A method of preparing a diesel composition and a diesel composition

Abstract

The present disclosure relates to a method for preparing a diesel composition and the diesel composition, the method for preparing the diesel composition first uses monosaccharides or biomass to prepare a biomass-based component oil, and then the prepared biomass-based component oil is mixed with diesel and additives to prepare the diesel composition. Since the prepared biomass-based component oil has more excellent thermal stability, lower sulfur content and higher cetane number, the diesel composition prepared by the present disclosure has better thermal stability, lower sulfur content and higher cetane number.

Description

Technical Field

[0001] This disclosure relates to the field of petrochemical technology, and more specifically, to a method for preparing a diesel composition and the diesel composition thereof. Background Technology

[0002] Diesel fuel is an energy fuel used in compression-ignition engines, and it is mainly divided into two categories: distillate diesel and residual diesel. Distillate diesel is further divided into light diesel and automotive diesel. The former is suitable for internal combustion engines in cars, automobiles, tractors, locomotives, construction machinery, ships, and generator sets, while the latter is mainly used in compression-ignition diesel engines in automobiles. Residual diesel is currently mainly used in high-power, low-speed marine diesel engines.

[0003] With continuous innovation in production technology, increasingly stringent requirements have been placed on various properties of diesel fuel. However, the thermal stability of existing diesel fuel needs improvement, and it still suffers from problems such as high sulfur content and low cetane number. Summary of the Invention

[0004] The purpose of this disclosure is to address the problems of insufficient thermal stability, high sulfur content, and low cetane number in existing diesel fuels, and to provide a method for preparing a diesel fuel composition and the diesel fuel composition thereof.

[0005] To achieve the above objectives, this disclosure provides a method for preparing a diesel fuel composition, the method comprising:

[0006] Catalytic dehydration of monosaccharides or biomass yields furanaldehyde compounds;

[0007] The furanaldehyde compound is subjected to an aldol condensation reaction with a carbonyl compound to obtain a compound with 8 to 10 carbon atoms. 15 Oxygen-containing intermediate compounds;

[0008] The oxygen-containing intermediate compound is subjected to hydrogenation saturation treatment to obtain an oxygen-containing compound, which is then used as a biomass-based component oil.

[0009] After mixing the biomass-based component oil with the additives, stir for 1 to 30 minutes, then add diesel fuel and stir for 1 to 30 minutes to obtain the diesel fuel composition.

[0010] Optionally, the method further includes: subjecting at least a portion of the oxygen-containing compound to a hydrodeoxygenation reaction to obtain long-chain alkanes, and using at least a portion of the oxygen-containing compound and / or the long-chain alkanes as the biomass-based component oil.

[0011] Optionally, the biomass-based component oil has a distillation range of 140–350°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C is 50–98 wt%.

[0012] Optionally, the biomass includes at least one of straw, corn cob, xylose, glucose, and fructose;

[0013] The furanaldehyde compounds include at least one of furfural, 5-hydroxymethylfurfural, and furfuryl alcohol;

[0014] The carbonyl compound includes acetone and / or levulinic acid;

[0015] The diesel fuel is selected from at least one of catalytic diesel fuel, hydrotreated diesel fuel, or straight-run diesel fuel;

[0016] The additive includes at least one of pour point depressant, anti-wear agent and cetane number improver;

[0017] Preferably, the pour point depressant is polyethylene vinyl acetate (EVA), the anti-wear agent is a fatty acid and / or fatty acid ester, and the cetane number improver is isooctyl nitrate.

[0018] Optionally, the amount of diesel oil used is 1 to 1000 parts by weight, preferably 1 to 200 parts by weight, relative to 1 part by weight of the biomass-based component oil.

[0019] Based on the total weight of the diesel composition, the amount of the pour point depressant is 100-1000 ppm, the amount of the anti-wear agent is 100-300 ppm, and the amount of the cetane number improver is 100-1000 ppm.

