CN1317550A - Clean gasoline containing alcohol and its preparing process - Google Patents
Clean gasoline containing alcohol and its preparing process Download PDFInfo
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- CN1317550A CN1317550A CN 00113778 CN00113778A CN1317550A CN 1317550 A CN1317550 A CN 1317550A CN 00113778 CN00113778 CN 00113778 CN 00113778 A CN00113778 A CN 00113778A CN 1317550 A CN1317550 A CN 1317550A
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- methyl alcohol
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Abstract
A clean gasoline containing methanol is prepared from light oil (65-73%), methanol (15-20%), and cosolvent C6-C9 (12-15%) through diluting coaltar with xylene, distilling the distilled liquid, catalytically cracking the separated arylhydrocarbon at 370 deg.C, rectifying to obtain C6-C9, mixing it with methanol, and mixing with light oil. Its advantages include high quantity of methanol dissolved in gasoline, high stability, and low content of CO and HC in tail gas.
Description
The invention belongs to a kind of vehicle fuel and promptly contain pure clean gasoline and preparation method thereof.
Along with people progressively strengthen the consciousness of environment protection; administer to pollute the overriding concern factor when having become that industrially developed country makes national policy and having carried out economic decision-making; especially aspect the obnoxious flavour of vehicle fuel burning back discharging; the strict especially control of various countries environmental administration; because scientific-technical progress; improving constantly of people's living standard and developing rapidly of automotive industry; the automobile pollution of China increases sharply; the consumption of vehicle fuel also increases day by day; so; the problem of the municipal pollution that motor vehicle exhaust causes is serious day by day; therefore, solving the pollution problem that motor vehicle exhaust causes is an important problem, be accompanied by global proposition doped fuel forbidding after; in order further to reduce because incomplete combustion causes the objectionable impurities in the tail gas, people are the important directions of oxygen containing clean fuel as fuel research from now on.Its main direction of studying concentrates on uses alcohols and ethers to add component as gasoline.The large industrial chemicals that is easy to get greatly because of the methyl alcohol amount of being, so, methyl alcohol is started to walk early as the development and use of automobile fuel, look into fresh condition from data: this research was abroad just once promoted the use of the beginning of the seventies, and once imagined originally and substitute gasoline with methyl alcohol and be directly used in motor car engine and make fuel, but through a large amount of evidences: methyl alcohol can not directly substitute gasoline and be used for motor car engine and make fuel, this is because the lower boiling influence of methyl alcohol, directly have influence on the startability and the accelerating ability of automobile, just must be if directly use methyl alcohol to act as a fuel to the carburettor of motor car engine, exhaust system could be used after transforming.Therefore, can only methyl alcohol and gasoline is miscible, replace a part of gasoline.But methyl alcohol solubleness in gasoline is limited, so practical application is the gasoline that contains small amount of methanol.China began to contain the research of methanol gasoline in 1978.See that by Inter network data request for information there are 21 families in the research institute that up to the present sets up the project, because methyl alcohol is slightly soluble in gasoline, so the research and development proposal that each family adopts all has difference, mainly reduce two classes, one class is to start with from the deployment device of methyl alcohol and gasoline, make methyl alcohol and gasoline emulsification form methanol gasoline, another kind of is to adopt solubility promoter to make methyl alcohol dissolving in of vast scale form methanol gasoline in the gasoline, but that class scheme all exists bigger problem it is applied and exists certain difficulty.That is: the intervention of a large amount of methyl alcohol 1,, with causing in the boiling range of methanol gasoline temperature value is that 50% index when distillating is too less than normal, thereby causes automobile engine starting poor, uses summer to produce air-resistance phenomenon etc., thereby engine must be adjusted its part-structure when use contains methanol gasoline.2, adopt the solubility promoter form to make methyl alcohol be dissolved in gasoline in a large number, its solubilization-aid effect is not really desirable, adopt the methyl alcohol solubility promoter can make methyl alcohol dissolve in the gasoline in a large number under certain condition, make methyl alcohol under this condition, reach dissolution equilibrium with gasoline, in case but condition has exceeded the hydrotropy scope, methyl alcohol easily separates with gasoline, moreover contains methanol gasoline in case also can separate with the methyl alcohol that dissolves in the methanol gasoline after gasoline product mixes.Thereby contain methanol gasoline and can only use separately, and can not mixing with processed oil, market-oriented popularization contains methanol gasoline must consider that methanol gasoline sets up the service station separately, it can't be realized need consuming a large amount of funds aspect the popularization that contains methanol gasoline like this.
