CN110564459A - Diesel oil pour point depressant containing nonionic surfactant and preparation and application thereof - Google Patents

Diesel oil pour point depressant containing nonionic surfactant and preparation and application thereof Download PDF

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Publication number
CN110564459A
CN110564459A CN201910744526.3A CN201910744526A CN110564459A CN 110564459 A CN110564459 A CN 110564459A CN 201910744526 A CN201910744526 A CN 201910744526A CN 110564459 A CN110564459 A CN 110564459A
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nonionic surfactant
pour point
point depressant
diesel oil
vinyl pyrrolidone
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韩生
杨太顺
殷素雅
解麦莹
陈凤飞
蔺华林
薛原
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Shanghai Institute of Technology
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Shanghai Institute of Technology
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/04—Liquid carbonaceous fuels essentially based on blends of hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/14—Use of additives to fuels or fires for particular purposes for improving low temperature properties
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/18—Use of additives to fuels or fires for particular purposes use of detergents or dispersants for purposes not provided for in groups C10L10/02 - C10L10/16
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/18—Organic compounds containing oxygen
    • C10L1/19—Esters ester radical containing compounds; ester ethers; carbonic acid esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/22—Organic compounds containing nitrogen
    • C10L1/234—Macromolecular compounds
    • C10L1/238—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The invention relates to a diesel oil pour point depressant containing a nonionic surfactant, and preparation and application thereof, wherein the diesel oil pour point depressant comprises the following components in percentage by weight: 40-80% of nonionic surfactant and 20-60% of tetradecyl methacrylate-N-vinyl pyrrolidone copolymer. Compared with the prior art, the diesel oil pour point depressant containing the nonionic surfactant contains two nonionic surfactants, and the diesel oil pour point depressant containing the nonionic surfactant is added into diesel oil, so that the condensation point of the diesel oil can be reduced by 12-17 ℃ and the cold filter plugging point can be reduced by 6-11 ℃ through tests, the problem of poor fluidity of the diesel oil at low temperature is effectively solved, and the diesel oil has wider application prospect.

Description

diesel oil pour point depressant containing nonionic surfactant and preparation and application thereof
Technical Field
The invention belongs to the technical field of diesel pour point depressants, and relates to a diesel pour point depressant containing a nonionic surfactant, and preparation and application thereof.
background
Diesel is a middle distillate consisting of normal paraffins and other hydrocarbons. At low temperature, the solubility of hydrocarbons in the diesel oil is reduced, so that wax crystals are separated out in the form of crystals, and the wax crystals are gathered together under the action of trouble to finally form a three-dimensional network structure, so that the residual diesel oil is wrapped in the three-dimensional network structure, and the low-temperature flow property of the diesel oil is influenced. At present, the pour point depressant is added into diesel oil, which is the most effective way for improving the fluidity of the diesel oil, and the cold filter plugging point and the condensation point can be effectively reduced by adding a small amount of the pour point depressant, so that the low-temperature fluidity of the diesel oil is further improved.
Currently developed diesel pour point depressants mainly comprise ethylene-vinyl acetate copolymers, acrylate polymers, polar nitrogen-containing compounds, alpha-olefin copolymers, maleic anhydride polymers and the like. The pour point depressant has an unobvious pour point depression effect, and the problem of poor effect of diesel at low temperature can be effectively solved by compounding the pour point depressant with a surfactant, so that the development space of the diesel pour point depressant is further expanded.
For example, chinese patent 201811597071.9 discloses a method for preparing a pour point depressant for diesel oil, which comprises preparing higher ester of methacrylic acid by direct esterification method using methacrylic acid and polyhydric alcohol as raw materials, toluene as solvent and water carrying agent, p-toluenesulfonic acid as catalyst, and hydroquinone as polymerization inhibitor; and then under the protection of nitrogen, adding higher methacrylate, maleic anhydride and vinyl acetate in a certain proportion into a reaction kettle, heating to the reaction temperature, adding a certain amount of initiator, polymerizing for 6-8 hours at constant temperature, and drying with anhydrous calcium chloride to obtain the faint yellow viscous liquid pour point depressant. This patent suffers from the drawback that the terpolymer adds to the cost of the polymerized monomer and to the overall cost as a diesel pour point depressant.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a diesel pour point depressant containing a nonionic surfactant, and preparation and application thereof.
