CN107541303A - A kind of alcohol-oil fuel and preparation method thereof - Google Patents

Abstract

The invention discloses a kind of alcohol-oil fuel and preparation method thereof, the raw material that the alcohol-oil fuel includes following volume fraction is made：Low-carbon alcohols 20 40%；Gasoline 60 80%；Nitromethane 0.8 2%；Cosolvent 0.3 1%；The cosolvent is prepared from the following raw materials in parts by weight：90 00 parts of lubricating oil, 0.5 2 parts of antioxidant, 0.5 2 parts of lanthanide rare metal, the lubricating oil are IC engine lubricating oil oily based on mineral oil, preferably gasoline engine SF levels machine oil, diesel engine CD level machine oil；The antioxidant is BHT, Diphenylamine Antioxidant or 3,7 diisooctyl phenthazine；The lanthanide rare metal is lanthanum, praseodymium or erbium；The alcohol-oil fuel not only solves the problem of alcohol-oil fuel is separated, and the energy discharged during burning is suitable with gasoline, discharges pollutants and is greatly reduced, charcoal discharge capacity significantly reduces.

Description

A kind of alcohol-oil fuel and preparation method thereof

Technical field

The present invention relates to liquid fuel field, more particularly to a kind of alcohol-oil fuel and preparation method thereof.

Background technology

Currently, in domestic Vehicular methanol petrol and ethanol petrol allocating technology, to make methanol, ethanol and gasoline, dissolving each other, Need to add cosolvent wherein to improve its stability, the addition of various cosolvents, methanol fuel can be greatly lowered Phase separation temperature, substantially alleviate the production of methanol fuel, the intermiscibility contradiction in.But the cosolvent developed is most It is made up of the different organic matters such as polyalcohol, aromatic hydrocarbons, esters and ethers, there is following point：Less stable, it is unfavorable for first Alcohol gasoline is stored for a long time, lamination easily occurs compared with cryogenic region in the winter time；Versatility is not strong, and most cosolvents aim at a certain model Methanol gasoline configures, and it is most for methanol content it is relatively low or higher in the case of；Water resistant phase separation performance is poor, Xuzhou Yong Sheng Energy Section Skill Co., Ltd methanol vapor additive only has M15 report, and economic benefit is not high, is added into M40 methanol gasolines equal Under experimental condition, meet the placement of water 0.5% and turbid phenomenon occur in 10 days, put in -35 DEG C of low temperatures and occur within 6 hours to be separated now As being restricted the popularization and application of methanol gasoline.

Improve at present in the research of methanol gasoline resisting phase separation performance and many deficiencies also be present：1st, only managed from resisting phase separation Proposed a plan by angle, can not consider in additive addition vehicle fuel adapt to engine, vehicle needs and tail gas The environment of discharge influences, and additive part material is unfavorable for the dirty development trend of vehicle fuel emission reduction drop；2nd, the preparation of additive Complex process, it is less economical；3rd, the part material of additive is unprocessed using residue raffinate, and toxic and exhaust emissions is exceeded Risk.

The content of the invention

For the problem present on, the invention provides a kind of alcohol-oil fuel, not only solves alcohol-oil fuel phase separation The problem of, and the energy discharged during burning is suitable with gasoline, i.e., and one liter of fuel is equal to one liter of pure gasoline and used.Discharge pollutants It is greatly reduced, charcoal discharge capacity significantly reduces.

Technical scheme is as follows：

A kind of alcohol-oil fuel, including the raw material of following volume fraction are made：

Low-carbon alcohols 20-40%；

Gasoline 60-80%；

Nitromethane 0.8-2.0%；

Cosolvent 0.3-1%；

The cosolvent is prepared from the following raw materials in parts by weight：Lubricating oil 90-00 parts, antioxidant 0.5-2 parts, group of the lanthanides Rare earth metal 0.5-2 parts, the lubricating oil are IC engine lubricating oil oily based on mineral oil, preferably gasoline engine SF levels machine Oil, diesel engine CD level machine oil；The antioxidant is BHT, Diphenylamine Antioxidant or 3,7- diisooctyl phenthazine；The lanthanum It is that rare earth metal is lanthanum, praseodymium or erbium.

The preparation method of the cosolvent is as follows：All raw materials are heated to 85-200 DEG C, insulation 24- under anaerobic 48h, is cooled to room temperature, and the liquid particle of concentration, separation, removing more than 5 microns produces the cosolvent.

The low-carbon alcohols are methanol or ethanol；

The alcohol-oil fuel, is made using following methods：

(1) cosolvent is reconciled and stirred in proportion with nitromethane；

(2) gasoline is added into said mixture and is stirred, is stood after miscible；

(3) low-carbon alcohols are added into said mixture, stirring is miscible, stands and produces.

Step (2) stands 1 hour；At least 24 hours are stood in step (3).

The beneficial effects of the invention are as follows：The alcohol-oil fuel of the present invention, prepare simply, the addition of nitromethane improves fuel Burning velocity, reduce the discharge of NOx in tail gas, exhaust emissions is far superior to state V, and the addition of cosolvent solves alcohol content and existed 20-40% problem of phase separation, still there is preferable stability under cryogenic, also improve the energy of alcohol oil, higher than existing The low heating value of some alcohol-oil fuels, the energy of the alcohol-oil fuel is suitable with gasoline, and its another very important effect is exactly The firing property of nitromethane is reduced, in the amount ranges of the present invention, explosion danger will not occur.It is single if being added without cosolvent Detonation can occur for the pure combination for adding nitromethane and other cosolvents.

