Methods and compositions for dust control and freeze conditioning
a technology of dust control and freeze conditioning, applied in the direction of other chemical processes, roads, ways, etc., can solve the problems of significant health, environmental and safety problems, adversely affecting human health and the environment, and operations may be significantly restricted, so as to prevent the generation of dust
Inactive Publication Date: 2013-03-07
NALCO CO
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AI Technical Summary
Benefits of technology
The patent text describes a method for preventing dust from particulate materials, such as dirt roads, by applying a composition made from a manufacturing process using vegetable oil, plant oil, or animal fats. This composition wets the surface of the material and reduces the generation of dust. The technical effect is the prevention of dust and the improvement of air quality.
Problems solved by technology
Dust from traffic on dirt roads and from the handling of particulate products can create significant health, environmental and safety problems.
At mining facilities, industrial sites and construction sites, operations may be significantly restricted by dust cloud formation.
In addition, dust can adversely affect human health and the environment.
These products can freeze in sub-freezing weather.
Dust problems can persist even in subfreezing temperatures.
The moisture on the surface of the coal and in the coal, when frozen, causes the chunks of coal to agglomerate into large, unwieldy lumps, creating a handling problem.
The coal can also freeze to the walls of hopper cars and railroad cars that are used to transport the coal, which further causes a material handling problem.
Method used
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Effect test
example 1
[0056]The bottom stream was obtained from a biodiesel synthesis process. In this embodiment, the bottom stream component comprises about 17 weight percent of glycerin, with the balance containing mainly carbohydrates, methyl esters, and salt. The product was diluted with 100 weight percent of water to provide a 50% solution of the bottom stream. The composition was applied to a dusty road at a dosage of one quart per square yard.
[0057]The diluted, bottom stream was highly effective in reducing dust generation from passing vehicles. Generation of road dust was further prevented for two weeks before a maintenance application was needed. Current industry practice is to use water or salt to control road dust. These applications are effective but they last only from an hour up to several days before another application is required. Treatment according to this invention can last weeks.
[0058]While this invention may be embodied in many different forms, there described in detail...
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Dust control and / or freeze conditioning compositions and methods of using the compositions are provided. In an embodiment, the present invention provides methods of utilizing the dust control and / or freeze conditioning products. For example, the method can comprise preventing the agglomeration of particulate material comprising coal and the adhesion thereof to surfaces in subfreezing weather. The method can also comprise preventing dust formation from particulate material handling processes. The dust control and / or freeze conditioning compositions can comprise a bottom stream derived from a biodiesel manufacturing process. The dust control and / or freeze conditioning compositions can also comprise a bottom stream of transesterification reactions involving triglycerides.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This is a Divisional Application of co-pending U.S. patent application Ser. No. 12 / 356,352 filed on Jan. 20, 2009, it is also a Continuation-in-part application claiming priority from application Ser. No. 11 / 857,093 filed on Sep. 18, 2007 which in turn was a Continuation-in-part application claiming priority from application Ser. No. 11 / 561,150 filed on Nov. 17, 2006 now abandoned, which itself was a Continuation-in-part application claiming priority from application Ser. No. 11 / 490,193 filed Jul. 20, 2006 which issued as U.S. Pat. No. 7,398,935 on Jul. 15, 2008 and application Ser. No. 10 / 846,218, filed May 14, 2004 which issued as U.S. Pat. No. 7,108,800 on Sep. 19, 2006.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not Applicable.BACKGROUND OF THE INVENTION[0003]This invention relates to dust control and freeze conditioning. More particularly, this invention concerns dust control and freeze conditioning compositi...
Claims
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IPC IPC(8): E01C21/00
CPCC09K3/18C09K3/22C10L9/12Y02E50/10
Inventor TRAN, BO L.BLUBAUGH, STEPHEN J.
Owner NALCO CO