The purpose of the invention can be realized by the following technical scheme:
One of the technical schemes of the invention is to provide a diesel pour point depressant containing a nonionic surfactant, which comprises the following components in percentage by weight: 40-80% of nonionic surfactant and 20-60% of tetradecyl methacrylate-N-vinyl pyrrolidone copolymer.
Further, the nonionic surfactant is triethanolamine oleate soap and/or span 80, and when the triethanolamine oleate soap and the span 80 are added simultaneously, the mass ratio is (1-3): (1-3).
Further, the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is prepared by the following method:
Mixing the tetradecyl methacrylate and the N-vinyl pyrrolidone, adding the mixture and benzoyl peroxide into toluene, and heating to react to obtain the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer.
furthermore, the mol ratio of the tetradecyl methacrylate to the N-vinyl pyrrolidone is (10-15): 1.
Furthermore, the mass ratio of the benzoyl peroxide to the mixture of the tetradecyl methacrylate and the N-vinyl pyrrolidone is 1 (95-105).
Furthermore, the mass ratio of the toluene to the mixture of the tetradecyl methacrylate and the N-vinyl pyrrolidone is 1 (3-5).
further, the heating reaction conditions are as follows: reacting for 8-10h at 110-130 ℃.
The second technical scheme of the invention is to provide a preparation method of the diesel oil pour point depressant containing the nonionic surfactant, which is characterized in that the nonionic surfactant and the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer are uniformly mixed to obtain the diesel oil pour point depressant containing the nonionic surfactant.
the third technical scheme of the invention is to provide application of the diesel oil pour point depressant containing the nonionic surfactant, which is characterized in that the diesel oil pour point depressant containing the nonionic surfactant is added into diesel oil, wherein the mass percentage of the diesel oil pour point depressant containing the nonionic surfactant in the diesel oil is 0.1-0.2%.
Further, after adding the diesel oil pour point depressant containing the nonionic surfactant into the diesel oil, performing ultrasonic dispersion for 25-35min at 35-45 ℃.
In the invention, the long alkyl chain of the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer can increase the oil solubility of the polymer in diesel oil and generate eutectic effect with wax crystals. The polar pyrrolidone group contained in the diesel oil can increase the solubility and the dispersibility in the diesel oil, change the crystal habit and further reduce the low-temperature fluidity of the diesel oil.
In the invention, the nonionic surfactant selects triethanolamine oleate soap and span 80, wherein the triethanolamine oleate soap is a nonionic surfactant formed by amidating oleic acid and triethanolamine, has a nitrogen-containing strong polar group, and an N atom structure can enable wax crystals to mutually repel and further hinder the aggregation of the wax crystals; the span 80 and other span surfactants have better wax crystal dispersing effect. Compared with other nonionic surfactants added into diesel oil, the triethanolamine oleate soap and the span 80 have more stable dispersion, and the low-temperature flow property of the diesel oil can be further improved by adding a small amount of the triethanolamine oleate soap and the span 80.
In the invention, when the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is compounded with the nonionic surfactant, the nonionic surfactant is used as an auxiliary agent to well enlarge the range of the main agent pour point depressant. Compared with the prior art, the diesel oil pour point depressant containing the nonionic surfactant contains the nonionic surfactant, and the diesel oil pour point depressant containing the nonionic surfactant is added into diesel oil, so that the condensation point of the diesel oil can be reduced by 12-17 ℃ and the cold filter plugging point can be reduced by 6-11 ℃ through tests, and the low-temperature flow property of the diesel oil is further improved.
