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CN-122012148-A - Quick diesel oil emulsifier and preparation method of emulsified diesel oil

CN122012148ACN 122012148 ACN122012148 ACN 122012148ACN-122012148-A

Abstract

The invention discloses a diesel rapid emulsifier and a preparation method of emulsified diesel, which comprise the following components of a surfactant, a co-emulsifier, a stabilizer, a functional modifier and the balance of a solvent, wherein the mass ratio of the surfactant to the co-emulsifier is 2-5:1, the mass ratio of the stabilizer to the functional modifier is 1-3:1, and the solvent is one or a combination of more of deionized water, methanol, ethanol or isopropanol. Compared with the prior art, the invention has the advantages of providing the diesel rapid emulsifying agent which is convenient and rapid to emulsify and is stable for long term storage, obviously improves the combustion performance and reduces the emission, and the preparation method of the emulsified diesel.

Inventors

  • SUN YIBO
  • WANG XIAOCHUN
  • SUN KEWEN

Assignees

  • 南阳市智贤新能源有限公司

Dates

Publication Date
20260512
Application Date
20260302

Claims (10)

  1. 1. The diesel quick emulsifier is characterized by comprising the following components of a surfactant, a co-emulsifier, a stabilizer, a functional modifier and the balance of a solvent; Wherein the mass ratio of the surfactant to the auxiliary emulsifier is 2-5:1; The mass ratio of the stabilizer to the functional modifier is 1-3:1; The solvent is one or more of deionized water, methanol, ethanol or isopropanol.
  2. 2. A diesel fast emulsifier according to claim 1, wherein the surfactant comprises at least one of a nonionic surfactant, an anionic surfactant or a zwitterionic surfactant.
  3. 3. The rapid diesel emulsifier according to claim 2, wherein the nonionic surfactant is at least one selected from sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, alkylphenol ethoxylates and fatty alcohol ethoxylates.
  4. 4. A diesel fast emulsifier according to claim 1, wherein the co-emulsifier comprises at least one of a monohydric alcohol, a dihydric alcohol or a polyhydric alcohol.
  5. 5. The rapid diesel emulsifier according to claim 4, wherein the co-emulsifier is at least one of n-propanol, n-butanol, isoamyl alcohol, ethylene glycol or glycerol.
  6. 6. The rapid diesel oil emulsifier according to claim 1, wherein the stabilizer comprises at least one of inorganic salts, water-soluble high molecular polymers or nano inorganic particles.
  7. 7. The rapid diesel emulsifier of claim 6 wherein the inorganic salts comprise sodium chloride, magnesium chloride, calcium nitrate or magnesium sulfate; the water-soluble high molecular polymer comprises polyvinyl alcohol, sodium carboxymethyl cellulose or polyacrylamide.
  8. 8. The rapid diesel oil emulsifier according to claim 1, wherein the functional modifier comprises nano silica and an antioxidant.
  9. 9. A method for preparing emulsified diesel fuel based on the diesel fast emulsifier as claimed in any one of claims 1 to 8, characterized by comprising the steps of: S1, oil phase pretreatment, namely heating diesel oil, and adding a diesel oil rapid emulsifier according to 3% -8% of the total mass of the diesel oil; s2, water phase treatment, namely heating deionized water, wherein the addition amount is 10% -25% of the mass of diesel oil; s3, shearing and emulsifying, namely starting a high-speed shearing and emulsifying machine, and mixing the modified oil phase of the S1 and deionized water obtained in the S2 into a shearing cavity; S4, maintaining the rotating speed of 3000-6000 r/min, and continuing to shear and emulsify for 10-20 minutes until the system forms micro-emulsion with uniform particle size and semitransparent or milky appearance; s5, standing and curing at normal temperature to obtain the emulsified diesel oil.
  10. 10. The method for preparing emulsified diesel oil by using the rapid diesel oil emulsifier according to claim 9, wherein deionized water in the step S3 is slowly dripped into the modified oil phase at a constant flow rate for 8-15 minutes.

