Indian Oil Corporation Limited

Other

Sobhan Ghosh

Satish Makhija

Sukumar Mandal

Asit Kumar Das

Debasis Bhattacharyya

Akhilesh Kumar Bhatnagar

Sanjay Kumar Ray

Deepak Kumar Tuli

Madan Mohan Rai

Sabyasachi Sinha Ray

Satyen Kumar Das

Mohan Prabhu Kuvettu

Rakesh Sarin

Marri Rama Rao

Jagdev Kumar Dixit

Venkatachalam Krishnan

Manoranjan Santra

Latoor Lal Saroya

Sanjeev Singh

Swaminathan Sivaram

Arumugam Velayutham Karthikeyani

Ram Mohan Thakur

Mitra Bhanu Patel

Gadari Saidulu

Gopal Ravichandran

Niranjan Raghunath Raje

Kamlesh Gupta

Ganga Shanker Mishra

Arvind Pratap Singh

Veena Rani Bansal

Thekke Pangil Mohandas

Rama Rao Marri

Dixit Jagdev Kumar

Saroya Latoor Lal

Shankar Sharma

Vutukuru Lakshmi Murthy

Venkatchalam Krishnan

Dattatraya Haribhau Gholap

Mallinamadugu Jogimarappa Yanjarappa

Gurpreet Singh Kapur

Biswanath Sarkar

Satheesh Vetterkunnel Kumaran

Pankaj Kumar Kasliwal

Swapan Kumar Ghosh

Ashok Kumar Tiwari

Bandaru Venkata Hari Prasad Gupta

Vutukuru Lakshmi Narasimha Murthy

Ashok Kumar Tewari

Satayen Kumar Das

Bandaru Venkata Hari P Gupta

Ventachalam Krishnan

Ramakrishnan Ramanarayanan

Konduri Lakshminarayana

Meeta Sharma

Prabhat Kumar Saxena

Suresh Kumarshah

Vinod Ramchandra Upadhyay

Deepa Meghavathu

Wadharwa Ram Kalsi

Kasliwal Pankaj

Jai Prakash Singh

Kawliwal Pankaj

Pramod Kumar

Nagesh Samant

Mohan Kuvettu Prabhu

Ravichandran Gopal

Krishnan Venkatachalam

Kashi Nath Bhattacharya

Priya Bandhu Chowdhury

Suhas Ranjan Gun

Vutukuru Lakshmi Narasimh Murthy

Achinta Kumar Roy

Umanand Sharma

Santosh Kumar Chanda

Awadhesh Kumar Sinha

Gopal Ravi Chandran

Ganga Shankar Misra

Ganga Sanker Mishra

A process is disclosed for producing needle coke from heavy atmospheric distillation residues having sulfur no more than 0.7 wt %, which process involves the steps of heating the feedstock to a temperature in the range of 440 to 520&#xb0; C. for thermal cracking in a soaking column under pressure in the range of 1 to 10 kg/cmto separate the easily cokable material, separating the cracked products in a quench column and a distillation column and then subjecting the hydrocarbon fraction from the bottom of the quench column and a hydrocarbon fraction having a boiling point in the range of 380 to 480&#xb0; C. from the distillation column and/or any other suitable heavier hydrocarbon streams in a definite ratio depending on certain characteristic parameters to thermal cracking in a second soaking column at a temperature of 460 to 540&#xb0; C., pressure in the range of 2 to 20 kg/cmin presence of added quantity of steam for formation of a mesophase carbonaceous structure which on steam stripping and cooling forms a solid crystalline coke suitable for manufacturing of graphite electrode of large diameter having co-efficient of thermal expansion lower than 1.1&#xd7;10/&#xb0; C. measured on graphite artifact in the temperature range of 25 to 525&#xb0; C.

