Thermal cracking vaporization unit construction

a technology of vaporization unit and thermal cracking, which is applied in the direction of thermal non-catalytic cracking, lighting and heating apparatus, hydrocarbon oil treatment products, etc., can solve the problems of difficult if not impossible to provide a boiling range for whole crude oil, normally has first been subjected to substantial and expensive processing

Inactive Publication Date: 2008-04-03
EQUSR CHEM LP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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, normally has first been subjected to substantial, expensive processing before it reaches that plant.

Method used

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Examples

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Embodiment Construction

[0028]The terms “hydrocarbon,”“hydrocarbons,” and “hydrocarbonaceous” as used herein do not mean materials strictly or only containing hydrogen atoms and carbon atoms. Such terms include materials that are hydrocarbonaceous in nature in that they primarily or essentially are composed of hydrogen and carbon atoms, but can contain other elements such as oxygen, sulfur, nitrogen, metals, inorganic salts, and the like, even in significant amounts.

[0029]The term “gaseous” as used in this invention means one or more gases in an essentially vaporous state, for example, steam alone, a mixture of steam and hydrocarbon vapor, and the like.

[0030]The term “coke” as used in this invention means any high molecular weight carbonaceous solid, and includes compounds formed from the condensation of polynuclear aromatics.

[0031]An olefin producing plant useful with this invention would include a pyrolysis (thermal cracking) furnace for initially receiving and cracking the feed. Pyrolysis furnaces for s...

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Abstract

In the process of employing a liquid whole crude oil and/or natural gas condensate in a thermal cracking process that uses a vaporization/mild cracking unit upstream of a thermal cracking furnace, a martensitic steel is employed in the construction of the unit and the unit is subjected to a de-hydrogenation treatment.

Description

BACKGROUND OF INVENTION[0001]1. Field of Invention[0002]This invention relates to the thermal cracking of whole crude oil, natural gas condensate and / or mixtures thereof using a vaporization / mild cracking unit upstream of a thermal cracking furnace. More particularly, this invention relates to the construction of a vaporization / mild cracking unit from a martensitic steel not heretofore used in pressure vessel construction.[0003]2. Description of the Prior Art[0004]Thermal cracking (pyrolysis) 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 or otherwise fractionating whole crude oil, is mixed with steam which serves as a diluent to keep the hydrocarbon molecules separated. The steam / hydrocarbon mixture i...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G9/26
CPCC10G9/20C10G11/20C10G2400/20C10G2400/22F23M2900/05004
Inventor KIRKHAM, KENNETH K.CLEAVINGER, JAMES G.KING, RALPH E.
Owner EQUSR CHEM LP
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