A ternary or quaternary mixed fuel based on THDCPD, THTCPD, saturated norbornadiene dimer Exo, Binor-S

Abstract

The application discloses a binary, ternary or quaternary mixed fuel based on THDCPD, THTCPD, saturated norbornadiene dimer Exo and Binor-S, wherein the binary mixed fuel comprises two of the saturated norbornadiene dimer Exo, Binor-S, THDCPD and THTCPD; the ternary mixed fuel comprises the saturated norbornadiene dimer Exo, THDCPD and THTCPD; and the quaternary mixed fuel comprises the Binor-S, Exo, THDCPD and THTCPD. The density of the mixed fuel is greater than 0.9 g·cm ‑3 , the volumetric net heat value is greater than 38 MJ / L, the viscosity at 0 DEG C is lower than 80 Pa·s, and the freezing point is lower than -50 DEG C, so that the specific requirements of engines and aircrafts can be met.

Description

Technical Field

[0001] This invention belongs to the field of fuel technology and relates to a ternary or quaternary mixed fuel based on THDCPD, THTCPD, saturated norbornene dimer Exo, and Binor-S. Background Technology

[0002] Hydrocarbon fuels are critical materials for aircraft engine systems. As engines are updated and iterated, the requirements for the corresponding fuels become increasingly stringent, and single hydrocarbon compounds often cannot meet all demands. For example, high-density fuels tend to have higher viscosity at low temperatures, while fuels with high cold-temperature fluidity often have lower density. Therefore, most fuels in use are mixtures of multiple substances. Blended fuels can combine the advantages of each component, meeting all standards.

[0003] High-density fuels are a crucial component of modern aircraft propulsion systems, providing greater power, higher payload, and longer range for strategic and tactical missiles. However, the development of high-density fuels also presents significant challenges. Their higher density leads to increased energy density and storage capacity, but also increases potential hazards. Therefore, researching and developing high-density fuels requires attention not only to their density and calorific value but also to their viscosity and freezing point, necessitating a comprehensive consideration of safety and applicability factors.

[0004] Blended fuels are fuels made by mixing two or more fuels together. This is typically done to improve the performance of a specific fuel and reduce costs in practical applications. Currently, blending traditional transportation fuels such as diesel and kerosene can increase fuel density, thereby increasing its net calorific value. However, fuel density and viscosity are mutually exclusive; simply increasing energy density inevitably leads to increased fuel viscosity. Furthermore, blended fuels currently exhibit poor low-temperature properties.

[0005] Therefore, it is desirable to develop blended fuels with excellent properties in terms of density, calorific value, viscosity and freezing point for specific applications such as engines and aircraft.

[0006] The present invention aims to solve the above-mentioned problems. Summary of the Invention

[0007] This invention prepares ternary and quaternary blended fuels with high density, low freezing point, low viscosity, and high calorific value based on THDCPD, THTCPD, saturated norbornene dimer Exo, and Binor-S. The density of the binary, ternary, or quaternary blended fuel is greater than 0.9 g·cm³. -3 With a net calorific value greater than 38 MJ / L, a viscosity of less than 80 Pa·s at 0℃, and a freezing point of less than -50℃, it can meet the specific requirements of engines and aircraft.

[0008] In this invention, THDCPD is tetrahydrobicyclopentadiene, THTCPD is tetrahydrotricyclopentadiene, Exo is a hexacyclic saturated norbornadiene (NBD) dimer, and Binor-S is a heptaneous saturated norbornadiene (NBD) dimer.

[0009] The technical solution adopted in this invention is as follows:

[0010] The first aspect of this invention provides a binary, ternary, or quaternary mixed fuel based on THDCPD, THTCPD, saturated norbornene dimer Exo, and Binor-S;

[0011] The mass fractions of Binor-S were 0–0.5, Exo was 0–0.9, THTCPD was 0–0.8, and THDCPD was 0–0.5.

[0012] The ternary hybrid fuel comprises saturated norbornene dimer Exo, THDCPD, and THTCPD, wherein the mass fraction of Exo is 0.1–0.4, the mass fraction of THDCPD is 0.3–0.5, and the mass percentage of THTCPD is 0.2–0.4.

[0013] The quaternary fuel mixture comprises Binor-S, Exo, THDCPD, and THTCPD, wherein the mass fraction of Binor-S is 0.1–0.3%, the mass fraction of Exo is 0.55–0.75%, the mass fraction of THDCPD is 0.05–0.25%, and the mass fraction of THTCPD is 0.001–0.15%. The density of the fuel mixture is greater than 0.9 g·cm³. -3 With a net calorific value greater than 38 MJ / L, a viscosity of less than 80 Pa·s at 0℃, and a freezing point of less than -50℃, it can meet the specific requirements of engines and aircraft.

