CN115707761A - No. 95 coal-based aviation gasoline composition and preparation method thereof - Google Patents
No. 95 coal-based aviation gasoline composition and preparation method thereof Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 117
- 239000003502 gasoline Substances 0.000 title claims abstract description 66
- 239000000203 mixture Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims description 9
- 239000003208 petroleum Substances 0.000 claims abstract description 25
- MRMOZBOQVYRSEM-UHFFFAOYSA-N tetraethyllead Chemical compound CC[Pb](CC)(CC)CC MRMOZBOQVYRSEM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000047 product Substances 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 23
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 238000005516 engineering process Methods 0.000 claims description 18
- 238000004821 distillation Methods 0.000 claims description 15
- 239000012188 paraffin wax Substances 0.000 claims description 13
- 238000002407 reforming Methods 0.000 claims description 12
- 229930195733 hydrocarbon Natural products 0.000 claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 6
- 238000005194 fractionation Methods 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 238000001833 catalytic reforming Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000005984 hydrogenation reaction Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000029936 alkylation Effects 0.000 claims description 2
- 238000005804 alkylation reaction Methods 0.000 claims description 2
- 150000008282 halocarbons Chemical class 0.000 claims description 2
- 238000005504 petroleum refining Methods 0.000 claims description 2
- 239000011265 semifinished product Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 23
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 21
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 4
- 150000001924 cycloalkanes Chemical class 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- PAAZPARNPHGIKF-UHFFFAOYSA-N 1,2-dibromoethane Chemical compound BrCCBr PAAZPARNPHGIKF-UHFFFAOYSA-N 0.000 description 1
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- ISUBZZYLOBVUCH-UHFFFAOYSA-N octane tetraethylplumbane Chemical compound CCCCCCCC.CC[Pb](CC)(CC)CC ISUBZZYLOBVUCH-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000004250 tert-Butylhydroquinone Substances 0.000 description 1
- 235000019281 tert-butylhydroquinone Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a No. 95 coal-based aviation gasoline composition, which comprises the following components in percentage by mass: 12-30% of coal-based reformate, 12-28% of coal-based reformed topping oil, 12-30% of coal-based naphtha, 25-50% of petroleum-based alkylated gasoline and 2.4-3.2 g/kg of tetraethyl lead. The components are blended and mixed evenly to prepare the finished product. Compared with the prior art, the 95 # coal-based aviation gasoline mainly takes coal as a raw material source, widens the raw material source of the 95 # aviation gasoline, and can meet all index requirements of GB1787-2018 aviation piston engine fuel on the 95 # aviation gasoline.
Description
Technical Field
The invention belongs to the field of fuel oil, and particularly relates to a coal-based aviation gasoline composition and a preparation method thereof.
Background
Aviation gasoline, also known as aviation piston engine fuel, is mainly used in aircraft equipped with reciprocating piston engines, such as gunplanes in the military field, unmanned planes, primary trainers, and agricultural planes in the general aviation field, as well as in meteorological machines, prospecting machines, and the like. Compared with developed countries such as Europe and America, the development of the general aviation field in China is slower, the general aviation aircrafts and the general aviation airports are only less than 5% of the United states, but with the gradual promotion of the low-altitude airspace management reform in China, the general aircrafts are continuously and rapidly developed at the growth rate of more than 20% per year. Correspondingly, aviation gasoline is used as a fuel in the general aviation field, the consumption rate of the aviation gasoline is kept above 15%, and the high-speed increasing consumption demand is kept in the future. Therefore, the field also attracts more research attention, for example, in patent CN 104673409B, a lead-free, high-quality, clean aviation gasoline is proposed, in which the motor octane number can reach more than 95 without adding lead, but most blending components are pure petrochemical products, the cost is high, and the blending components are not suitable for production in an oil refinery, and only physicochemical properties of the blending product, such as the motor octane number, the distillation range, the vapor pressure, the freezing point, and the water reaction volume, are examined, but other physicochemical properties are not examined.