Drawings
FIG. 1 is a nuclear magnetic resonance (1HNMR) spectrum of a tetradecyl methacrylate-N-vinylpyrrolidone copolymer prepared in example 1;
FIG. 2 is an IR spectrum of a tetradecyl methacrylate-N-vinylpyrrolidone copolymer prepared in example 1.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Each raw material used in the following examples is a commercially available product. Wherein: the 0# diesel oil is purchased from Shanghai Songjiang gasoline station, the triethanolamine oleate soap is purchased from Shandong Youso chemical technology Co., Ltd, and the span 80 is purchased from Shanghai Tantake technology Co., Ltd. The rest of the raw materials or processing techniques which are not specifically described are conventional commercial raw materials or conventional techniques in the field.
The measuring method of the condensation point is carried out according to GB510-83 petroleum product condensation point determination, and the measuring method of the cold filter plugging point is carried out according to ANSI/ASTM D6371-2005 diesel and heated fuel cooling filter plugging point test method.
Example 1:
A diesel oil pour point depressant containing nonionic surfactant comprises the following components in percentage by weight:
60 percent of triethanolamine oleate soap,
The content of the span is 8020 percent,
20% of tetradecyl methacrylate-N-vinyl pyrrolidone copolymer.
The preparation method of the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer comprises the following steps: tetradecyl methacrylate and N-vinyl pyrrolidone in a molar ratio of 12:1 are mixed, added into a toluene solvent, and reacted at 120 ℃ for 9 hours under the condition that benzoyl peroxide accounting for 0.9 percent of the total mass of reactants is used as an initiator, so that the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is prepared. The mass ratio of toluene to the mixture of tetradecyl methacrylate and N-vinylpyrrolidone was 1: 4.
The obtained tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is subjected to nuclear magnetic and infrared characterization, and the results are respectively shown in FIG. 1 and FIG. 2. As can be seen from FIG. 1, δ is the eH3.93 is-C ═ O-O-linked methylene-CH2Peak at-f δH3.06 is the-CH-peak attached to the pyrrolidone ring, delta at iH3.74 is pyrrolidinone ring-CH2peak of-g, δ at hH1.81-1.96 is pyrrolidones ring-CH2Peak of-deltaHNo distinct characteristic peak in 5-7, proving that C ═ C is completely polymerized; as can be seen from FIG. 2, the peak of stretching vibration of methylene in the long-chain ester is 2924cm-1And 2853cm-1the C ═ O stretching vibration peak in the long-chain ester is 1725cm-1At a distance of 1681cm-1is a carbonyl-C ═ O strong absorption peak in the polymer, 1284cm-1Is a C-N bond stretching vibration absorption peak.
The preparation method of the diesel pour point depressant containing the nonionic surfactant comprises the following steps: the triethanolamine oleate soap, the span 80 and the methacrylic acid tetradecyl ester-N-vinyl pyrrolidone copolymer are directly mixed to obtain the triethanolamine oleate soap.
When the diesel oil pour point depressant containing the nonionic surfactant is applied, the diesel oil pour point depressant is added into the Songjiang No. 0 diesel oil according to the mass percentage of 0.15 percent, and ultrasonic dispersion is carried out for 30min at the temperature of 40 ℃. Tests show that the condensation point and the cold filter plugging point of the 0# diesel oil are respectively reduced by 14 ℃ and 8 ℃.
Comparative example 1:
In comparison with example 1, the other conditions were not changed, but only tetradecyl methacrylate was added to the tetradecyl methacrylate-N-vinylpyrrolidone copolymer, and the N-vinylpyrrolidone component was not introduced. Mixing triethanolamine oleate soap, span 80 and tetradecyl methacrylate copolymer directly.
