CN115707761B - 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 118
- 239000003502 gasoline Substances 0.000 title claims abstract description 70
- 239000000203 mixture Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title 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
- 238000002156 mixing Methods 0.000 claims description 27
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 17
- 238000004821 distillation Methods 0.000 claims description 16
- 238000002407 reforming Methods 0.000 claims description 16
- 238000005516 engineering process Methods 0.000 claims description 15
- 239000004215 Carbon black (E152) Substances 0.000 claims description 14
- 229930195733 hydrocarbon Natural products 0.000 claims description 14
- 150000002430 hydrocarbons Chemical class 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 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
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 4
- 238000001833 catalytic reforming Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 230000029936 alkylation Effects 0.000 claims description 3
- 238000005804 alkylation reaction Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 150000008282 halocarbons Chemical class 0.000 claims description 2
- 238000005504 petroleum refining Methods 0.000 claims description 2
- 230000008569 process Effects 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
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 20
- 239000003921 oil Substances 0.000 description 20
- 150000001924 cycloalkanes Chemical class 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 150000001336 alkenes Chemical class 0.000 description 4
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007841 coal based oil Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000012188 paraffin wax Substances 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
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 230000008859 change Effects 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
- 238000009826 distribution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 naphthene hydrocarbon Chemical class 0.000 description 1
- ISUBZZYLOBVUCH-UHFFFAOYSA-N octane tetraethylplumbane Chemical compound CCCCCCCC.CC[Pb](CC)(CC)CC ISUBZZYLOBVUCH-UHFFFAOYSA-N 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution 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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Abstract
The invention relates to a No. 95 coal-based aviation gasoline composition, which comprises the following components in terms of total mass: 12-30% of coal-based reformate, 12-28% of coal-based reformate topped 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 evenly mixed to prepare the finished product. Compared with the prior art, the No. 95 coal-based aviation gasoline mainly uses coal as a raw material source, widens the raw material source of No. 95 aviation gasoline, and can meet all index requirements of GB 1787-2018 aviation piston engine fuel on No. 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 armed helicopters in the military field, unmanned aerial vehicles, primary coaches, and agricultural aircraft in the general aviation field, meteorological engines, exploration engines, and the like. Compared with developed countries such as Europe and America, the development of the general aviation field of China is slow, the general aviation aircrafts and general aviation airports are only less than 5% of the United states, but with the gradual advancement of low-altitude airspace management reform of China, the general aviation aircrafts continuously develop at a high speed at an increase rate of more than 20% per year. Correspondingly, aviation gasoline is used as fuel in the general aviation field, the consumption of aviation gasoline also keeps the growth rate of more than 15%, and the high-speed growing consumption demand is still kept in the future. Therefore, the field attracts much research attention, for example, patent CN 104673409B proposes a lead-free and high-quality clean aviation gasoline, which can reach more than 95 motor octane number without adding lead, but the blending components are mostly pure component petrochemical products, the cost is high, the blending products are not suitable for refinery production, and only the physicochemical properties of motor octane number, distillation range, vapor pressure, freezing point and water reaction volume change of the blending products are examined, but other physicochemical properties are not examined.
In GB 1787-2018 aviation piston engine fuel, 5 types of aviation gasoline are specified, namely 75 # aviation gasoline, 95 # aviation gasoline, 100 # aviation gasoline, 91 # aviation gasoline and 100 # aviation gasoline, and all components are derived from petroleum. The No. 95 aviation gasoline is produced by petrochemical industry in Lanzhou of China, has annual output of about 10000 tons and is used for a large piston type aviation engine with a supercharger.
Along with the continuous high consumption demand in the aviation gasoline field, along with the adjustment of the energy structure in China and the new requirements for guaranteeing the energy safety, the preparation of aviation gasoline by taking coal as a raw material provides a corresponding solution. Under the continuous high consumption demand background in the field of aviation gasoline, the dependence degree of petroleum import in China is over 70 percent, and the aviation gasoline produced by taking petroleum as a raw material is facing a serious energy source guarantee problem. In addition, in recent years, the international situation is complex, the development of global economy and politics is unstable and the uncertainty is greatly increased, the western countries block and sanctions on the world, particularly the united states forms a great threat to the safety of oil and gas import channels of China, and the petroleum supply becomes the biggest elbow of the national energy safety and national defense safety, so that the guarantee of the energy safety supply becomes a serious problem facing the country. The development of coal-based fuels would solve this outstanding problem, wherein coal-based aviation gasolines would provide a stable, safe energy supply for active piston helicopters, unmanned aerial vehicles, etc.
