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Catalytic distillation process for hydroprocessing Fischer-Tropsch liquids

a technology of distillation tower and hydroprocessing process, which is applied in the direction of hydrocarbon oil cracking hydrocarbon oil treatment, etc., can solve the problems of large capital cost, large amount of fischer-tropsch liquid upgrading/refining units, and inability to achieve the desired presence of ft oxygenates and olefins in synthetic fuel products

Inactive Publication Date: 2007-09-13
SYNTROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] Embodiments of the invention meets these and other needs by providing a catalytic distillation system which combines two fundamental unit operations

Problems solved by technology

The Fischer-Tropsch process used to make synthetic transportation fuels, however, results in a syncrude product containing oxygenates (“FT oxygenates”) and heavy boiling point components.
The presence of FT oxygenates and olefins in synthetic fuel products is not desired because of thermal stability issues and regulatory constraints.
By providing multiple processes, Fischer-Tropsch liquids upgrading / refining units are often large and involve large capital costs.

Method used

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  • Catalytic distillation process for hydroprocessing Fischer-Tropsch liquids
  • Catalytic distillation process for hydroprocessing Fischer-Tropsch liquids
  • Catalytic distillation process for hydroprocessing Fischer-Tropsch liquids

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Embodiment Construction

[0012] The term “Cx”, where x is a number greater than zero, refers to a hydrocarbon compound having predominantly a carbon number of x. As used herein, the term Cx may be modified by reference to a particular species of hydrocarbons, such as, for example, C5 olefins. In such instance, the term means an olefin stream comprised predominantly of pentenes but which may have impurity amounts, i.e. less than about 10%, of olefins having other carbon numbers such as hexene, heptene, propene, or butene. Similarly, the term “Cx+” refers to a stream wherein the hydrocarbons are predominantly those having a hydrocarbon number of x or greater but which may also contain impurity levels of hydrocarbons having a carbon number of less than x. For example, the term C15+ means hydrocarbons having a carbon number of 15 or greater but which may contain impurity levels of hydrocarbons having carbon numbers of less than 15. The term “Cx-Cy”, where x and y are numbers greater than zero, refers to a mixtu...

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Abstract

The invention provides a catalytic distillation system which combines two fundamental unit operations, chemical reaction and distillation in a single piece of equipment for hydrocracking and hydrotreating of Fischer-Tropsch liquids.

Description

PRIOR RELATED APPLICATIONS [0001] Not applicable. FEDERALLY SPONSORED RESEARCH STATEMENT [0002] Not applicable. REFERENCE TO MICROFICHE APPENDIX [0003] Not applicable. FIELD OF THE INVENTION [0004] The invention relates to a method of producing transportation fuels derived from the products of a Fischer-Tropsch synthesis. More specifically, the invention relates to hydroprocessing Fischer-Tropsch liquids using a catalytic distillation tower. BACKGROUND OF THE INVENTION [0005] Synthetic transportation fuels are increasingly in demand because they contain no sulfur or aromatics and typically have high cetane numbers. The Fischer-Tropsch process used to make synthetic transportation fuels, however, results in a syncrude product containing oxygenates (“FT oxygenates”) and heavy boiling point components. The FT oxygenates typically include primary and internal alcohols, which constitute the major portion of the total FT oxygenate, as well as aldehydes, ketones and acids. The heavy boilin...

Claims

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Application Information

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IPC IPC(8): C10G65/00C10G69/00C10G47/00
CPCC10G2/32C10G2300/4087C10G49/002
Inventor ABHARI, RAMIN
Owner SYNTROLEUM
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