Unlock instant, AI-driven research and patent intelligence for your innovation.

Alkyl ethanolamine and biocide combination for hydrocarbon based fuels

a hydrocarbon fuel and biocide technology, applied in the field of hydrocarbon fuel additives, can solve the problems of fuel degradation, unsatisfactory biological activity, sludge formation, etc., and achieve the effect of reducing the amount of biocide needed, and inhibiting microbiological activity

Inactive Publication Date: 2006-01-12
TAMINCO NV
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] The present invention relates to a treatment for water-hydrocarbon based fuel system, which provides in part, biocidal control. More particularly, the present invention relates to the addition of a combination of a biocide and at least one alkyl ethanolamine to a water-hydrocarbon based fuel system to inhibit microbiological activity. In hydrocarbon based fuel systems, contact with water either intentionally or through contamination can result in undesirable biological activity. The microbiological activity can result in degradation of the fuel, sludge formation, undesirable odor generation, etc. The use of biocidal agents in such systems is known. The present inventors have discovered that the addition of a combination of a biocidal agent and at least one alkyl ethanolamine to such systems results in unexpected increased biocidal activity. The combination of the present invention can allow a reduction in the amount of biocide necessary to achieve a given level of control. The alkyl ethanolamine, in addition to enhancing the activity of the biocide, also can provide pH control for the system. Such pH control can reduce possible corrosion problems. The favorable impact of the amine is particularly important in the plant-derived fuels known generically as biodiesel.

Problems solved by technology

In hydrocarbon based fuel systems, contact with water either intentionally or through contamination can result in undesirable biological activity.
The microbiological activity can result in degradation of the fuel, sludge formation, undesirable odor generation, etc.

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] A 324 well microtiter plate was employed to evaluate the growth of a microorganism common to water-hydrocarbon based fuel systems, Pseudomonas Aeruginosa (ATCC27853) in with a variety of amines at varying concentrations. The testing employed Trypticase Soy Broth (TSB) as a growth medium and 25 m molar tris (trihydroxymethylmethylamine) as a buffer. The test duration was 24 hours at pH 8.5.

[0021] The amines tested were alkyl ethanolamines: butyldiethanolamine (BDEA), butylaminoethanol (BAE), tert-butylaminoethanol (TBAE) and diisopropylaminoethanol (DIPAE). Alkyl alkanolamines, 2-methyl-2-amino-1-propanol (AMP),) and diglycolamine (DGA) were also tested. The biocide was GROTAN® available from Troy Chemicals of New Jersey. Table I summarizes the test results. The entries in Table 1 are averages of at least four replicate runs for each test.

TABLE 1GROTANGROTANGROTANGROTANGROTANGROTAN0 ppm100 ppm250 ppm500 ppm1000 ppm2000 ppmBacteria / 0.971.191.210.880.360.39mediaPlus2000400020...

example 2

[0023] A culture of mixed enteric bacteria (klebsiella pneumoniae, Proteus vulgarus, Citrobacter sp., Escherichia coli) at pH=9.0 in TSB (trypticase soy broth) media mixed with emulsified oil was prepared. A biocide, GROTAN® {78.5% 1,3,5-(2-hydroxyethyl)-s-triazine solution in water} as sold by Troy Chemicals (Florham Park, N.J.) was added at varying concentrations to the culture in combination with 2500 ppm of one of the four alkanolamines, N-butylaminoethanol (BAE), diethanolamine (DEA), diglycolamine (DGA) or 2-amino-2-methyl-1-propanol (AMP). Optical density measurements were taken every 15 minutes over a 24 hour time period (total of 96 data points). The maximum growth slope was calculated by taking the 10 contiguous data points that result in the highest growth slope (units of OD per time) over the 24 hour period. Those 10 data points were subjected to a least squares linear fit to calculate the maximum growth slope. Table 2 summarizes the maximum growth slopes for these tests...

example 3

[0025] A culture of Pseudomonas aeruginosa (ATCC 10145) at pH=8.5 in TSB (trypticase soy broth) media was prepared. The biocide Proxel DB20 (20% suspension of benzoisothiazolone (BIT) in water), as sold by Avecia, was added at varying concentrations in combination with 1000 ppm or 2000 ppm of the alkanolamines N-butylaminoethanol (BAE), 2-amino-2-methyl-1-propanol (AMP), dibutylaminoethanol (DBAE) or n-octylaminoethanol (OAE). Optical density measurements were taken every 15 minutes over a 24 hour time period (total of 96 data points). The maximum growth slope was calculated by taking the 10 contiguous data points that result in the highest growth slope (units of OD per time) over a 24 hour period. Those 10 data points were subjected to a least squares linear fit to calculate the maximum growth slope. Table 3 summarizes the maximum growth slopes for these tests.

TABLE 3AMPBAEDBAEOAE10002000100020001000200010002000BITppmppmppmppmppmppmppmppm0ppm0.4780.290.3330.0000.2280.1140.0000.00...

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

PropertyMeasurementUnit
ODaaaaaaaaaa
pHaaaaaaaaaa
concentrationaaaaaaaaaa
Login to View More

Abstract

A microorganism control combination for liquid hydrocarbon systems containing water is disclosed. The combination is a biocidal control agent and an alkylamine ethoxylate of the formula RXN(CH2CH2OH)Y wherein R is C3 to C18 alkyl or isoalkyl group, X and Y are 1 or 2, Z is 0 or 1, X+Y is not greater than 3, when X or Y is 2 than Z is 0 and when X is 2 the R groups are the same or different C3 to C18 alkyl or isoalkyl groups. The combination provides effective microorganism control with reduced concentration of biocidal control agent.

Description

[0001] This application is a continuation in part of U.S. application Ser. No. 10 / 886,866 filed Jul. 8, 2004.FIELD OF THE INVENTION [0002] The present invention relates to additives for systems of hydrocarbon fuels containing water. More particularly, the present invention relates to biocidal treatments for water-hydrocarbon based fuel emulsions and hydrocarbon based fuels, such as diesel or biodiesel systems containing water. The treatment comprises at least one biocidal alkyl ethanolamine agent or a combination of a biocidal agent and at least one alkyl ethanolamine. BACKGROUND OF THE INVENTION [0003] The performance of hydrocarbon based fuels such as diesel fuels, gasoline and kerosene can be favorably modified by the addition of performance enhancing additives such as water (emulsified fuel), emulsifiers, biocides, pH modifiers, detergents, etc. Two areas of current commercial interest are the formulation of emulsified diesel fuel and the use of plant derived diesel fuel alterna...

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
Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/32
CPCC10L1/125C10L1/14C10L1/328C10L1/2456C10L1/2225
Inventor GERNON, MICHAEL DAVIDDOWLING, CONOR MICHAEL
Owner TAMINCO NV