A gasoline cleaning agent and its preparation method and application

Abstract

The invention discloses a gasoline cleaning synergist, which comprises, by mass percentage, 1-5% of an energetic material, 30-40% of a cleaning dispersant, 1-5% of a catalytic combustion improver, and 50-68% of solvent oil. The invention can effectively promote the full combustion of gasoline, increase the pressure of the combustion chamber, and cooperate with the three-way catalytic device to further catalyze and decompose harmful substances in the exhaust gas by introducing energetic materials and exhaust gas purification three-way catalytic combustion improvers. It can effectively solve the problems of low engine efficiency and excessive exhaust gas caused by the poor carbon removal effect of the existing gasoline cleaning synergist, and at the same time improve fuel power and reduce engine fuel consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of gasoline detergents, and in particular relates to a gasoline detergent enhancer and a preparation method and application thereof. Background Art

[0002] my country's gasoline is mainly composed of catalytic cracking gasoline fractions, which have a relatively high content of olefins, especially diolefins, and a low content of alkylation. Therefore, it is easier to generate sediment when using domestic gasoline. Cars using substandard gasoline experience idle jitter, increased noise, increased fuel consumption, worsening emissions, and in severe cases, difficulty starting or even failure to start. The root cause is excessive engine sediment caused by substandard gasoline.

[0003] Gasoline detergents can inhibit and remove engine deposits, greatly improve starting performance, and reduce pollutant emissions to a certain extent. Adding detergents to automobile fuel is an effective and practical way to reduce the impact of deposits and reduce automobile emissions. It is also an important measure to reflect my country's policy of "first inside the engine and then outside the engine" to control automobile emission pollution.

[0004] At present, the mainstream gasoline detergents on the market still rely mainly on polyisobutylene amine, polyether amine and Mannich amine to disperse and control carbon deposits to ensure that the engine efficiency will not decrease rapidly due to the accumulation of carbon deposits, and to prevent incomplete combustion caused by the accumulation of carbon deposits and cause exhaust gas to fail to meet standards. However, in essence, the detergent only delays the deposition of carbon deposits to ensure that the engine efficiency will not decrease rapidly. Therefore, the detergent has limited effect on improving engine power and purifying and decomposing exhaust gas.

[0005] In order to effectively improve the efficiency of motor vehicle engines by adding gasoline purifiers on the basis of the inherent power of the engine, and at the same time promote the decomposition of harmful substances in exhaust gas and reduce the emission of harmful substances in motor vehicles, it is an urgent problem to be solved by technical personnel in this field to develop a new type of fuel purifier that meets environmental protection requirements, so as to achieve more energy saving and purification of exhaust gas. Summary of the invention

[0006] Purpose of the invention: The purpose of the present invention is to address the deficiencies of the prior art and to provide an energy-saving gasoline cleaning enhancer that can improve power and purify exhaust gas, as well as a preparation method and application thereof.

[0007] Technical solution: The purpose of the present invention is achieved through the following technical solution:

[0008] The invention provides a gasoline cleaning synergist, which comprises, by mass percentage, 1-5% of energetic material, 30-40% of cleaning dispersant, 1-5% of catalytic combustion improver and 50-68% of solvent oil.

[0009] At present, technicians in this field mostly choose to use means of cleaning and dispersing carbon deposits to ensure the power of the engine. There is no precedent for introducing energetic materials into gasoline cleaning and enhancing agents. The introduction of energetic materials can improve the output power of the engine to a certain extent.

[0010] Preferably, the energetic material is a polynitrogen compound. The present invention introduces an energetic material, and during the engine combustion process, the decomposition of the energetic material can effectively increase the engine pressure and promote the full combustion of gasoline, thereby increasing the engine power output and reducing fuel consumption. In addition, the full combustion of fuel can reduce carbon deposits and reduce the content of harmful substances in the exhaust gas.

[0011] Furthermore, the polynitrogen compound is a hydrazine compound, a nitro compound or a nitrogen heterocyclic compound. These three types of compounds are relatively common and easy to obtain, and from the perspective of operability, they are relatively more stable and safe, and have prospects for industrial realization.

[0012] Furthermore, the number of nitrogen atoms in the molecular formula of the polynitrogen compound is ≥ 2. The more nitrogen atoms there are, the greater the energy, the more free radicals are produced by the decomposition reaction, and the greater the pressure of gases such as N2 produced by the decomposition. When there is only one nitrogen in the molecular formula of the polynitrogen compound, the energy is too low and it is not suitable as the energetic material of the present invention.

[0013] Preferably, the detergent dispersant is prepared from one or more of polyisobutylene amine, polyether amine or Mannich amine type detergent dispersants.

[0014] Preferably, the catalytic combustion improver is a three-way catalytic combustion improver for exhaust gas purification.

[0015] Furthermore, the catalytic combustion improver is an oil-soluble rare earth compound. Rare earth metals have a certain catalytic effect on exhaust gas purification, and oil-soluble rare earth can be well dispersed in the cleaning synergist.

