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Methods and compositions for controlling bulk density of coking coal

a technology of bulk density and coking coal, which is applied in the direction of waste based fuel, solid fuel, biofuel, etc., can solve the problems of increasing cost and rare bulk density of raw coking coal, and achieve the effect of improving throughput characteristics and reducing moisture content of coal

Inactive Publication Date: 2008-01-10
ECOLAB USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] Moreover, pollutant emissions, including total unburned hydrocarbons, carbon monoxide, particulate, sulfates, polyaromatic hydrocarbons (PAH), and nitrated PAH, may be lower than when diesel fuel is used to adjust the bulk density during the coking process.
[0011] The present invention can be of further benefit in that the compositions can reduce moisture content of the coal consequently, improving its through put characteristics.

Problems solved by technology

Raw coking coals rarely possess the requisite bulk density, primarily due to the presence of surface moisture on the coal.
There are several disadvantages to using diesel fuel.
Its cost has also escalated recently.

Method used

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Examples

Experimental program
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Effect test

example

Adjustment of Coal Bulk Density

[0061] Crude glycerin solution is obtained from a biodiesel synthesis process. In this embodiment, the crude glycerin component comprises about 80 weight percent of glycerin, about 10-11 weight percent of water, about 7 weight percent of sodium chloride, and about 1-2 weight percent of fatty acids and methyl esters thereof. The product is diluted with 42 weight percent of water to provide a 58 weight percent solution of the crude glycerin byproduct. The composition is applied to coal at 2 pints per ton (ppt). Two samples were created: one with the treated coal; and one without the glycerin treatment. No. 2 fuel oil was then added to both samples at identical oil concentration. At the oil concentration range of 4 ppt, the sample treated with glycerin exhibited a higher bulk density of about 1 lb per cubic foot.

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PUM

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Abstract

Compositions for adjusting coal bulk density and methods of using the compositions are provided. In an embodiment, the present invention provides methods of utilizing the compositions to adjust coal bulk density. The compositions can comprise one or more components selected from a group consisting of vegetable oils, animal fats, triglycerides, fatty acids, fatty acid methyl esters, fatty acid ethyl esters, and glycerin. These compositions can be derived from a biodiesel manufacturing process or transesterification reactions involving triglycerides.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This is a continuation-in-part of Ser. No. 11 / 561,150, filed Nov. 17, 2006 and a continuation-in-part of Ser. No. 11 / 490,193, filed Jul. 20, 2006, which is a continuation-in-part of Ser. No. 10 / 846,218, filed May 14, 2004, now U.S. Pat. No. 7,108,800.TECHNICAL FIELD [0002] This invention relates to controlling the bulk density of coking coal. More particularly, this invention concerns compositions to control coal bulk density comprising liquid hydrocarbons derived from biomass. The biomass liquid hydrocarbons can include vegetable oils, animal fats, triglycerides, fatty acids, fatty acid methyl esters, fatty acid ethyl esters, and glycerin. The liquid hydrocarbon is applied on the coking coal to adjust the coal's bulk density. BACKGROUND OF THE INVENTION [0003] Metallurgical coke is prepared by heating coal in an oxygen-free atmosphere until all the volatile components in the coal evaporate. Metallurgical coal is mainly used in the iron...

Claims

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Application Information

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IPC IPC(8): C10L1/32
CPCC10L9/12Y02E50/30Y02E50/10
Inventor TRAN, BO L.
Owner ECOLAB USA INC
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