CN111394140A - Composite diesel additive, special diesel for mining machinery and application and production method thereof - Google Patents

Composite diesel additive, special diesel for mining machinery and application and production method thereof Download PDF

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CN111394140A
CN111394140A CN202010167986.7A CN202010167986A CN111394140A CN 111394140 A CN111394140 A CN 111394140A CN 202010167986 A CN202010167986 A CN 202010167986A CN 111394140 A CN111394140 A CN 111394140A
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diesel
diesel oil
special
mining machinery
oil
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CN111394140B (en
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孟凡会
魏晓铭
薛锋
李亮
刘海涛
李忠
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Shanxi Lu'an Refined Oil Sales Co ltd
Taiyuan University of Technology
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Shanxi Lu'an Refined Oil Sales Co ltd
Taiyuan University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/18—Organic compounds containing oxygen
    • C10L1/1811—Organic compounds containing oxygen peroxides; ozonides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/18—Organic compounds containing oxygen
    • C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
    • C10L1/183—Organic compounds containing oxygen containing hydroxy groups; Salts thereof at least one hydroxy group bound to an aromatic carbon atom
    • C10L1/1832—Organic compounds containing oxygen containing hydroxy groups; Salts thereof at least one hydroxy group bound to an aromatic carbon atom mono-hydroxy
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/18—Organic compounds containing oxygen
    • C10L1/19—Esters ester radical containing compounds; ester ethers; carbonic acid esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/22—Organic compounds containing nitrogen
    • C10L1/228—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen double bond, e.g. guanidines, hydrazones, semicarbazones, imines; containing at least one carbon-to-nitrogen triple bond, e.g. nitriles
    • C10L1/2283—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen double bond, e.g. guanidines, hydrazones, semicarbazones, imines; containing at least one carbon-to-nitrogen triple bond, e.g. nitriles containing one or more carbon to nitrogen double bonds, e.g. guanidine, hydrazone, semi-carbazone, azomethine
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/22—Organic compounds containing nitrogen
    • C10L1/23—Organic compounds containing nitrogen containing at least one nitrogen-to-oxygen bond, e.g. nitro-compounds, nitrates, nitrites
    • C10L1/231—Organic compounds containing nitrogen containing at least one nitrogen-to-oxygen bond, e.g. nitro-compounds, nitrates, nitrites nitro compounds; nitrates; nitrites
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/22—Organic compounds containing nitrogen
    • C10L1/234—Macromolecular compounds
    • C10L1/238—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

The invention discloses a composite diesel additive and special diesel for mining machinery, which is prepared by adding the composite diesel additive into diesel and coal-based Fischer-Tropsch synthetic oil which are blended according to a certain proportion and further blending. The invention also discloses an application and a production method of the special diesel for mining machinery. The composite diesel additive disclosed by the invention is simple in formula, and the addition amount of the composite diesel additive is not more than 2% of the mass of diesel. The diesel oil product added with the composite diesel oil additive is water white and sixteen in colorHigh in octane number and oxidation stability, low in S content and acidity, and NO in combustion tail gasxAnd low in CO, HC and PM, and can be used as special diesel oil for mining machinery.

Description

Composite diesel additive, special diesel for mining machinery and application and production method thereof
Technical Field
The invention belongs to the technical field of engine fuels, and particularly relates to a composite diesel additive, a special diesel product containing the composite diesel additive for mining machinery, and an application and a production method of the special diesel product. The special diesel oil for mining machinery is particularly suitable for being used as special diesel oil for a coal mine underground diesel oil engine.
Background
The explosion-proof diesel engine has the advantages of high thermal efficiency, large engine power per unit mass and the like, is favored by various large enterprises and helps the rapid development of the coal mining industry in China. The underground trackless transportation equipment using the explosion-proof diesel engine as a main power source is increasingly widely applied by the remarkable advantages of good underground adaptability, safety, rapidness, flexibility, no need of towing cables, capability of meeting long-distance long-time transportation and the like, and gradually becomes main auxiliary transportation equipment under a mine. Along with the continuous development of China towards mechanization, large-scale and intellectualization, the application amount of underground trackless transportation equipment is increasing.
