CN101665729B - Water resisting methanol gasoline and preparation method thereof - Google Patents

Abstract

The invention relates to a water resisting methanol gasoline and a preparation method thereof, aiming to provide the water resisting methanol with favorable water resisting performance and dynamic performance. The water resisting methanol gasoline comprises the following components by weight percent: 40-68% of gasoline, 10-50% of methanol, 2-10% of light weight oil and 5-15% of additive. The preparation method comprises the following steps: firstly, mixing the components in an additive except an emulsifier evenly in proportion for later use; mixing the gasoline and the light weight oil evenly in proportion; adding the methanol into a mixture of the gasoline and the light weight oil in proportion; adding the mixture of the components of the additive without containing the emulsifier into a mixture of the gasoline, the light weight oil and the methanol under stirring; adding the emulsifier gradually, and stirring for about 30min to obtain an even and transparent mixture.

Description

Water resisting methanol gasoline and preparation method thereof

Technical field

The present invention relates to alcohols alternative fuel preparation field, particularly a kind of methanol gasoline and preparation method thereof.

Background technology

Along with the fast development of economy, the demand growth of the conventional oils such as gasoline, diesel oil that is mainly derived from oil is rapid, and in the face of limited petroleum resources, energy dilemma becomes the extremely urgent problem that solves of needing of each country.Methyl alcohol is large Organic Chemicals, and the aboundresources wide material sources can pass through coal Synthesis, Sweet natural gas preparation, also can produce by timber even rubbish renewable recycling.The different methanol gasolines that form are a lot of at present, but all relate to the problem of meeting the muddy layering of water, and usual production is not separated below can only controlling to 1% water-content.For fear of the muddy layering of product, the preparation of common methanol gasoline, transportation, use procedure have strict demand to water, and under the moist rainy environment of south China, methanol gasoline is very easy to be separated, so the water resistance of methanol gasoline is an important indicator that affects its widespread use.

Summary of the invention

The present invention seeks to overcome the deficiency of above-mentioned prior art, all good water resisting methanol gasolines of a kind of water resistance and dynamic performance are provided, and preparation method thereof.

Consisting of of water resisting methanol gasoline of the present invention: gasoline 40～68%, methyl alcohol 10～50%, lightweight oil 2～10%, additive 5～15%.Each constituent mass per-cent sum is 100%.

Gasoline is a kind of in No. 90, GB, No. 93, No. 95, No. 97 gasoline; Methyl alcohol is industrial methanol, water content＜0.1%; The density of lightweight oil is between 0.65～0.68.

Each component and account for methanol gasoline total mass per-cent and be in the additive: lipid acid 2～8.0%, naphthenic acid 2～4.0%, emulsifying agent 0.4～4.0%, thanomin 0.5～5.0%, solubilizing agent 0.05～0.5%.

Emulsifying agent is the mixture of propyl carbinol, n-hexyl alcohol, polyoxyethylene glycol, and each component is by mass percentage: propyl carbinol 40～60%, n-hexyl alcohol 20～50%, polyoxyethylene glycol 20～40%.Each constituent mass per-cent sum is 100%.Propyl carbinol wherein can replace with isopropylcarbinol, distinguishes without obvious in the use.

Solubilizing agent adopts polyethers, and its HLB value is between 11～14, and molecular weight is between 2000～5000.

Thanomin is any one in monoethanolamine, diethanolamine, the trolamine, or two or three mixture of arbitrary proportion wherein.Wherein, except the increase of trolamine ratio may cause system viscosity slightly raises, composition and the blending ratio of said mixture have no significant effect the finished product.

The methanol gasoline trade mark that methanol content is prepared as required is fixed, and such as need preparation M15 methanol gasoline, getting methanol content when then preparing is 15%.

Along with methanol content in the proportioning increases, the gasoline consumption reduces; At methanol content 10～20%, gasoline content is not less than 60% time, and methanol gasoline dynamic performance of the present invention is without considerable change; But methanol content is greater than 40%, and gasoline content may cause dynamic performance to descend less than 50%.

The preparation method of water resisting methanol gasoline of the present invention is:

(1) component of each except emulsifying agent in the additive is mixed in proportion, for subsequent use;

(2) gasoline and lightweight oil are mixed in proportion, again methyl alcohol is joined in the mixture of gasoline and lightweight oil in proportion;

Each component mixture of additive that (3) will not contain emulsifying agent joins in the mixture of gasoline, lightweight oil, methyl alcohol in well-beaten situation;

(4) add gradually emulsifying agent, stir about obtained the mixture of homogeneous transparent in 30 minutes.

The present invention can directly use at vehicle by replacing gasoline, can dissolve each other with No. 90, No. 93, No. 95, No. 97 gasoline arbitrary proportions of GB, has simultaneously good combustion powered performance.The present invention is except the advantage with general methanol gasoline, also having overcome general methanol gasoline chance water is the shortcoming of muddy layering, methanol gasoline of the present invention is when methanol content 10～60%, water that can solubilising 3% and not being separated, all be not separated below 3% at water-content, have good water resistance.

Embodiment

Embodiment 1: the component of Vehicular methanol petrol and mass percent thereof are: No. 90 gasoline 65% of GB, methyl alcohol 18%, lightweight oil 7%, additive 10%.

Each component and be by the mass percent of water resisting methanol gasoline total mass in the additive: lipid acid 4.5%, naphthenic acid 2%, emulsifying agent 2%, thanomin 1%, solubilizing agent 0.5%.Wherein, thanomin is monoethanolamine.

