CN101709235B - Method for preparing high-stability micro-emulsion diesel - Google Patents
Method for preparing high-stability micro-emulsion diesel Download PDFInfo
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- CN101709235B CN101709235B CN 200910230054 CN200910230054A CN101709235B CN 101709235 B CN101709235 B CN 101709235B CN 200910230054 CN200910230054 CN 200910230054 CN 200910230054 A CN200910230054 A CN 200910230054A CN 101709235 B CN101709235 B CN 101709235B
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Abstract
The invention discloses a method for preparing high-stability micro-emulsion diesel. The method comprises the following steps: firstly putting a NaOH solution and a diesel sample in a microwave reactor, carrying out the microwave reaction at room temperature under the radiation power of 250-500 W, cooling, separating the liquid, taking the supernatant to prepare diesel treated by microwave alkali liquor, then mixing 5% of micro emulsifier and 85% of the diesel treated by microwave alkali liquor, and dripping 100% of water at room temperature. The invention firstly uses the microwave radiation under the stirring condition, and then carries out the micro-emulsion treatment on the obtained diesel to water-in-oil type reverse micelle, thereby greatly improving the stability of oil and stably storing the oil for more than one year without generating colloids and dregs.
Description
Technical field
The present invention relates to a kind of preparation method of micro-emulsion diesel, be specifically related to a kind of preparation method of high-stability micro-emulsion diesel, belong to the chemistry of fuel field.
Background technology
Refinery is through catalytic cracking resulting diesel component, because to have the non-hydrocarbons compound and the unsaturated hydrocarbons, particularly diolefine of a large amount of sulfur-bearings, nitrogen, oxygen be the component of oxidation the most easily in the hydro carbons.Sulfocompound, particularly small molecules mercaptan, thiophenol can promote the oxidation of HYDROCARBONS IN DIESEL OIL, are the initiators of diesel oil oxidation.Under the initiation of micro-non-hydrocarbon compound unsaturated hydro carbons particularly diolefine polymerization or condensation reaction take place easily generates colloid and insoluble sediment, the color and luster of diesel oil is constantly deepened, influence the transportation and the burning of diesel oil.And the colloid that generates can be stopped up diesel filter with sediment, forms carbon deposit in the filter tip position, spray condition degenerates, engine consumption increases and environment is contaminated etc., also can make the mover cisco unity malfunction in the time of seriously.Therefore, the stability of diesel oil has caused scientific worker's very big concern.
The method that prior art solves diesel oil stability is to adopt hydrogenation technique, and in oil product, is adding hindered phenol type antioxidant after the unifining.But this kind hydrogenation technique complicacy, facility investment is big, the hydrogen source that expense is high and needs are expensive etc.Adopt the method for the raising diesel oil stability of non-hydrogen source that acid-alkali refining, solvent treatment, refining with adsorbents and use diesel oil stabilizing agent etc. are arranged.Acid-alkali refining can lose part diesel oil, and the problem of bringing waste residue to handle simultaneously also pollutes the environment; Solvent-refined cost is higher, and the solvent oil yield is relatively low; Though the refining with adsorbents cost is low, the loading capacity of sorbent material is limited, can not operate continuously, and often need regenerate to sorbent material.Also have the method for in oil product, adding diesel oil stabilizing agent, the recombiner that diesel oil stabilizing agent generally is made up of one or more additives such as oxidation inhibitor, dispersion agent, sanitas, metal passivators in addition.But adopt diesel oil stabilizing agent to exist use range limited, perhaps additive is to the toxic effect of environment, and perhaps use cost is crossed problems such as height.
Summary of the invention
The present invention provides a kind of stablizing to deposit 1 year for the problem of the less stable of the present clean diesel of solution, layering do not occur, does not produce the preparation method of deposition and gelationus high-stability micro-emulsion diesel.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
The preparation method of high-stability micro-emulsion diesel of the present invention comprises the steps:
(1) with NaOH solution and diesel samples NaOH solution: diesel samples=0.2-0.5 by volume; Place microwave reactor; After carrying out microwave reaction 1-14min under the room temperature radiation power 250-500W, cooling 10～15min, separatory is got the upper strata and is the diesel oil that microwave alkali lye is handled;
(2) take by weighing the water of 5% micro-emulsifier, 85% step (1) gained diesel oil and 10% by weight percentage, micro-emulsifier is mixed stirring with diesel oil, room temperature drips water and promptly gets high-stability micro-emulsion diesel;
NaOH solution weight concentration is 0.5-5% described in the step (1), and said diesel samples is a catalytic cracking diesel oil; Micro-emulsifier described in the step (2) is made up of the alkali lye of 75-80% organic acid, 10-15%, the nonionogenic tenside of 5-7% and the middle long-chain alcohol analog assistant of 2-5% by weight percentage.
Preferably the organic acid in the said micro-emulsifier of step (2) is monocarboxylic acid or the di-carboxylic acid of C8-C18; Comprise sad, suberic acid, n-capric acid, positive laurostearic acid, positive TETRADECONIC ACID, positive palmitic acid or oleic acid; Alkali lye is that the aqueous solution, the weight concentration of sodium hydroxide or Pottasium Hydroxide is 20-40%; Nonionogenic tenside is polyisobutene succinic diamide or polyoxyethylene polyoxypropylene block copolymer, and middle long-chain alcohol analog assistant is propyl carbinol, Pentyl alcohol or n-hexyl alcohol.
