Energy-saving and pollution-reducing composite diesel purification synergist and preparation method thereof

Abstract

The invention belongs to the technical field of diesel additives, and particularly relates to an energy-saving and pollution-reducing composite diesel purification synergist and a preparation method thereof. The energy-saving and pollution-reducing composite diesel cleaning synergist is prepared from the following components in parts by weight: 15 to 20 parts of dialkyl polyene polyamine, 35 to 38 parts of polyether amine, 10 to 15 parts of oil-soluble polyether, 10 to 15 parts of an anti-friction agent, 10 to 15 parts of polyethylene polyamine, 4 to 6 parts of nitromethane, 20 to 25 parts of polyoxymethylene dimethyl ether, 5 to 12 parts of dimethyl carbonate and 12 to 15 parts of solvent oil. The diesel oil purification synergist has the advantages that the diesel oil purification synergist is added into diesel oil, and pollutant emission is reduced, fuel oil consumption is reduced, and the power effect is improved through the technical ways of optimizing the combustion process of a diesel engine, improving the circulation isovolumetric degree and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of diesel additives, and in particular relates to an energy-saving and pollution-reducing composite diesel detergent synergist and a preparation method thereof. Background Art

[0002] Among the vehicles powered by diesel, heavy-duty diesel trucks are the main ones. The main problem of heavy-duty diesel trucks is the large amount of pollution, including PM2.5, PM10 and NO. X Mainly, these pollutants pose a great threat to air quality and human health; secondly, the direct cause of excessive emissions from heavy-duty diesel vehicles is closely related to the quality of diesel, which can lead to adverse factors such as incomplete diesel combustion and a sudden increase in the local temperature of the engine cylinder wall. Summary of the Invention

[0003] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide an energy-saving and pollution-reducing composite diesel detergent synergist and a preparation method thereof, so as to solve the practical problems of incomplete diesel combustion and excessively high pollution emissions from heavy-duty diesel vehicles.

[0004] In order to achieve the above objectives, the technical solutions adopted are:

[0005] The present invention provides a composite diesel cleaning synergist for energy saving and pollution reduction, comprising the following components in parts by weight:

[0006] 15-20 parts of dialkyl polyene polyamine, 35-38 parts of polyether amine, 10-15 parts of oil-soluble polyether, 10-15 parts of friction reducer, 10-15 parts of polyethylene polyamine, 4-6 parts of nitromethane, 20-25 parts of polyoxyethylene dimethyl ether, 5-12 parts of dimethyl carbonate, and 12-15 parts of solvent oil.

[0007] Preferably, the oil-soluble polyether is polypropylene oxide; the wear reducer is diesel anti-wear agent RT1601; and the solvent oil is one or both of 120# and 200# solvent oils.

[0008] The present invention also provides a method for preparing the energy-saving and pollution-reducing composite diesel detergent synergist, comprising the following steps:

[0009] Step 1: Preparation of raw materials, prepare various materials according to weight;

[0010] Step 2: Mixing and stirring: add the above components in parts by weight into the reactor in sequence, and turn on the stirring device to mix;

[0011] Step 3: Heating and reaction: Turn on the heating device and start the reaction after the temperature of the reactor rises.

[0012] Step 4: Quality inspection, conduct quality inspection on the additives after reaction;

[0013] Step 5: Packaging and storage. After passing the quality inspection, the additives are packaged into sealed containers, labeled, and finally stacked for storage.

[0014] 4. The method for preparing the energy-saving and pollution-reducing composite diesel detergent synergist according to claim 3 is characterized in that the mixing and stirring are carried out at room temperature (20±5°C) for 20 minutes and the reactor speed is 1000-1500 revolutions per minute.

[0015] Preferably, the heating and reaction temperature reaches 30°C-45°C, and the reaction is carried out at a temperature of 30°C-45°C for 20-25 minutes.

[0016] More preferably, the quality inspection includes appearance, flash point, pour point, nitrogen content, density, moisture, copper corrosion, demulsification, PM and NO X Emission improvement rate and fuel economy;

[0017] Preferably, the PM and NO X The method for testing emission improvement rate and fuel economy includes the following steps:

[0018] Step 1: Preparation before the test: engine, instruments and reagents;

[0019] Engine: Diesel engine without aftertreatment device

[0020] Instruments and equipment: dynamometer, nitrogen oxides (NO X ) analyzer, and a particulate matter (PM) measurement and sampling system that complies with the requirements of Annex CB.4 of GB 17691-2018 "Emission Limits and Measurement Methods of Pollutants from Heavy-Duty Diesel Vehicles".

[0021] Reagents: accelerator zinc neodecanoate, basic test diesel for vehicles

[0022] Step 2: Test Procedure:

[0023]

[0024] Preferably, the accelerator zinc neodecanoate (CAS: 27253-29-8) is a standard reagent (chemically pure), and is added in a ratio such that the Zn content in the basic test diesel for vehicles is 1 mg / kg.