[0014] Preferably, the ternary fuel mixture comprises saturated norbornene dimer Exo, THDCPD, and THTCPD, wherein the mass fraction of Exo is 0.28%, the mass fraction of THDCPD is 0.39%, and the mass percentage of THTCPD is 0.3%; the density of the ternary fuel mixture is 1.0031 g·cm³. -3 The viscosity at 0℃ is 17.33 Pa·s, the viscosity at -20℃ is 32.19 Pa·s, and the net volumetric calorific value is 41.71 MJ·L. -1 Its freezing point is -91℃.

[0015] Preferably, the quaternary fuel mixture comprises Binor-S, Exo, THDCPD, and THTCPD, wherein the mass fraction of Binor-S is 0.17, the mass fraction of Exo is 0.64, the mass fraction of THDCPD is 0.14, and the mass fraction of THTCPD is 0.05; the density of the quaternary fuel mixture is 1.0563 g·cm³. -3 The viscosity at 0℃ is 37.69 Pa·s, and the net volumetric calorific value is 43.92 MJ·L. -1 Its freezing point is -84℃.

[0016] The density of the binary, ternary, or quaternary hybrid fuel is greater than 0.9 g·cm³. -3 It has a net calorific value of more than 38 MJ / L, a viscosity of less than 80 Pa·s at 0℃, and a freezing point of less than -50℃.

[0017] The second aspect of the present invention provides an application of the ternary or quaternary hybrid fuel described in the first aspect of the present invention, which is used in the propulsion of an engine or an aircraft.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention prepares ternary and quaternary blended fuels with high density, low freezing point, low viscosity, and high calorific value based on THDCPD, THTCPD, saturated norbornene dimer Exo, and Binor-S. The density of the binary, ternary, or quaternary blended fuel is greater than 0.9 g·cm³. -3 With a net calorific value greater than 38 MJ / L, a viscosity of less than 80 Pa·s at 0℃, and a freezing point of less than -50℃, it can meet the specific requirements of engines and aircraft.

[0020] 2. The ternary hybrid fuel of this invention comprises saturated norbornene dimer Exo, THDCPD, and THTCPD, wherein the mass fraction of Exo is 0.28%, the mass fraction of THDCPD is 0.39%, and the mass percentage of THTCPD is 0.3%. The density of the ternary hybrid fuel is 1.0031 g·cm³. -3 The viscosity at 0℃ is 17.33 Pa·s, the viscosity at -20℃ is 32.19 Pa·s, and the net volumetric calorific value is 41.71 MJ·L. -1 Its freezing point is -91℃.

[0021] 3. The quaternary blended fuel of this invention comprises Binor-S, Exo, THDCPD, and THTCPD, wherein the mass fraction of Binor-S is 0.17, the mass fraction of Exo is 0.64, the mass fraction of THDCPD is 0.14, and the mass fraction of THTCPD is 0.05. The density of the quaternary blended fuel is 1.0563 g·cm³. -3 The viscosity at 0℃ is 37.69 Pa·s, and the net volumetric calorific value is 43.92 MJ·L. -1 Its freezing point is -84℃. Attached Figure Description

[0022] none. Detailed Implementation

[0023] The present invention will be further described below through embodiments, but is not limited to these embodiments. Experimental methods not specifically described in the embodiments generally use conventional conditions and conditions described in manuals, or conditions recommended by the manufacturer. The general equipment, materials, reagents, etc., used are all commercially available unless otherwise specified.

[0024] Example 1

[0025] This embodiment provides a binary blended fuel comprising Binor-S and Exo, wherein the mass fraction of Binor-S is 0.40 and the mass fraction of Exo is 0.60. The performance parameters of the binary blended fuel are shown in Table 3 below.

[0026] Table 1. Properties of binary blended fuels

[0027] fuel properties numerical values <![CDATA[Density / g·cm -3 > 1.0946 Viscosity at 0℃ / Pa·s 57.49 <![CDATA[Net volume calorific value / MJ·L -1 > 45.40 Freezing point / °C -69

[0028] Example 2

[0029] This embodiment provides a binary blended fuel comprising Exo and THTCPD, wherein the mass fraction of Exo is 0.30 and the mass fraction of THTCPD is 0.70. The performance parameters of the binary blended fuel are shown in Table 2 below.

[0030] Table 2. Property values ​​of binary blended fuels

[0031] fuel properties numerical values <![CDATA[Density / g·cm -3 > 1.0441 Viscosity at 0℃ / Pa·s 68.83 <![CDATA[Net volume calorific value / MJ·L -1 > 43.19 Freezing point / °C -69

[0032] Example 3

[0033] This embodiment provides a ternary hybrid fuel comprising saturated norbornene dimer Exo, THDCPD, and THTCPD, wherein the mass fraction of Exo is 0.28, the mass fraction of THDCPD is 0.39, and the mass percentage of THTCPD is 0.33. The performance parameters of the ternary hybrid fuel are shown in Table 3 below.