Description

Quick diesel oil emulsifier and preparation method of emulsified diesel oil Technical Field The invention relates to the technical field of fuel chemistry, in particular to a diesel rapid emulsifier and a preparation method of emulsified diesel. Background Diesel oil is used as important power fuel and is widely applied to the fields of transportation, engineering machinery, generator sets and the like. However, the conventional diesel oil has problems of large emission of nitrogen oxides and particulate matters, insufficient combustion and the like. The diesel oil emulsifying technology is to uniformly disperse water in the form of tiny liquid drops in diesel oil to form 'water-in-oil' type microemulsion, and promote secondary atomization by utilizing 'micro-explosion effect', so that combustion efficiency is improved, and pollutant emission is reduced. The existing diesel oil emulsification technology is easy to generate layering and demulsification in the storage process, is greatly influenced by temperature change or long-term standing, limits the commercial application of the diesel oil emulsification technology, only plays a role in emulsification, lacks modification of oxidation resistance, lubricity or combustion catalysis function of diesel oil, and cannot comprehensively improve the quality of fuel oil. Disclosure of Invention The invention aims to overcome the technical defects and provide the diesel rapid emulsifying agent which is convenient and rapid to emulsify and stably store for a long time, and can remarkably improve the combustion performance and reduce the emission, and the preparation method of the emulsified diesel. In order to solve the technical problems, the invention provides a diesel quick emulsifier which comprises the following components of surfactant, auxiliary emulsifier, stabilizer, functional modifier and the balance of solvent; Wherein the mass ratio of the surfactant to the auxiliary emulsifier is 2-5:1; The mass ratio of the stabilizer to the functional modifier is 1-3:1; The solvent is one or more of deionized water, methanol, ethanol or isopropanol. Preferably, the surfactant includes at least one of a nonionic surfactant, an anionic surfactant, or a zwitterionic surfactant. Preferably, the nonionic surfactant is at least one selected from sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, alkylphenol ethoxylate or fatty alcohol ethoxylate. Preferably, the co-emulsifier comprises at least one of a monohydric alcohol, a dihydric alcohol or a polyhydric alcohol. Preferably, the auxiliary emulsifier is at least one of n-propanol, n-butanol, isoamyl alcohol, ethylene glycol or glycerol. Preferably, the inorganic salts include sodium chloride, magnesium chloride, calcium nitrate or magnesium sulfate; the water-soluble high molecular polymer comprises polyvinyl alcohol, sodium carboxymethyl cellulose or polyacrylamide. Preferably, the functional modifier comprises nano-silica and an antioxidant. Preferably, the stabilizer comprises at least one of inorganic salts, water-soluble high molecular polymers or nano inorganic particles. The method for preparing emulsified diesel oil by using the diesel oil quick emulsifying agent comprises the following steps: S1, oil phase pretreatment, namely heating diesel oil, and adding a diesel oil rapid emulsifier according to 3% -8% of the total mass of the diesel oil; s2, water phase treatment, namely heating deionized water, wherein the addition amount is 10% -25% of the mass of diesel oil; s3, shearing and emulsifying, namely starting a high-speed shearing and emulsifying machine, and mixing the modified oil phase of the S1 and deionized water obtained in the S2 into a shearing cavity; S4, maintaining the rotating speed of 3000-6000 r/min, and continuing to shear and emulsify for 10-20 minutes until the system forms micro-emulsion with uniform particle size and semitransparent or milky appearance; s5, standing and curing at normal temperature to obtain the emulsified diesel oil. Preferably, deionized water in the step S3 is slowly dripped into the modified oil phase at a constant flow rate, and the dripping time is 8-15 minutes. Compared with the prior art, the invention has the advantages that: according to the invention, the interfacial tension is obviously reduced through the surfactant and the auxiliary emulsifier, and the stable microemulsion is formed in a short time by matching with a shearing process; The nano silicon dioxide in the functional modifier has a catalytic combustion effect, and combines the micro-explosion effect of emulsified water, so that the diesel oil is combusted more fully, the thermal efficiency is improved, and meanwhile, the emission of NOx and carbon smoke is greatly reduced; The preparation method of the invention does not need expensive equipment such as high-pressure homogenization and the like, only needs high-speed shearing, has easily obtained raw materials and is suitable for ind