[0025] Preferably, the cycle condition A:

[0026]

[0027]

[0028] Described cycle condition B:

[0029]

[0030] The present invention also provides a method for using the energy-saving and pollution-reducing composite diesel detergent synergist, which comprises uniformly dispersing the energy-saving and pollution-reducing composite diesel detergent synergist into diesel according to a mass ratio of energy-saving and pollution-reducing composite diesel detergent synergist: diesel = 1:1000-2000.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] This invention provides a composite diesel cleaning synergist with energy-saving and pollution-reducing functions and a preparation method thereof. The technical principle is to use amino compounds and ether compounds prepared with special formulas that do not contain metal components and ash as the main components. Its molecular structure is mainly composed of multiple functional groups. Under the conditions of high pressure and high temperature in the engine, a large number of free radicals are generated during the combustion of fuel, triggering a chain of molecular chain reactions, optimizing the combustion process, and effectively achieving improvements in fuel economy, power, pollutant control and other indicators. The core technology is to achieve different optimization effects through different functional groups, effectively increasing the combustion heat per unit volume, which can improve combustion efficiency, while reducing fuel consumption and reducing HC, CO, and NO X and PM, among other four pollutant emissions.

[0033] First: The technical solution of the present invention can simultaneously reduce the main gas pollutants PM and NO in diesel vehicles X Emissions, PM+NO X The comprehensive emission improvement rate reached more than 20.10%, and the PM and NO X There was no increase in emissions of any individual gas pollutant;

[0034] Second: By optimizing the group ratio, diesel combustion efficiency can be significantly improved, improving fuel economy, and the fuel saving rate can reach more than 1.6%;

[0035] Third: The diesel detergent synergist of the present invention is chemically neutral and will not cause any acid or alkali corrosion to the diesel engine. It can not only reduce the friction loss in the cylinder, thereby improving the lubrication performance of the diesel, but also extend the service life of the engine;

[0036] Fourth, the diesel detergent synergist of the present invention does not affect the physical and chemical properties of diesel. Evenly dispersing the diesel detergent synergist into diesel at a ratio of 1:1000-2000 does not change the diesel's oxidation stability, sulfur content, acidity, 10% carbon residue, ash content, copper corrosion, water content, polycyclic aromatic hydrocarbon content, density, kinematic viscosity, pour point, cold filter plugging point, flash point, fatty acid methyl ester content, and distillation range.

[0037] Fifth: The diesel cleaning synergist of the present invention contains a series of polymer organic substances, does not contain harmful components such as metals, phosphorus, and chlorine, contains a dispersant, and has good "mutual solubility" and "corrosion resistance";

[0038] Sixth: The diesel detergent synergist of the present invention can improve fuel atomization and mixing with air by adding dialkyl polyene polyamine, thereby improving fuel utilization;

[0039] Seventh: The diesel detergent synergist of this invention, by adding polyetheramine, not only reduces carbon particle generation but also increases combustion velocity and instantaneous heat generation. Practical applications demonstrate enhanced vehicle dynamics, reduced fuel consumption, and reduced gaseous pollutant emissions. The addition of dimethyl carbonate, due to its excellent lubricity and dispersibility, can improve the lubrication performance of internal combustion engines and address the low-temperature sludge problem in diesel engines.

[0040] Eighth: The diesel detergent synergist of the present invention, by adding oil-soluble polyether, can effectively control the generation of sludge, carbon deposits and soot in the engine, improve the hydrolysis stability of diesel, and synergistically cooperate with other anti-wear agents and rust inhibitors to achieve good corrosion inhibition and friction control performance;

[0041] Ninth: The diesel detergent synergist of the present invention can improve the demulsification and lubricity of diesel by adding polyethylene polyamine;

[0042] Tenth: The diesel detergent synergist of the present invention can increase the oxygen content and improve the engine combustion efficiency and mean effective pressure by adding nitromethane;

[0043] Eleventh: The diesel detergent synergist of the present invention, by adding polyoxyethylene dimethyl ether, can increase the oxygen content of diesel, improve the cetane number of diesel, improve the cold start performance of the engine, and achieve the technical purpose of promoting combustion and reducing smoke. DETAILED DESCRIPTION

[0044] The present invention is described below with reference to examples, which are only used to explain the present invention and are not used to limit the scope of the present invention.

[0045] Example 1: 20g of dialkyl polyene polyamine, 38g of polyetheramine, 13g of oil-soluble polyether, 12g of friction reducer, 11g of polyethylene polyamine, 5g of nitromethane, 25g of polyoxyethylene dimethyl ether, 10g of dimethyl carbonate, and 15g of 120# solvent oil.

[0046] The above compounds were added to the reactor in order by mass and mixed, stirred at room temperature (20±5°C) for 20 minutes, the reactor speed was 1000-1500 rpm, and reacted at 40°C for 20-25 minutes to prepare sample B.

[0047] Example 2: 15g of dialkyl polyene polyamine, 35g of polyetheramine, 13g of oil-soluble polyether, 12g of friction reducer, 11g of polyethylene polyamine, 5g of nitromethane, 20g of polyoxyethylene dimethyl ether, 10g of dimethyl carbonate, and 15g of 200# solvent oil.

