Vehicular oxygen-containing gasoline prepared from crude methylal and component oil and preparation method thereof

Abstract

The invention discloses vehicular oxygen-containing gasoline prepared from crude methylal and component oil and a preparation method thereof. The vehicular oxygen-containing gasoline consists of the following components in part by weight: 100 to 500 parts of crude methylal, 500 to 900 parts of component oil, 0.0005 to 0.05 part of corrosion-resistant sweller and 0.5 to 3 parts of dehydrant. The preparation method comprises the following steps of: pumping the prepared crude oxygen-containing gasoline into a universal liquid-liquid extraction tower at normal temperature and normal pressure, and spraying the dehydrant simultaneously; after the gasoline, the crude methylal and the dehydrant which pass through 10 tower plates in the flowing process from top to bottom are mixed and subjected to mass transfer for multiple times, dissolving impurity methanol and water in the dehydrant; allowing the mixture to flow into an interstage tank from an outlet of a tower bottom for sedimentation, and dividing the mixture into two layers, wherein the dehydrant and the impurity are in the lower layer, and the crude oxygen-containing gasoline prepared from the crude methylal and the component oil is in the upper layer; and pumping the crude oxygen-containing gasoline into a blending tank after filtering, and adding 0.0005 to 0.05 part of corrosion resistant sweller to obtain the vehicular oxygen-containing gasoline. The vehicular oxygen-containing gasoline can solve the problems of demixing due to easy water absorption at a low temperature, low thermal value, high oil consumption and unsuitability for long-distance transportation and long-term storage existing in methanol gasoline.

Description

technical field [0001] The invention belongs to a vehicle fuel and a preparation method thereof, in particular to a vehicle oxygen-containing gasoline prepared by utilizing crude methylal and component oils and a preparation method thereof. Background technique [0002] The applicant, Shanxi Xinyuan Coal Chemical Fuel Co., Ltd., once applied for the titles of "A vehicle fuel alcohol ether additive and its preparation method" (CN10147856) and "A low-carbon oxygen-containing component oil for vehicles and its preparation method" National patent, after continuing research, it was found that there are dozens of domestic methylal enterprises with a capacity of 5,000 tons to 100,000 tons, most of which adopt batch or semi-continuous catalytic distillation process to produce methanol with a purity of 85-90% Crude methylal with 5-15% and 0.01-2.0% impurity water is used in building materials, leather, water-based paints and sprays, and is called a universal solvent in the industry. ...

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Problems solved by technology

[0003] The present invention is to provide a vehicle oxygenated gasoline prepared by using crude methylal and component oils and its preparation method, which is used to solve the problem of easy water absorption and stratification at low temperature, low calorific value, high fuel consumption and problems in methanol gasoline. Not suitable for long-distance transportation, long-term storage problems

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