Patent CN 109679692a proposes an aviation blend oil and a preparation method thereof, the preparation method comprises: fractionating the direct coal liquefaction naphtha to obtain a C6-product and a C7+ product; carrying out catalytic reforming reaction on a C7+ product to obtain mixed aromatic hydrocarbon; and mixing the mixed aromatic hydrocarbon, the mixed carbon five, the methyl tertiary butyl ether and the isooctane to obtain the aviation blend oil. The method examines the motor octane number, sulfur content, distillation range, saturated vapor pressure and aromatic hydrocarbon content of the blended product, but does not examine other important indexes such as freezing point, acidity and the like, and the heat value of the blended product cannot meet the index requirements because the blended product contains more methyl tertiary butyl ether, and the blended product cannot be directly used as aviation gasoline.
Coal is used as raw material, coal-based aviation gasoline blending components such as coal-based reformate, coal-based reforming topped oil, coal-based naphtha, petroleum-based alkylated gasoline and the like can be prepared through coal liquefaction technology including direct coal liquefaction technology and indirect coal liquefaction technology, and further secondary processing processes including distillation cutting, catalytic reforming and the like, but how to blend the aviation gasoline meeting national standard requirements by using the blending components is difficult because the composition of fuel components prepared by a coal-based oil line is relatively single, for example, the components prepared by the direct coal liquefaction line are mainly composed of aromatic hydrocarbon and naphthene hydrocarbon; while the indirect coal liquefaction route is prepared by using paraffin as a main material, the fuel is a mixture of different hydrocarbon components, and a plurality of performance indexes are required to be simultaneously considered. Therefore, how to select proper blending components and determine the respective content, and utilize coal-based blending components as much as possible to blend various indexes meeting national standard requirements is a new subject in the field.
Disclosure of Invention
Aiming at the current situation that the raw material sources of the existing No. 95 aviation gasoline are only petroleum and the raw material structure is single, the invention provides a coal-based aviation gasoline composition meeting various index requirements of the No. 95 aviation gasoline and a preparation method thereof, wherein the ratio of coal-based blending components can be higher than 60%.
A No. 95 coal-based aviation gasoline composition comprises the following components in terms of total mass: 12-30%, preferably 15-25% of coal-based reformate; 12-28%, preferably 15-25% of coal-based reforming topped oil; 12-30%, preferably 15-25% of coal-based naphtha; 25-50%, preferably 30-40% of petroleum-based alkylated gasoline; the adding amount of tetraethyl lead is 2.4-3.2 g/kg.
The composition of the invention may contain an appropriate amount of antioxidant, and the amount of antioxidant added may be 20 to 50mg/L, preferably 20 to 30mg/L.
Wherein the carbon number of the coal-based naphtha is distributed between C4 and C11, and the proportion of C6 to C9 components is more than 75 percent; the hydrocarbon composition comprises normal paraffins, isoparaffins, naphthenes and aromatic hydrocarbons, wherein the main components are naphthenes, the ratio is 65-75%, the ratio of the normal paraffins and isoparaffins is 8-15%, and the content of the aromatic hydrocarbons is lower than 3%.
The coal-based naphtha production technology comprises, but is not limited to, a direct coal liquefaction technology and a hydro-upgrading technology, and can be specifically obtained by the following method: the coal is directly liquefied to obtain liquefied oil, and is further subjected to hydro-upgrading and then fractionation to obtain coal-based naphtha.