[0016] Furthermore, the oil-soluble rare earth compound includes but is not limited to cerium isooctanoate or lanthanum isooctanoate.

[0017] Researchers have proposed using rare earths to prepare or modify automobile exhaust purification catalysts, but there is no application of directly adding rare earths into gasoline cleaning enhancers in the field. The present invention introduces trace rare earth metal elements to cooperate with the catalyst in the three-way catalytic converter to achieve better exhaust purification.

[0018] The present invention also provides a method for preparing the gasoline detergent and synergist, comprising the following steps:

[0019] Add energetic materials, detergent dispersant, catalytic combustion improver and solvent oil into a stirring kettle in proportion, stir and mix evenly, and filter with a filter screen of ≥1000 mesh to obtain a clear and transparent gasoline detergent enhancer product.

[0020] The gasoline cleaning synergist prepared by the present invention can be used as a gasoline additive, with an addition amount of 200-1000ppm, which can improve gasoline combustion power and effectively reduce pollutant emissions in engine tail gas.

[0021] Beneficial effects:

[0022] The present invention creatively introduces energetic materials. During the engine combustion process, the decomposition of energetic materials can instantly generate a large number of free radicals, which can effectively promote the full combustion of gasoline. At the same time, the gases such as N2 generated by the decomposition can increase the engine pressure, essentially increasing the engine power output, thereby reducing fuel consumption. The full combustion of fuel can also reduce the generation of carbon deposits and reduce the content of harmful substances in the exhaust gas. In addition, the present invention introduces a catalytic combustion improver, which enters the three-way catalytic converter along with the exhaust gas. The trace rare earth metal elements cooperate with the catalyst in the three-way catalytic converter to achieve a better exhaust gas purification and decomposition effect, thereby further reducing the content of exhaust gas pollutants. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail below through specific embodiments, but the protection scope of the present invention is not limited to the embodiments.

[0024] Main ingredients:

[0025] Polyetheramine: Huntsman M1000

[0026] Polyisobutyleneamine: BASF 3866CN

[0027] Mannich amine: Afton 6581C (this product contains carrier oil nonylphenol polyoxypropylene ether)

[0028] Example 1

[0029] A gasoline detergent enhancer, comprising the following components:

[0030] Energetic materials: 5g of unsymmetrical dimethylhydrazine;

[0031] Detergent dispersant: 30g, including 5g polyetheramine, 15g polyisobutyleneamine, and 10g base oil 500SN as carrier oil. Polyetheramine, polyisobutyleneamine, and base oil 500SN are all commercially available products;

[0032] Catalytic combustion improver: cerium isooctanoate 5g;

[0033] Aromatic solvent oil 1500#: 60g.

[0034] The preparation process is as follows: solvent oil, energetic material, detergent dispersant, and catalytic combustion improver are added into the oil blending tank in sequence according to mass ratio, and then filtered with a 1000-mesh filter to obtain a clear and transparent gasoline detergent enhancer.

[0035] Example 2

[0036] A gasoline detergent enhancer, comprising the following components:

[0037] Energetic materials: trinitroxylene 3g;

[0038] Detergent dispersant: 40g, including 10g polyetheramine, 25g polyisobutyleneamine, and 5g base oil 500SN as carrier oil. Polyetheramine, polyisobutyleneamine, and base oil 500SN are all commercially available products;

[0039] Catalytic combustion improver: cerium isooctanoate 3g;

[0040] Aromatic solvent oil 1500#: 54g.

[0041] The preparation process is as follows: solvent oil, energetic material, detergent dispersant, and catalytic combustion improver are added into the oil blending tank in sequence according to mass ratio, and then filtered with a 1000-mesh filter to obtain a clear and transparent gasoline detergent enhancer.

[0042] Example 3

[0043] A gasoline detergent enhancer, comprising the following components:

[0044] Energetic materials: phthaloyl hydrazide 1g;

[0045] Detergent dispersant: 30g, including 5g polyetheramine and 25g Mannich amine. Both polyetheramine and Mannich amine are commercially available products;

[0046] Catalytic combustion improver: lanthanum isooctanoate 1g;

[0047] Aromatic solvent oil 1500#: 68g.

[0048] The preparation process is as follows: solvent oil, energetic material, detergent dispersant, and catalytic combustion improver are added into the oil blending tank in sequence according to mass ratio, and then filtered with a 1000-mesh filter to obtain a clear and transparent gasoline detergent enhancer.

[0049] Example 4

[0050] A gasoline detergent enhancer, comprising the following components:

[0051] Energetic materials: 1,4-dinitroimidazole 5g;

[0052] Detergent dispersant: 30g, including 5g polyetheramine and 25g Mannich amine. Both polyetheramine and Mannich amine are commercially available products;

[0053] Catalytic combustion improver: lanthanum isooctanoate 1g;

[0054] Aromatic solvent oil 1500#: 64g.