[0020] Optionally, the hydrodeoxygenation reaction is carried out under the action of a hydrodeoxygenation catalyst, the hydrodeoxygenation catalyst comprising a support and an active metal supported on the support, wherein the active metal is selected from at least one of nickel, molybdenum, tungsten, cobalt, palladium and platinum, and the support is M-(SiO2). X The composite oxide, M is selected from at least one of niobium oxide, cobalt oxide and cerium oxide, and x is 1 to 100;

[0021] Preferably, M is an amorphous Nb₂O₅, and x is 1 to 40; the active metal is selected from at least one of palladium, nickel, and platinum, and the loading of the active metal is 0.05 wt% to 30 wt%.

[0022] Preferably, the support is a porous structure composed of clusters of M and SiO2 oxide particles, wherein the SiO2 is amorphous, the size of the clusters is 200 nm to 2000 nm, and the specific surface area of ​​the first support is 200 m². 2 / g~700m 2 / g, with a pore volume of 0.1cc / g to 0.9cc / g.

[0023] Optionally, the hydrodeoxygenation reaction includes: carrying out the hydrodeoxygenation reaction of the oxygen-containing compound in a fixed-bed reactor containing the hydrodeoxygenation catalyst, wherein the reaction temperature is 100℃~400℃, the reaction pressure is 0.5MPa~15MPa, and the mass hourly space velocity is 0.1h. -1 ~10h -1 The hydrogen-to-oil volume ratio is 50–3000.

[0024] This disclosure also provides a diesel composition prepared by the method described in any one of the foregoing methods, the diesel composition comprising: a biomass-based component oil, diesel oil, and additives, wherein the biomass-based component oil comprises C8 to C96. 15 The alkanes and / or oxygen-containing compounds have a distillation range of 140–350°C, and the content of the components in the distillation range of 180–340°C is 50–98 wt% based on the total weight of the biomass-based component oil.

[0025] Optionally, the sulfur content of the biomass-based component oil is 0.01–10 mg / L, preferably 0.01–5 mg / L; the cetane number of the biomass-based component oil is 50–80, preferably 55–75.

[0026] Optionally, the diesel composition has the following property parameters:

[0027] The sulfur content is 0.1–45 mg / L, preferably 0.1–30 mg / L;

[0028] The cetane number is 50-75, preferably 50-70;

[0029] The wear mark diameter at 60℃ is 100–450 μm, preferably 200–440 μm;

[0030] The char residue of 10% distillation residue is 0-0.3%, preferably 0-0.1%.

[0031] Through the above technical solution, the preparation method of this disclosure first uses monosaccharides or biomass to prepare biomass-based component oil, and then mixes the prepared biomass-based component oil with diesel and additives to prepare diesel composition. Since the prepared biomass-based component oil has better thermal stability, lower sulfur content and higher cetane number, the diesel composition prepared by this disclosure has better thermal stability, lower sulfur content and higher cetane number.

[0032] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Detailed Implementation

[0033] The following provides a detailed description of specific embodiments of this disclosure. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit this disclosure.

[0034] The first aspect of this disclosure provides a method for preparing a diesel fuel composition, the method comprising: subjecting a monosaccharide or biomass to a catalytic dehydration reaction to obtain a furanaldehyde compound; and subjecting the furanaldehyde compound to an aldol condensation reaction with a carbonyl compound to obtain a carbon compound having a carbon number of C8 to C99. 15 The oxygen-containing intermediate compound is subjected to hydrogenation saturation treatment to obtain an oxygen-containing compound, which is then used as a biomass-based component oil. The biomass-based component oil is mixed with additives and stirred for 1 to 30 minutes. Then diesel oil is added and stirred for 1 to 30 minutes to obtain the diesel oil composition.

[0035] According to this disclosure, the method may further include: subjecting at least a portion of the oxygen-containing compound to a hydrodeoxygenation reaction to obtain long-chain alkanes, and using at least a portion of the oxygen-containing compound and / or the long-chain alkanes as the biomass-based component oil.