GB1787-2018 stipulates 5 types of aviation gasoline, namely 75, 95, 100, lead-free 91 and low-lead 100, and all components are derived from petroleum. The No. 95 aviation gasoline is petrochemical produced in Lanzhou petroleum, has annual output of about 10000 ton and is used in large piston type aviation engine with supercharger.
With the continuous high consumption demand in the field of aviation gasoline, along with the adjustment of energy structures in China and new requirements for guaranteeing energy safety, a corresponding solution is provided for preparing aviation gasoline by taking coal as a raw material. On the background of continuous high consumption demand in the field of aviation gasoline, the dependence degree of petroleum import in China is over 70 percent, and aviation gasoline produced by taking petroleum as a raw material faces a severe energy guarantee problem. In addition, in recent years, the international situation is complex, the global economic and political development is unstable and uncertainty is greatly increased, the western countries block and sanction people in multiple fields, particularly the United states poses a great threat to the safety of oil and gas inlet channels in China, and the petroleum supply becomes the largest brake for the national energy safety and national defense safety, so that the guarantee of the energy safety supply becomes a major problem facing the countries. The outstanding problem can be solved by developing coal-based fuel, wherein the coal-based aviation gasoline can provide stable and safe energy supply for the existing piston helicopters, unmanned planes and the like.
Patent CN 109679692A proposes an aviation blend oil and a preparation method thereof, and the preparation method comprises the following steps: directly fractionating coal liquefied naphtha to obtain a C6-product and a C7+ product; carrying out catalytic reforming reaction on the C7+ product to obtain mixed aromatic hydrocarbon; and mixing the mixed aromatic hydrocarbon, the mixed carbon five, the methyl tert-butyl ether and the isooctane to obtain the aviation blend oil. The method considers the motor octane number, the sulfur content, the distillation range, the saturated vapor pressure and the aromatic hydrocarbon content of the blended product, but does not consider other important indexes such as freezing point, acidity and the like, and because the blended product contains more methyl tert-butyl ether, the calorific value of the blended product cannot meet the index requirements and cannot be directly used as aviation gasoline.
Coal is used as a raw material, coal-based aviation gasoline blending components such as coal-based reformate, coal-based reformed topping oil, coal-based naphtha, petroleum-based alkylated gasoline and the like can be prepared by adopting a coal liquefaction technology including a coal direct liquefaction technology and a coal indirect liquefaction technology and further adopting a secondary processing process including distillation cutting, catalytic reforming and the like, but how to blend aviation gasoline meeting the national standard requirements by utilizing the blending components is difficult because the fuel component hydrocarbon prepared in a coal-to-liquid route is single in composition, for example, the fuel component prepared in the coal direct liquefaction route mainly comprises aromatic hydrocarbon and naphthenic hydrocarbon; the coal indirect liquefaction route basically mainly comprises paraffin, and the fuel is a mixture consisting of different hydrocarbons, so that a plurality of performance indexes are simultaneously considered. Therefore, how to select proper blending components and determine the respective contents, and blend various indexes meeting the national standard requirements by using coal-based blending components as much as possible is a new topic in the field.
Disclosure of Invention
The invention provides a coal-based aviation gasoline composition meeting various index requirements of No. 95 aviation gasoline and a preparation method thereof, aiming at the current situation that the raw material source of the existing No. 95 aviation gasoline is only petroleum and the raw material structure is single, wherein the proportion of coal-based blending components can be higher than 60%.
The No. 95 coal-based aviation gasoline composition comprises the following components in percentage by mass: 12 to 30 percent of coal-based reformate, preferably 15 to 25 percent; 12 to 28 percent of coal-based reforming topping oil, preferably 15 to 25 percent; coal-based naphtha 12-30%, preferably 15-25%; 25 to 50 percent of petroleum-based alkylated gasoline, preferably 30 to 40 percent; the addition amount of tetraethyl lead is 2.4-3.2 g/kg.
