Device and method for rapidly detecting methanol, methylal or anilines in gasoline

Abstract

The invention discloses a device and method for rapidly detecting methanol, methylal or anilines in gasoline. The device comprises an upper box cover and a lower box body, wherein first fireproof sponge, a shade guide and an operation instruction are arranged in the upper box cover; reagent bottles A, B and C in the lower box body are respectively filled with a barium hydroxide powder preparation, a naphthol benzene solution and clear water, and two burettes and two test tubes are further placed in the lower box body; and barium hydroxide and the naphthol benzene solution can be utilized for detecting methanol in the gasoline, clear water can be utilized for detecting methylal or anilines in the gasoline, and a judgment can be made by observing the color change of a sample. According to the device and the method, the component of methanol, methylal or anilines in the gasoline can be qualitatively detected rapidly, the operation is simple and feasible, a result can be read according to the color change, and the device and the method have no complex technical requirement.

Description

technical field [0001] The invention relates to the technical field of qualitative detection of gasoline methanol, methylal or aniline, in particular, the invention relates to a device and method for rapidly detecting methanol, methylal or aniline in gasoline. Background technique [0002] 1. The hazards of methanol in gasoline [0003] Methanol is a colorless, volatile, flammable, and toxic liquid that is easily oxidatively dehydrogenated to formaldehyde and is not easily miscible with hydrocarbons in gasoline. Methanol is a typical neurotoxicant, which can be absorbed through the respiratory tract, gastrointestinal tract and skin, mainly damages the human nerve and visual system, and has a significant anesthetic effect. Methanol gasoline is made by adding a certain proportion of methanol and co-solvent to ordinary gasoline, and is called M5, M15, M85, etc. according to the different proportions added. [0004] After methanol is added to gasoline, there will be some new f...

AI Technical Summary

Problems solved by technology

[0004] After methanol is added to gasoline, some new features will appear: First, the fuel consumption increases. The calorific value of methanol is 19.6MJ, which is far lower than the 43.50MJ of gasoline. Therefore, after using methanol, the fuel consumption increases with the increase of the amount of methanol mixed.

Second, the water separation property is enhanced. Methanol gasoline is prone to phase separation in the presence of a small amount of water, which affects storage and normal operation of the car.

The fourth is serious corrosion. Methanol generally contains acidic substances in the production process, and the water absorption of methanol itself makes it contain a small amount of organic acids in the storage process, as well as formaldehyde and formic acid produced after methanol combustion, which will cause damage to the engine. Severe corrosion and wear

Sixth, low-temperature startability becomes poor. Since the latent heat of vaporization of methanol is 3 times higher than that of gasoline, methanol gasoline is not easy to start under low temperature conditions.

[0006] 2. The hazards of methylal in gasoline

[0008] 1. The vapor pressure is relatively large. When used in summer, it is easy to produce air resistance, which seriously affects normal use;

[0009] 2. Insufficient octane number, low calorific value, insufficient power, engine shaking, knocking, poor acceleration, and easy flameout;

[0011] 4. The distillation range of the blended gasoline is not up to the standard, especially the distillation range of the latter part is not up to standard

[0012] 3. The hazards of methylnaphthalene in gasoline

[0016] Since the octane number of N-methylaniline can reach 300, although N-methylaniline contained in gasoline has excellent anti-knock ability, it is highly toxic, has poor environmental safety, and is very harmful to the human body.

After combustion, the power performance of the engine will be weakened, carbon deposits will increase, and the engine will be seriously damaged

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