[0036] The preparation method disclosed herein first uses monosaccharides or biomass to prepare biomass-based component oil, and then mixes the prepared biomass-based component oil with diesel and additives to prepare a diesel composition. Since the prepared biomass-based component oil has better thermal stability, lower sulfur content and higher cetane number, the diesel composition prepared by this disclosure has better thermal stability, lower sulfur content and higher cetane number.

[0037] Furthermore, the biomass-based component oil prepared using monosaccharides or biomass as raw materials in this disclosure has the advantages of being renewable and having low carbon emissions. Using it to prepare diesel oil can not only expand the source of diesel oil and alleviate the oil crisis, but also realize the reuse of waste biomass.

[0038] According to this disclosure, the distillation range of the biomass-based component oil can vary within a certain range. For example, the distillation range of the biomass-based component oil can be 140–350°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C can be 50–98 wt%.

[0039] According to this disclosure, the various raw materials involved in the method can be selected within a certain range. For example, the biomass may include at least one of straw, corn cob, xylose, glucose, and fructose; the furanaldehyde compound may include at least one of furfural, 5-hydroxymethylfurfural, and furfuryl alcohol; the carbonyl compound may include acetone and / or levulinic acid; the diesel fuel may be selected from at least one of catalytic diesel fuel, hydrotreated diesel fuel, or straight-run diesel fuel; the additive may include at least one of pour point depressant, anti-wear agent, and cetane number improver; preferably, the pour point depressant may be polyethylene acetate (EVA), the anti-wear agent may be fatty acid and / or fatty acid ester, and the cetane number improver may be isooctyl nitrate.

[0040] In this disclosure, specifically, the method for catalytically dehydrating monosaccharides or biomass can be conventional in the art. For example, monosaccharides or biomass can be catalytically dehydrated under acid catalysis to obtain furanaldehyde compounds. The acid used for catalysis can be, for example, an organic acid, an inorganic acid, an acid salt, a Lewis acid, or a solid acid.

[0041] The aldol condensation reaction can be carried out under the action of an alkaline catalyst, which can be an inorganic base. The inorganic base can be selected from one or more of sodium hydroxide, potassium hydroxide, ammonia, sodium carbonate, and potassium carbonate, and the molar concentration of the inorganic base can be 0.05 mol / L to 1 mol / L.

[0042] The hydrogenation saturation treatment can be carried out under the action of a hydrogenation saturation catalyst, which may include a composite of nickel and silicon dioxide, wherein the silicon dioxide has an amorphous structure and the nickel has a crystalline structure. The chemical formula of the composite may be Ni-(SiO2). a The value of a can be from 0.1 to 40.

[0043] The hydrogenation saturation treatment may include: dissolving the oxygen-containing intermediate compound in an organic solvent, and then carrying out a hydrogenation saturation reaction in a fixed-bed reactor containing the hydrogenation saturation catalyst. The organic solvent is an oxygen-containing solvent, which may be selected from one or more of methanol, ethanol, and acetone. The mass percentage of the oxygen-containing intermediate compound in the solution may be 0.5% to 50%. The temperature of the hydrogenation saturation reaction may be 0°C to 200°C, the reaction pressure may be 0.5 MPa to 15 MPa, and the mass hourly space velocity (HSV) may be 0.1 h⁻¹. -1 ~10h -1 The hydrogen-to-oil volume ratio can be 50 to 3000.

[0044] According to this disclosure, the relative amounts of various raw materials involved in the method can vary within a certain range. For example, relative to 1 part by weight of the biomass-based component oil, the amount of diesel oil can be 1 to 1000 parts by weight, preferably 1 to 200 parts by weight; based on the total weight of the diesel oil composition, the amount of the pour point depressant can be 100 to 1000 ppm, the amount of the anti-wear agent can be 100 to 300 ppm, and the amount of the cetane number improver can be 100 to 1000 ppm.