[0034] Table 3. Property values ​​of ternary fuel blends

[0035] fuel properties numerical values <![CDATA[Density / g·cm -3 > 1.0031 Viscosity at 0℃ / Pa·s 17.33 Viscosity at -20℃ / Pa·s 32.19 <![CDATA[Net volume calorific value / MJ·L -1 > 41.71 Freezing point / °C -91

[0036] Example 4

[0037] An embodiment provides a ternary hybrid fuel comprising Binor-S, THDCPD, and THTCPD, wherein the mass fraction of Binor-S is 0.20, the mass fraction of THDCPD is 0.20, and the mass percentage of THTCPD is 0.60. The performance parameters of the ternary hybrid fuel are shown in Table 4 below.

[0038] Table 4. Property values ​​of ternary fuel blends

[0039] fuel properties numerical values <![CDATA[Density / g·cm -3 > 1.0288 Viscosity at 0℃ / Pa·s 34.26 <![CDATA[Net volume calorific value / MJ·L -1 > 43.15 Freezing point / °C -90

[0040] Example 5

[0041] This embodiment provides a quaternary blended fuel comprising Binor-S, Exo, THDCPD, and THTCPD, wherein the mass fraction of Binor-S is 0.17, the mass fraction of Exo is 0.64, the mass fraction of THDCPD is 0.14, and the mass fraction of THTCPD is 0.05. The performance parameters of the quaternary blended fuel are shown in Table 5 below.

[0042] Table 5. Property values ​​of quaternary blended fuels

[0043] fuel properties numerical values <![CDATA[Density / g·cm -3 > 1.0563 Viscosity at 0℃ / Pa·s 37.69 <![CDATA[Net volume calorific value / MJ·L -1 > 43.92 Freezing point / °C -84

[0044] Example 6

[0045] This embodiment provides a quaternary blended fuel comprising Binor-S, Exo, THDCPD, and THTCPD, wherein the mass fractions of Binor-S, Exo, THDCPD, and THTCPD are 0.20, 0.20, and 0.40, respectively. The performance parameters of the quaternary blended fuel are shown in Table 6 below.

[0046] Table 6. Property values ​​of quaternary blended fuels

[0047] fuel properties numerical values <![CDATA[Density / g·cm -3 > 1.0372 Viscosity at 0℃ / Pa·s 33.28 <![CDATA[Net volume calorific value / MJ·L -1 > 43.39 Freezing point / °C -82

[0048] Example 7

[0049] This embodiment provides a quaternary blended fuel, comprising Binor-S, Exo, THDCPD, and THTCPD, wherein the mass fractions of Binor-S, Exo, THDCPD, and THTCPD are 0.20, 0.20, 0.40, and 0.20, respectively. The performance parameters of the quaternary blended fuel are shown in Table 7 below.

[0050] Table 7. Property values ​​of quaternary blended fuels

[0051]

[0052]

[0053] Example 8

[0054] This embodiment provides a quaternary blended fuel, comprising Binor-S, Exo, THDCPD, and THTCPD, wherein the mass fraction of Binor-S is 0.20, the mass fraction of Exo is 0.40, the mass fraction of THDCPD is 0.20, and the mass fraction of THTCPD is 0.20. The performance parameters of the quaternary blended fuel are shown in Table 8 below.

[0055] Table 8. Property values ​​of quaternary blended fuels

[0056] fuel properties numerical values <![CDATA[Density / g·cm -3 > 1.0457 Viscosity at 0℃ / Pa·s 28.60 <![CDATA[Net volume calorific value / MJ·L -1 > 43.81 Freezing point / °C -95

[0057] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A ternary mixed fuel, characterized by, The ternary mixed fuel is composed of saturated norbornadiene dimer Exo, THDCPD and THTCPD, wherein when the mass fraction of Exo is 0.28, the mass fraction of THDCPD is 0.39, and the mass fraction of THTCPD is 0.33, the density of the mixed fuel is 1.0031 g·cm -3 , the viscosity at 0℃ is 17.33 Pa·s, the viscosity at -20℃ is 32.19 Pa·s, the net volume heat value is 41.71 MJ·L -1 , and the freezing point is -91℃.

2. A quaternary blended fuel, characterized by, The quaternary mixed fuel is composed of Binor-S, Exo, THDCPD and THTCPD, wherein the mass fraction of Binor-S is 0.17, the mass fraction of Exo is 0.64, the mass fraction of THDCPD is 0.14, and the mass fraction of THTCPD is 0.05, the density of the mixed fuel is 1.0563 g·cm -3 , the viscosity at 0℃ is 37.69 Pa·s, the net volume heat value is 43.92 MJ·L -1 , and the freezing point is -84℃.

3. A quaternary blended fuel, characterized by, The quaternary mixed fuel is composed of Binor-S, Exo, THDCPD and THTCPD, wherein when the mass fraction of Binor-S is 0.20, the mass fraction of Exo is 0.40, the mass fraction of THDCPD is 0.20, and the mass fraction of THTCPD is 0.20, the density of the mixed fuel is 1.0457 g·cm -3 , the viscosity at 0℃ is 28.60 Pa·s, the net volume heat value is 43.81 MJ·L -1 , and the freezing point is -95℃.

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