The purpose of this invention is to provide a kind of pure clean gasoline and preparation method thereof that contains, after emphasis has solved and has contained methanol gasoline and mix (mix arbitrarily) with gasoline product, methyl alcohol is difficult for separating, and do not influence oil quality, make it can be applicable to various occasions and various vehicle, also need not transform existing service station.
The objective of the invention is following technical scheme realizes:
This contains pure clean gasoline, and it consists predominantly of light oil, methyl alcohol and methyl alcohol solubility promoter fraction, and the molecular formula of this solubility promoter is C
6-C
9, their percentage composition is respectively:
Light oil 65-73%
Methyl alcohol 15-20%
Methyl alcohol solubility promoter 12-15%
Also contain a small amount of octane promoter 1%.
Wherein this best blending amount that contains the various components of pure clean gasoline is respectively: light oil 67%, methyl alcohol 18%, methyl alcohol solubility promoter C
6-C
9Fraction 15%, octane promoter 1%.
A kind of preparation method who contains pure clean gasoline: it is characterized in that it has following steps:
1) methyl alcohol solubility promoter C
6-C
9Producing of fraction:
A, to coal tar oil handling (add xylene solvent blending), coal tar and dimethylbenzene are to mix at 1: 2, make its dissolve diluent;
B, diluent is carried out fractionation by distillation, obtain BTX aromatics;
C, BTX aromatics is carried out cracking under 370 ℃ temperature, (when cracking, being added with catalyzer aluminium sesquioxide and zinc oxide 1: 1);
Methyl alcohol solubility promoter C is isolated in d, rectifying
6-C
9Fraction.
2) methyl alcohol and solubility promoter C
6-C
9It is stand-by that the fraction mixing obtains mixture A,
3) lighter hydrocarbons are carried be so incensed that light oil, light oil mixes once more with mixture A, adds octane promoter simultaneously and obtains containing pure clean gasoline.
The present invention mainly is main raw material with light oil, adds component with methyl alcohol as containing oxygen cleaning,, distillation back treated with coal tar new fraction, through catalytic pyrolysis, the C that goes out through the cracking rectifying separation again
6-C
9Fraction contains pure clean type gasoline as the methyl alcohol solubility promoter through blending formation.The advantage that gained contains pure clean type gasoline is: mainly solved the mixed problem of methyl alcohol and light oil, can make a large amount of methyl alcohol be dissolved in light oil; Methyl alcohol can mix with gasoline product with the synthetic alcohol blended fuel of light oil endlessly in addition, and it is not easily separated to mix back methyl alcohol, gained gasoline good stability, transparent pollution-free.Also have because reasonable proportioning (main nail alcohol) and the processing method that adopts, and produce air-resistance phenomenon when having eliminated engine starting.See from boiling range analytical results lighter hydrocarbons:
| Boiling range | | 10％ | 20％ | 50％ | 70％ | 90％ | 95％ | Do |
| Data | ??32℃ | 49℃ | 54℃ | 87℃ | 116℃ | 152℃ | 174℃ | 194℃ |
| Octane value | ???58 |
If direct and C by lighter hydrocarbons
6-C
9Fraction mixes transfers gasoline, C
6-C
9Fraction is 25%, methyl alcohol is 20%, lighter hydrocarbons are 55%, its lightweight part is always excessive, like this when doing gasoline boiling range mensuration, 10% quantity of distillate, 50% quantity of distillate equitemperature point is on the low side, and the several index exceeding standards of volatilization loss amount are in the driving process of the test, its dynamic property, oil consumption is all undesirable, so the consideration employing is carried device of air the lightweight of lighter hydrocarbons is partly put forward the gas process in explained hereafter.