When the diesel oil pour point depressant containing the nonionic surfactant is applied, the diesel oil pour point depressant is added into the Songjiang No. 0 diesel oil according to the mass percentage of 0.15 percent, and ultrasonic dispersion is carried out for 30min at the temperature of 40 ℃. Tests show that the condensation point and the cold filter plugging point of the 0# diesel oil are respectively reduced by 12 ℃ and 6 ℃.
compared with the comparative examples, the introduction of the N-vinyl pyrrolidone in the copolymer can effectively prevent wax crystal particles from approaching each other to form large wax crystals, thereby improving the pour point depression effect.
comparative example 2:
In this example, triethanolamine oleate soap, span 80, and tetradecyl methacrylate-N-vinyl pyrrolidone copolymer were mixed directly.
When the diesel pour point depressant containing the nonionic surfactant is applied, compared with the diesel pour point depressant in example 1, the conditions are not changed, and when the diesel pour point depressant is specifically used, the diesel pour point depressant is added into the No. 0 diesel of Songjiang according to the mass percentage of 0.1 percent and is subjected to ultrasonic dispersion for 30min at the temperature of 40 ℃. Tests show that the condensation point and the cold filter plugging point of the 0# diesel oil are respectively reduced by 12 ℃ and 6 ℃.
Compared with the comparative examples, the addition amount affects the pour point depression effect, the addition amount is in a proper range, the pour point depression effect can be better exerted, and the over-high or over-low dosage is not beneficial to the flow of diesel at low temperature.
comparative example 3
The remaining conditions were unchanged compared to example 1, except that in this example span 80 was replaced with an equal mass triethanolamine oleate soap.
When the diesel oil pour point depressant containing the nonionic surfactant is applied, the diesel oil pour point depressant is added into the Songjiang No. 0 diesel oil according to the mass percentage of 0.15 percent, and ultrasonic dispersion is carried out for 30min at the temperature of 40 ℃. Tests show that the condensation point and the cold filter plugging point of the 0# diesel oil are respectively reduced by 12 ℃ and 6 ℃.
Example 2:
A diesel oil pour point depressant containing nonionic surfactant comprises the following components in percentage by weight:
20 percent of triethanolamine oleate soap,
The percentage of span is 8060 percent,
20% of tetradecyl methacrylate-N-vinyl pyrrolidone copolymer.
the preparation method of the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer comprises the following steps: tetradecyl methacrylate and N-vinyl pyrrolidone in a molar ratio of 12:1 are mixed, added into a toluene solvent, and reacted at 120 ℃ for 9 hours under the condition that benzoyl peroxide accounting for 0.9 percent of the total mass of reactants is used as an initiator, so that the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is prepared. The mass ratio of toluene to the mixture of tetradecyl methacrylate and N-vinylpyrrolidone was 1: 4.
the preparation method of the diesel pour point depressant containing the nonionic surfactant comprises the following steps: the triethanolamine oleate soap, the span 80 and the methacrylic acid tetradecyl ester-N-vinyl pyrrolidone copolymer are directly mixed to obtain the triethanolamine oleate soap.
When the diesel oil pour point depressant containing the nonionic surfactant is applied, the diesel oil pour point depressant is added into the Songjiang No. 0 diesel oil according to the mass percentage of 0.15 percent, and ultrasonic dispersion is carried out for 30min at the temperature of 40 ℃. Tests show that the condensation point and the cold filter plugging point of the 0# diesel oil are respectively reduced by 12 ℃ and 6 ℃.
Example 3:
A diesel oil pour point depressant containing nonionic surfactant comprises the following components in percentage by weight:
20 percent of triethanolamine oleate soap,
The content of the span is 8020 percent,
and 60% of tetradecyl methacrylate-N-vinyl pyrrolidone copolymer.
the preparation method of the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer comprises the following steps: tetradecyl methacrylate and N-vinyl pyrrolidone in a molar ratio of 12:1 are mixed, added into a toluene solvent, and reacted at 120 ℃ for 9 hours under the condition that benzoyl peroxide accounting for 0.9 percent of the total mass of reactants is used as an initiator, so that the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is prepared. The mass ratio of toluene to the mixture of tetradecyl methacrylate and N-vinylpyrrolidone was 1: 4.