[0045] According to this disclosure, the hydrodeoxygenation reaction is carried out in the presence of a hydrodeoxygenation catalyst, which may include a support and an active metal supported on the support, wherein the active metal is selected from at least one of nickel, molybdenum, tungsten, cobalt, palladium, and platinum, and the support is M-(SiO2). X The composite oxide, M is selected from at least one of niobium oxide, cobalt oxide and cerium oxide, and x is 1 to 100;

[0046] Preferably, M is an amorphous Nb₂O₅, and x is 1 to 40; the active metal is selected from at least one of palladium, nickel, and platinum, and the loading of the active metal is 0.05 wt% to 30 wt%.

[0047] Preferably, the support is a porous structure composed of clusters of M and SiO2 oxide particles, wherein the SiO2 is amorphous, the size of the clusters is 200 nm to 2000 nm, and the specific surface area of ​​the first support is 200 m². 2 / g~700m 2 / g, with a pore volume of 0.1cc / g to 0.9cc / g.

[0048] Optionally, the hydrodeoxygenation reaction may include: carrying out the hydrodeoxygenation reaction of the oxygen-containing compound in a fixed-bed reactor containing the hydrodeoxygenation catalyst, wherein the reaction temperature may be 100℃~400℃, the reaction pressure may be 0.5MPa~15MPa, and the mass hourly space velocity may be 0.1h. -1 ~10h -1 The hydrogen-to-oil volume ratio can be 50 to 3000.

[0049] The second aspect of this disclosure provides a diesel composition prepared by the method of any one of the first aspects, the diesel composition comprising: a biomass-based component oil, diesel oil, and additives, wherein the biomass-based component oil comprises C8 to C96. 15 The alkanes and / or oxygen-containing compounds have a distillation range of 140–350°C, and the content of the components in the distillation range of 180–340°C is 50–98 wt% based on the total weight of the biomass-based component oil.

[0050] According to this disclosure, the sulfur content and cetane number of the biomass-based component oil can vary within a certain range. For example, the sulfur content of the biomass-based component oil can be 0.01 to 10 mg / L, preferably 0.01 to 5 mg / L; the cetane number of the biomass-based component oil can be 50 to 80, preferably 55 to 75.

[0051] According to this disclosure, the diesel fuel composition can have a low sulfur content, a high cetane number, and good thermal stability. Specifically, the sulfur content can be 0.1–45 mg / L, preferably 0.1–30 mg / L; the cetane number can be 50–75, preferably 50–70; the wear track diameter at 60°C can be 100–450 μm, preferably 200–440 μm; and the carbon residue in 10% distillation residue can be 0–0.3%, preferably 0–0.1%.

[0052] Specifically, the cetane number is an important indicator for evaluating the combustion performance of diesel fuel. It represents a conventional value indicating the ignition performance of diesel fuel in an engine and can be determined according to the method in GB / T 11139-89. The 10% distillation residue carbon residue can be determined according to the methods in GB / T 6536-1977 and GB / T 268-87.

[0053] The present disclosure is further illustrated below by means of examples, but the present disclosure is not limited thereto. Unless otherwise specified, the raw materials, reagents, instruments and equipment involved in the embodiments of the present disclosure can all be obtained by purchase.

[0054] Example 1

[0055] Diesel fuel composition was prepared using the following method:

[0056] (1) Monosaccharides or biomass are subjected to catalytic dehydration reaction under the action of acid catalyst to generate furan aldehyde compounds;

[0057] (2) The generated furanaldehyde compounds were reacted with acetone in the presence of an aldol condensation reaction to obtain a compound with 8 to 10 carbon atoms. 15 Oxygen-containing intermediate compounds;

[0058] (3) The oxygen-containing intermediate compound obtained in step (2) is subjected to hydrogen saturation treatment under the action of hydrogenation saturation catalyst (Ni-SiO2) to obtain an oxygen-containing compound;

[0059] (4) The oxygen-containing compound obtained in step (3) is subjected to hydrodeoxygenation reaction under the action of hydrodeoxygenation catalyst (Pd / Nb2O5-SiO2), and the product is fractionated to obtain biomass-based component oil.

