A composite additive for producing National ⅳ Standard 93# gasoline using refinery base oil

Abstract

The invention provides a vehicle fuel oil composite additive which comprises the following components in percentage by mass: 35-80% of octane number enhancer, 15-38% of combustion improver and 5-27% of assistant. The octane number enhancer is composed of ethanol, tert-butyl acetate, methyl tert-butyl ether, cyclopentane and polymethoxy dimethyl ether in a mass ratio of 40:10:40:7:3; the combustion improver is composed of diisopropyl ether, dimethyl carbonate, nitromethane, acetone and glycol dimethyl ether in a mass ratio of 45:30:10:5:10; and the assistant is composed of isoamyl alcohol, isopropanol, 2-ethylhexanol, dipolylinoleic acid, metal passivator and antioxidant in a mass ratio of 20:60:8:10:0.4:1.6.When being applied to vehicle fuel oil, the composite additive can reduce or eliminate knocking, enable the fuel oil to have high octane number performance and ensure the fuel in the cylinder to be combusted completely, so that both the exhaust emission and fuel consumption are lowered, and the power and torsion of the engine are enhanced.

Description

technical field [0001] The invention relates to a fuel additive, in particular to a compound additive for vehicle fuel oil and its application. Background technique [0002] According to the national IV standard GB 17930-2011 / XG1-2012 "Motor Gasoline" phase IV standard, the sulfur content is not more than 50mg / kg, the manganese content is not more than 0.008g / L, and the olefin content is not more than 28% (v / v) And other technical requirements, in order to upgrade the quality of gasoline, refineries need to adopt hydrogenation and other refining processes to produce low-sulfur gasoline characterized by low sulfur content and low olefin content. The negative factors appear to be that the cost will increase by about 200-400 yuan / ton, and the research octane number of gasoline itself will lose about 5 units. Most of the local oil refining enterprises focus on rough processing and refining, which consumes a lot of energy, and their own production costs are high, and the burden ...

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Problems solved by technology

Li Yinghua's patent CN02132806 "Gasoline Composite Additives" added a rare earth bimetallic active complex made of four oxides such as aluminum oxide, cerium oxide, yttrium oxide, and magnesium oxide under the action of concentrated sulfuric acid, increasing gasoline The grade and the power of the car engine, but long-term use of metal-containing additives will not only cause damage to the engine, but also the overall cost of additives containing rare earth elements is higher

Zhou Sheng and Song Yingjin's patent CN200510092960 "Formula and Preparation Method of Clean Gasoline Composite Additives" is effective for the detergency of coke deposits and colloids in fuel injectors, but does not mention the improvement of anti-knock performance of gasoline

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