Combination of additives for fuel
a technology of additives and fuel, applied in the direction of fuel additives, liquid carbonaceous fuels, petroleum industry, etc., can solve the problems of engine performance, negative impact on consumption and particle emissions, and more complex geometries, so as to prevent and/or reduce the formation of deposits, the effect of preventing and/or reducing the formation of deposits
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
Method used
Image
Examples
example 1
of Copolymers
[0506]Copolymers in accordance with the present invention were synthesized in accordance with the protocols described below.
1.1 Synthesis of a 2-ethylhexyl methacrylate / 2-(dimethylamino)ethyl Methacrylate Diblock Copolymer (b) (EHMA / DMAEMA Block Copolymer) by RAFT Radical Polymerization
[0507]EHMA Block A:
[0508]30.01 g (0.26 mol) of 2-ethylhexyl methacrylate (EHMA), 2.89 g (13 mmol) of 2-cyano-2-propyl benzodithioate and 35 mL of toluene are introduced into a 250 mL round-bottomed flask. 210 mg (1.29 mmol) of azobisisobutyronitrile (AIBN) are weighed out in a 20 mL round-bottomed flask and then dissolved in 4 mL of toluene. The two solutions are degassed with nitrogen for 30 minutes. The solution containing the EHMA monomer is heated to 80° C. When the temperature is reached, the AIBN solution is added using a syringe purged beforehand with nitrogen. The reaction medium is stirred for 24 hours at 80° C. under an inert atmosphere (N2).
[0509]A 250 μL sample is collected at...
example 2
y Tests
[0530]The performance qualities in terms of detergency were evaluated using the XUD9 engine test, which consists in determining the loss of flow rate defined as corresponding to the restriction of the flow of a gas oil emitted by the injector of a prechamber diesel engine during its functioning, according to the standardized engine test method CEC F-23-1-01. The object of this XUD9 test is to evaluate the ability of the additive and / or of the additive composition tested to maintain the cleanliness, “keep-clean” effect, of the injectors of a four-cylinder Peugeot XUD9 A / L prechamber injection diesel engine, in particular to evaluate its ability to limit the formation of deposits on the injectors.
[0531]The test was performed on a virgin gas oil of BO type corresponding to the standard EN590, supplemented with the polymers described in Example 1 above, to a degree of total additive treatment of 50 ppm by weight (50 mg / kg).
[0532]The test is started with a four-cylinder Peugeot XU...
example 3
ing Tests
[0535]The demulsifying properties are determined according to the standard ASTM D 1094.
[0536]The protocol is as follows: 20 mL of an aqueous buffer solution and 80 mL of fuel to be tested are poured into a 100 mL graduated measuring cylinder. The graduated measuring cylinder is then stirred for 2 minutes before being placed on a flat surface. The volume of the aqueous phase, located in the lower part of the measuring cylinder, is then determined after 5, 9, 14 and 30 minutes simply by reading the volume indicated on the graduated measuring cylinder. The result of the test in accordance with the standard ASTM D 1094 corresponds to the volume of water recovered after 5 minutes.
[0537]The results obtained are detailed in the table below. The tests were performed on a virgin gas oil of B7 type corresponding to the standard EN590, supplemented with 20 ppm (20 mg / kg) of the EHMA / DMAEMA block copolymer (b) and 30 ppm (30 mg / kg) of the EHMA / DMAEMAquat block copolymer (a) described i...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More