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US 10,590,354 B2Granted
Process for the conversion of crude oil to light olefins, aromatics and syngas
AssigneeIndian Oil Corporation Limited
InventorsPonoly Ramachandran Pradeep, Arjun Kumar Kottakuna, Terapalli Hari Venkata Devi Prasad, Satyen Kumar Das, Debasis Bhattacharyya, Sanjiv Kumar Mazumdar, Sankara Sri Venkata Ramakumar
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Abstract
The present invention relates to a process and system for complete conversion of crude oils by integrating delayed coking process, high severity catalytic cracking process and naphtha cracking processes along with olefin recovery section, aromatic recovery section and gasifier section to maximize the crude oil conversion to valuable products like light olefins, aromatics and chemicals.
Claims16
An integrating process for conversion of crude oil to light olefin, aromatic, syngas and valuable chemical, the process comprising:
- (i) charging the crude oil to a desalter unit to obtain a desalted crude oil;
- (ii) routing the desalted crude oil to a pre-fractionator column to separate the desalted crude oil in to a lighter hydrocarbon material boiling below 200° C., a hydrocarbon boiling in the range of 200-370° C. and a heavier hydrocarbon material boiling above 370° C.;
- (iii) routing the lighter hydrocarbon material to a naphtha cracker unit to obtain a high aromatic gasoline stream;
- (iv) routing the heavier hydrocarbon material boiling above 370° C. from the pre-fractionator column to a delayed coker unit, wherein the hydrocarbon material boiling above 370° C. undergoes thermal cracking reaction to obtain a gaseous products containing LPG, lighter product materials boiling in the range of naphtha, coker gasoil stream and solid petroleum coke;
- (v) routing the hydrocarbons boiling in the range of 200-370° C. from the pre-fractionator column to a high severity catalytic cracker unit wherein the hydrocarbons boiling in the range of 200-370° C. undergo catalytic cracking reaction to generate a clarified oil stream, gaseous products containing LPG, light cycle oil product and lighter products boiling in the range of naphtha;
- (vi) routing the gaseous products containing LPG generated from the delayed coker unit and the gaseous products containing LPG generated from the high severity catalytic cracking unit to an olefin recovery section to obtain light olefins;
- (vii) routing the high aromatic gasoline stream generated from the naphtha cracker unit and the light cycle oil product from the high severity catalytic cracking unit to an aromatic recovery section for recovery of aromatic products;
- and
- (viii) routing the solid petroleum coke produced in the delayed coker unit to a coke gasifier unit where it is converted to syngas, and the syngas is sent to a chemical production section to obtain a valuable chemicals comprising methanol and light olefins.
6 more elements
A system to implement an integrating process for conversion of crude oil to light olefin, aromatic, syngas and valuable chemical, the system comprising:
- (i) a desalter unit to obtain a desalted crude oil from a crude oil;
- (ii) a pre-fractionator column to receive the desalted crude oil from the desalter unit and separate the desalted crude oil in to a lighter hydrocarbon material boiling below 200° C., hydrocarbon boiling in the range of 200-370° C. and heavier hydrocarbon material boiling above 370° C.;
- (iii) a naphtha cracker unit to receive the lighter hydrocarbon material boiling below 200° C. from the pre-fractionator column and generate a high aromatic gasoline stream;
- (iv) a delayed coker unit to receive the heavier boiling hydrocarbon material boiling above 370° C. from the pre-fractionator column, wherein the hydrocarbon material undergoes thermal cracking reaction in the delayed coker unit to generate gaseous products containing LPG, lighter product materials boiling in the range of naphtha, coker gasoil stream and solid petroleum coke;
- (v) a high severity catalytic cracker unit to receive the hydrocarbon boiling in the range of 200-370° C. from the pre-fractionator column wherein the hydrocarbons boiling in the range of 200-370° C. undergo catalytic cracking reaction to generate a clarified oil stream, gaseous products containing LPG, light cycle oil product and lighter products boiling in the range of naphtha;
- (vi) an olefin recovery section to receive the gaseous products containing LPG generated from the delayed coker unit and the gaseous products containing LPG generated from the high severity catalytic cracking unit to provide light olefins;
- (vii) an aromatic recovery section to receive the high aromatic gasoline stream generated from the naphtha cracker unit and light cycle oil product from the high severity catalytic cracking unit for recovery of aromatic products;
- and
- (viii) a coke gasifier unit to receive the solid petroleum coke produced in the delayed coker unit for converting it to syngas, and a chemical production section to receive the syngas for generating a valuable chemicals comprises methanol and light olefin.
6 more elements
Dependencies are inferred from the claim text.