FR2476673A1 - SOLID PRODUCT INCORPORATING FUEL ADDITIVES - Google Patents

Abstract

THE OBJECT OF THE INVENTION IS A SOLID PRODUCT INCORPORATING FUEL ADDITIVES. PRODUCTS BASED ON FUEL ADDITIVES USED IN INTERNAL COMBUSTION ENGINES, CHARACTERIZED IN THAT THE ADDITIVES, KNOWN AS SUCH, ARE OPPORTUNITY DOSED ON A SOLID SUBSTRATE UNDER AMBIENT CONDITIONS, THE PRODUCT IS SOLUBLE IN LIQUID HYDROCARBONS, THE SUPPORT BEING CONSTITUTED BY A HYDROCARBON.

Description

The present invention relates to a solid product

  incorporating fuel additives, this product being

  It can be dissolved in a fuel directly by the user. Many fuel additives are already known, whether they be used in Otto cycle engines or

diesel cycle.

  These additives are required to fulfill several functions

  some of which may be mentioned as non-limited examples

  tative: increase the octane number for the species, or

  tane for diesel fuels; inhibit corrosion and confer

  to have a detergent power; inhibit oxidation and the formation of gums and lacquers; reduce smoke (in diesel cycle engines). Additives are often able to perform several functions such as those mentioned above and

more besides.

  For their end use, the additives must be soluble in the hydrocarbons used in internal combustion engines, and they are in the liquid phase in the

  ambient conditions. Because they have to be added to the fuel

  in relatively small doses, the additives are usually

  in the diluted state in solvents and / or mineral or synthetic oils, their

form being made easier.

  However, this dosage presents some difficulties to the direct consumer. For example, a motorist (the

  typical consumer) wishing to put in the tank of his vehicle

  a variable quantity of liquid additive depending on the quantity of fuel existing in the tank, can easily be wrong, by default or by excess, as to the dose to be added,

  when pouring into the tank the contents of a box of addi-

  or when using a measure for that purpose. The refiners

  The deposits and deposits use the additives in a more concentrated form to make it easier to perform the correct dosage. However, price reasons often lead to the delivery of fuels without additives or with a minimum dose of additives. In these circumstances, it is obvious that the marketing of fuel additives, allowing the use of

  directly by the consumer, in an easy and

  without loss or need for dosing - 1 - -2-

  complicated, is an urgent requirement.

  In order to meet this requirement, the present invention proposes additives dosed in a solid form, preferably in the form of pellets, each pellet corresponding to the dose required for a determined number of liters of fuel,

  for example, for 10 liters of fuel.

  Thus, the user only has to enter the reservation

  see, as many pellets as there are tens of liters of fuel. To achieve this object, the present invention provides a product comprising additives, characterized in that said additives are metered in the solid product and are absorbed on a solid support under ambient conditions and soluble in liquid hydrocarbons, this support consisting of an acyclic, alicyclic or aromatic hydrocarbon of formula

  the minimum number of carbon atoms is 17 for acyl-

  clicks, 12 for alicyclics and 10 for aromatics.

  Advantageously, according to the invention, it is used

as a carrier for mothballs.

  In order to produce the solid complex according to the invention, it is possible to proceed in various ways, the following of which are cited

  preferably, but not exclusively.

  One can, according to a first method, proceed hot.

  In this case, the support is melted; the additives are dissolved in the support in the molten state; from the fluid mixture thus obtained, it is produced, by cooling, pellets containing

  additives in the desired doses.

  According to a second method, it can proceed cold. The support having been milled to the desired particle size, the additives are absorbed under continuous stirring; from the mass thus obtained, pellets are formed according to pressure

the desired dosage.

  The following examples will help to better understand the invention. Example 1 - A multifunctional additive for gasolines is prepared by the hot process. In a stainless steel container

  2000 liters of capacity, 838 kilograms of naphtha-

  technically pure line. After heating, the mass is

  due to 82 degrees centigrade, keeping it under agitation. 159.5 kilograms of a polyvalent additive known

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  trade under the brand "Lubrizol 8101", produced by The Lubrizol

  Corporation, U.S.A .; it is mixed continuously during the addition.

  After cooling the mass to 20 degrees centigrade, 142500 pellets are obtained by known means, each of which contains 5.88 grams of support and 1.12 grams of additive, these pellets being able to be used in the proportion

  one pellet per 10 liters of gasoline.