The composition of the invention can contain a proper amount of antioxidant, and the addition amount of the antioxidant can be 20-50 mg/L, preferably 20-30mg/L.
Wherein the carbon number of the coal-based naphtha is distributed between C4 and C11, wherein the C6 to C9 components account for more than 75 percent; the hydrocarbon composition comprises normal alkane, isoparaffin, cycloparaffin and arene, wherein the main component is the cycloparaffin with the proportion of 65-75 percent, the secondary component is the normal alkane and the isoparaffin with the proportion of 8-15 percent, and the content of the arene is lower than 3 percent.
The coal-based naphtha production technology comprises but is not limited to a coal direct liquefaction technology and a hydro-upgrading technology, and can be obtained by the following methods: the coal is directly liquefied to obtain liquefied oil, and the liquefied oil is further subjected to hydrogenation modification and then subjected to fractionation to obtain the coal-based naphtha.
Wherein the carbon number of the coal-based reformate is distributed in C5-C11, and the C7-C9 components account for more than 85 percent; the hydrocarbon composition comprises normal paraffin, isoparaffin, naphthene and aromatic hydrocarbon, wherein the proportion of the main aromatic hydrocarbon is 70-80%, the proportion of the secondary isoparaffin is 10-15%, and the proportion of the normal paraffin and the naphthene is the lowest, and is 2-10%.
The coal-based reformate production technology comprises but is not limited to a direct coal liquefaction technology, a hydro-upgrading technology and a reforming technology, and can be obtained by the following methods: the coal is directly liquefied to obtain liquefied oil, the liquefied oil is further subjected to hydro-upgrading, then the coal-based naphtha is obtained through fractionation, and heavy components of the coal-based naphtha after distillation are further sent to a catalytic reforming unit to obtain the coal-based reformate.
Wherein the carbon number of the coal-based reforming topping oil is distributed between C4 and C7, wherein the proportion of C5 to C6 components is more than 85 percent; the hydrocarbon composition comprises normal paraffin, isoparaffin, cycloparaffin and arene, wherein the main component is cycloparaffin accounting for 55-65%, the secondary component is normal paraffin and isoparaffin accounting for 18-25%, and the content of arene is lower than 3%.
The production technology of the coal-based reforming topping oil comprises but is not limited to a direct coal liquefaction technology and a hydro-upgrading technology, and can be obtained by the following methods: the coal is directly liquefied to obtain liquefied oil, and then subjected to hydro-upgrading and fractionation to obtain coal-based naphtha, wherein the light component on the top of the tower after distillation before the coal-based naphtha is sent to a reforming reactor is the coal-based reforming topping oil.
Wherein the petroleum-based alkylated gasoline has carbon number distribution of C4-C12, wherein the carbon number distribution is mainly C8 isoparaffin accounting for 78-88%, and the carbon number distribution is mainly other carbon number isoparaffin accounting for 12-18%. The petroleum-based alkylated gasoline is derived from alkylation technology in the petroleum refining process.
Wherein the tetraethyl lead is usually combined with a halogenated hydrocarbon entrainer (such as 1, 2-dibromoethane) to form a mixed solution, and the mass fraction of the tetraethyl lead is 35-65%.
Wherein, the antioxidant can be one or more selected from 2, 6-di-tert-butyl-p-cresol, tert-butyl hydroquinone and 2, 6-di-tert-butyl phenol.
A preparation method of No. 95 coal-based aviation gasoline comprises the following steps:
(1) Mixing coal-based reformate, coal-based reformed topping oil, coal-based naphtha and petroleum-based alkylated gasoline according to the proportion, and uniformly stirring;
(2) Adding tetraethyl lead mixed solution into the compound gasoline prepared by blending in the step (2), and uniformly mixing to obtain a semi-finished product of No. 95 coal-based aviation gasoline;
(3) And (3) adding an antioxidant into the compound gasoline prepared in the step (2) according to the requirement, and uniformly mixing to obtain the finished product of the No. 95 coal-based aviation gasoline.