[0060] (5) Add 500g of biomass-based component oil to a 2L reactor, then add 200mg of EVA, 100mg of oleic acid and 100mg of isooctyl nitrate in sequence. After stirring for 30min, add 500g of Yanshan Petrochemical No. 0 diesel oil and stir for 30min to obtain the diesel composition S1 of this embodiment.

[0061] In this embodiment, the biomass-based component oil has a distillation range of 160–340°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C is 89 wt%; the sulfur content of the biomass-based component oil is 1.0 mg / L, and the cetane number is 68.

[0062] In diesel composition S1, the content of diesel is 1 part by weight relative to 1 part by weight of biomass-based component oil; based on the total weight of diesel composition S1, the content of pour point depressant (EVA) is 200 ppm, the content of anti-wear agent (oleic acid) is 100 ppm, and the content of cetane number improver (isooctyl nitrate) is 100 ppm.

[0063] Example 2

[0064] Diesel fuel composition was prepared using the following method:

[0065] (1) Monosaccharides or biomass are subjected to catalytic dehydration reaction under the action of acid catalyst to generate furan aldehyde compounds;

[0066] (2) The generated furanaldehyde compounds were reacted with acetone in the presence of an aldol condensation reaction to obtain a compound with 8 to 10 carbon atoms. 15 Oxygen-containing intermediate compounds;

[0067] (3) The oxygen-containing intermediate compound obtained in step (2) is subjected to hydrogen saturation treatment under the action of hydrogenation saturation catalyst (Ni-SiO2) to obtain an oxygen-containing compound;

[0068] (4) The oxygen-containing compound obtained in step (3) is subjected to hydrodeoxygenation reaction under the action of hydrodeoxygenation catalyst (Pd / Nb2O5-SiO2), and the product is fractionated to obtain biomass-based component oil.

[0069] (5) Add 400g of biomass-based component oil to a 2L reactor, then add 200mg of EVA, 100mg of oleic acid and 100mg of isooctyl nitrate in sequence. After stirring for 30 minutes, add 600g of Yanshan Petrochemical No. 0 diesel oil and stir for 30 minutes to obtain the diesel composition S2 of this embodiment.

[0070] In this embodiment, the biomass-based component oil has a distillation range of 150–350°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C is 86 wt%; the sulfur content of the biomass-based component oil is 1.1 mg / L, and the cetane number is 71.

[0071] In diesel composition S1, the content of diesel is 1.5 parts by weight relative to 1 part by weight of biomass-based component oil; based on the total weight of diesel composition S1, the content of pour point depressant (EVA) is 200 ppm, the content of anti-wear agent (oleic acid) is 100 ppm, and the content of cetane number improver (isooctyl nitrate) is 100 ppm.

[0072] Example 3

[0073] Diesel fuel composition was prepared using the following method:

[0074] (1) Monosaccharides or biomass are subjected to catalytic dehydration reaction under the action of acid catalyst to generate furan aldehyde compounds;

[0075] (2) The generated furanaldehyde compounds were reacted with acetone in the presence of an aldol condensation reaction to obtain a compound with 8 to 10 carbon atoms. 15 Oxygen-containing intermediate compounds;

[0076] (3) The oxygen-containing intermediate compound obtained in step (2) is subjected to hydrogen saturation treatment under the action of hydrogenation saturation catalyst (Ni-SiO2) to obtain an oxygen-containing compound;

[0077] (4) The oxygen-containing compound obtained in step (3) is subjected to hydrodeoxygenation reaction under the action of hydrodeoxygenation catalyst (Pd / Nb2O5-SiO2), and the product is fractionated to obtain biomass-based component oil.

[0078] (5) Add 300g of biomass-based component oil to a 2L reactor, then add 200mg of EVA, 100mg of oleic acid and 100mg of isooctyl nitrate in sequence. After stirring for 30min, add 700g of Yanshan Petrochemical No. 0 diesel oil and stir for 30min to obtain the diesel composition S3 of this embodiment.