Wherein the carbon number of the coal-based reformate is distributed between C5 and C11, and the C7 to C9 components account for more than 85 percent; the hydrocarbon composition comprises normal paraffins, isoparaffins, naphthenes and aromatic hydrocarbons, wherein the main components are aromatic hydrocarbons with the proportion of 70-80%, the secondary components are isoparaffins with the proportion of 10-15%, and the normal paraffins and naphthenes with the lowest proportion are 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 specifically obtained by the following method: the coal is directly liquefied to obtain liquefied oil, the liquefied oil is further subjected to hydro-upgrading, then coal-based naphtha is obtained through fractionation, and the heavy components of the distilled coal-based naphtha are further sent to a catalytic reforming unit to obtain coal-based reformate.
Wherein the carbon number of the coal-based reforming topped oil is distributed between C4 and C7, and the proportion of C5 to C6 components is more than 85 percent; the hydrocarbon composition comprises n-alkane, isoparaffin, naphthene and arene, wherein the main hydrocarbon composition is naphthene, the ratio of which is 55-65%, and the second hydrocarbon composition is n-alkane and isoparaffin, the ratio of which is 18-25%, and the content of arene is lower than 3%.
The coal-based reforming topped oil production technology comprises, but is not limited to, a direct coal liquefaction technology and a hydro-upgrading technology, and can be specifically obtained by the following method: the liquefied oil is obtained after the direct liquefaction of the coal, the coal-based naphtha is obtained through hydro-upgrading and fractionation, and the overhead light component obtained after the distillation before the coal-based naphtha is sent to the reforming reactor is the coal-based reforming topped oil.
Wherein, the carbon number of the petroleum-based alkylated gasoline is distributed in C4-C12, wherein the petroleum-based alkylated gasoline is mainly C8 isoparaffin, the ratio is 78-88%, the rest is mainly other carbon number isoparaffin, and the ratio is 12-18%. The petroleum-based alkylated gasoline is derived from alkylation technology in petroleum refining.
Wherein, the tetraethyl lead and halogenated hydrocarbon entrainer (such as 1, 2-dibromoethane) generally form mixed solution, wherein the mass fraction of the tetraethyl lead is 35-65 percent.
Wherein the antioxidant can be selected from one or more of 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 the coal-based reformate, the coal-based reformed topped oil, the coal-based naphtha and the 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 semi-finished 95 # coal-based aviation gasoline;
(3) And (3) adding an antioxidant into the compound gasoline prepared by blending in the step (2) according to the requirement, and uniformly mixing to obtain the finished 95 # coal-based aviation gasoline.
The invention has the following advantages:
The application creatively provides a product which fully meets the requirements of various indexes of No. 95 aviation gasoline in GB 1787-2018 aviation piston engine fuel by blending the coal-based gasoline blending component and the petroleum-based alkylation gasoline component, wherein the ratio of the coal-based blending component is higher than 60%. The application widens the raw material sources of No. 95 aviation gasoline, is beneficial to enriching the energy structure of aviation gasoline, ensures the energy safety of China, has lower cost and simple preparation method, and has industrial application prospect and remarkable social benefit.
Detailed Description
Specific embodiments of the present invention are further described below with reference to examples.
Among the following blended products, coal-based reformate topped oil and coal-based naphtha are coal-based oil products of China petrochemical institute of petrochemicals; petroleum-based alkylated gasolines are products of the yankee refinery.
Microscopic hydrocarbon compositions and carbon number distributions of coal-based reformate, coal-based naphtha, petroleum-based alkylate are listed in tables 1,2, 3, and 4.
TABLE 1 coal-based reformate molecular composition
| Carbon number | N-alkanes | Isoparaffin(s) | Olefins | Cycloalkane (CNS) | Aromatic hydrocarbons | Totals to |
| 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 |
| Totals to | 5.99 | 13.36 | 0.04 | 6.93 | 74.08 | 99.91 |
Table 2 molecular composition of coal-based reformed topped oil
| Carbon number | N-alkanes | Isoparaffin(s) | Olefins | Cycloalkane (CNS) | Aromatic hydrocarbons | Totals to |
| 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 |
| Totals to | 18.89 | 19.59 | 0.00 | 60.39 | 1.14 | 100.01 |
TABLE 3 coal-based naphtha molecular composition
| Carbon number | N-alkanes | Isoparaffin(s) | Olefins | Cycloalkane (CNS) | Aromatic hydrocarbons | Totals to |
| 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 |
| Totals to | 12.56 | 13.74 | 0.00 | 72.37 | 1.24 | 99.9 |
TABLE 4 Petroleum-based alkylated gasoline molecular composition
| Carbon number | N-alkanes | Isoparaffin(s) | Olefins | Cycloalkane (CNS) | Aromatic hydrocarbons | Totals to |
| 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 |
| Totals to | 3.76 | 96.03 | 0.00 | 0.03 | 0.03 | 99.85 |
Formulas 1-12
The four components of coal-based reformate, coal-based reformate topped oil, coal-based naphtha and petroleum-based alkylate were blended in the blending ratios listed in table 5, with the addition of a tetraethyl lead octane improver.