The invention has the following advantages:
the application creatively provides that the coal-based gasoline blending component and the petroleum-based alkylated gasoline component are blended to prepare a product which completely meets the requirements of various indexes of No. 95 aviation gasoline in GB1787-2018 aviation piston engine fuel, wherein the proportion of the coal-based blending component can be higher than 60%. The invention widens the raw material source of the No. 95 aviation gasoline, is beneficial to enriching the energy structure of the aviation gasoline, ensures the energy safety of China, has lower cost and simple preparation method, and has industrial application prospect and obvious social benefit.
Detailed Description
The following examples are provided to further illustrate the embodiments of the present invention.
Among the following blended products, coal-based reformate, coal-based reformed topping oil and coal-based naphtha are coal-to-liquid products of the institute of petrochemical science and technology in China; petroleum-based alkylated gasoline is a product of Yanshan petrochemical refineries.
The compositions of the micro-hydrocarbons and the carbon number distributions of the coal-based reformate, the coal-based reformed topping oil, the coal-based naphtha, and the petroleum-based alkylated gasoline are shown in tables 1,2, 3, and 4.
TABLE 1 molecular composition of coal-based reformate
| Carbon number | N-alkanes | Isoalkanes | Olefins | Cycloalkanes | Aromatic hydrocarbons | Total of |
| 5 | 0.40 | 0.65 | 0.00 | 0.05 | 0.00 | 1.10 |
| 6 | 0.19 | 0.41 | 0.00 | 0.40 | 0.39 | 1.39 |
| 7 | 2.64 | 3.99 | 0.04 | 4.13 | 26.72 | 37.52 |
| 8 | 1.54 | 5.22 | 0.00 | 1.77 | 26.55 | 35.08 |
| 9 | 0.70 | 2.25 | 0.00 | 0.48 | 16.30 | 19.73 |
| 10 | 0.16 | 0.63 | 0.00 | 0.10 | 4.07 | 4.96 |
| 11 | 0.00 | 0.01 | 0.00 | 0.01 | 0.05 | 0.07 |
| Total of | 5.99 | 13.36 | 0.04 | 6.93 | 74.08 | 99.91 |
TABLE 2 coal-based reforming head oil molecular composition
| Carbon number | N-alkanes | Isoalkanes | Olefins | Cycloalkanes | Aromatic hydrocarbons | In total |
| 4 | 1.26 | 0.75 | 0.00 | 0.00 | 0.00 | 2.01 |
| 5 | 8.83 | 7.56 | 0.00 | 3.70 | 0.00 | 20.09 |
| 6 | 8.79 | 8.98 | 0.00 | 54.48 | 1.14 | 73.39 |
| 7 | 0.01 | 2.30 | 0.00 | 2.21 | 0.00 | 4.52 |
| Total of | 18.89 | 19.59 | 0.00 | 60.39 | 1.14 | 100.01 |
TABLE 3 coal-based naphtha molecular composition
| Carbon number | N-alkanes | Isoalkanes | Olefins | Cycloalkanes | Aromatic hydrocarbons | Total of |
| 4 | 0.62 | 0.23 | 0.00 | 0.00 | 0.00 | 0.85 |
| 5 | 3.06 | 1.83 | 0.00 | 1.27 | 0.00 | 6.16 |
| 6 | 3.09 | 2.38 | 0.00 | 17.04 | 0.09 | 22.60 |
| 7 | 2.39 | 1.89 | 0.00 | 22.89 | 0.15 | 27.32 |
| 8 | 1.87 | 3.55 | 0.00 | 19.84 | 0.57 | 25.83 |
| 9 | 1.21 | 1.10 | 0.00 | 9.18 | 0.34 | 11.83 |
| 10 | 0.32 | 2.11 | 0.00 | 2.14 | 0.09 | 4.66 |
| 11 | 0.00 | 0.64 | 0.00 | 0.00 | 0.00 | 0.64 |
| Total of | 12.56 | 13.74 | 0.00 | 72.37 | 1.24 | 99.9 |
TABLE 4 Petroleum based alkylated gasoline molecular composition
| Carbon number | N-alkanes | Isoalkanes | Olefins | Cycloalkanes | Aromatic hydrocarbons | Total of |
| 4 | 3.68 | 0.12 | 0.00 | 0.00 | 0.00 | 3.80 |
| 5 | 0.00 | 2.19 | 0.00 | 0.00 | 0.00 | 2.19 |
| 6 | 0.00 | 1.95 | 0.00 | 0.00 | 0.00 | 1.95 |
