Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pretreatment of coal

a technology of pretreatment and coal, applied in the direction of liquid carbonaceous fuels, solid fuels, petroleum industry, etc., can solve the problem of slow production of methane, achieve the effect of avoiding conventional mining costs and increasing the volume of bioconversion per unit tim

Inactive Publication Date: 2009-08-06
IOWA STATE UNIV RES FOUND +1
View PDF10 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019]The solubilizing solvent system of the present invention could be injected into the coal bed, thus avoiding conventional mining costs. For example, in a process for bioconverting coal by bacterial bioconversion, partially “etching” away the coal surfaces in coal bed cracks would expose relatively huge coal surface areas for methanogenic bacteria to multiply, thereby considerably raising the volume of bioconversion per unit time.

Problems solved by technology

As is typical with bacterial processes, however, the production of methane is slow.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pretreatment of coal
  • Pretreatment of coal
  • Pretreatment of coal

Examples

Experimental program
Comparison scheme
Effect test

example 1

Solubility of Lignite in P(OCH2)3CEt

[0070]Lignite was mixed in a solution of P(OCH2)3CEt / water and reacted at 150 deg C. The sample was found to be 66% soluble in P(OCH2)3CEt / water compared to a similar sample that was found to be only 12% soluble in pyridine.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention is directed toward a method of solubilizing coal. The method includes providing coal and providing an oxoacid ester of phosphorus or a mixture of an oxoacid of phosphorus and an alcohol. A blend of the coal, the oxoacid ester of phosphorus or the mixture of the oxoacid of phosphorus and alcohol is formed. The blend is then treated under conditions effective to solubilize the coal.

Description

[0001]This application claims benefit of the priority date of U.S. Provisional Patent Application Ser. No. 61 / 025,187, filed Jan. 31, 2008, which is hereby incorporated by reference in its entirety.[0002]The subject matter of this application was made with support from the United States Government under Department of Energy, Grant No. DE-AC02-06CH11358. The U.S. Government has certain rights.FIELD OF THE INVENTION[0003]The present invention relates to solubilization of coal.BACKGROUND OF THE INVENTION[0004]In the study of coal structure, organic solvents are often used to extract coal components. These solvents include carbon disulfide, N-methyl-2-pyrrolidinone, pyridine, tetrahydrofuran, and tetracyanoethylene which are used separately or in combination (Shui, H. et al., Fuel, 85: 1798 (2006) and references therein; Larsen, J. Energy &Fuels, 4:107 (1990) and references therein; Takanohashi, T. et al. Energy &Fuels, 9: 788 (1995) and references therein; Liu, H.-T. et al. Energy &Fue...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C10L1/26
CPCC10L9/10C10L1/326
Inventor VERKADE, JOHN G.OSHEL, REED E.DOWNEY, ROBERT A.
Owner IOWA STATE UNIV RES FOUND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com