Table 5 No. 95 coal-based aviation gasoline blending formula
For a new aviation gasoline, the physicochemical properties that are preferentially investigated can be octane number, distillation range and vapor pressure, so that the products after blending the formulas 1-12 are firstly tested for octane number, distillation range and vapor pressure, and the results are shown in Table 6 and compared with the corresponding quality indexes in GB 1787-2018.
As can be seen from table 6: for formula 1, when petroleum-based alkylated gasoline blending components are not added, the octane number of the blended product is 85, the index requirements of no less than 95 cannot be met, the difference is far, and the 90% evaporation temperature is 149.5 ℃ and higher than 145 ℃.
For formula 2, when 20% of the alkylated gasoline is added, the octane number of the product is obviously improved to 92, but the product is still disqualified, and meanwhile, the 10% evaporation temperature cannot meet the requirement of 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 is 94, and 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, the octane number is found to be 96 at the moment, the index requirement is met, and the distillation range and vapor pressure properties are still in the index range.
In formula 5, the content of the petroleum-based alkylated gasoline with high octane number is increased to 40%, the octane number is increased to 98, the vapor pressure and the distillation range index meet the requirements, and no obvious clamping situation exists.
In formula 6, the content of the alkylated gasoline is further increased to 50%, the octane number is increased to 102, compared with the index requirement of over 95, the octane number is excessive, the economy is reduced, and meanwhile, compared with coal-based naphtha, the alkylated gasoline contains more C4 paraffin components, so that the initial distillation point of the blended product is reduced to 40.4 ℃, the risk of stuck edge or disqualification is high, and therefore, the suitable range of the petroleum-based alkylated gasoline content is 30-40%.
For formula 7, when the content of the coal-based reforming topped oil is increased to 30%, the initial distillation point of the product is 38.9 ℃, and the requirement of lower and upper than 40 ℃ cannot be met, mainly because of the fact that the content of C4 alkane in the coal-based reforming topped oil is more.
In the formula 8, when the content of the coal-based reforming topped oil is reduced to 10%, the light component is reduced too much, the relative content of the heavy component is increased, and the evaporation temperature is not qualified by 10%, so that the content of the coal-based reforming topped oil is suitably 15-25% in combination.
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 content of the heavy component-enriched coal-based reformate is not more than 30% because the increase of the high-carbon components and the aromatic components causes that the 10% evaporation temperature slightly exceeds the index and the 50% evaporation temperature is blocked.
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 distillation point of the product is reduced to 39.8 ℃ and the index requirement cannot be met, and therefore, the suitable range for the content of the coal-based reformate is 15-25%.
From the comprehensive formula 1-11, the proper content of the coal-based naphtha is 15-25%.
When the content of tetraethyl lead is reduced to form a formula 12, the situation that the octane number is blocked is found, and the adding range of the tetraethyl lead is 2.4-3.2 g/kg in order to ensure a certain margin of octane number and index of quality.
Table 6 No. 95 coal-based aviation gasoline blending product measured octane number, vapor pressure and distillation range
For formulations 4,5, 10, 12 meeting octane number, vapor pressure and distillation range requirements, further physicochemical properties were examined according to GB1787-2018, the results of which are shown in Table 7.
Table 7 basic physicochemical Properties of No. 95 coal-based aviation gasoline of formulations 4, 5, 10, 12
As can be seen from table 7, each physicochemical property of the 95 # coal-based aviation gasoline obtained by blending the formula 4, the formula 5, the formula 10 and the formula 12 can meet the index requirements of GB 1787-2018, and the invention belongs to the embodiment of the invention.