The preparation method of the diesel pour point depressant containing the nonionic surfactant comprises the following steps: the triethanolamine oleate soap, the span 80 and the methacrylic acid tetradecyl ester-N-vinyl pyrrolidone copolymer are directly mixed to obtain the triethanolamine oleate soap.
When the diesel oil pour point depressant containing the nonionic surfactant is applied, the diesel oil pour point depressant is added into the Songjiang No. 0 diesel oil according to the mass percentage of 0.15 percent, and ultrasonic dispersion is carried out for 30min at the temperature of 40 ℃. Tests show that the condensation point and the cold filter plugging point of the 0# diesel oil are respectively reduced by 15 ℃ and 10 ℃.
Example 4:
a diesel oil pour point depressant containing nonionic surfactant comprises the following components in percentage by weight:
Triethanolamine oleate soap was mixed with tetradecyl methacrylate-N-vinyl pyrrolidone copolymer at 1: 1.
The preparation method of the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer comprises the following steps: tetradecyl methacrylate and N-vinyl pyrrolidone in a molar ratio of 12:1 are mixed, added into a toluene solvent, and reacted at 120 ℃ for 9 hours under the condition that benzoyl peroxide accounting for 0.9 percent of the total mass of reactants is used as an initiator, so that the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is prepared. The mass ratio of toluene to the mixture of tetradecyl methacrylate and N-vinylpyrrolidone was 1: 4.
The preparation method of the diesel pour point depressant containing the nonionic surfactant comprises the following steps: the triethanolamine oleate soap and the methacrylic acid tetradecyl ester-N-vinyl pyrrolidone copolymer are directly mixed.
when the diesel oil pour point depressant containing the nonionic surfactant is applied, the diesel oil pour point depressant is added into the Songjiang No. 0 diesel oil according to the mass percentage of 0.15 percent, and ultrasonic dispersion is carried out for 30min at the temperature of 40 ℃. Tests show that the condensation point and the cold filter plugging point of the 0# diesel oil are respectively reduced by 17 ℃ and 11 ℃.
example 5:
A diesel oil pour point depressant containing nonionic surfactant comprises the following components in percentage by weight:
Span 80 and the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer are mixed according to the mass ratio of 1: 1.
The preparation method of the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer comprises the following steps: tetradecyl methacrylate and N-vinyl pyrrolidone in a molar ratio of 12:1 are mixed, added into a toluene solvent, and reacted at 120 ℃ for 9 hours under the condition that benzoyl peroxide accounting for 0.9 percent of the total mass of reactants is used as an initiator, so that the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is prepared.
The preparation method of the diesel pour point depressant containing the nonionic surfactant comprises the following steps: the span 80 and the methacrylic acid tetradecyl ester-N-vinyl pyrrolidone copolymer are directly mixed.
When the diesel oil pour point depressant containing the nonionic surfactant is applied, the diesel oil pour point depressant is added into the Songjiang No. 0 diesel oil according to the mass percentage of 0.15 percent, and ultrasonic dispersion is carried out for 30min at the temperature of 40 ℃. Tests show that the condensation point and the cold filter plugging point of the 0# diesel oil are respectively reduced by 14 ℃ and 6 ℃.
Example 6
Compared to example 1, most of them are the same except that in this example: the molar ratio of tetradecyl methacrylate to N-vinylpyrrolidone was 10: 1.
Example 7
Compared to example 1, most of them are the same except that in this example: the molar ratio of tetradecyl methacrylate to N-vinylpyrrolidone was 15: 1.
