CN1236022C - Clean methanol gasoline for vehicle - Google Patents

Abstract

The present invention provides a formula of vehicle gasoline containing methyl alcohol and a preparation process thereof. The vehicle gasoline comprises methanol, commercial gasoline, acetone, a preservative agent, a dispersing agent and an antioxidant. In the preparation process, a highly-shearing tubular emulsifying machine is utilized to emulsify a mixture. The vehicle gasoline has the advantages of no delamination, no corrosion, no air resistance, good anti-knock quality, etc.

Description

Clean methanol gasoline for vehicle

The present invention relates to a kind of prescription and the technology of producing novel automobile gasoline in petrochemical technology field.

Because the main source of motor spirit is subjected to resource limit, and problem of environmental pollution is arranged always for to refine from oil, closely during the last ten years, people seek gasoline substitutes always, and methyl alcohol is as the preferred raw materials of gasoline substitutes, and its physico-chemical property is approaching with gasoline.In recent years, use methyl alcohol as a kind of component, compound method and the technology of admixing mutually with regular gasoline has had certain progress by a certain percentage, as " Chinese patent CN1077734A, high-octane lead-free synthetic gasoline and preparation method " disclose and utilized methyl alcohol, cracked oil, prescription and method that commercial gasoline and the emulsifying agent that mixed by tween and Si Ben etc. are mixed and form gasoline, " Chinese patent CN1054262A synthetic gasoline " discloses a kind of methyl alcohol, gasoline, method and technology that component such as solvent oil and dimethylbenzene is mixed and forms gasoline, " Chinese patent CN1203937A methyl alcohol vehicle fuel that has no need of modifying engine ", disclose a kind of by multi-effect composite additive, the vehicle fuel that methyl alcohol is formulated, methanol content can reach 96% (but multi-effect composite additive why material is unexposed).199703 phases of petroleum journal (refining of petroleum) have been delivered " methylcarbonate is as the evaluation of gasoline dope ", and 1998.01 phases of Shandong petrochemical complex have been delivered " production method of low-sulfur high-octane rating motor spirit " or the like.

Prior art is increasing methyl alcohol blending ratio, is not changing engine structure, on starting easily, the target such as pollutions is little, power is big certain progress is arranged all, but also has many shortcomings or deficiency, is mainly: one, demixing phenomenon is arranged when now mixing with commercial gasoline; Two, life-time service has corrosive nature to engine metal spare, rubber seal; Three, there is the vent plug phenomenon to produce in the use.

The objective of the invention is to prepare a kind of to engine do not have corrosion or low burn into long-time place not stratified, with the synthetic gasoline that now can endlessly mix, do not produce the vent plug phenomenon with marketable gasolines.This gasoline can use separately, also can with use with other gasoline of label, use the engine of this synthetic gasoline also to need not naturally to change.

For reaching this purpose, the technical scheme that the present invention takes is:

One, adds alkaline sanitas dialkyl group-2,6 generation phosphoric acid zinc salt, to reduce the corrosion of methyl alcohol itself and products of combustion to metalwork, rubber parts.

Two, add the dispersion agent calcium sulphonate, strengthen the affine dissemination between different material.

Three, add oxidation inhibitor 2,6-di-t-butyl mixed phenol prevents oxygenizement.

Four, in blending process, use high-shear tubular type mulser, make it thorough mixing.

Basic recipe is weight percentage:

Methyl alcohol 40-60%, commercial gasoline 20-50%, acetone 4-8%, dialkyl group-2,6 generation phosphoric acid zinc salt 0.1-1%, calcium sulphonate 0.1%-1%, 2.6-di-t-butyl mixed phenol 0.5-2%.

Blending process is: earlier methyl alcohol is mixed with commercial gasoline, add dispersion agent again and stirred 1.5-2 hour, add sanitas and oxidation inhibitor, use the high-shear emulsion machine emulsification more than 2 hours then, add acetone then, filter twice, get product with continuous filter.

Adopt the resulting different model mixing oil of above technical scheme, product detects through Jiangsu Province's quality product inspection center, every physical and chemical index all reaches or is better than GB 90#, 93# gasoline, and through test run, its homogeneity, stability, anti-vent plug, erosion resistance etc. all show well.

Below be several embodiments of the present invention:

Embodiment one

Methyl alcohol 40% commercial gasoline 54%

Acetone 4.5% dialkyl group-2,6 generation phosphoric acid zinc salt 0.1%

Calcium sulphonate 0.9% 2,6-di-t-butyl mixed phenol 0.5%

Embodiment two

Methyl alcohol 55% commercial gasoline 36%

Acetone 7% dialkyl group-2,6 generation phosphoric acid zinc salt 0.5%

Calcium sulphonate 0.2% 2,6-di-t-butyl mixed phenol 1.3%

Embodiment three

Methyl alcohol 60% commercial gasoline 30%

Acetone 6.8% dialkyl group-2,6 generation phosphoric acid zinc salt 0.8%,

Calcium sulphonate 0.4% 2,6-di-t-butyl mixed phenol 2%.

Claims (2)

1. a synthetic gasoline is characterized in that, the component of preparing this gasoline has each component concentration (weight %) as follows:

Methyl alcohol 40%-60%

Commercial gasoline 30%-60%

Acetone 4%-8%

Zinc dialkyl dithiophosphate 0.1%-1%

Calcium sulphonate 0.1%-1% and

2,6-di-t-butyl mixed phenol 0.5%-2%

2. the preparation method of the synthetic gasoline of claim 1 is characterized in that:

By metering, earlier methyl alcohol and commercial gasoline are mixed, add calcium sulphonate again, stirred 1.5～2 hours, add zinc dialkyl dithiophosphate and 2 then, 6-di-t-butyl mixed phenol uses the high-shear emulsion machine emulsification more than 2 hours, add acetone again and mix, filter 2 times with continuous filter at last.