| 7 | 0.00 | 2.68 | 0.00 | 0.00 | 0.00 | 2.68 |
| 8 | 0.00 | 83.55 | 0.00 | 0.00 | 0.00 | 83.55 |
| 9 | 0.04 | 1.44 | 0.00 | 0.00 | 0.00 | 1.48 |
| 10 | 0.04 | 0.69 | 0.00 | 0.01 | 0.03 | 0.77 |
| 11 | 0.00 | 3.29 | 0.00 | 0.02 | 0.00 | 3.31 |
| 12 | 0.00 | 0.12 | 0.00 | 0.00 | 0.00 | 0.12 |
| In total | 3.76 | 96.03 | 0.00 | 0.03 | 0.03 | 99.85 |
Formulations 1 to 12
The four components of coal-based reformate, coal-based reformed topping oil, coal-based naphtha and petroleum-based alkylated gasoline are blended, the blending ratio is listed in Table 5, and a tetraethyl lead octane number improver is added.
TABLE 5 number 95 coal-based aviation gasoline blending formula
For a new aviation gasoline, the physicochemical properties which are preferentially considered can be octane number, distillation range and vapor pressure, so that the octane number, distillation range and vapor pressure of the product blended by the formulas 1 to 12 are firstly measured, and the results are listed in the table 6 and compared with the corresponding quality indexes in GB 1787-2018.
As can be seen from table 6: for formula 1, when the blending component of the petroleum-based alkylated gasoline is not added, the octane number of the blended product is 85, the index requirement which is not less than 95 cannot be met, the difference is far, and the 90% evaporation temperature is 149.5 ℃ and is higher than 145 ℃.
For the formula 2, when 20% of the alkylated gasoline is added, the octane number of the product is remarkably improved to 92, but the product is still unqualified, and meanwhile, the 10% evaporation temperature cannot meet the requirement of not higher than 80 ℃.
In the formula 3, when the content of the coal-based reformate is reduced to 15% and the content of the alkylated gasoline is increased to 30%, the distillation range of the blended product meets the index requirement, but the octane number of the blended product is 94, so that the octane number of the blended product still cannot meet the index requirement.
In the formula 4, part of coal-based naphtha with lower octane number in the formula 3 is replaced by coal-based reformate with higher octane number, and the octane number is found to be 96 at the moment, so that the index requirement is met, and meanwhile, the distillation range and vapor pressure properties are still in the index range.
In the formula 5, the content of the petroleum-based alkylated gasoline with high octane number is increased to 40 percent, the octane number is improved to 98, and meanwhile, the vapor pressure and distillation range indexes meet the requirements, and no obvious edge sticking condition exists.
In the formula 6, the content of the alkylated gasoline is further increased to 50%, and the octane number is increased to 102, which is found to be excessive in octane number margin and lower in economy compared to the index requirement of not less than 95, and at the same time, the blended product contains more C4 paraffin components than coal-based naphtha, which results in the initial boiling point of the blended product being lowered to 40.4 ℃, and the risk of the feathering or the out-of-specification is large, so that the content of the petroleum-based alkylated gasoline is suitably in the range of 30 to 40%.
