Method for producing hydrocarbon material

Patent metadata

Field	Value
Publication number	US-9533924-B2
Application number	US-201214008464-A
Country	US
Kind code	B2
Filing date	Mar 30, 2012
Priority date	Mar 31, 2011
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A method for producing a hydrocarbon material from a C 5 raffinate which is obtained as an extracted residual oil after separating at least part of the isoprene by extraction distillation from a C 5 fraction which is produced as a byproduct when thermally cracking naphtha to produce ethylene and has C 5 organic compounds as main ingredients comprising, a gas-phase thermal cracking step of gasifying the C 5 raffinate to thermally crack at least part of the C 10 diolefins which are contained in the gasified C 5 raffinate, a desulfurization step, after the gas-phase thermal cracking step, of removing at least part of the sulfur-containing ingredients which are contained in the gasified C 5 raffinate after the gas-phase thermal cracking step in the gas-phase state, and a hydrogen addition step, after the desulfurization step, of hydrogenating at least part of the carbon-carbon double bonds of at least one selected from diolefins and olefins which are contained in the gasified C 5 raffinate after the desulfurization step in the gas-phase state, so as to obtain a hydrocarbon material with a total concentration of diolefins and olefins of 0.5 wt % or less is provided.

First claim

The invention claimed is:

1. A method for producing a hydrocarbon material from a C 5 raffinate which is obtained as an extracted residual oil after separating at least part of isoprene by extraction distillation from a C 5 fraction which is produced as a byproduct when thermally cracking naphtha to produce ethylene and has C 5 organic compounds as main ingredients comprising,
a gas-phase thermal cracking step of gasifying said C 5 raffinate which contains dicyclopentadiene in 10 wt % or more to thermally crack at least part of C 10 diolefins which are contained in the gasified C 5 raffinate,
a desulfurization step, after said gas-phase thermal cracking step, of removing at least part of the sulfur-containing ingredients which are contained in the gasified C 5 raffinate after said gas-phase thermal cracking step in the gas-phase state, and
a hydrogen addition step, after said desulfurization step, of hydrogenating at least part of the carbon-carbon double bonds of at least one selected from diolefins and olefins which are contained in the gasified C 5 raffinate after said desulfurization step in the gas-phase state, so as to obtain a hydrocarbon material with a total concentration of diolefins and olefins of 0.5 wt % or less,
wherein said desulfurization step is performed in a reducing atmosphere under conditions of a pressure of 0.3 MPa or less and a temperature of 180 to 400° C.

2. The method for producing a hydrocarbon material as set forth in claim 1 wherein said desulfurization step is performed using a catalyst having a supported nickel as a main ingredient.

3. The method for producing a hydrocarbon material as set forth in claim 1 wherein said hydrogen addition step is performed in a reducing atmosphere under conditions of a pressure of 0.3 MPa or less and a temperature of 140 to 400° C.

4. The method for producing a hydrocarbon material as set forth in claim 1 wherein said hydrogen addition step is performed using a catalyst having a supported nickel as a main ingredient.

5. A hydrocarbon material which is obtained by the method as set forth in claim 1 .

6. The hydrocarbon material as set forth in claim 5 which is a raw material for an ethylene cracker.

7. The hydrocarbon material as set forth in claim 5 which is used as a gasoline base material.

Assignees

• Yachi Yoshihide
• Miki Hideaki
• Zeon Corp

Inventors

• Yachi Yoshihide
• Miki Hideaki

Classifications

• C10G2400/02

  Gasoline · CPC title

• C07C5/05 Primary

  Partial hydrogenation · CPC title

• C10G45/36

  containing nickel or cobalt metal, or compounds thereof · CPC title

• C10G69/06 Primary

  including at least one step of thermal cracking in the absence of hydrogen · CPC title

• C07C4/04

  Thermal processes {(C07C4/025 takes precedence)} · CPC title