Adopt earlier among the present invention and stir microwave radiation down; Further reduce naphthenic acid and small molecules mercaptan in the oil product fully, thiophenol etc. can promote the initiator of the oxidation of HYDROCARBONS IN DIESEL OIL, and then the diesel oil that obtains are carried out microemulsified handle; Owing to can form the water-in-oil-type reverse micelle behind the microemulsified; Have ideal chemical thermodynamics stability, can improve the stability of oil product greatly, can stablize and deposit more than 1 year and do not produce colloid or sediment.
Embodiment
Embodiment 1
Measure the catalytic cracking diesel oil of 1000ml and the 1wt%NaOH solution of 250ml; Place microwave reactor; After carrying out microwave reaction 5min under the room temperature radiation power 375W; Cooling 10～15min, separatory is got the upper strata and is the diesel oil that microwave alkali lye is handled, and takes by weighing 40g n-capric acid, 5g weight concentration 40%NaOH solution, 3.5g polyisobutene succinic diamide and 1.5g propyl carbinol then; Behind the uniform mixing it is added to mix in the diesel oil that 850g microwave alkali lye handles and stir, keep stirring and under room temperature, slowly drip 100g water and promptly get high-stability micro-emulsion diesel of the present invention.
Embodiment 2
Measure the catalytic cracking diesel oil of 1000ml and the 2wt%NaOH solution of 200ml; Place microwave reactor; After carrying out microwave reaction 10min under the room temperature radiation power 300W; Cooling 10～15min; Separatory is got the upper strata and is the diesel oil that microwave alkali lye is handled, and takes by weighing then behind 37.5g suberic acid, 7.5g weight concentration 35%NaOH solution, 2.5g polyoxyethylene polyoxypropylene block copolymer and the 2.5g Pentyl alcohol uniform mixing it is added to mix in the diesel oil that 850g microwave alkali lye handles to stir, and keeps stirring under room temperature, slowly dripping 100g water and promptly getting high-stability micro-emulsion diesel of the present invention.
Embodiment 3
Measure the catalytic cracking diesel oil of 1000ml and the 5wt%NaOH solution of 500ml; Place microwave reactor; After carrying out microwave reaction 5min under the room temperature radiation power 500W; Cooling 10～15min; Separatory is got the upper strata and is the diesel oil that microwave alkali lye is handled, and takes by weighing then behind 39.05g oleic acid, 6.25g weight concentration 20%NaOH solution, 3.15g polyisobutene succinic diamide and the 1.55g n-hexyl alcohol uniform mixing it is added to mix in the diesel oil that 850g microwave alkali lye handles to stir, and keeps stirring under room temperature, slowly dripping 100g water and promptly getting high-stability micro-emulsion diesel of the present invention.
Claims (1)
1. the preparation method of a high-stability micro-emulsion diesel is characterized in that comprising the steps:
(1) with NaOH solution and diesel samples NaOH solution: diesel samples=0.2-0.5 by volume; Place microwave reactor; After carrying out microwave reaction 1-14min under the room temperature radiation power 250-500W, cooling 10～15 min, separatory is got the upper strata and is the diesel oil that microwave alkali lye is handled;
(2) take by weighing the water of 5% micro-emulsifier, 85% step (1) gained diesel oil and 10% by weight percentage, micro-emulsifier is mixed stirring with diesel oil, room temperature drips water and promptly gets high-stability micro-emulsion diesel;
NaOH solution weight concentration is 0.5-5% described in the step (1), and said diesel samples is a catalytic cracking diesel oil; Micro-emulsifier described in the step (2) is made up of the alkali lye of 75-80% organic acid, 10-15%, the nonionogenic tenside of 5-7% and the middle long-chain alcohol analog assistant of 2-5% by weight percentage;
Said organic acid is C
8-C
18Monocarboxylic acid or di-carboxylic acid, comprise sad, suberic acid, n-capric acid, positive laurostearic acid, positive TETRADECONIC ACID, positive palmitic acid or oleic acid;
Said alkali lye is the aqueous solution of sodium hydroxide or Pottasium Hydroxide, and weight concentration is 20-40%,
Said nonionogenic tenside is polyisobutene succinic diamide or polyoxyethylene polyoxypropylene block copolymer, and said middle long-chain alcohol analog assistant is propyl carbinol, Pentyl alcohol or n-hexyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910230054 CN101709235B (en) | 2009-11-11 | 2009-11-11 | Method for preparing high-stability micro-emulsion diesel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910230054 CN101709235B (en) | 2009-11-11 | 2009-11-11 | Method for preparing high-stability micro-emulsion diesel |
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| CN101709235A CN101709235A (en) | 2010-05-19 |
| CN101709235B true CN101709235B (en) | 2012-12-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103642548B (en) * | 2013-12-25 | 2015-11-18 | 济南开发区星火科学技术研究院 | A kind of micro emulsion diesel fuel |
| CN103805299B (en) * | 2014-03-13 | 2015-06-03 | 黑龙江省能源环境研究院 | Methyl alcohol emulsified diesel oil and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1236003A (en) * | 1999-05-17 | 1999-11-24 | 曹成云 | Diesel oil additive and diesel product added with said additive |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1236003A (en) * | 1999-05-17 | 1999-11-24 | 曹成云 | Diesel oil additive and diesel product added with said additive |
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