US 2021/0340449 A1 · PROCESS FOR MAXIMIZING PRODUCTION OF HEAVY NAPHTHA FROM A HYDROCARBON STREAM

Abstract

A process for maximizing production of heavy naphtha from a hydrocarbon stream is disclosed. The process comprises providing a hydrocarbon feed stream comprising diesel to a separation column to provide a light diesel stream and a heavy diesel stream. The heavy diesel stream is hydrocracked in the presence of a hydrogen stream and a first hydrocracking catalyst in a first hydrocracking reactor at a first hydrocracking pressure of 13790 kPa to 17237 kPa to provide a first hydrocracked effluent stream. The light diesel stream is hydrocracked in the presence of a hydrogen stream and a second hydrocracking catalyst in a second hydrocracking reactor at a second hydrocracking pressure of 3450 kPa to 6205 kPa to provide a second hydrocracked effluent stream. At least a portion of the first hydrocracked effluent stream and at least a portion of the second hydrocracked effluent stream are fractioned to produce heavy naphtha.

Claims20

Dependent claims

A process for maximizing production of heavy naphtha from a hydrocarbon stream comprising:

a) providing a hydrocarbon feed stream comprising diesel to a separation column to provide a light diesel stream and a heavy diesel stream;
b) hydrocracking the heavy diesel stream in the presence of a hydrogen stream and a first hydrocracking catalyst in a first hydrocracking reactor operating at first hydrocracking conditions comprising a first hydrocracking pressure of about 10340 kPa (1500 psig) to about 17237 kPa (2500 psig) to provide a first hydrocracked effluent stream;
c) hydrocracking the light diesel stream in the presence of a hydrogen stream and a second hydrocracking catalyst in a second hydrocracking reactor operating at second hydrocracking conditions comprising a second hydrocracking pressure of about 2410 kPa (350 psig) to about 6205 kPa (900 psig) to provide a second hydrocracked effluent stream;
and
d) fractionating at least a portion of the first hydrocracked effluent stream and at least a portion of the second hydrocracked effluent stream to produce heavy naphtha.

2 more elements

A process for maximizing production of heavy naphtha from a hydrocarbon stream comprising:

a) providing a hydrocarbon feed stream comprising diesel to a separation column to provide a light diesel stream and a heavy diesel stream;
b) hydrocracking the heavy diesel stream in the presence of a hydrogen stream and a first hydrocracking catalyst in a first hydrocracking reactor operating at first hydrocracking conditions comprising a first hydrocracking pressure of about 10340 kPa (1500 psig) to about 17237 kPa (2500 psig) to provide a first hydrocracked effluent stream;
c) hydrocracking the light diesel stream in the presence of a hydrogen stream and a second hydrocracking catalyst in a second hydrocracking reactor operating at second hydrocracking conditions comprising a second hydrocracking pressure of about 2410 kPa (350 psig) to about 6205 kPa (900 psig) to provide a second hydrocracked effluent stream;
d) fractionating at least a portion of the first hydrocracked effluent stream and at least a portion of the second hydrocracked effluent stream to provide a heavy naphtha fraction, a light diesel fraction, and a heavy diesel fraction;
and
e) passing at least a portion of the heavy diesel fraction to the first hydrocracking reactor;
and
f) passing at least a portion of the light diesel fraction to the second hydrocracking reactor to maximize the production of heavy naphtha.

5 more elements

A process for maximizing production of heavy naphtha from a hydrocarbon stream comprising:

a) providing a hydrocarbon feed stream comprising diesel to a separation column to provide a light diesel stream and a heavy diesel stream;
b) hydrocracking the heavy diesel stream and a vacuum gas oil stream in the presence of a hydrogen stream and a first hydrocracking catalyst in a first hydrocracking reactor at first hydrocracking conditions comprising a first hydrocracking pressure of about 10340 kPa (1500 psig) to about 17237 kPa (2500 psig) to provide a first hydrocracked effluent stream;
c) passing at least a portion of the first hydrocracked effluent stream to a first fractionation column to provide one or more fractionation products including a heavy naphtha stream, a heavy diesel fraction and a light diesel fraction;
d) hydrocracking the light diesel stream in a second hydrocracking reactor operating at second hydrocracking conditions comprising a second hydrocracking pressure of about 2410 kPa (350 psig) to about 6205 kPa (900 psig) to provide a second hydrocracked effluent stream;
e) passing the second hydrocracked effluent stream to a second fractionation column to provide one or more fractionation products including a heavy naphtha stream;
f) passing at least a portion of the heavy diesel fraction to the first hydrocracking reactor;
and
g) passing at least a portion of the light diesel fraction to the second hydrocracking reactor to maximize the production of heavy naphtha.

5 more elements

Dependencies are inferred from the claim text.

Process for maximizing production of heavy naphtha from a hydrocarbon stream

Life of this patent

Process for maximizing production of heavy naphtha from a hydrocarbon stream

Life of this patent

Abstract

Claims20