JPS61168695A - Fuel composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to stabilized distillate fuels. W
IC, this invention relates to fuel oils, such as diesel engine fuels and heating fuels, which are susceptible to modification during normal transportation and storage. Generally, this alteration results in the formation of Sa-free sludge and precipitates, discoloration, and unpleasant odors, especially at high temperatures. The quality deterioration of fuel oil is caused by the enrichment and decomposition of hydrocarbons.

Traditionally, stabilizers for distillate fuels have been amines. US patent @
No. 5,490,882 shows the use of N,N-dimethylcyclopequinylamine as a stability rule in distillate fuels. U.S. Pat. No. 5,504,162 discloses a method for reducing the quality of petroleum distillate fuel oils by adding enough linoleic acid diamine to stabilize the fuel oil. A mixture consisting of small amounts of a mixture of amides is claimed.

With the increasing use of poor quality crude oil, the need for additives for fuel stabilization is expected to increase significantly over the next few years.

According to the present invention, an alkyldimethylamine in the C4-C2o alkyl range is added to distillate fuel 1/Ctm as a stabilizer to prevent deterioration of fuel oil quality.

The present invention relates to petroleum distillate fuels containing chemical additives that exhibit an unexpectedly exceptional ability to prevent color, sludge formation, filter clogging, emulsification, reservoir corrosion, etc. It is something.

In particular, this invention provides a fuel oil composition comprising a petroleum distillate fuel oil and a small amount of an alkyldimethylamine which is a mixture of chemical structures sufficient to stabilize the fuel oil against degradation. This alkyldimethylamine is 0.001 weight t
Ik% is present in this mixture in the range of 0.2°C
There is.

Further, in embodiments of this invention, R is C8''C14 alkyl or mixtures thereof. In more preferred embodiments of this invention, R is C8 alkyl.

The stabilizer of this invention is basically 200° to 900F (900° to 900°F).
It is effective for petroleum distillate fuels, which are mixtures of hydrocarbons that emit at temperatures ranging from 5.55°C to 482.2°C.

This invention is suitable for use in diesel fuel for ships, automobiles, and locomotives, military diesel fuel, non-highway diesel fuel, highway diesel fuel, Couette enzone fuel, turbine engine fuel, and diesel fuel for electrical equipment. It is concerned with stabilizing products such as fuel oil.

Additionally, stabilizers are used in heating oils for residential and commercial buildings, such as furnace oils.

In addition to heating oil, there are heating oils for refining and heating oils for electrical equipment.

The preferred petroleum distillate fuel oils used in this invention are heating oils and diesel oils.

The R group ranges from C4-ago alkyl or mixtures thereof. Preferably R is 08-C14 alkyl or a mixture thereof. More preferably R is CB alkyl.

Alkyldimethylamines are well known in the art. Alkyldimethylamines are available from Ethyl Corporation and have a wide variety of known uses. Examples of such amines include dimethylbutylamine, trimethylpentylamine, dimethylhexylamine, dimethylhezotylamine, dimethyloctylamine, dimethylnonylamine, dimethyldecylamine, dimethylandecylamine-zomethyldodecylamine. , tumethylto1
7 Decylamine, dimethyleicosylamine, dimethylpentadecylamine, dimethyltedecylamine,
Dimethylhebutadecylamine-dimethyloctadecylamine, dimethylnonadecylamine, and dimethyleicosylamine.

When using alkyldimethylamine as a distillate fuel,
It is now known to be an economically attractive stabilizer. Fuel oil alteration is prolonged, discoloration is inhibited, and sludge formation is reduced. Alkyldimethylamines inhibit the reactions that cause sludge formation.

Alkyldimethylamines also have no ash or extractability - despite their dispersant action, when fuels containing them are mixed with water, they are similar to additives that cause emulsions. .

The preferred alkyl tmethylamines may vary depending on the type of petroleum distillate fuel mixture selected. The following table is 7
A comparison is made between the deterioration of a fuel containing no stabilizer and the deterioration observed after treatment with dimethyldodecylamine. Dimethyldodecylamine inhibited the formation of precipitates and discoloration at 149°C for each selected fuel temperature. A busy test was conducted to compare the effectiveness of dimethyldodecylamine at 149°C for A8TM. It was tested in an accelerated storage test for 90 minutes. Each distillate fuel was weighed at 149
℃ and exposed to air for 90 minutes in an open tube. After aging and cooling, the fuel was filtered and the amount of insoluble residue formed was estimated by measuring the amount of light reflectance of the filter pad. Original reflectance is 0-2
ranged from 0 to 0. If the filter parameter rating is high, the amount of waste residue formed is large.

The results of the 149° C., 90 minute accelerated storage test of AsTM are also superior as assessed by a comparison of tengle color of treated and untreated distillate fuels.

A low f-number, such as 0, represented white, and a maximum f-number, such as 8, represented black.

In each selected fuel sandal, both filter pad pulp and color showed greater distillate fuel stability with dimethyldodecylamine weighting.

Claims (9)

[Claims] (1) Petroleum distillate fuel oil selected from heating furnace oil and diesel oil and chemical structure ▲ Numerical formulas, chemical formulas, tables, etc. are available ▼
and R is a linear C_4-C_2_0 alkyl or a mixture thereof, the fuel oil composition comprising a small amount of alkyldimethylamine sufficient to stabilize the fuel oil against degradation. (2) The fuel oil composition according to claim 1, wherein R is linear C_8-C_1_4 alkyl or a mixture thereof. (3) Claim 2 in which R is C_8 alkyl
The fuel oil composition described in . (4) The fuel oil composition according to claim 1, wherein the distillate fuel oil is a heating oil. (5) The heating oil composition according to claim 4, wherein R is C_8-C_1_4 alkyl or a mixture thereof. (6) Claim 5 in which R is C_8 alkyl
The heating oil composition described in . (7) The fuel oil composition according to claim 1, wherein the distillate fuel oil is diesel oil. (8) The diesel oil composition according to claim 7, wherein R is C_8-C_1_4 alkyl or a mixture thereof. (9) Claim 8 in which R is C_8 alkyl
Diesel oil composition as described in .