Hindustan Petroleum Corporation Limited

Somanath Kukade

Pramod Kumar

Venkata Chalapathi Rao Peddy

Venkateswarlu Choudary Nettem

Sriganesh Gandham

Ramachandrarao Bojja

Narasimharao Kanna

Hrishikesh Shriram Shidhaye

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.

FCC additive composition for bottoms cracking and a process for preparation thereof

The instant disclosure provides a composition for fluid catalytic cracking of petroleum based feedstock into useful short chain olefins. The composition comprising: 76-86% of a non-zeolitic material; and 2-30% of at least one zeolite material, the percentage being based on weight of the catalyst composition, wherein one of the zeolites has been modified with 0.1-2.5 wt % metal. The said catalyst was found to be selective in enhancing the usable propylene gas content, while reducing the undesirable dry gas content of the cracked olefinic products. The present disclosure also provides a process for the preparation of the composition. The present disclosure also provides an apparatus () and process () for fluid catalytic cracking to obtain light olefins. The apparatus comprises a second riser () that includes a lower dense riser () and upper dilute riser (). Further, the lower dense riser () has a diameter that is 1.1 to 2 times that of the upper dilute riser ().

Fluid catalytic cracking (FCC) process and apparatus for production of light olefins

Methods and apparatus for fluid catalytic cracking (FCC) of a hydrocarbon feedstock includes a first reactor (), a second reactor (), and a regenerator assembly () shared and connected with the two reactors. The regenerator assembly () includes a regenerator vessel which has a partition () dividing the regenerator vessel into a first subunit () and a second subunit (); a plurality of regenerator inlets for receiving a first spent catalyst and second spent catalyst by the first subunit () and the second subunit (); a plurality of regenerator inlet for receiving a first spent catalyst and a second spent catalyst by the first subunit () and the second subunit () respectively; an air controller () to allow for has flow to an air distributor () for supply of the gas to the first subunit () and the second subunit () to combust coke deposited on the first and the second spent catalyst, separately, to a desired degree to generate a fully and a partially regenerated catalyst.

Methods and apparatus for fluid catalytic cracking

In accordance with the present subject matter there is provided a catalyst composition including 70-98% of a non-zeolitic material; and 2-30% of at least one zeolite material, the percentage being based on weight of the catalyst composition. The subject matter also relates to a method for preparation of the catalyst composition. The subject matter further relates to a process for the fluid catalytic cracking of a hydrocarbon feedstock.

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Bengaluru, India

Somanath Kukade