Because the octane value of light oil is lower, do not have the intervention of methyl alcohol, its octane value only is about 70, and the adding of methyl alcohol can make its octane value rise significantly, add-on is more than 15%, octane value can rise to about 80, and a large amount of interventions of methyl alcohol can make the quality of oil product be improved, theoretically, contain the intervention of hydroxyl in the methyl alcohol, equal to have added a large amount of oxygen in oil product, make oil product give full play to its heat energy, burning fully.Even the intervention of methyl alcohol is arranged, and does not have C
6-C
9The intervention of fraction, gained oil or undesirable, oil is muddy, poor stability, methyl alcohol is easily separated, the blowdown flow rate height.
With regard to the contrast of various testing data tables the stability that contains pure clean gasoline of gained of the present invention, characteristics such as bright and pollution-free are described below, further confirm the science of its prescription and Recipe thereof.
1, coal tar is after solvent treatment, separates to such an extent that BTX aromatics is mixed with light oil again and splashed into methyl alcohol, to measure it to the solute effect between methyl alcohol and light oil.Trial sheet is as follows:
2, with C before 220 ℃
6-C
9Fraction is measured it to the solute effect between methyl alcohol and light oil, and trial sheet is:
| Sequence number | Light oil (ml) | 220 ℃ of foreshots (BTX aromatics) (ml) | The methyl alcohol amount of splashing into (ml) | Phenomenon |
| ????1 | ????100 | ????10 | ????7.2 | Muddy |
| ????2 | ????100 | ????15 | ????8.9 | Muddy |
| ????3 | ????100 | ????20 | ????22.2 | Muddy |
| ????4 | ????100 | ????25 | ????28.6 | Muddy |
| ????5 | ????100 | ????30 | ????35.4 | Muddy |
| ????6 | ????100 | ????35 | ????40.3 | Muddy |
| ????7 | ????100 | ????40 | ????49.6 | Muddy |
| ????8 | ????100 | ????45 | ????58.4 | Muddy |
| ????9 | ????100 | ????50 | ????∞ | Transparent |
| Sequence number | Light oil (ml) | ?C 6-C 9Fraction (ml) | The methyl alcohol amount of splashing into (ml) | Phenomenon |
| ????1 | ????100 | ????15 | ????12 | Muddy |
| ????2 | ????100 | ????20 | ????53 | Muddy |
| ????3 | ????100 | ????25 | ????∞ | Transparent |
| ????4 | ????100 | ????30 | ????∞ | Transparent |
| ????5 | ????100 | ????35 | ????∞ | Transparent |
| ????6 | ????100 | ????40 | ????∞ | Transparent |
| ????7 | ????100 | ????45 | ????∞ | Transparent |
| ????8 | ????100 | ????50 | ????∞ | Transparent |
As seen from the experiment: BTX aromatics has the part solubilization-aid effect to methyl alcohol in light oil, but its solubilization-aid effect is undesirable, and is narrow to the receptive field of light oil, the C behind the employing catalytic pyrolysis
6-C
9Fraction, its receptive field broadness.