Each component of emulsifying agent and mass percent thereof are: propyl carbinol 50%, n-hexyl alcohol 30%, polyoxyethylene glycol 20%; The HLB value of the polyethers of solubilizing agent is between 12～14, and molecular weight is between 2000～3000.

Test shows, the water that the methanol gasoline of producing according to said ratio can solubilising 3% and not being separated, and its dynamic performance is suitable with 1.0～1.2 times (volume ratio) No. 90 gasoline.

Embodiment 2: the component of Vehicular methanol petrol and mass percent thereof are: No. 90 gasoline 50% of GB, methyl alcohol 32%, lightweight oil 3%, additive 15%.

Each component and be by the mass percent of water resisting methanol gasoline total mass in the additive: lipid acid 5%, naphthenic acid 4.6%, emulsifying agent 2%, thanomin 3%, solubilizing agent 0.4%.

Wherein, thanomin is that monoethanolamine, diethanolamine are 4: 1 mixture according to mass ratio; Each component of emulsifying agent and mass percent thereof are: propyl carbinol 40%, n-hexyl alcohol 30%, polyoxyethylene glycol 30%; The HLB value of the polyethers of solubilizing agent is between 12～14, and molecular weight is between 2000～3000.

Test shows, the water that the methanol gasoline of producing according to said ratio can solubilising 3% and not being separated, and its dynamic performance is suitable with 1.1～1.2 times (volume ratio) No. 90 gasoline.

Embodiment 3: the component of Vehicular methanol petrol and mass percent thereof are: No. 93 gasoline 42% of GB, methyl alcohol 48%, lightweight oil 2%, additive 8%.

Each component and be by the mass percent of water resisting methanol gasoline total mass in the additive: lipid acid 2%, naphthenic acid 2%, emulsifying agent 3.2%, thanomin 0.5%, solubilizing agent 0.3%.

Wherein, thanomin is that monoethanolamine, diethanolamine, trolamine are 3: 1: 1 mixture according to mass ratio; Emulsifying agent consists of: propyl carbinol 40%, n-hexyl alcohol 40%, polyoxyethylene glycol 20%; The HLB value of the polyethers of solubilizing agent is between 12～14, and molecular weight is between 3000～5000.

Test shows, the water that the methanol gasoline of producing according to said ratio can solubilising 3% and not being separated, and its dynamic performance is suitable with 1.1～1.2 times (volume ratio) No. 93 gasoline.

Embodiment 4: the weight percentage of Vehicular methanol petrol is: No. 93 gasoline 60% of GB, methyl alcohol 27%, lightweight oil 5%, additive 8%.

Each component and be by the mass percent of water resisting methanol gasoline total mass in the additive: lipid acid 2%, naphthenic acid 2%, emulsifying agent 2.4%, thanomin 1.5%, solubilizing agent 0.1%.

Wherein, thanomin is monoethanolamine; Emulsifying agent consists of: propyl carbinol 45%, n-hexyl alcohol 30%, polyoxyethylene glycol 25%; The HLB value of the polyethers of solubilizing agent is between 12～14, and molecular weight is between 2000～3000.

Test shows, the water that the methanol gasoline of producing according to said ratio can solubilising 3% and not being separated, and its dynamic performance is suitable with 1.0～1.2 times (volume ratio) No. 93 gasoline.

Claims (3)

1. a water resisting methanol gasoline is characterized in that its component and mass percent are: gasoline 40～68%, methyl alcohol 10～50%, lightweight oil 2～10%, additive 5～15%; Each constituent mass per-cent sum is 100%;

Wherein, gasoline is a kind of in No. 90, GB, No. 93, No. 95, No. 97 gasoline; Methyl alcohol is industrial methanol, water content＜0.1%; The density of lightweight oil is between 0.65～0.68;

Each component and the per-cent that accounts for the methanol gasoline total mass thereof are in the additive: lipid acid 2～8%, naphthenic acid 2～4%, emulsifying agent 0.4～4%, thanomin 0.5～5.0%, solubilizing agent 0.05～0.5%;

Emulsifying agent is the mixture of propyl carbinol, n-hexyl alcohol, polyoxyethylene glycol, and each component is by mass percentage: propyl carbinol 40～60%, n-hexyl alcohol 20～50%, polyoxyethylene glycol 20～40%; Each constituent mass per-cent sum is 100%;

Solubilizing agent adopts polyethers, and its HLB value is between 11～14, and molecular weight is between 2000～5000;

Thanomin comprises the mixture of any two or three arbitrary proportion in monoethanolamine, diethanolamine, trolamine and monoethanolamine, diethanolamine, the trolamine.

2. water resisting methanol gasoline as claimed in claim 1 is characterized in that replacing propyl carbinol with isopropylcarbinol.

3. the preparation method of water resisting methanol gasoline as claimed in claim 1 is characterized in that:

(1) component of each except emulsifying agent in the additive is mixed in proportion, for subsequent use;

(2) gasoline and lightweight oil are mixed in proportion, again methyl alcohol is joined in the mixture of gasoline and lightweight oil in proportion;

Each component mixture of additive that (3) will not contain emulsifying agent joins in the mixture of gasoline, lightweight oil, methyl alcohol in situation about stirring;

(4) add gradually emulsifying agent, stir about obtained the mixture of homogeneous transparent in 30 minutes.