Process for the production of needle coke

The present invention relates to a process for the conversion of hydrocarbon streams with 95% true boiling point less than 400&#xb0; C. to very high yield of liquefied petroleum gas in the range of 45-65 wt % of feed and high octane gasoline, the said process comprises catalytic cracking of the hydrocarbons using a solid fluidizable catalyst comprising a medium pore crystalline alumino-silicates with or without Y-zeolite, non crystalline acidic materials or combinations thereof in a fluidized dense bed reactor operating at a temperature range of 400 to 550&#xb0; C., pressure range of 2 to 20 kg/cm(g) and weight hourly space velocity in range of 0.1 to 20 hour, wherein the said dense bed reactor is in flow communication to a catalyst stripper and a regenerator for continuous regeneration of the coked catalyst in presence of air and or oxygen containing gases, the catalyst being continuously circulated between the reactor-regenerator system.

Process for conversion of hydrocarbons to saturated LPG and high octane gasoline

This invention provides a resid cracking apparatus comprising a riser, reactor, stripper cum separator with adjustable outlets in flow communication with adsorbent and catalyst regenerators for converting hydrocarbon residues containing higher concentration of conradson carbon content, poisonous metals such as nickel & vanadium and basic nitrogen etc., into lighter and valuable products and a process thereof.

Resid cracking apparatus with catalyst and adsorbent regenerators and a process thereof

According to this invention, there is provided a process and apparatus for catalytic cracking of various petroleum based heavy feed stocks in the presence of solid zeolite catalyst and high pore size acidic components for selective bottom cracking and mixtures thereof, in multiple riser type continuously circulating fluidized bed reactors operated at different severities to produce high yield of middle distillates, in the range of 50&#x2013;65 wt % of fresh feed.

Multi stage selective catalytic cracking process and a system for producing high yield of middle distillate products from heavy hydrocarbon feedstocks

The present invention relates to an improved process for obtaining sodium silicate alkali solution depleted of sodium salt and enriched in silica from a mother liquor recovered after isolation of molecular sieves and more particularly, the present invention relates to a process for recycling mother liquor obtained after the isolation of molecular sieves for the preparation of fresh molecular sieves or as a binder for producing Fluid Catalytic Cracking (FCC) catalyst.

Process for preparing sodium silicate alkali solution depleted of sodium salt and enriched in silica

A process for the preparation of a stabilized dual zeolite catalyst-comprising two types of zeolites, a low silica molecular sieve and a stabilized high silica zeolite is disclosed. The catalyst is useful for cracking heavier hydrocarbons into lighter useful products.

Stabilized dual zeolite single particle catalyst composition and a process thereof

A process for preparing bi-functional catalyst for Fluid Catalytic Cracking (FCC), that comprises molecular sieves, modified clay and semi-basic alumina and the catalyst for highly effective cracking of high boiling petroleum feedstock to provide simultaneously, enhanced yields of Liquefied Petroleum Gas (LPG) and reduction of undesirable bottoms.

Process for preparation of bi-functional fluid catalytic cracking catalyst composition

The present invention provides a process for the upgradation of petroleum residue into useful fractions by subjecting petroleum residue in the presence of a solvent and ferrous sulphate catalyst to a pressure in the range of 10 atm. to 120 atm., temperature in the range of 380-420&deg; C., for a period in the range of 0-120 minutes, in a reactor vessel, in an inert atmosphere. The charge is then cooled to room temperature and the product gas released through scrubbers. The residue is re-heated, if required, for free flow of liquid product. The resulting liquid product is distilled to obtain useful fractions.

Process for the upgradation of petroleum residue

A process for preparing a hydrocarbon conversion catalyst for use in a Fluid Catalyst Cracking (FCC) unit includes the steps of preparing a modified alumina-silica composite by reacting alumina with an acid to obtain an acidified alumina, aging the acidified alumina for from 0.25 to 60 hours, adding a silica source to the acidified alumina to obtain the composite; preparing a dispersed precursor slurry of the modified alumina-silica composite, and a rare earth exchanged USY zeolite (REUSY) containing at least one rare earth oxide present in an amount ranging from 3.8 to 4.0 wt %, and optionally kaolin clay; spray-drying the slurry to obtain spherical particles; and subjecting the spherical particles to calcination.

