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Olefin production utilizing whole crude oil/condensate feedstock and selective hydrocracking

a technology of whole crude oil and hydrocracking, which is applied in the field of olefin formation, can solve the problems of difficult if not impossible to provide a boiling range for whole crude oil, the starting feedstock of a conventional olefin production plant has first been subjected to substantial, expensive processing, etc., and achieves the effect of reducing sulfur content and increasing the productivity of the cracking process

Inactive Publication Date: 2009-02-26
EQUSR CHEM LP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0024]In accordance with this invention, there is provided a process for utilizing whole crude oil and / or natural gas condensate as the feedstock for an olefin plant, as defined above, in combination with a selective hydrocracking process in a manner which increases the productivity of the cracking process and at the same time reduces the sulfur content of various products recovered from that olefin plant.

Problems solved by technology

As such, it is difficult if not impossible to provide a boiling range for whole crude oil.
The starting feedstock for a conventional olefin production plant, as described above, has first been subjected to substantial, expensive processing before it reaches that plant.
This approach would require a substantial amount of capital to build the column and outfit it with the normal reboiler and overhead condensation equipment that goes with such a column.
By use of this splitter, reboilers, overhead condensers, and related distillation column equipment are eliminated without eliminating the functions thereof, thus saving considerably in capital costs.

Method used

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  • Olefin production utilizing whole crude oil/condensate feedstock and selective hydrocracking
  • Olefin production utilizing whole crude oil/condensate feedstock and selective hydrocracking

Examples

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example

[0083]A natural gas condensate stream 5 characterized as Oso condensate from Nigeria is removed from a storage tank and fed directly into the convection section of a pyrolysis furnace 1 at ambient conditions of temperature and pressure. In this convection section, this condensate initial feed is preheated to about 350 F at about 60 psig, and then passed into a vaporization unit 11 wherein a mixture of gasoline and naphtha gases at about 350 F and 60 psig are separated from distillate liquids in zone 12 of that unit. The separated gases are removed from zone 12 for transfer to the radiant section of the same furnace for severe cracking in a temperature range of 1,450° F. to 1,550° F. at the outlet of radiant coil 29.

[0084]The hydrocarbon liquid remaining from feed 2, after separation from accompanying hydrocarbon gases aforesaid, is transferred to lower section 13 and allowed to fall downwardly in that section toward the bottom thereof. Preheated steam 21 at about 1,000 F is introduc...

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Abstract

A method for thermally cracking a feed composed of whole crude oil and / or natural gas condensate using a vaporizer to vaporize the feed before cracking same, recovering pyrolysis gas oil from the cracked feed, subjecting the recovered pyrolysis gas oil to hydrocracking to form a paraffinic hydrocracked product, and passing at least part of the hydrocracked product to the vaporizer as additional thermal cracking feed.

Description

BACKGROUND OF INVENTION[0001]1. Field of Invention[0002]This invention relates to the formation of olefins by thermal cracking of liquid whole crude oil and / or condensate derived from natural gas in a manner that is integrated with a hydrocracking operation. More particularly, this invention relates to utilizing whole crude oil and / or natural gas condensate as a feedstock for an olefin production plant that employs hydrocarbon thermal cracking in a pyrolysis furnace in combination with a hydrocracking operation in a manner that reduces the sulfur content of the products of that plant.[0003]2. Description of the Prior Art[0004]Thermal (pyrolysis) cracking of hydrocarbons is a non-catalytic petrochemical process that is widely used to produce olefins such as ethylene, propylene, butenes, butadiene, and aromatics such as benzene, toluene, and xylenes.[0005]Basically, a hydrocarbon feedstock, such as naphtha, gas oil or other fractions of whole crude oil that are produced by distilling ...

Claims

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Application Information

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IPC IPC(8): C10G69/04
CPCC10G9/00C10G69/06C10G47/00
Inventor HALSEY, RICHARD B.
Owner EQUSR CHEM LP
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