At present, almost all diesel engine driven vehicles are put into a well after explosion-proof modification is carried out on the diesel engine, the explosion-proof modification of air inlet and exhaust increases the on-way resistance of gas flow, reduces the oxygen/fuel ratio in a cylinder (compared with the original engine design), and ensures that fuel cannot be fully combusted, so that carbon monoxide (CO), Hydrocarbon (HC) and Nitrogen Oxide (NO) in exhaust gas are dischargedx) And solid Particles (PM) rise rapidly. The sulfur-containing compounds in these toxic and harmful gases combine with the water vapor generated by combustion in the cylinder of the diesel engine to form sulfurous acid and sulfuric acid, which greatly corrode the diesel engine device, and the metal filings and particulate pollutants generated by the corrosion of the acidic gases are mixed into the lubricating oil to form one of the compositions of the tail gas black smoke. Meanwhile, polycyclic aromatic hydrocarbon contained in diesel engine tail gas is harmful to human beingsIt has been shown that the higher the exposure to diesel exhaust, the higher the probability of lung cancer death. In addition, the concentration of toxic and harmful gases in the tail gas of the diesel engine is too high, the concentration of the harmful gases in local underground areas of a coal mine is easy to exceed the standard, great pressure is brought to underground ventilation management work, and normal operation of underground operation can be influenced in severe cases. Therefore, the method has very important significance for controlling the exhaust of the diesel engine tail gas in the underground trackless transportation equipment.
At present, in order to control the pollutant emission of the explosion-proof diesel engine, the technical measures adopted at home and abroad mainly have three aspects: firstly, the quality of the vehicle diesel oil is improved, so that low pollutant emission is realized; secondly, the combustion process or system (such as optimizing a fuel system, a supercharging and intercooling technology, an electronic control technology and the like) of the diesel engine is improved to improve the combustion process of the diesel engine, so that the formation of harmful substances is reduced as much as possible; thirdly, reasonable and efficient post-treatment (such as water washing method and reduction catalytic conversion) technology of tail gas outside the machine is adopted. Among the three technical measures, the method modifies the existing diesel oil, improves the quality of oil products, develops high-performance diesel oil more suitable for mine diesel engines, prevents the generation of pollutants from the source, is undoubtedly the most economical, convenient and effective measure, and is also the development basis of the latter two technical measures.
Disclosure of Invention
The first purpose of the invention is to provide a composite diesel additive to reduce the content of sulfur compounds and particles in the exhaust gas of diesel engines, thereby avoiding the problems of corrosion and abrasion of the sulfur compounds and particles to the parts of the diesel engines. The composite diesel additive is characterized by comprising the following components in parts by weight:
5-10 parts of component A;
1-5 of the component B;
1-3 of a component C;
wherein the component A is at least one of di-tert-butyl peroxide, tert-butyl peroxy-2-ethylhexanoate, tert-butyl peroxyoctoate, dibutyl oxalate and isooctyl nitrate; the component B is one or more of 2, 6-di-tert-butyl-p-cresol, N ' -bis (salicylidene) propylenediamine, N ' -bis (salicylidene) ethylenediamine, N ' -bis (tert-butyl) phenylenediamine and benzotriazole; the component C is one or more of vinyl acetate polymer, polymethacrylate, maleic anhydride copolymer and polyethylene-acrylate copolymer.
At present, the main approaches for reducing the content of toxic and harmful gases and the content of particulate matters in the tail gas of the diesel engine are to improve the diesel engine, perform the post-treatment of tail gas emission and improve fuel. However, the former two measures also inevitably have little effect if the quality of diesel oil cannot be improved or enhanced. Therefore, the invention provides a compound diesel additive to improve the combustion process of diesel in an engine, and fundamentally inhibits or eliminates the generation of toxic and harmful gases and particulate matters in the tail gas of diesel fuel. The compound diesel additive disclosed by the invention is simple in formula, the addition amount is not more than 2% of the mass of the diesel, and the compound diesel additive can be added into a blended diesel product through a diesel blending process without great investment on manpower, material resources and financial resources, so that the compound diesel additive is an economical, efficient and practical way for reducing the content of toxic and harmful gases and the content of particulate matters in the tail gas of a diesel engine.
