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Title: Fluidized bed gasification of extracted coal

Abstract

Coal or similar carbonaceous solids are extracted by contacting the solids in an extraction zone (12) with an aqueous solution having a pH above 12.0 at a temperature between 65.degree. C. and 110.degree. C. for a period of time sufficient to remove bitumens from the coal into said aqueous solution and the extracted solids are then gasified at an elevated pressure and temperature in a fluidized bed gasification zone (60) wherein the density of the fluidized bed is maintained at a value above 160 kg/m.sup.3. In a preferred embodiment of the invention, water is removed from the aqueous solution in order to redeposit the extracted bitumens onto the solids prior to the gasification step.

Inventors:
 [1];  [2];  [3];  [1]
  1. Houston, TX
  2. Westfield, NJ
  3. Baton Rouge, LA
Issue Date:
Research Org.:
Exxon Research and Engineering Co
OSTI Identifier:
865942
Patent Number(s):
4604105
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES
DOE Contract Number:  
ET-78-C-01-2777
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fluidized; bed; gasification; extracted; coal; similar; carbonaceous; solids; contacting; extraction; zone; 12; aqueous; solution; ph; temperature; 65; degree; 110; period; time; sufficient; remove; bitumens; gasified; elevated; pressure; 60; density; maintained; value; 160; kg; preferred; embodiment; water; removed; redeposit; prior; step; carbonaceous solid; gasification zone; bed gasification; time sufficient; fluidized bed; preferred embodiment; aqueous solution; carbonaceous solids; elevated pressure; similar carbonaceous; extraction zone; extracted coal; /48/

Citation Formats

Aquino, Dolores C, DaPrato, Philip L, Gouker, Toby R, and Knoer, Peter. Fluidized bed gasification of extracted coal. United States: N. p., 1986. Web.
Aquino, Dolores C, DaPrato, Philip L, Gouker, Toby R, & Knoer, Peter. Fluidized bed gasification of extracted coal. United States.
Aquino, Dolores C, DaPrato, Philip L, Gouker, Toby R, and Knoer, Peter. Wed . "Fluidized bed gasification of extracted coal". United States. https://www.osti.gov/servlets/purl/865942.
@article{osti_865942,
title = {Fluidized bed gasification of extracted coal},
author = {Aquino, Dolores C and DaPrato, Philip L and Gouker, Toby R and Knoer, Peter},
abstractNote = {Coal or similar carbonaceous solids are extracted by contacting the solids in an extraction zone (12) with an aqueous solution having a pH above 12.0 at a temperature between 65.degree. C. and 110.degree. C. for a period of time sufficient to remove bitumens from the coal into said aqueous solution and the extracted solids are then gasified at an elevated pressure and temperature in a fluidized bed gasification zone (60) wherein the density of the fluidized bed is maintained at a value above 160 kg/m.sup.3. In a preferred embodiment of the invention, water is removed from the aqueous solution in order to redeposit the extracted bitumens onto the solids prior to the gasification step.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

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