Claims (8)
1. A No. 95 coal-based aviation gasoline composition comprises the following components in terms of total mass: 12-25% of coal-based reformate, 20-28% of coal-based reformate topped oil, 20-25% of coal-based naphtha, 25-40% of petroleum-based alkylated gasoline, and 2.4-3.2 g/kg of tetraethyl lead, wherein the carbon number of the coal-based reformate is distributed in C5-C11, wherein the carbon number of C7-C9 components accounts for more than 85%, the hydrocarbon composition of the coal-based reformate comprises normal paraffins, isoparaffins, naphthenes and aromatics, wherein the aromatic hydrocarbons account for 70-80%, the isoparaffins account for 10-15%, the normal paraffins and naphthenes account for 2-10%, and the sum of the hydrocarbon accounts for 100%; the carbon number of the coal-based reforming topped oil is distributed in C4-C7, wherein the proportion of C5-C6 components is more than 85%, the hydrocarbon composition of the coal-based reforming topped oil comprises n-alkane, isoparaffin, naphthene and arene, wherein the proportion of naphthene is 55-65%, the proportion of n-alkane and isoparaffin is 18-25%, the proportion of arene is less than 3%, and the sum of the hydrocarbon proportions is 100%; the carbon number of the coal-based naphtha is distributed in C4-C11, wherein the proportion of C6-C9 components is more than 75%, the hydrocarbon composition of the coal-based naphtha comprises normal paraffins, isoparaffins, naphthenes and aromatics, wherein the proportion of naphthenes is 65-75%, the proportion of normal paraffins and isoparaffins is 8-15%, the proportion of aromatics is less than 3%, and the sum of the proportion of each hydrocarbon is 100%; the carbon number of the petroleum-based alkylated gasoline is distributed in C4-C12, wherein the C8 isoparaffin accounts for 78-88%, the rest is mainly other carbon number isoparaffin, and the carbon number accounts for 12-18%.
2. The composition according to claim 1, wherein the composition comprises the following components in terms of total mass of the composition: 15-20% of coal-based reformate, 20-25% of coal-based reformate topped oil, 20-25% of coal-based naphtha, 30-40% of petroleum-based alkylated gasoline, and the addition amount of tetraethyl lead is 2.4-3.2 g/kg.
3. The composition of claim 1 wherein said coal-based naphtha production technique comprises: the coal is directly liquefied to obtain liquefied oil, and then is subjected to hydro-upgrading and fractionation to obtain coal-based naphtha.
4. The composition of claim 1, wherein the coal-based reformate production technique comprises: the coal is directly liquefied to obtain liquefied oil, then is subjected to hydro-upgrading, then is subjected to fractionation to obtain coal-based naphtha, and the heavy components of the distilled coal-based naphtha are further sent to a catalytic reforming unit to obtain coal-based reformate.
5. The composition of claim 1 wherein said coal-based reforming topper oil production technique comprises: the liquefied oil is obtained after the direct liquefaction of the coal, the coal-based naphtha is obtained through hydro-upgrading and fractionation, and the overhead light component obtained after the distillation before the coal-based naphtha is sent to the reforming reactor is the coal-based reforming topped oil.
6. The composition of claim 1 wherein said petroleum-based alkylate gasoline is derived from alkylation technology in a petroleum refining process.
7. The composition according to claim 1, wherein the tetraethyl lead and the halogenated hydrocarbon entrainer form a mixed solution, and the mass fraction of the tetraethyl lead is 35-65%.
8. The method for preparing the No. 95 coal-based aviation gasoline of claim 1, comprising:
(1) Mixing the coal-based reformate, the coal-based reformed topped oil, the coal-based naphtha and the petroleum-based alkylated gasoline according to the proportion, and uniformly stirring;
(2) Adding tetraethyl lead mixed solution into the blended gasoline prepared in the step (1), and uniformly mixing to obtain semi-finished 95 # coal-based aviation gasoline;
(3) And (3) adding an antioxidant into the compound gasoline prepared by blending in the step (2) according to the requirement, and uniformly mixing to obtain the finished 95 # coal-based aviation gasoline.
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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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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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