[0055] The preparation process is as follows: solvent oil, energetic material, detergent dispersant, and catalytic combustion improver are added into the oil blending tank in sequence according to mass ratio, and then filtered with a 1000-mesh filter to obtain a clear and transparent gasoline detergent enhancer.

[0056] Example 5

[0057] A gasoline detergent enhancer, comprising the following components:

[0058] Energetic materials: 1,4-dinitroimidazole 1g;

[0059] Detergent dispersant: 40g, including 15g polyetheramine, 20g polyisobutyleneamine, and 5g base oil 500SN as carrier oil. Polyetheramine, polyisobutyleneamine, and base oil 500SN are all commercially available products;

[0060] Catalytic combustion improver: cerium isooctanoate 5g;

[0061] Aromatic solvent oil 1500#: 54g.

[0062] The preparation process is as follows: solvent oil, energetic material, detergent dispersant, and catalytic combustion improver are added into the oil blending tank in sequence according to mass ratio, and then filtered with a 1000-mesh filter to obtain a clear and transparent gasoline detergent enhancer.

[0063] Comparative Example 1

[0064] On the basis of Example 1, the energetic material was removed and solvent oil 1500# was used to replenish the mixture to the same total mass.

[0065] Comparative Example 2

[0066] On the basis of Example 1, the catalytic combustion improver was removed and solvent oil 1500# was used to replenish the same total mass.

[0067] Comparative Example 3

[0068] On the basis of Example 1, the energetic material and the catalytic combustion promoter were removed, and only the cleaning dispersant was added, and solvent oil 1500# was used to supplement the mixture to the same total mass.

[0069] The gasoline detergent synergist prepared in Examples 1-5 was tested for quality indicators, and the test results are shown in Table 1:

[0070] Table 1 Quality index test results

[0071]

[0072] Application Examples

[0073] The evaluation and comparison are based on the fuel consumption at a constant speed of 100 kilometers per hour at high speed and the exhaust gas test at idling state.

[0074] Before refueling, 500 mL / m2 of the gasoline cleaning enhancer prepared in Examples 1-5 and Comparative Examples 1-3 was added to the Santana 2021 automatic comfort sedan (fuel tank capacity of about 50 L). 3 , and then fill up with 92# gasoline. Drive at a constant speed of 100km / h on the highway to compare the fuel consumption per 100 kilometers. According to the "Measurement of Exhaust Pollutants from Gasoline Vehicles - Idle Method" GB / T 3845-9, test the exhaust pollutants. The test results are shown in Table 2:

[0075] Table 2 Test results

[0076]

[0077] The test results show that after adding the gasoline cleaning synergist of the present invention, the emissions of HC, CO and NOx in the idle state are reduced by 5.2-19.2%, 7.1-14.4% and 5.9-11.4% compared with the blank, and the emissions of HC, CO and NOx in the high idle state are reduced by 36.0-39.0%, 7.7-15.1% and 36.8-40.1% respectively compared with the blank. The driving experiment verifies that the fuel saving rate is reduced by 6.1-12.1%.

[0078] The introduction of energetic materials can effectively reduce fuel consumption and reduce the emission of HC, CO and NOx in tail gas; the introduction of catalytic combustion improvers can effectively reduce the emission of HC, CO and NOx in tail gas. After adding the gasoline cleaning synergist of the present invention, fuel consumption and the emission of HC, CO and NOx in tail gas can be further reduced on the basis of adding the gasoline cleaning agent.

[0079] In summary, it is shown that the gasoline detergent enhancer of the present invention has obvious environmental protection and fuel-saving effects, and can be applied to 92# gasoline or higher standard gasoline.

[0080] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A gasoline detergent synergist, characterized in that: In terms of mass percentage, it includes: energetic material 1-5%, detergent dispersant 30-40%, catalytic combustion improver 1-5%, solvent oil 50-68%; The energetic material is a polynitrogen compound, the polynitrogen compound is a hydrazine compound, a nitro compound or a nitrogen heterocyclic compound, and the number of nitrogen atoms in the molecular formula of the polynitrogen compound is ≥2; The detergent dispersant is prepared by mixing one or more of polyisobutylene amine, polyether amine or Mannich amine type detergent dispersants; the detergent dispersant contains carrier oil; The catalytic combustion improver is a three-way catalytic combustion improver for tail gas purification, and the catalytic combustion improver is an oil-soluble rare earth compound; the oil-soluble rare earth compound includes cerium isooctanoate or lanthanum isooctanoate; The solvent oil is aromatic solvent oil.

2. The method for preparing a gasoline detergent synergist according to claim 1, characterized in that: The following steps are involved: Add energetic materials, detergent dispersant, catalytic combustion improver and solvent oil into a stirring kettle in proportion, stir and mix evenly, and filter with a filter screen of ≥1000 mesh to obtain a clear and transparent gasoline detergent enhancer product.

3. Use of the gasoline detergent synergist according to claim 1 in gasoline additives.

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