The second purpose of the invention is to provide special diesel for mining machinery, which overcomes the low combustion efficiency of a mine diesel engine, and realizes the reduction of the content of toxic and harmful gases and the content of particulate matters in tail gas of the mine diesel engine, thereby reducing CO, HC and NO in tail gas discharged by the diesel engine from the sourcexAnd the content of harmful gases, the influence on the body health of underground workers and the adverse influence on the normal operation of underground operation are reduced.
The diesel oil special for mining machinery disclosed by the invention comprises the following components in percentage by mass of 3-20: 1, diesel oil and coal-based Fischer-Tropsch synthetic oil, and a proper amount of composite diesel oil additive; the diesel oil is vehicle diesel oil or common diesel oil, wherein the quality index of the vehicle diesel oil meets the VI technical requirement in GB19147-2016 vehicle diesel oil, and the quality index of the common diesel oil meets the technical requirement in GB252-2015 common diesel oil; the addition amount of the composite diesel additive is 5-20 per mill of the mass sum of the vehicle diesel and the coal-based Fischer-Tropsch synthetic oil.
In a preferred embodiment, in the above technical scheme, the cetane number of the coal-based fischer-tropsch synthetic oil ranges from 55 to 65, the oxidation stability is not greater than 1.0mg/100m L, the sulfur content is 0 to 1.0mg/kg, the acidity is 1.0 to 5.0mg koh/100m L, and the density is 750 to 840kg/m3The polycyclic aromatic hydrocarbon content is 1.0-5.0 wt%, and the kinematic viscosity is 4.0-6.0 mm2/s。
The mining machinery special diesel oil is water white transparent oily liquid, the cetane number of the mining machinery special diesel oil is not less than 50, the oxidation stability of the mining machinery special diesel oil is not more than 2.0mg/100m L, the sulfur content of the mining machinery special diesel oil is not more than 5.0mg/kg, the acidity of the mining machinery special diesel oil is not more than 6.0mg KOH/100m L, and the density range of the mining machinery special diesel oil is 815-845 kg/m3The polycyclic aromatic hydrocarbon content is not more than 5.0 wt%, and the kinematic viscosity range is 3.0-8.0 mm2And/s, the diesel engine is used for special vehicles such as coal mine underground transportation trackless rubber-tyred vehicles and the like with diesel engines as main power sources.
The third purpose of the invention is to provide application of the special diesel for mining machinery. Experimental data of a tail gas pollutant discharge test of the diesel oil special for mining machinery blended by the invention on a diesel engine show that the emission of carbon monoxide in combustion tail gas is not more than 1000 mg/(kW.h), hydrocarbon is not more than 100 mg/(kW.h), nitrogen oxide is not more than 300 mg/(kWh), and particulate pollutants are not more than 7 mg/(kWh). Therefore, the diesel oil special for mining machinery is particularly suitable for underground trackless transportation equipment of a coal mine, such as an underground transportation special vehicle of the coal mine, and a specific embodiment is the application of the diesel oil special for mining machinery as fuel oil in an underground trackless rubber-tyred vehicle of the coal mine.
The diesel oil product special for mining machinery of the invention is used for the technical fields of diesel oil engine used in other places except the coal mine underground diesel oil engine, such as transportation vehicles (including various motor vehicles and ships) using diesel oil as fuel, engineering, mines, agriculture and forestry machinery and the like using the diesel oil engine as power, and discharges pollutants of tail gas, such as CO, HC and NOXThe PM content is obviously relativeLower and therefore more efficient, clean and environmentally friendly from an environmental point of view.