3, by the isolated BTX aromatics of coal tar and through 370 ℃ of isolating C of cracking
6-C
9Fraction respectively with the bulk testing of light oil, the synthetic alcohol gasoline of methyl alcohol and processed oil, (be do not stop to change under the situation of quantity of methyl alcohol carry out), its trial sheet is as follows: (1) at first is by synthetic alcohol gasoline of the isolating BTX aromatics of coal tar and the mixed state of processed oil:
(2) by aromatic hydrocarbons gained C after cracking
6-C
9Synthetic alcohol gasoline of fraction and the mixed state of processed oil:
| Sequence number | Light oil (ml) | BTX aromatics (ml) | Quantity of methyl alcohol (ml) | The gasoline amount of splashing into (ml) | Phenomenon |
| 1 | ?100 | ?50 | ?50 | ????16 | Muddy |
| 2 | ?100 | ?55 | ?50 | ????24 | Muddy |
| 3 | ?100 | ?60 | ?50 | ????25 | Muddy |
| 4 | ?100 | ?65 | ?50 | ????45 | Muddy |
| 5 | ?100 | ?70 | ?50 | ????∞ | Transparent |
| Sequence number | Light oil (ml) | C 6-C 9Fraction (ml) | Quantity of methyl alcohol (ml) | The gasoline amount of splashing into (ml) | Phenomenon |
| 1 | ?100 | ????25 | ????50 | ????∞ | Transparent |
| 2 | ?100 | ????30 | ????50 | ????∞ | Transparent |
| 3 | ?100 | ????35 | ????50 | ????∞ | Transparent |
| 4 | ?100 | ????40 | ????50 | ????∞ | Transparent |
| 5 | ?100 | ????45 | ????50 | ????∞ | Transparent |
Learn by above-mentioned test, the direct isolated BTX aromatics of coal tar, in doing methanol gasoline blending, its solubilization-aid effect is poor, have only add a large amount of BTX aromatics after, it could mix with gasoline product.Because of the intervention of macro-mixing aromatic hydrocarbons, cause HC quantity discharged increase in the motor vehicle exhaust, the alcohol blended fuel cost is risen greatly.And C
6-C
9The ratio of fraction in alcohol blended fuel only accounts on a small quantity, and alcohol blended fuel is mixed well with processed oil, and it all has solubilization-aid effect preferably to light vapour and gasoline product.
Methyl alcohol, C
6-C
9The add-on of fraction, light oil is to the boiling range of oil product, octane value, and density, dynamic property all have bigger influence, and we adopt orthogonal experiment, have determined the optimal addn of each material: methyl alcohol is 18%, C
6-C
9Be 15%, light oil is 67%.
Provided embodiments of the invention below:
Proportioning of the present invention is solubility promoter C
6-C
9Be 12-15%, methyl alcohol is 15-20%, and the light oil ratio is 65-73%, and the octane promoter add-on is 1%.
Than being that example is further set forth this working method that contains pure clean gasoline and process, get C with optimum formula
6-C
9Be 15%, methyl alcohol is 18%, and light oil is 67%, and octane promoter is 1%, and its compound method and process are (containing pure clean gasoline with blending 10kg are example):
1, methyl alcohol solubility promoter C
6-C
9Producing of fraction:
(1) coal tar is handled dilution, get coal tar 1.8kg and this 3.6kg of diformazan carries out mixed diluting, deposit in after stirring in the coal tar oil tank of 5000ml in 1: 2 ratio.
(2) the coal tar fluid after dilution enters and carries out fractionation by distillation in the still kettle, collects blending fraction aromatic hydrocarbons (at 110 ℃-380 ℃) 2.5kg, clears out of the dregs of fat, and this moment, solvent recuperation was mixed 80-110 ℃ of degree.
(3) blending fraction aromatic hydrocarbons is entered cleavage column and carry out catalytic pyrolysis, cracking temperature is 370 ℃, adopts the fixed-bed type molecular sieve catalytic, and pack into acidity of catalyst aluminium sesquioxide 5g and zinc oxide 5g mixture are to carry out cracking 2 hours under 370 ℃ at cracking temperature.
(4) the cracking after product is entered rectifying tower rectifying, isolate C
6-C
9Fraction 1.5kg and heavy fraction, C
6-C
9The separation temperature of fraction is 110-220 ℃, and the separation temperature of heavy fraction is 220-360 ℃, C
6-C
9Fraction is as the solubility promoter of methyl alcohol.