Process for the preparation of a catalyst composite

A fluid catalytic cracking additive composition to obtain enhanced yield of Liquified Petroleum Gas in catalytic cracking of high boiling petroleum feed stocks comprising 4 to 20 wt. % aluminum phosphate composite, 1-40 wt. % crystalline molecular sieve Zeolites from the group selected from mordenite ZSM-5, Beta and mixtures thereof and 40-90 wt. % clay.

Process for the preparation of fluid catalytic cracking catalyst additive composition

A fluidized catalytic cracking process for catalytically cracking a feed to lighter products includes introducing a heated catalyst and the feed into a bottom riser of a fluidized catalytic cracking apparatus and allowing the heated catalyst and the feed to preaccelerate upwardly within the bottom riser as a mixture; flowing the mixture upwardly from the bottom riser through a plurality of microriser tubes disposed within a regenerator under conditions effective to cause a cracking reaction of the hydrocarbons and result in a mixture including coked catalyst and hydrocarbon vapors; passing the mixture from the microriser tubes through a catalyst separator for separating the coked catalyst from the hydrocarbon vapors; collecting coked catalyst in a stripper for stripping out hydrocarbon vapors carried along with the coked catalyst and introducing the coked catalyst collected into a regenerator; simultaneous with flowing the mixture, combusting the coked catalyst within the regenerator under conditions effective to cause regeneration of the catalyst so that hot regenerated catalyst is produced and heat transferred to the microriser tubes; introducing the hot regenerated catalyst from the regenerator into the bottom riser for facilitating continuous operation; and directing hydrocarbon vapors from the catalyst separator and from the stripper to a fractionator for separation of products.

Fluidized catalytic cracking process

This invention relates to a catalyst composition capable of effecting selective oligomerisation of olefins contained in cracked refinery distillate streams, comprising of olefins, aromatics, paraffins and cycloparaffins. The catalyst composition gives very high conversion of olefins to poly olefins, which after distillation and stabilization by hydrogenation affords lubricating oil base stocks. The catalyst composition comprises of an aluminum halide and a transition metal alkoxide belonging to group IVB.

Oligomerization of alpha-olefins

A process for converting undesirable olefinic hydrocarbon streams to hydrogen and petrochemical feedstock e.g. light olefins in C.sub.2 -C.sub.4 range and aromatics especially toluene and xylenes, which comprises simultaneous cracking and reforming at olefin rich hydrocarbons using a catalyst consisting of dehydrogenating metal components, shape selective zeolite components and large pore acidic components in different proportions in a circulating fluidized bed reactor-regenerator system having reactor temperature within 450-750.degree. C. and WHSV of 0.1-60 hour.sup.-1.

Upgradation of undesirable olefinic liquid hydrocarbon streams

A fluidized catalytic cracking apparatus includes a riser containing a regenerated catalyst and adsorbant, and has a first inlet for introduction of high velocity steam, a second inlet for introduction of a feed stream containing heavy residual fractions with high concentrations of conradson coke, metals including vanadium and nickel, and additional poisons including nitrogen, a third inlet for introduction of an adsorbent, and a fourth inlet disposed above the third inlet means for introduction of a regenerated catalyst, the adsorbent having a particle size which is larger than that of the regenerated catalyst. A stripper is provided into which the riser extends for causing separation of a hydrocarbon fraction from spent catalyst and adsorbent, and a separator is connected to the stripper and has a base, an inlet at the base for introduction of steam in the upward direction so as to provide a transport velocity in the upward direction for the spent catalyst and cause a separation of the particles of the spent catalyst from the adsorbent in use. A regenerator is connected to the separator and has an outlet and is in flow communication with the fourth inlet for introduction of the regenerated catalyst into the riser. A burner is provided for receiving the adsorbent from the separator and for causing a regeneration thereof, the burner having an inlet for introduction of oxygen containing gas and an outlet in flow communication with the third inlet for introduction of the adsorbent into the riser. A lift line is connected between the separator and the regenerator for allowing a flow of the spent catalyst from the separator into the regenerator while leaving the adsorbent within the separator in a fluidized condition the lift line having a plurality of steam inlets disposed at different elevations along its length for introduction of steam to provide said transport velocity.

Fluidized catalytic cracking process and apparatus

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Haryana, India

Sobhan Ghosh