  Example 2 - A multifunctional additive for gasoline is prepared by the cold process. In a ball mill, 1,000 kilograms of technically pure naphthalene are milled, and the milled mill is passed through a screen of 800 mesh per square centimeter. We obtain 986 kilograms of crushed product. This milled product is introduced into a stainless steel container and, while keeping the contents of the vessel under stirring, 134 kilograms of an additive known under the trade name A-577 from Amoco International S.A., Switzerland are added. After 20 minutes, the additive being completely absorbed in the mass, it forms in a machine to manufacture pellets, about 160000 pellets each of which has a support content of 6.16 grams and additive of 0.84 grams, these pellets can be used in the

  proportion of one pellet for 15 liters of gasoline.

  Example 3 - A multifunctional additive for gas oil is prepared by the cold process. In a ball mill, we grind 812

  kilograms of technically pure naphthalene passed through

  following through a screen of 800 meshes per square centimeter. The milled product, 800 kilograms, thus obtained, is introduced into a

  stainless steel container into which you pour, while

  keeping the contents under stirring, 200 kilograms of a mixture of additives known under the trade name MPA-D and D112, produced by Ethyl Corporation, U.S.A., the ratio MPA-D / D11Z being variable in the following proportions 55 percent to

  percent, and 45 percent to 65 percent, respectively.

  After 25 minutes, the additive is completely absorbed in the mass and, on a tablet making machine, is formed from this mass, about 80000 pellets each containing grams of support and 2.5 grams of additives according to the selected report. These pellets can be used in the proportion

  one pellet every 5 liters of gas oil.

  This has resulted in solid pellets that can be

  used directly by the consumer.

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  The product has the following features and benefits: - It is easy to use by the consumer-direct. Each pellet constitutes a dose for a given number of liters of fuel, the addition requiring no measurement. - it is easy to store. There is no danger during the

product preservation.

  its particular composition (specific weight greater than that of commercial fuels) enables the pellet to descend to the bottom of the tank, according to a gradual dissolution process in time, and makes it possible to obtain at the bottom of the tank, where the fuel is removed, a higher concentration of active substances capable of exerting a chemical action

  vigorous in relation to the characteristics of those substances

  these. In relation to the product used, the following effects are obtained:) on an Otto cycle engine: - cleanliness of the fuel (detergent effect); - improvement in the cleanliness of the entire engine,

  The particular P.V.C. valve (dispersancy power); - reduction

  the formation of ice in the fuel; - reduction of deposits on the intake valves; - rust protection and

  anticorrosion of the tank and the fuel-inlet pipe; -

  emission reduction of pollutants such as

bone and hydrocarbons im burned.

  ) on a diesel cycle engine: - increase in the cetane number; smoke reduction; - detergency of the injectors; - anticorrosive and rustproofing effects in the tank and on

  all the fuel arrival circuit; - extension of the inter-

  valle between the controls of the injection system; - improvement of engine performance; - easy start up even for

cold start.

  The products in the form of pellets, can be delivered in a heat-sealed envelope which ensures stability over time and easy handling, the envelopes being enclosed in

  boxes or other appropriate type of packaging.

  The invention is in no way limited to that of these modes of application, nor to those of the embodiments of these various parts which have more especially been indicated; she

  on the contrary, embraces all variants.

Claims (2)

R E V E N D I C A T I 0 N S   -1- Product based on fuel additives used in internal combustion engines, characterized in that the additives, known per se, are conveniently dosed on a solid support under ambient conditions, the product being soluble in liquid hydrocarbons , the support being constituted by a hydrocarbon; -   Product according to claim 1, characterized in that   said hydrocarbon is selected from acyclic hydrocarbons   those of formula where the minimum number of carbon atoms is 17 (seventeen); Product according to claim 1, characterized in that   said hydrocarbon is selected from alicyclic hydrocarbons   cliques of formula o the minimum number of carbon atoms is 12 (twelve); Product according to claim 1, characterized in that   said hydrocarbon is selected from aromatic hydrocarbons   ticks of formula where the minimum number of carbon atoms is 10 (ten); Product according to Claim 4, characterized in that the support consists of naphthalene;   Product according to any one of the claims.1,   2, 3, 4 and 5, characterized in that it is in the form of pellets;   Product according to claims 1, 2, 3, 4, 5 and 6,   characterized in that it consists of additives for fuels, these additives known per se, being absorbed on a support, and then in the form of pellets; -8- Product according to claim 7, characterized in that it is carried out hot by melting the support, then dissolves the additives in the molten state; from the fluid mixture thus obtained, it is produced by cooling, pellets -6- 2476673   containing the additives in the desired doses; -9- Product according to claim 7, characterized in that one proceeds cold; the support having been milled to the desired particle size, the additives are absorbed under continuous stirring; from the mass obtained, one forms by   pressure, pellets according to the desired dosage.