2, with methyl alcohol 1.8kg and solubility promoter C
6-C
9It is stand-by that fraction 1.5kg mixing obtains mixture A.
3, lighter hydrocarbons are got light oil after carrying gas, get light oil 6.7kg and add among the mixture A, add the octane promoter of 100ml simultaneously, mix to such an extent that 10 kilograms contain pure clean gasoline fully.
Wherein octane promoter is by industrial alcohol 90ml, propyl carbinol 5ml, and Virahol 5ml mixes in agitator after 20 minutes and forms octane promoter.
Fig. 1 is the reparation technology process of this gasoline:
Will be by C6-C
9The phenomenons such as fraction contains No. 60 20kg gasoline of pure clean gasoline and finished product with the 10kg that light oil and methyl alcohol form and mixes, and its effect is very good, and namely good stability separates without emulsification, nothing, and oil is transparent, boiling range analysis of experiments indices is all up to standard:
The technology quality index of product is referring to lower tabulation:
| Project | Index | Test oneself | Detect |
| Anti-knock index (RON+MON)/2 〉= | 85 | 85.10 | 90 |
| Lead content | 0.013 | Nothing | Nothing |
| Boiling range: | |||
| 10% recovered (distilled) temperature ℃≤ | 70 | 49 | 53 |
| 50% recovered (distilled) temperature ℃≤ | 120 | 94 | 118 |
| 90% recovered (distilled) temperature ℃≤ | 190 | 172 | 188 |
| End point of distillation % (V/V) ℃≤ | 205 | 195 | 193 |
| Residual quantity (V/V)≤ | 2 | 1.5 | 1 |
| The doctor test | By | By | |
| Induction period min≤ | 480 | ||
| Saturated vapour pressure Kpa≤ | 88 | 70 | |
| Sulfur content % (m/m)≤ | 0.15 | 0.02 | |
| Corrosion (copper sheet, ℃, 3h), level≤ | 1 | 1 | Meet the requirements |
| Water soluble acid or alkali | Nothing | Nothing | Nothing |
| Moisture content and mechanical admixture | Nothing | Nothing | Nothing |
| Density (20 ℃), kg/m3 | Actual measurement | 752 |
(2) actual road test and bench test;
The road performance test that contains pure clean gasoline is to use Shan K-01524, and Guangzhou product PEUGEOT505 type car carries out, and Motor Number is 06676G, and what mainly carry out is the road travel test, and the section of travelling is Xi'an---Yan'an, omnidistance 728km, and the test secundum legem:
GB/T12543-90＜automobile acceleration test method 〉
GB/T12545-90＜automotive fuel wastage test method(s) 〉
(1) minimum stabilizing speed is with originally basically identical;
(2) shift gears continuously the acceleration time than the original 0.3S of shortening from 0-90km/h;
(3) directly shift gears the acceleration time than the original 0.7S of shortening from 0-100km/h;
(4) hundred kilometers fuel consumption are with originally basically identical.
Through bench test:
When (1) engine used this gasoline, maximum power ratio increased 2.6KW originally, had improved 2.7%;
When (2) engine uses this gasoline, fuel economy and original basically identical;
When (3) engine used this gasoline, idling operation CO discharging had reduced by 16.1% than originally, and HC has reduced by 14.5% than originally.
Acceleration characteristics, minimum stabilizing speed and fuel consumption testing data the results are shown in down tabulation 1,2; Trial curve is seen Fig. 2,3.