The fourth purpose of the invention is to provide a production method of the special diesel oil for mining machinery, which has the specific technical scheme that the production method of the special diesel oil for mining machinery is characterized in that the diesel oil and the coal-based Fischer-Tropsch synthetic oil are respectively conveyed into blending equipment by two blending pumps according to a certain proportion, then a certain amount of composite diesel oil additive is added, and after uniform mixing, a water white transparent oily liquid product is obtained, wherein the cetane number of the product is not less than 50, the oxidation stability is not more than 2.0mg/100m L, the sulfur content is not more than 5.0mg/kg, the acidity is not more than 6.0mgKOH/100m L, and the density range is 815-845 kg/m3The polycyclic aromatic hydrocarbon content is not more than 5.0 wt%, and the kinematic viscosity range is 3.0-8.0 mm2S, no mechanical impurities. Taking the diesel oil for vehicles and the coal-based Fischer-Tropsch synthetic oil as raw oil as an example, a specific production process comprises the following steps:
1) the diesel oil for the vehicle and the coal-based Fischer-Tropsch synthetic oil are delivered to a blending pipeline according to a certain proportion by respective blending pumps, are uniformly mixed with a certain amount of composite additive prepared from components such as a cetane number improver, a corrosion inhibitor, a fluidity improver and the like, and then enter a finished product tank for storage, so that the special diesel oil product for the mining machinery of the diesel engine for the mine is obtained.
2) After the vehicle diesel oil is fed into the tank, the coal-based Fischer-Tropsch synthetic oil is delivered into the tank by a coal-based Fischer-Tropsch synthetic oil blending pump according to a certain proportion, and then a certain amount of composite additive prepared from components such as a cetane number improver, a corrosion inhibitor, a fluidity improver and the like is added, so that the qualified diesel oil product special for mining machinery is blended and applied to a mine diesel engine.
In the technical scheme, the quality index of the automotive diesel oil meets the technical requirement of VI in GB19147-2016 automotive diesel oil, the preferable cetane number range of the coal-based Fischer-Tropsch synthetic oil is 55-65, the oxidation stability is not more than 1.0mg/100m L, the sulfur content is 0-1.0 mg/kg, the acidity is 1.0-5.0 mg KOH/100m L, and the density is 750-840 kg/m3The polycyclic aromatic hydrocarbon content is 1.0-5.0 wt%, and the kinematic viscosity isIs 4.0-6.0 mm2A coal-based Fischer-Tropsch synthetic oil product per second.
Further, in any one of the above technical solutions, the blending mass ratio of the vehicle diesel oil to the coal-based fischer-tropsch synthetic oil is 3-20: 1.
further, in any one of the above technical schemes, the mass formula ratio of the A, B, C three components in the composite diesel additive is 5-10: 1-5: 1 to 3.
For example, in a specific embodiment of the invention, the main raw material adopts 0# automotive diesel oil with the quality index meeting the technical requirement of GB19147-2016 in which the technical requirement is met, and the cetane number range is 55-65, the oxidation stability is not more than 1.0mg/100m L, the sulfur content is 0-1.0 mg/kg, the acidity is 1.0-5.0 mgKOH/100m L, and the density is 750-840 kg/m3The polycyclic aromatic hydrocarbon content is 1.0-5.0 wt%, and the kinematic viscosity is 4.0-6.0 mm2According to the test of the inventor, when the coal-based Fischer-Tropsch synthetic oil is blended according to the mass ratio of 5:1, the comprehensive performance of the coal-based Fischer-Tropsch synthetic oil as a diesel engine is optimal. On the basis of the above, the inventor can achieve a more optimized level as a formulation index of a diesel oil product special for mining machinery by adding a cetane number improver of tert-butyl peroxy-2-ethylhexanoate, a corrosion inhibitor of N, N '-bis (salicylidene-propylene diamine) and a low-temperature flow modifier of ethylene-vinyl acetate copolymer in proper proportions, for example, a more specific embodiment is that the cetane number improver of tert-butyl peroxy-2-ethylhexanoate is 8 parts, the corrosion inhibitor of N, N' -bis (salicylidene-propylene diamine) is 5 parts, and the low-temperature flow modifier of ethylene-vinyl acetate copolymer is 1 part. If the main raw materials adopt quality indexes to meet the technical requirements in GB252-2015 common Diesel oilAccording to the common diesel oil and the coal-based Fischer-Tropsch synthetic oil, A, B, C three components in the composite diesel oil additive can be selected according to actual conditions, for example, the A component can also be selected as a cetane number improver matched with the performance of raw oil, and the B, C component can also be selected as a corresponding corrosion inhibitor and a corresponding low-temperature flow modifier according to the same principle, so that the composite diesel oil additive can improve the combustion process of the diesel oil in an engine on the whole, and inhibit or eliminate the generation of toxic and harmful gases and particulate matters in the tail gas of diesel oil fuel.
