CN1308119A - Gasoline additive - Google Patents

Abstract

The present invention relates to additives for gasoline, and is characterized by utilizing synergistic reaction of multiple components, and using alcohol ester, active arene, polyhydroxy-compound, oligomer, rare earth and several element organic compounds to regulate its content so as to raise octane value of oil product, reduce content of harmufl gas in the tail gas and attain the goal of improving property of gasoline.

Description

A kind of gasoline dope

The invention belongs to the petroleum products additive agent field.

After motor car engine was asked the city, for improving the efficiency of combustion of engine, people were at the compression ratio of trying every possible means to improve motor car engine.From compression ratio 4.0, progressively increase to 10.8.Although increased efficiency of combustion, power descends to some extent.The present engine compression ratio that adopts in the world fixes within 8.0 the scope substantially.For reaching this purpose, the domestic and international octane value that has all adopted several different methods to improve gasoline is to satisfy the requirement of engine compression ratio.More extensive adopted method is to sneak into a small amount of antiknock dope in gasoline.Early stage adopted octane promoter is the product-tetraethyllead of U.S.'s ethyl corporation.Along with the application of tetraethyllead, caused severe contamination to environment.As, in the soil of the highway both sides of the U.S., lead content has surpassed more than 100 times of standard.For solving the Lead contamination problem, people are devoted to the scientific research of white gasoline octane promoter always for many years, and a series of white gasoline octane promoter products such as MMT and MTBE are exactly to arise at the historic moment thus.Simultaneously, people have also carried out a lot of improvement again on oil refining process, as, cracking unit oil refining is urged in wide-scale adoption, to increase alkene, the aromaticity content of oil product, improves the octane value of oil product with this, can thoroughly solve the problem of vehicle exhaust Lead contamination again simultaneously.

Above terms of settlement though can solve problem such as Lead contamination, obviously also exists the shortcoming of several respects:

One is that olefin(e) centent is too high, and when vehicle burnt, the attached collection of polymkeric substance that is produced by high-temperature and high-pressure conditions was at the nozzle place, causes poorly sealedly, and makes the vehicle burning insufficient, discharges a large amount of hydrocarbon polymers, causes tail gas pollution.Country clearly stipulates oil product olefin(e) centent 35% now, and Beijing, Shanghai, Guangzhou San Shi are strict with, and non-clean gasoline is forbidden to enter the market.If execution is imitateed in other cities, estimate about triennium that refineries such as big petrochemical industry, grand celebration dragon and phoenix will not have qualified oil product and dispatch from the factory.

Its two, be the octane promoter MMT that in oil product, adds, and antiknock dope MTBE, will cause bigger pollution to environment, the former directly impacts people and other biology because the discharging of element M n is arranged, the forbidding so country in 1998 has ordered.Latter MTBE in use discharges pollutent soluble in water, the various water sources of severe contamination, and some produces the producer of MTBE, although strict control evaporating, emitting, dripping or leaking of liquid or gas, but underground water still can't be drunk.So the U.S. has made laws and has forbidden MTBE.China also will correspondingly make laws.

Purpose of the present invention just provides a kind of the minimizing and produces the detonation material, satisfies the gasoline dope of environmental protection and clean gasoline requirement simultaneously.

Technical conceive of the present invention is to fully take into account the various factors of oil product in intravital combustion processes of cylinder and generation detonation.The effect of blocking-up detonation is placed on and lures in the combustion phase.Under the different temperature condition that lures in the combustion phase, adopt multiple blocking-up thing, reach the effect of boosting of octane rating.Simultaneously, the present invention also considers the requirement of environmental protection and clean gasoline, has increased the additive of functions such as having cleaning, combustion-supporting again to a certain extent, makes gasoline in whole combustion processes, has suppressed the generation of nuisance and the abundant release of combustion energy.

The present invention mainly considers the property of multiple organic clement compounds such as carboxylic acid esters, activated arene, polyol and rare earth element, adjusts content separately, reaches its intended purposes.

The present invention is made up of benzene, toluene, benzene mixed, mixed butyl alcohol, activated arene, carboxylicesters, oligopolymer, mishmetal and non-metallic element organic compound.

Its ratio is benzene 2-5%, toluene 30-40%, benzene mixed 30-35%, mixed butyl alcohol 8-15%, activated arene 5-10%, carboxylicesters 20-35%, oligopolymer 5-10%, mishmetal and non-metallic element organic compound 1-5%.

Activated arene is methyl tert-butylbenzene and derivative thereof.

Carboxylicesters X=C ₃～C ₄Alkyl.

Effect of the present invention is the octane value that has improved oil product, has reduced content of harmful gas in the tail gas, has reached the comparatively ideal purpose of improving the gasoline performance.

Embodiment 1

In the refinery gasoline sample of grand celebration woods source, add this additive:

Samples weighed urges gasoline to add 2 ‰ additives adding 3 ‰ additives and add 4 ‰ additive octane value-organons 88.6 90.6 91.3 92.2

Embodiment 2

In Dalian Petro-Chemical Company's gasoline sample, add this additive:

Samples weighed urges gasoline to add 3 ‰ additive octane value-organons, 90.5 93.3 octane values-motor method 78.6 80.1

Embodiment 3

In the petrochemical industry gasoline sample of Maoming, add this additive:

Samples weighed urges gasoline to add 3 ‰ additive octane value-organons, 90 94.4 anti-knock indexs-MON+RON/2 85 88.1

Embodiment 4

Add this additive in Karamay oilfield is recovered the oil five factory's condensate oil samples: the sample condensate oil adds 5% additive octane value-MON 66.7 89.2

Embodiment 5

Urge in the pressure gasoline sample in Liaohe Oil Field general petrochemicals factory and to add this additive: the sample catalytic gasoline adds 1 ‰ additives and adds 2 ‰ additives and add 3 ‰ additive octane values, 89.5 91.0 92.0 92.6 samples and add 4 ‰ additives and add 5 ‰ additive octane values 93.2 93.6

Embodiment 6

Environmental monitoring junction centre in Fujian Province's carries out the exhaust emissions comparison and detection to the gasoline and the gasoline former state of the allotment of this additive: No. 90 gasoline former state allotments of test item gasoline reduced rate (%) CO-% 2.0 1.5 25HC-ppm 230 200 13.0

Claims (4)

1, a kind of gasoline dope is characterized in that, is made up of benzene, toluene, benzene mixed, mixed butyl alcohol, activated arene, carboxylicesters, oligopolymer, mishmetal and non-metallic element organic compound.

2, a kind of gasoline dope according to claim 1, it is characterized in that, ratio is benzene 2-5%, toluene 30-40%, benzene mixed 30-35%, mixed butyl alcohol 8-15%, activated arene 5-10%, carboxylicesters 20-35%, oligopolymer 5-10%, mishmetal and non-metallic element organic compound 1-5%.

3, a kind of gasoline dope according to claim 1 and 2 is characterized in that, activated arene is methyl tert-butylbenzene and derivative thereof.

4, a kind of gasoline dope according to claim 1 and 2 is characterized in that carboxylicesters X=C ₃～C ₄Alkyl.