Table 1 fuel consumption per hundred kilometers and minimum stabilizing speed
Table 2 acceleration test data
| Fuel | Average speed (km/h) | Hundred kilometers oil consumptions (kg) | Reduced rate (%) | Minimum stabilizing speed (km/h) |
| Gasoline | ????76.1 | ????7.5 | ????24.7 | |
| Alcohol gasoline | ????74.8 | ????7.6 | ????-1.3 | ????24.5 |
| Quicken the speed of a motor vehicle | Gasoline | Methanol gasoline | Time decreased | |
| The 0-90km/h gear shift is quickened | Time s | ?16.9 | ????16.6 | ????0.3 |
| Apart from m | ?262.4 | ????260.1 | ||
| The 30-90km/h direct high quickens | Time s | ?24.2 | ????23.5 | ????0.7 |
| Apart from m | ?391.8 | ????379.8 | ||
Claims (4)
1, a kind ofly contain pure clean gasoline, it is characterized in that it consists predominantly of light oil, methyl alcohol and methyl alcohol solubility promoter fraction, the molecular formula of this solubility promoter is C
6-C
9, their percentage composition is respectively:
Light oil 65-73%
Methyl alcohol 15-20%
Methyl alcohol solubility promoter 12-15%
2, according to claim 1ly contain pure clean gasoline, it is characterized in that this contains also contains a small amount of octane promoter 1% in the pure clean gasoline.
3, according to claim 2ly contain pure clean gasoline, it is characterized in that the best blending amount of the various components that this contains pure clean gasoline is respectively: light oil 67%, methyl alcohol 18%, methyl alcohol solubility promoter C
6-C
9Fraction 15%, octane promoter 1%.
4, a kind of preparation method who contains pure clean gasoline: it is characterized in that it has following steps:
1) methyl alcohol solubility promoter C
6-C
9Producing of part:
A, to coal tar oil handling (add xylene solvent blending), coal tar and the ratio of dimethylbenzene are to mix at 1: 2, make its dissolve diluent;
B, diluent is carried out fractionation by distillation, obtain BTX aromatics;
C, BTX aromatics is carried out cracking under 370 ℃ temperature, (when cracking, being added with catalyzer aluminium sesquioxide and zinc oxide 1: 1);
Methyl alcohol solubility promoter C is isolated in d, rectifying
6-C
9Fraction.
2) methyl alcohol and solubility promoter C
6-C
9It is stand-by that the fraction mixing obtains mixture A,
3) lighter hydrocarbons are carried be so incensed that light oil, light oil mixes once more with mixture A, adds octane promoter simultaneously and obtains containing pure clean gasoline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001137786A CN1155685C (en) | 2000-04-11 | 2000-04-11 | Clean gasoline containing alcohol and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001137786A CN1155685C (en) | 2000-04-11 | 2000-04-11 | Clean gasoline containing alcohol and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1317550A true CN1317550A (en) | 2001-10-17 |
| CN1155685C CN1155685C (en) | 2004-06-30 |
Family
ID=4583534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001137786A Expired - Fee Related CN1155685C (en) | 2000-04-11 | 2000-04-11 | Clean gasoline containing alcohol and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1155685C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324117C (en) * | 2004-07-26 | 2007-07-04 | 李容晚 | Alcohol gasoline |
| CN100463954C (en) * | 2006-12-06 | 2009-02-25 | 山西新源煤化燃料有限公司 | Vehicle gasoline for replacing petroleum fuel and its prepn process |
| CN114891543A (en) * | 2022-05-17 | 2022-08-12 | 兰州国信环境能源科技有限责任公司 | Method for synthesizing methanol diesel oil |
-
2000
- 2000-04-11 CN CNB001137786A patent/CN1155685C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324117C (en) * | 2004-07-26 | 2007-07-04 | 李容晚 | Alcohol gasoline |
| CN100463954C (en) * | 2006-12-06 | 2009-02-25 | 山西新源煤化燃料有限公司 | Vehicle gasoline for replacing petroleum fuel and its prepn process |
| CN114891543A (en) * | 2022-05-17 | 2022-08-12 | 兰州国信环境能源科技有限责任公司 | Method for synthesizing methanol diesel oil |
| CN114891543B (en) * | 2022-05-17 | 2024-03-22 | 兰州国信环境能源科技有限责任公司 | Method for synthesizing methanol diesel oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1155685C (en) | 2004-06-30 |
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