In the case of the formulation 7, when the content of the coal-based reformed topping oil is increased to 30%, the initial boiling point of the product is 38.9 ℃, and the requirement of not less than 40 ℃ cannot be met, which is mainly caused by the high content of the C4 paraffin in the coal-based reformed topping oil.
In the formula 8, when the content of the coal-based reforming topping oil is reduced to 10%, the relative content of heavy components is increased due to excessive reduction of light components, so that the 10% evaporation temperature is unqualified, and therefore, in summary, the suitable range of the content of the coal-based reforming topping oil is 15-25%.
In the formula 9, when the content of the coal-based reformate is increased to 30% and the content of the coal-based reformate is 15%, the 10% evaporation temperature slightly exceeds the index due to the increase of the high-carbon components and the aromatic hydrocarbon components, and the 50% evaporation temperature is limited, so that the content of the coal-based reformate rich in heavy components is not more than 30%.
In the formula 10, the content of the coal-based reformate is reduced to 15%, and the product can meet the index requirements of octane number, vapor pressure and distillation range.
In the formula 11, the content of the coal-based reformate is further reduced to 10%, so that the initial boiling point of the product is reduced to 39.8 ℃, and the index requirement cannot be met, therefore, the proper range of the content of the coal-based reformate is 15-25%.
From the point of view of the comprehensive formula 1-11, the proper content of the coal-based naphtha is 15-25%.
When the content of the tetraethyl lead is reduced to form the formula 12, the octane number stuck edge exists, and the adding range of the tetraethyl lead is determined to be 2.4-3.2 g/kg in order to ensure that the octane number has certain allowance and index of the quality.
TABLE 6 measured octane number, vapor pressure and distillation range of coal-based aviation gasoline blending product # 95
Further physical and chemical properties were examined for formulations 4, 5, 10, 12 meeting octane, vapor pressure and distillation range requirements in accordance with GB1787-2018, the results of which are given in Table 7.
TABLE 7 basic physicochemical Properties of number 95 coal-based aviation gasolines of formulations 4, 5, 10, 12
From table 7, it can be seen that the physicochemical properties of the 95 # coal-based aviation gasoline blended by the formula 4, the formula 5, the formula 10 and the formula 12 all can meet the index requirements of GB1787-2018, and belong to the embodiments of the present invention.
Claims (12)
1. A No. 95 coal-based aviation gasoline composition comprises the following components in percentage by mass: 12-30% of coal-based reformate, 12-28% of coal-based reformed topping oil, 12-30% of coal-based naphtha, 25-50% of petroleum-based alkylated gasoline and 2.4-3.2 g/kg of tetraethyl lead.
2. The composition according to claim 1, wherein the composition comprises the following components by mass: 15-25% of coal-based reformed oil, 15-25% of coal-based reformed topping oil, 15-25% of coal-based naphtha, 30-40% of petroleum-based alkylated gasoline and 2.4-3.2 g/kg of tetraethyl lead.
3. The composition of claim 1, wherein the coal-based naphtha has a carbon number distribution of C4-C11, wherein the C6-C9 component accounts for more than 75%; the hydrocarbon composition comprises normal paraffin, isoparaffin, naphthene and aromatic hydrocarbon, wherein the proportion of naphthene is 65-75%, the proportion of normal paraffin and isoparaffin is 8-15%, and the content of aromatic hydrocarbon is less than 3%.
4. The composition of claim 1 wherein said coal-based naphtha production technology comprises: coal is directly liquefied to obtain liquefied oil, and the liquefied oil is subjected to hydrogenation modification and then fractionation to obtain the coal-based naphtha.
5. The composition of claim 1 wherein the coal-based reformate has a carbon number distribution of C5 to C11, wherein the C7 to C9 fraction is greater than 85%; the hydrocarbon composition comprises normal paraffin, isoparaffin, cyclane and aromatic hydrocarbon, wherein the aromatic hydrocarbon accounts for 70-80%, the isoparaffin accounts for 10-15%, and the normal paraffin and cyclane account for 2-10%.
