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Hydrogenation of solid carbonaceous materials using mixed catalysts

Inactive Publication Date: 2011-05-26
CHEVROU USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]The present invention relates to a process for converting solid carbonaceous material to a liquid product, comprising maintaining a solid carbonaceous material in the presence of at least one active sou

Problems solved by technology

Such conventional processes leave much room for improving the liquid and / or gas yields of hydroconverted carbonaceous materials, as well as the quality of the liquid and / or gas products that are obtained from such processes.

Method used

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  • Hydrogenation of solid carbonaceous materials using mixed catalysts
  • Hydrogenation of solid carbonaceous materials using mixed catalysts
  • Hydrogenation of solid carbonaceous materials using mixed catalysts

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0152]Run 1—A solution of a mixed catalyst precursor iron nitrate (Fe(NO3)3.9H2O) and zinc nitrate (Zn(NO3)2.6H2O) dissolved in methanol was prepared. A sample of moisture-free coal feed (i.e. less than 1% by weight water) having a particle size of less than 100 mesh was impregnated to incipient wetness with the solution, at a solution to coal weight ratio of 1 to 1, to yield an iron to coal loading on a dry, ash-free basis of 1% iron and a zinc to coal loading on a dry, ash-free basis of 1 wt % zinc. The catalyst impregnated coal was then dried under nitrogen at 105° C. for up to 24 hr for to remove the methanol.

[0153]The dried catalyst impregnated coal was mixed with an FCC-type process oil (500° F.+cut) hydrocarbonaceous liquid, at a hydrocarbonaceous liquid to coal ratio of 1.6 to 1. Elemental sulfur was added to sulfide the iron and zinc, at a sulfur to iron molar ratio of 2 to 1 and a sulfur to zinc ratio of 2 to 1.

[0154]The mixture was then heated quickly in a vessel to 200° ...

example 2

[0160]Run 4—Run 1 was repeated. Product yields tabulated for Run 4 in Table I indicate excellent coal conversions and liquid yield for Run 4.

example 3

[0161]Run 5—Run 1 was repeated using a iron nitrate (Fe(NO3)3.9H2O) and zinc nitrate (Zn(NO3)2.6H2O) mixed catalyst precursor at an iron to coal loading on a dry, ash-free basis of 1 wt % iron, and a zinc to coal loading on a dry, ash-free basis of 1 wt % zinc. No elemental sulfur was added. Product yields tabulated for Run 5 in Table I indicate relatively poor coal conversation and liquid yield.

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Abstract

This invention encompasses systems and methods for converting solid carbonaceous material to a liquid product, comprising maintaining a solid carbonaceous material in the presence of at least one active source of zinc at a reaction temperature of greater than 350° C. and at a pressure in the range of 300 to 5000 psig for a time sufficient to form a liquid product.

Description

TECHNICAL FIELD[0001]This invention relates to systems and processes for pretreating a carbonaceous material, for liquefying a carbonaceous material, and for improving efficiency of carbonaceous material liquefaction.BACKGROUND[0002]Much work has been done over the years on processes for obtaining liquid and gaseous products from solid carbonaceous materials such as coal. The known processes include both catalytic and non-catalytic reactions. In catalytic processes, the hydrocarbonaceous material is typically slurried with a solvent and a catalyst, and is reacted in the presence of molecular hydrogen at elevated temperatures and pressures.[0003]U.S. Pat. No. 5,246,570, for example, describes a coal liquefaction process in which a mixture of coal, catalyst, and solvent are rapidly heated to a temperature of 600-750° F. in a preheater, and then reacted under coal liquefaction conditions in a liquefaction reaction. U.S. Pat. No. 5,573,556 describes a process for converting a carbonaceo...

Claims

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Application Information

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IPC IPC(8): C10G1/08
CPCB01J23/06C10G1/086B01J37/20B01J23/80
Inventor KUPERMAN, ALEXANDER E.HAN, JINYI
Owner CHEVROU USA INC