[0079] In this embodiment, the biomass-based component oil has a distillation range of 170–350°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C is 93 wt%; the sulfur content of the biomass-based component oil is 0.9 mg / L, and the cetane number is 72.

[0080] In diesel composition S1, the content of diesel is 2.3 parts by weight relative to 1 part by weight of biomass-based component oil; based on the total weight of diesel composition S1, the content of pour point depressant (EVA) is 200 ppm, the content of anti-wear agent (oleic acid) is 100 ppm, and the content of cetane number improver (isooctyl nitrate) is 100 ppm.

[0081] Example 4

[0082] Diesel fuel composition was prepared using the following method:

[0083] (1) Monosaccharides or biomass are subjected to catalytic dehydration reaction under the action of acid catalyst to generate furan aldehyde compounds;

[0084] (2) The generated furanaldehyde compounds were reacted with acetone in the presence of an aldol condensation reaction to obtain a compound with 8 to 10 carbon atoms. 15 Oxygen-containing intermediate compounds;

[0085] (3) The oxygen-containing intermediate compound obtained in step (2) is subjected to hydrogen saturation treatment under the action of hydrogenation saturation catalyst (Ni-SiO2) to obtain an oxygen-containing compound;

[0086] (4) The oxygen-containing compound obtained in step (3) is subjected to hydrodeoxygenation reaction under the action of hydrodeoxygenation catalyst (Pd / Nb2O5-SiO2), and the product is fractionated to obtain biomass-based component oil.

[0087] (5) Add 200g of biomass-based component oil to a 2L reactor, then add 200mg of EVA, 100mg of oleic acid and 100mg of isooctyl nitrate in sequence. After stirring for 30 minutes, add 800g of Yanshan Petrochemical No. 0 diesel oil and stir for 30 minutes to obtain the diesel composition S4 of this embodiment.

[0088] In this embodiment, the biomass-based component oil has a distillation range of 160–340°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C is 95 wt%; the sulfur content of the biomass-based component oil is 0.8 mg / L, and the cetane number is 73.

[0089] In diesel composition S1, the content of diesel is 4 parts by weight relative to 1 part by weight of biomass-based component oil; based on the total weight of diesel composition S1, the content of pour point depressant (EVA) is 200 ppm, the content of anti-wear agent (oleic acid) is 100 ppm, and the content of cetane number improver (isooctyl nitrate) is 100 ppm.

[0090] Example 5

[0091] Diesel fuel composition was prepared using the following method:

[0092] (1) Monosaccharides or biomass are subjected to catalytic dehydration reaction under the action of acid catalyst to generate furan aldehyde compounds;

[0093] (2) The generated furanaldehyde compounds were reacted with acetone in the presence of an aldol condensation reaction to obtain a compound with 8 to 10 carbon atoms. 15 Oxygen-containing intermediate compounds;

[0094] (3) The oxygen-containing intermediate compound obtained in step (2) is subjected to hydrogen saturation treatment under the action of hydrogenation saturation catalyst (Ni-SiO2) to obtain an oxygen-containing compound;

[0095] (4) The oxygen-containing compound obtained in step (3) is subjected to hydrodeoxygenation reaction under the action of hydrodeoxygenation catalyst (Pd / Nb2O5-SiO2), and the product is fractionated to obtain biomass-based component oil.

[0096] (5) Add 100g of biomass-based component oil to a 2L reactor, then add 200mg of EVA, 100mg of oleic acid and 100mg of isooctyl nitrate in sequence. After stirring for 30min, add 900g of Yanshan Petrochemical No. 0 diesel oil and stir for 30min to obtain the diesel composition S5 of this embodiment.

[0097] In this embodiment, the biomass-based component oil has a distillation range of 150–350°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C is 91 wt%; the sulfur content of the biomass-based component oil is 0.9 mg / L, and the cetane number is 70.