6. The composition of claim 1, wherein the coal-based reformate production technology comprises: the coal is directly liquefied to obtain liquefied oil, the liquefied oil is subjected to hydrogenation modification, then the coal-based naphtha is obtained through fractionation, and heavy components of the coal-based naphtha after distillation are further sent to a catalytic reforming unit, so that the coal-based reformed oil is obtained.
7. The composition as claimed in claim 1, wherein the carbon number of the coal-based reformed topping oil is distributed between C4 and C7, wherein the C5 to C6 components account for more than 85%; the hydrocarbon composition comprises normal paraffin, isoparaffin, naphthene and aromatic hydrocarbon, wherein the naphthene accounts for 55-65%, the normal paraffin and isoparaffin account for 18-25%, and the aromatic hydrocarbon content accounts for less than 3%.
8. The composition of claim 1 wherein said coal-based reforming topping oil production technique comprises: the coal is directly liquefied to obtain liquefied oil, and then subjected to hydro-upgrading and fractionation to obtain coal-based naphtha, and the light components on the top of the tower after distillation before the coal-based naphtha is sent to a reforming reactor are the coal-based reforming topping oil.
9. The composition of claim 1 wherein said petroleum-based alkylated gasoline has a carbon number distribution of from about 4 to about 12, wherein the C8 isoparaffin content is from about 78 to about 88%, and the balance is predominantly isoparaffin having a carbon number of from about 12 to about 18%.
10. The composition of claim 1 wherein said petroleum-based alkylated gasoline is derived from alkylation technology in a petroleum refining process.
11. The composition of claim 1 wherein the tetraethyllead is present in a mixed solution generally with a halogenated hydrocarbon entrainer and has a weight fraction of tetraethyllead of 35 to 65%.
12. A preparation method of No. 95 coal-based aviation gasoline comprises the following steps:
(1) Mixing coal-based reformate, coal-based reformed topping oil, coal-based naphtha and petroleum-based alkylated gasoline according to the proportion, and uniformly stirring;
(2) Adding tetraethyl lead mixed solution into the compound gasoline prepared by blending in the step (1), and uniformly mixing to obtain a semi-finished product of No. 95 coal-based aviation gasoline;
(3) And (3) adding an antioxidant into the compound gasoline prepared in the step (2) according to the requirement, and uniformly mixing to obtain the finished product of the No. 95 coal-based aviation gasoline.
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| CN202110963014.3A CN115707761B (en) | 2021-08-20 | No. 95 coal-based aviation gasoline composition and preparation method thereof |
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| US3072562A (en) * | 1959-03-20 | 1963-01-08 | Socony Mobil Oil Co Inc | Method of producing gasoline having improved distribution of anti-knock capability |
| CN106833768A (en) * | 2017-02-10 | 2017-06-13 | 杜彪 | A kind of economical 94# gasoline of the low oil consumption of high energy efficiency |
| CN107057781A (en) * | 2016-12-27 | 2017-08-18 | 内蒙古晟源科技有限公司 | A kind of high density, high heating value jet fuel |
| CN108315060A (en) * | 2018-02-07 | 2018-07-24 | 河北新启元能源技术开发股份有限公司 | No. 91 unleaded aviation gasoline of one kind and its production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3072562A (en) * | 1959-03-20 | 1963-01-08 | Socony Mobil Oil Co Inc | Method of producing gasoline having improved distribution of anti-knock capability |
| CN107057781A (en) * | 2016-12-27 | 2017-08-18 | 内蒙古晟源科技有限公司 | A kind of high density, high heating value jet fuel |
| CN106833768A (en) * | 2017-02-10 | 2017-06-13 | 杜彪 | A kind of economical 94# gasoline of the low oil consumption of high energy efficiency |
| CN108315060A (en) * | 2018-02-07 | 2018-07-24 | 河北新启元能源技术开发股份有限公司 | No. 91 unleaded aviation gasoline of one kind and its production method |
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