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US 11,634,649 B2Granted
Integrated pyrolysis and hydrocracking units for crude oil to chemicals
AssigneeLummus Technology Inc.
InventorsKandasamy Meenakshi Sundaram, Stephen J. Stanley, Ronald M. Venner, Ujjal K. Mukherjee
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Abstract
Integrated pyrolysis and hydrocracking systems and processes for efficiently cracking of hydrocarbon mixtures, such as mixtures including compounds having a normal boiling temperature of greater than 450° C., 500° C., or even greater than 550° C., such as whole crudes for example, are disclosed.
Claims5
A process for producing olefins and/or dienes, the process comprising:
- hydrocracking a liquid fraction to convert hydrocarbon components therein having a boiling point greater than 550° C. to hydrocarbons having a boiling point of less than 550° C. and recovering a hydrocracked effluent;
- separating the hydrocracked effluent to recover a light hydrocracked fraction and a heavy hydrocracked fraction;
- hydrocracking the heavy hydrocracked fraction to convert hydrocarbon components therein to naphtha range hydrocarbons and to recover a second hydrocracked effluent;
- separating the second hydrocracked effluent to recover a second light hydrocracked fraction comprising the naphtha range hydrocarbons, and a second heavy hydrocracked fraction;
- partially vaporizing the second heavy hydrocracked fraction to recover a vapor fraction and a hydrocracked liquid fraction;
- thermally cracking (i) the vapor fraction and (ii) the hydrocracked liquid fraction, to produce thermally cracked hydrocarbon effluents each containing a mixture of olefins and paraffins, wherein the thermally cracking comprises collectively thermally cracking the vapor fraction and the light hydrocracked fraction.
3 more elements
Dependencies are inferred from the claim text.