo-sulfur compounds by a suitable oxidizing solution. The mesoporous adsorbents showed typically 2-18 times higher equilibrium loading capacity for sulfones in comparison to the commercially available adsorbents.

Process for the removal of sulfones from oxidized hydrocarbon fuels

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

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

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Dehradun, India

Pushpa Gupta