The diesel oil product special for mining machinery and the application and production method thereof have the following advantages:
(1) the diesel oil product special for mining machinery provided by the invention has the main components of straight-chain alkane, is low in aromatic hydrocarbon content and oxidation stability, is not easy to oxidize in the processes of production, storage and transportation, is short in molecular chain, and is good in atomization performance and ignition performance, and meanwhile, the diesel oil product special for mining machinery is high in combustion heat efficiency, low in CO and HC emission and low in PM emission. The diesel oil is particularly suitable for being used as special diesel oil for underground coal mine transportation vehicles taking diesel engines as main power sources.
(2) The diesel oil product special for mining machinery disclosed by the invention is high in cetane number, and after the diesel oil product special for mining machinery is applied to a special coal mine underground transportation vehicle, the diesel oil product special for mining machinery is low in sulfur content and acidity, so that the diesel oil product is not easy to corrode, wear and block a diesel engine component, and a diesel engine works stably and is not easy to knock.
(3) The special diesel oil product for mining machinery provided by the invention is short in production flow and simple in process, and the discharged tail gas of the obtained special diesel oil product after combustion almost does not contain aromatic hydrocarbon and sulfide, so that the special diesel oil product is more efficient, cleaner and more environment-friendly compared with the similar vehicle diesel oil product directly processed and produced by crude oil.
Detailed Description
The following provides a more detailed description of embodiments of the present invention through specific embodiments.
In the examples 1 to 5, only the raw materials of the diesel oil for vehicles and the coal-based fischer-tropsch synthetic oil are taken as examples to illustrate, the technical indexes of the adopted diesel oil for vehicles and the adopted coal-based fischer-tropsch synthetic oil are shown in table 1, and the experimental data of the tail gas pollutant discharge test of the corresponding diesel oil product special for mining machinery on a diesel engine are shown in table 2.
It should be noted that various equivalent substitutions and modifications can be made without departing from the spirit and principles of the invention, and are intended to be included within the scope of the invention.
Example 1
Conveying 0# vehicle diesel oil and coal-based Fischer-Tropsch synthetic oil to a blending pipeline through respective blending pumps according to the blending mass ratio of 5:1, uniformly mixing the 0# vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil with 14 per mill of a composite diesel oil additive of the total mass of the vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil through a static mixer, and then storing the mixture in a finished product tank to obtain the special diesel oil product for mining machinery, wherein the cetane number of the special diesel oil product is 53, the oxidation stability of the special diesel oil product is 1.9mg/100m L, the sulfur content of the special diesel oil product is 4.2mg/kg, the acidity of the special diesel oil product is 5.5mgKOH/3The polycyclic aromatic hydrocarbon mass content is 4.8 wt%, and the kinematic viscosity is 4.6mm2S, no mechanical impurities.
The composite diesel additive comprises the following components in parts by weight: 8 parts of tert-butyl peroxy-2-ethylhexanoate, 5 parts of N, N' -bis (salicylidene) propylene diamine and 1 part of ethylene-vinyl acetate copolymer.
The obtained blended oil product is subjected to an exhaust emission pollutant test on a diesel engine, and the experimental data are shown in Table 2.
Example 2
Delivering 5# vehicle diesel oil and coal-based Fischer-Tropsch synthetic oil to a blending pipeline according to the blending mass ratio of 18:1 through respective blending pumps, uniformly mixing the 5# vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil with a 12 per mill composite diesel oil additive of the total mass of the vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil through a static mixer, and then storing the mixture in a finished product tank to obtain the special diesel oil product for mining machinery, wherein the cetane number of the special diesel oil product is 52, the oxidation stability is 2.0mg/100m L, the sulfur content is 4.7mg/kg, the acidity is 4.9mgKOH/100m L, and the density is 831kg/m34.8 wt% of polycyclic aromatic hydrocarbon and 7.4mm of kinematic viscosity2S, inorganic at allMechanical impurities.