[0048] The above compounds were added to the reactor in order by mass and mixed, stirred at room temperature (20±5°C) for 20 minutes, the reactor speed was 1000-1500 rpm, and reacted at 40°C for 20-25 minutes to prepare sample C.

[0049] Example 3: 18g of dialkyl polyene polyamine, 37g of polyetheramine, 13g of oil-soluble polyether, 12g of friction reducer, 11g of polyethylene polyamine, 5g of nitromethane, 23g of polyoxyethylene dimethyl ether, 10g of dimethyl carbonate, 8g of 120# solvent oil, and 7g of 200# solvent oil.

[0050] The above compounds were added to the reactor in order by mass and mixed, stirred at room temperature (20±5°C) for 20 minutes, the reactor speed was 1000-1500 rpm, and reacted at 40°C for 20-25 minutes to prepare sample D.

[0051] Comparative Example 1: 15g oil-soluble polyether, 15g friction reducer, 15g polyethylene polyamine, 6g nitromethane, 12g dimethyl carbonate, and 15g 120# solvent oil.

[0052] The above compounds were added to the reactor in order by mass and mixed, stirred at room temperature (20±5°C) for 20 minutes, the reactor speed was 1000-1500 rpm, and reacted at 40°C for 20-25 minutes to prepare sample E.

[0053] The 0# automotive basic test diesel sample was labeled A; the mixed oil samples to which the diesel detergent synergist prepared in Examples 1 to 3 and Comparative Example 1 was added were labeled B, C, D, and E, respectively; and then, without an aftertreatment device, the engine was tested in accordance with GB / T 18297-2001 "Automotive Engine Performance Test Methods." The changes in engine pollutant emissions and fuel economy were measured before and after the use of the diesel detergent synergist according to the test procedures. The test data are shown in the following table:

[0054] Table 1. Comparison of PM and NOX emissions and fuel economy of Plan B

[0055]

[0056] Table 2. Comparison of PM and NOX emissions and fuel economy of Scheme C

[0057]

[0058]

[0059] Table 3. PM and NO in D scheme X Emissions and fuel economy comparison

[0060]

[0061] Table 4. PM and NO in Scheme E X Emissions and fuel economy comparison

[0062]

[0063]

[0064] From the test results, it can be seen that after adding the diesel cleaning synergist of the present invention, the main gas pollutants PM and NO X Emissions have been reduced to varying degrees, with the comprehensive pollutant reduction rate ranging from 20.10% to 27.83%; in terms of fuel economy, the fuel saving rate is between 1.60% and 1.88%, which has important practical value.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A composite diesel cleaning synergist for energy saving and pollution reduction, characterized in that: Contains the following components in parts by weight: 15-20 parts of dialkyl polyene polyamine, 35-38 parts of polyether amine, 10-15 parts of oil-soluble polyether, 10-15 parts of friction reducer, 10-15 parts of polyethylene polyamine, 4-6 parts of nitromethane, 20-25 parts of polyoxyethylene dimethyl ether, 5-12 parts of dimethyl carbonate, and 12-15 parts of solvent oil.

2. The energy-saving and pollution-reducing composite diesel detergent synergist according to claim 1, wherein the oil-soluble polyether is polypropylene oxide; the wear reducer is the diesel antiwear agent RT1601; and the solvent oil is one or both of 120# and 200# solvent oil.

3. A method for preparing the energy-saving and pollution-reducing composite diesel detergent synergist according to claim 1 or 2, characterized in that: The steps include: Step 1: Preparation of raw materials, prepare various materials according to weight; Step 2: Mixing and stirring: add the above components in parts by weight into the reactor in sequence, and turn on the stirring device to mix; Step 3: Heating and reaction: Turn on the heating device and start the reaction after the temperature of the reactor rises; Step 4: Quality inspection, conduct quality inspection on the additives after reaction; Step 5: Packaging and storage. After passing the quality inspection, the additives are packaged into sealed containers, labeled, and finally stacked for storage.

4. The method for preparing the energy-saving and pollution-reducing composite diesel detergent synergist according to claim 3, characterized in that: The mixing and stirring were carried out at room temperature (20±5° C.) for 20 minutes, and the rotation speed of the reactor was 1000-1500 revolutions per minute.

5. The method for preparing the energy-saving and pollution-reducing composite diesel detergent synergist according to claim 4, characterized in that: The heating and reaction temperature reaches 30° C.-45° C., and the reaction is carried out at a temperature of 30° C.-45° C. for 20-25 minutes.

6. The method for preparing the energy-saving and pollution-reducing composite diesel detergent synergist according to claim 3, characterized in that: The quality inspection includes appearance, flash point, pour point, nitrogen content, density, moisture, copper corrosion, demulsification, PM and NO X Emission improvement rate and fuel economy.

7. A method for using the energy-saving and pollution-reducing composite diesel detergent synergist as claimed in claim 1, characterized in that: The energy-saving and pollution-reducing composite diesel detergent synergist is evenly dispersed into the diesel according to the mass ratio of the energy-saving and pollution-reducing composite diesel detergent synergist: diesel = 1:1000-2000.

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