[0098] In diesel composition S1, the content of diesel is 9 parts by weight relative to 1 part by weight of biomass-based component oil; based on the total weight of diesel composition S1, the content of pour point depressant (EVA) is 200 ppm, the content of anti-wear agent (oleic acid) is 100 ppm, and the content of cetane number improver (isooctyl nitrate) is 100 ppm.

[0099] Example 6

[0100] Diesel fuel composition was prepared using the following method:

[0101] (1) Monosaccharides or biomass are subjected to catalytic dehydration reaction under the action of acid catalyst to generate furan aldehyde compounds;

[0102] (2) The generated furanaldehyde compounds were reacted with acetone in the presence of an aldol condensation reaction to obtain a compound with 8 to 10 carbon atoms. 15 Oxygen-containing intermediate compounds;

[0103] (3) The oxygen-containing intermediate compound obtained in step (2) is subjected to hydrogenation saturation treatment under the action of hydrogenation saturation catalyst (Ni-SiO2) to obtain an oxygen-containing compound, which is used as a biomass-based component oil.

[0104] (4) Add 50g of biomass-based component oil to a 2L reactor, then add 200mg of EVA, 100mg of oleic acid and 100mg of isooctyl nitrate in sequence. After stirring for 30min, add 950g of Yanshan Petrochemical No. 0 diesel oil and stir for 30min to obtain the diesel composition S6 of this embodiment.

[0105] In this embodiment, the biomass-based component oil has a distillation range of 150–350°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C is 82 wt%; the sulfur content of the biomass-based component oil is 1.1 mg / L, and the cetane number is 69.

[0106] In diesel composition S1, the content of diesel is 19 parts by weight relative to 1 part by weight of biomass-based component oil; based on the total weight of diesel composition S1, the content of pour point depressant (EVA) is 200 ppm, the content of anti-wear agent (oleic acid) is 100 ppm, and the content of cetane number improver (isooctyl nitrate) is 100 ppm.

[0107] Example 7

[0108] Diesel composition S7 was prepared using the method of Example 1, except that in this example, the amount of biomass-based component oil used was 5g, and the amount of Yanshan Petrochemical No. 0 diesel oil used was 995g. In diesel composition S7, the content of diesel oil was 199 parts by weight relative to 1 part by weight of biomass-based component oil.

[0109] Example 8

[0110] Diesel composition S8 was prepared using the method of Example 1, except that in this example, the amount of biomass-based component oil used was 10g, and the amount of Yanshan Petrochemical No. 0 diesel oil used was 990g. In diesel composition S8, the content of diesel oil was 99 parts by weight relative to 1 part by weight of biomass-based component oil.

[0111] Comparative Example

[0112] Diesel fuel composition was prepared using the following method:

[0113] Add 1000g of Yanshan Petrochemical No. 0 diesel oil to a 2L reactor, then add 200mg of EVA, 100mg of oleic acid and 100mg of isooctyl nitrate in sequence, and stir for 30min to obtain diesel oil composition D1.

[0114] Test case

[0115] Conventional methods in the field were used to test the relevant property parameters of the diesel compositions prepared in Examples 1-8 and comparative examples. The test results are shown in Table 1.

[0116] Table 1

[0117]

[0118] As can be seen from Table 1, the diesel composition provided in this disclosure has a lower sulfur content, a higher cetane number, and better thermal stability compared to existing diesels.