The composite diesel additive comprises the following components in parts by weight: 6 parts of tert-butyl peroctoate and dibutyl oxalate, 3 parts of 2, 6-di-tert-butyl-p-cresol and 3 parts of ethylene-vinyl acetate copolymer.
The obtained blended oil product is subjected to an exhaust emission pollutant test on a diesel engine, and the experimental data are shown in Table 2.
Example 3
Delivering the-10 # vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil to a blending pipeline according to the blending mass ratio of 4:1 through respective blending pumps, uniformly mixing the mixture with a 14 per mill composite diesel oil additive of the total mass of the vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil through a static mixer, and then storing the mixture in a finished product tank to obtain the special diesel oil product for mining machinery, wherein the special diesel oil product for mining machinery has the cetane number of 55, oxidation stability of 1.9mg/100m L, sulfur content of 4.5mg/kg, acidity of 5.7mgKOH/100m L and density of 4kg/m L34.6 wt% of polycyclic aromatic hydrocarbon and 5.4mm of kinematic viscosity2S, no mechanical impurities.
The composite diesel additive comprises the following components in parts by weight: 9 parts of dibutyl oxalate, 3 parts of N, N' -di-tert-butyl phenylenediamine and 2 parts of polymethacrylate.
The obtained blended oil product is subjected to an exhaust emission pollutant test on a diesel engine, and the experimental data are shown in Table 2.
Example 4
Delivering the-10 # vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil to a blending pipeline through respective blending pumps according to the blending mass ratio of 8:1, uniformly mixing the diesel oil and a composite diesel oil additive which is 11 per mill of the total mass of the vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil through a static mixer, and then storing the mixture in a finished product tank to obtain the special diesel oil product for mining machinery, wherein the cetane number of the special diesel oil product is 57, the oxidation stability is 1.9mg/100m L, the sulfur content is 4.5mg/kg, the acidity is 5.7mg KOH/100m L, and the density is 836kg/m L34.6 wt% of polycyclic aromatic hydrocarbon and 5.4mm of kinematic viscosity2S, no mechanical impurities.
The composite diesel additive comprises the following components in parts by weight: 8 parts of isooctyl nitrate, 1 part of 2, 6-di-tert-butyl-p-cresol and 2 parts of polyethylene-acrylate copolymer.
The obtained blended oil product is subjected to an exhaust emission pollutant test on a diesel engine, and the experimental data are shown in Table 2.
Example 5
Delivering 5# vehicle diesel oil and coal-based Fischer-Tropsch synthetic oil to a blending pipeline according to the blending mass ratio of 6:1 through respective blending pumps, uniformly mixing the 5# vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil with a composite diesel oil additive which is 10 per mill of the total mass of the vehicle diesel oil and the coal-based Fischer-Tropsch synthetic oil through a static mixer, and then storing the mixture in a finished product tank to obtain the special diesel oil product for mining machinery, wherein the cetane number of the special diesel oil product is 59, the oxidation stability is 2.0mg/100m L, the sulfur content is 4.7mg/kg, the acidity is 5.6mgKOH/100m L, and the density is 824kg/m34.9 wt% of polycyclic aromatic hydrocarbon and 4.3mm of kinematic viscosity2S, no mechanical impurities.
The composite diesel additive comprises the following components in parts by weight: 5 parts of isooctyl nitrate, 2 parts of propiotriazole and 3 parts of ethylene-vinyl acetate copolymer.
The obtained blended oil product is subjected to an exhaust emission pollutant test on a diesel engine, and the experimental data are shown in Table 2.
Comparative example 1
The specific indexes of 0# vehicle diesel oil are shown in table 1, and the experimental data of the tail gas emission pollutant test on the diesel engine are shown in table 2.