Example 8
Compared to example 1, most of them are the same except that in this example:
The addition amount of the benzoyl peroxide satisfies the following requirements: the mass ratio of the compound to the mixture of tetradecyl methacrylate and N-vinyl pyrrolidone is 1: 95.
example 9
compared to example 1, most of them are the same except that in this example:
The addition amount of the benzoyl peroxide satisfies the following requirements: the mass ratio of the compound to the mixture of the tetradecyl methacrylate and the N-vinyl pyrrolidone is 1: 105.
Example 10
compared to example 1, most of them are the same except that in this example: the conditions for the heating reaction were: the reaction was carried out at 110 ℃ for 10 h.
Example 11
Compared to example 1, most of them are the same except that in this example: the conditions for the heating reaction were: the reaction was carried out at 130 ℃ for 8 h.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (10)

1. A diesel pour point depressant containing a nonionic surfactant is characterized by comprising the following components in percentage by weight: 40-80% of nonionic surfactant and 20-60% of tetradecyl methacrylate-N-vinyl pyrrolidone copolymer.
2. The diesel pour point depressant containing the nonionic surfactant according to claim 1, wherein the nonionic surfactant is triethanolamine oleate soap and/or span 80, and when the nonionic surfactant and the triethanolamine oleate soap and/or span 80 are added simultaneously, the mass ratio of (1-3): (1-3).
3. The non-ionic surfactant-containing diesel pour point depressant according to claim 1, wherein the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer is prepared by the following method:
Mixing the tetradecyl methacrylate and the N-vinyl pyrrolidone, adding the mixture and benzoyl peroxide into toluene, and heating to react to obtain the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer.
4. the nonionic surfactant-containing diesel pour point depressant according to claim 3, wherein the molar ratio of tetradecyl methacrylate to N-vinylpyrrolidone is (10-15): 1.
5. The nonionic surfactant-containing diesel pour point depressant according to claim 3, wherein the mass ratio of the benzoyl peroxide to the mixture of the tetradecyl methacrylate and the N-vinyl pyrrolidone is 1 (95-105).
6. The nonionic surfactant-containing diesel pour point depressant according to claim 3, wherein the mass ratio of toluene to the mixture of tetradecyl methacrylate and N-vinylpyrrolidone is 1 (3-5).
7. The nonionic surfactant-containing diesel pour point depressant according to claim 3, wherein the heating reaction conditions are as follows: reacting for 8-10h at 110-130 ℃.
8. The method for preparing the diesel pour point depressant containing the nonionic surfactant as claimed in any one of claims 1 to 7, wherein the nonionic surfactant is uniformly mixed with the tetradecyl methacrylate-N-vinyl pyrrolidone copolymer to obtain the diesel pour point depressant containing the nonionic surfactant.
9. The use of a nonionic surfactant-containing diesel pour point depressant according to any one of claims 1 to 7, wherein the nonionic surfactant-containing diesel pour point depressant is added to diesel fuel, wherein the nonionic surfactant-containing diesel pour point depressant is present in the diesel fuel in an amount of 0.1 to 0.2% by weight.
10. The use of the nonionic surfactant-containing diesel pour point depressant according to claim 9, wherein the nonionic surfactant-containing diesel pour point depressant is added to diesel and then ultrasonically dispersed at 35-45 ℃ for 25-35 min.
CN201910744526.3A 2019-08-13 2019-08-13 Diesel oil pour point depressant containing nonionic surfactant and preparation and application thereof Pending CN110564459A (en)

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CN111704942A (en) * 2020-05-20 2020-09-25 上海应用技术大学 Diesel oil pour point depressant composition containing surfactant and preparation and application thereof
CN114853945A (en) * 2022-04-29 2022-08-05 山东大学 Water-soluble nonionic polymer viscosity reducer, preparation method thereof and application thereof in viscosity reduction of extra-thick oil
CN114853945B (en) * 2022-04-29 2023-02-17 山东大学 Water-soluble nonionic polymer viscosity reducer, preparation method thereof and application thereof in viscosity reduction of extra-thick oil

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