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Combustible nano-composite pour point depressant and preparation method thereof

A nano-composite and pour point depressant technology, which is applied in the direction of fuel additives, fuels, liquid carbon-containing fuels, etc., can solve the problems that nanoparticles are not flammable, affect the service life and effect of the engine, and improve low-temperature fluidity, low-temperature The effect of fluidity improvement and strong sensitivity

Active Publication Date: 2017-07-14
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the nanocomposite pour point depressants used to improve the low temperature fluidity of diesel mainly include nanoclay / polymer pour point depressants and silica / polymer pour point depressants. Significant effect, but there are also obvious disadvantages, that is, the nanoparticles used are not flammable. When they are used in diesel engines for a long time, these non-flammable nanoparticles will continue to deposit at the bottom of the engine, which will eventually affect the service life of the engine. and effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A flammable nanocomposite pour point depressant prepared by a method comprising the following steps:

[0025] (1) Prepare water-soluble graphene oxide by oxidation of graphite first, then add graphene oxide into water at a concentration of 1 mg / ml, and ultrasonically oscillate to make it evenly distributed in the water at normal temperature and pressure Graphene oxide aqueous solution is formed in water;

[0026] (2) Weigh 4g of sodium dithionite and 16g of sodium hydroxide and dissolve them in 200ml of deionized water, stir for 1 hour at a rate of 25r / min, and form a reducing agent solution;

[0027] (3) Under the conditions that the stirring rate is 200r / min and the temperature of the water bath is 100°C, the reducing agent solution prepared in step (2) is added to the graphene oxide aqueous solution, and the stirring reaction is continued for 10h and then filtered, followed by ethanol and After rinsing with deionized water for 5 times, the filtered product was dried...

Embodiment 2

[0032] A flammable nanocomposite pour point depressant prepared by a method comprising the following steps:

[0033] (1) Firstly, graphite is oxidized to prepare water-soluble graphene oxide, and then graphene oxide is added to water at a concentration of 5 mg / ml, and ultrasonically oscillated at normal temperature and pressure to evenly distribute Graphene oxide aqueous solution is formed in water;

[0034] (2) Dissolve 1.8g of sodium dithionite and 5.4g of sodium hydroxide in 72ml of deionized water, stir for 1 hour at a speed of 45r / min, and form a reducing agent solution;

[0035] (3) Under the conditions that the stirring rate is 150r / min and the water bath temperature is 95°C, add the reducing agent solution prepared in step (2) into the graphene oxide aqueous solution, continue to stir and react for 8h and then filter, then use ethanol and After rinsing with deionized water for 5 times, the filtered product was dried at 60°C for 8 hours and then ground to obtain a unif...

Embodiment 3

[0040] A flammable nanocomposite pour point depressant prepared by a method comprising the following steps:

[0041] (1) Firstly, graphite is oxidized to prepare water-soluble graphene oxide, and then graphene oxide is added to water at a concentration of 3 mg / ml, and ultrasonically oscillated at normal temperature and pressure to evenly distribute Graphene oxide aqueous solution is formed in water;

[0042] (2) Weigh 0.4g of sodium dithionite and 0.8g of sodium hydroxide and dissolve them in 12ml of deionized water, stir for 1 hour at a speed of 40r / min, and form a reducing agent solution;

[0043] (3) Under the conditions that the stirring rate is 100r / min and the temperature of the water bath is 80°C, the reducing agent solution prepared in step (2) is added to the graphene oxide aqueous solution, and the stirring reaction is continued for 5h before filtering, and the mixture is successively washed with ethanol and After rinsing with deionized water for 3 times, the filter...

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Abstract

The invention discloses a combustible nano-composite pour point depressant and a preparation method thereof. The combustible nano-composite pour point depressant is a blend of nano-graphene and a polymer pour point depressant, wherein the polymer pour point depressant is any one or two of a polymethacrylate pour point depressant or a polyethylene-vinyl acetate pour point depressant. The combustible nano-composite pour point depressant is prepared from nano-graphene and the polymer pour point depressant by virtue of a solvent blend method; and the preparation method is easy and feasible. Compared with a common nano-composite pour point depressant, the combustible nano-composite pour point depressant has the major advantages that the pour point depressant is combustible and lossless, does not pollute a diesel engine, does not settle at the bottom of the diesel engine and has stable performance and an excellent effect. By applying the combustible nano-composite pour point depressant to 0# diesel, a cold filter plugging point and condensation point of the 0# diesel can be respectively decreased by 11-16 DEG C and 18-25 DEG C.

Description

technical field [0001] The invention specifically relates to a flammable nanocomposite pour point depressant and a preparation method thereof, belonging to the technical field of biomass energy additives. Background technique [0002] Ordinary 0# diesel oil is a mixture containing multi-component complex hydrocarbons, which contains more normal alkanes. When the outside temperature continues to drop, the paraffin molecules in the diesel oil begin to crystallize and continue to precipitate and aggregate. Due to the large number of paraffin crystals Agglomerated, eventually forming a three-dimensional network structure, when it is applied to a diesel engine, it will block the engine oil pipeline and filter, resulting in the engine not working properly. [0003] In recent years, with the development of nanotechnology, polymer / inorganic nanocomposites and inorganic nanohybrid materials have become the research hotspots of scholars at home and abroad. By introducing inorganic na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/10C10L1/12C10L1/198C10L10/14
CPCC10L1/106C10L1/1208C10L1/1983C10L10/14
Inventor 韩生赵志成周嘉伟薛原颜松许广文陈达明连俊刘平廉翔陈红艳蔺华林韩治亚余焓卢德力蒋继波邱丰于飞李原婷祝俊
Owner SHANGHAI INST OF TECH
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