[0119] The preferred embodiments of this disclosure have been described in detail above. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0120] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0121] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A method for preparing a diesel fuel composition, characterized in that, The method includes: Biomass is subjected to a catalytic dehydration reaction to obtain furan aldehyde compounds; The furanaldehyde compound is subjected to an aldol condensation reaction with a carbonyl compound to obtain a compound with 8 to 10 carbon atoms. 15 Oxygen-containing intermediate compounds; The oxygen-containing intermediate was subjected to hydrogen saturation treatment to obtain an oxygen-containing compound. At least a portion of the oxygen-containing compounds are subjected to a hydrodeoxygenation reaction to obtain long-chain alkanes, which are then used as biomass-based component oils. The biomass-based component oils have a distillation range of 140–350°C, and based on the total weight of the biomass-based component oils, the content of components within the distillation range of 180–340°C is 50–98 wt%. The sulfur content of the biomass-based component oils is 0.01–10 mg / L, and the cetane number of the biomass-based component oils is 50–80. After mixing the biomass-based component oil with the additives, stir for 1 to 30 minutes, then add diesel oil and stir for 1 to 30 minutes to obtain the diesel oil composition; The biomass includes at least one of straw, corn cob, xylose, glucose, and fructose; The furanaldehyde compounds include at least one of furfural and 5-hydroxymethylfurfural; The carbonyl compound includes acetone and / or levulinic acid; The diesel fuel is at least one of catalytic diesel fuel, hydrogenated diesel fuel, or straight-run diesel fuel; The additive includes at least one of pour point depressant, anti-wear agent and cetane number improver; The pour point depressant is polyethylene vinyl acetate (EVA), the anti-wear agent is fatty acid and / or fatty acid ester, and the cetane number improver is isooctyl nitrate. The amount of diesel oil used is 1 to 19 parts by weight relative to 1 part by weight of the biomass-based component oil; Based on the total weight of the diesel composition, the amount of the pour point depressant is 100-1000 ppm, the amount of the anti-wear agent is 100-300 ppm, and the amount of the cetane number improver is 100-1000 ppm.

2. The preparation method according to claim 1, characterized in that, The hydrodeoxygenation reaction is carried out under the action of a hydrodeoxygenation catalyst, which includes a support and an active metal supported on the support, wherein the active metal is at least one selected from nickel, molybdenum, tungsten, cobalt, palladium, and platinum, and the support is M-(SiO2). X A composite oxide, wherein M is an amorphous Nb₂O₅ and x is 1; The carrier is a porous structure composed of clusters of M and SiO2 oxide particles. The SiO2 is amorphous, and the size of the clusters ranges from 200 nm to 2000 nm. The specific surface area of ​​the carrier is 200 m². 2 / g~700m 2 / g, with a pore volume of 0.1cc / g to 0.9cc / g.

3. The preparation method according to claim 2, characterized in that, The active metal is at least one of palladium, nickel, and platinum; the loading of the active metal is 0.05 wt% to 30 wt%.

4. The preparation method according to claim 1, characterized in that, The hydrodeoxygenation reaction comprises: carrying out the hydrodeoxygenation reaction of the oxygen-containing compound in a fixed-bed reactor containing a hydrodeoxygenation catalyst, wherein the reaction temperature is 100℃~400℃, the reaction pressure is 0.5MPa~15MPa, and the mass hourly space velocity is 0.1 h⁻¹. -1 ~10 h -1 The hydrogen-to-oil volume ratio is 50–3000.

5. The diesel composition prepared by the preparation method according to any one of claims 1 to 4, characterized in that, The diesel composition comprises: biomass-based component oil, diesel oil, and additives, wherein the biomass-based component oil comprises C8 to C96. 15 The long-chain alkanes have a distillation range of 140–350°C, and based on the total weight of the biomass-based component oil, the content of the components within the distillation range of 180–340°C is 50–98 wt%; the sulfur content of the biomass-based component oil is 0.01–10 mg / L; and the cetane number of the biomass-based component oil is 50–80.

6. The diesel composition according to claim 5, characterized in that, The sulfur content of the biomass-based component oil is 0.01–5 mg / L; the cetane number of the biomass-based component oil is 55–75.

7. The diesel composition according to claim 5, characterized in that, The diesel fuel composition has the following properties: The sulfur content is 0.1–45 mg / L; Cetane number 50–75; The wear track diameter at 60℃ is 100–450 μm; The char residue of 10% distillation residue is 0-0.3%.

8. The diesel composition according to claim 7, characterized in that, The diesel fuel composition has the following properties: The sulfur content is 0.1–30 mg / L; Cetane number 50–70; The wear track diameter at 60℃ is 200–440 μm; The char residue of 10% distillation residue is 0-0.1%.

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