TABLE 1 technical indices of raw materials diesel oil and coal-based Fischer-Tropsch synthetic oil
Figure BDA0002408149190000101
Table 2 exhaust pollutant emissions test data
Figure BDA0002408149190000102
As is clear from Table 2, the diesel fuel products for mining machinery obtained in example 1, for example, exhaust gas pollutants CO, HC, and NO, were usedxPM emission is obviously superior to national VI standardThe reduction amplitude is respectively 66.7%, 38.5%, 50.0% and 30% in the standard limit value (GB17691-2018 pollutant emission limit value of heavy diesel vehicle and measuring method (sixth stage of China)), and the pollutants are effectively reduced.

Claims (8)

1. The composite diesel additive is characterized by comprising the following components in parts by weight:
5-10 parts of component A;
1-5 of the component B;
1-3 of a component C;
wherein the component A is at least one of di-tert-butyl peroxide, tert-butyl peroxy-2-ethylhexanoate, tert-butyl peroxyoctoate, dibutyl oxalate and isooctyl nitrate; the component B is one or more of 2, 6-di-tert-butyl-p-cresol, N ' -bis (salicylidene) propylenediamine, N ' -bis (salicylidene) ethylenediamine, N ' -bis (tert-butyl) phenylenediamine and benzotriazole; the component C is one or more of vinyl acetate polymer, polymethacrylate, maleic anhydride copolymer and polyethylene-acrylate copolymer.
2. The special diesel oil for mining machinery is characterized by comprising the following components in percentage by mass of 3-20: 1, diesel oil and coal-based Fischer-Tropsch synthetic oil and a proper amount of the composite diesel oil additive disclosed in claim 1; wherein the diesel oil is vehicle diesel oil with quality index meeting the technical requirement in VI of GB19147-2016 vehicle diesel oil or common diesel oil with quality index meeting the technical requirement in GB252-2015 common diesel oil; the addition amount of the composite diesel additive is 5-20 per mill of the mass sum of the vehicle diesel and the coal-based Fischer-Tropsch synthetic oil.
3. The mining machinery special diesel oil as claimed in claim 2, wherein the cetane number of the coal-based Fischer-Tropsch synthetic oil ranges from 55 to 65, the oxidation stability is not more than 1.0mg/100m L, the sulfur content is 0 to 1.0mg/kg, the acidity is 1.0 to 5.0mg KOH/100m L, and the density is 750 to 840kg/m3The polycyclic aromatic hydrocarbon content is 1.0-5.0 wt%, and the kinematic viscosity is 4.0-6.0 mm2/s。
4. The mining machinery special diesel oil as claimed in claim 2 or 3, wherein the mining machinery special diesel oil is water white transparent oily liquid, the cetane number of the mining machinery special diesel oil is not less than 50, the oxidation stability is not more than 2.0mg/100m L, the sulfur content is not more than 5.0mg/kg, the acidity is not more than 6.0mg KOH/100m L, and the density is 815-845 kg/m3The polycyclic aromatic hydrocarbon content is not more than 5.0 wt%, and the kinematic viscosity is 3.0-8.0 mm2/s。
5. The mining machinery specific diesel oil according to claim 4, wherein after being combusted in the diesel engine, the mining machinery specific diesel oil has a combustion tail gas with carbon monoxide emission not exceeding 1000 mg/(kW-h), hydrocarbon content not exceeding 100 mg/(kW-h), nitrogen oxide content not exceeding 300 mg/(kW-h), and particulate pollutants not exceeding 7 mg/(kW-h).
6. The application of the special diesel oil for mining machinery as defined in claim 5 as special diesel oil for special vehicles for underground transportation of coal mines.
7. The application of the special diesel oil for mining machinery as the special diesel oil for the special vehicle for underground coal mine transportation according to claim 6, wherein the special vehicle for underground coal mine transportation is a trackless rubber-tyred vehicle for underground coal mine transportation.
8. A production method of the special diesel oil for mining machinery, according to claim 4, is characterized in that the diesel oil and the coal-based Fischer-Tropsch synthetic oil are respectively mixed by two mixing pumps according to a mass ratio of 3-20: 1, then adding a composite diesel additive which is 5-20 per mill of the mass sum of the vehicle diesel and the coal-based Fischer-Tropsch synthetic oil, and uniformly mixing to obtain the special diesel product for mining machinery.
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