Embodiment

By the description of embodiment, the embodiment of invention is described in further detail, it is therefore an objective to help this The technical staff in field has more complete, accurate and deep understanding, and contributed in fact to design of the invention, technical scheme Apply.

Embodiment 1

A kind of alcohol-oil fuel, including the raw material of following volume fraction are made：

Methanol 40%；

93# gasoline 58%；

Nitromethane 1.5%；

Cosolvent 0.5%；

The cosolvent is prepared from the following raw materials in parts by weight：

90 parts of gasoline engine SF levels machine oil, 0.5 part of BHT, 0.5 part of lanthanum；Its preparation method is：By all raw material in nothing 85 DEG C are heated under the conditions of oxygen, is incubated 24 hours, is cooled to the liquid grain of room temperature, concentration, separation, removing more than 5 microns thereafter Son produces the cosolvent of the present invention；

The alcohol-oil fuel, is made using following methods：

(1) cosolvent and nitromethane are reconciled in proportion and stirs 15min；

(2) gasoline is added into said mixture and stirs 40min, 1.5h is stood after miscible；

(3) low-carbon alcohols are added into said mixture, stirring 40min is miscible, stands 24h and produces.

Embodiment 2

A kind of alcohol-oil fuel, including the raw material of following volume fraction are made：

Ethanol 20%；

97# gasoline 78.9%；

Nitromethane 0.8%

Cosolvent 0.3%；

The cosolvent is prepared from the following raw materials in parts by weight：

100 parts of diesel engine CD levels machine oil, 2 parts of diphenylamines antioxidant (DPA), 0.5 part of praseodymium；Its preparation method is：Will be all Raw material be heated under anaerobic 200 DEG C, insulation 48 hours；Thereafter room temperature, concentration, separation, removing are cooled to more than 5 The liquid particle of micron produces the cosolvent of the present invention.

The alcohol-oil fuel, is made using following methods：

(1) cosolvent and nitromethane are reconciled in proportion and stirs 10min；

(2) gasoline is added into said mixture and stirs 30min, 1h is stood after miscible；

(3) low-carbon alcohols are added into said mixture, stirring 30min is miscible, stands 24h and produces.

Embodiment 3

A kind of alcohol-oil fuel, including the raw material of following volume fraction are made：

Ethanol 40%；

93# gasoline 57%；

Nitromethane 2%；

Cosolvent 1%；

The cosolvent is prepared from the following raw materials in parts by weight：

98 parts of gasoline engine SF levels machine oil, 3,7 12 parts of diisooctyl phenthazine (DOPTZ), 0.5 part of erbium；Its preparation method For：All raw material are heated to 150 DEG C under anaerobic, are incubated 35 hours；Thereafter be cooled to room temperature, concentration, separation, Remove the fuel assistants that the liquid particle more than 5 microns produces the present invention.

The alcohol-oil fuel, is made using following methods：

(1) cosolvent and nitromethane are reconciled in proportion and stirs 20min；

(2) gasoline is added into said mixture and stirs 40min, 1.5h is stood after miscible；

(3) low-carbon alcohols are added into said mixture, stirring 40min is miscible, stands 24h and produces.

Comparative example 1

Preparation method does not only add nitromethane with embodiment 2.

Embodiment 4

Meet water resisting phase separation performance

Materials each 200mL, is respectively placed in 2 250mL tool plug graduated cylinders, is separately added into 1mL distilled water vibration about 2min, Observed after 15 days are disposed vertically under normal temperature, alcohol-oil fuel produced by the present invention does not occur muddiness, has and preferably meets water anti-phase point From performance.

Embodiment 5

Low temperature separating resistance energy

Materials in each 200mL tool plug graduated cylinder, container is disposed vertically in being adjusted in -35 DEG C of cryogenic box, Mei Geban Hour takes out observation, and it is " excellent " that muddy person does not occur yet for most long testing time 24h.As a result referring to table 1.

The fuel performance of table 1 contrasts

As it can be seen from table 1 the alcohol-oil fuel exhaust emissions of the present invention is far superior to state V, when addition nitro first in alcohol oil During alkane, the burn rate of fuel can be improved, reduce the discharge of NOx in tail gas, although from low heating value as can be seen that methanol or The low heating value of ethanol is well below gasoline, but after adding cosolvent and nitromethane, energy and the gasoline phase of alcohol-oil fuel When realization improves the purpose of energy, and the low temperature resisting phase separation excellent performance of the alcohol-oil fuel of the present invention, under the conditions of -35 DEG C Place more than 24h and be respectively provided with preferable performance.

Claims (6)

1. a kind of alcohol-oil fuel, it is characterised in that the raw material including following volume fraction is made：

Low-carbon alcohols 20-40%；

Gasoline 60-80%；

Nitromethane 0.8-2%；

Cosolvent 0.3-1%；

The cosolvent is prepared from the following raw materials in parts by weight：Lubricating oil 90-00 parts, antioxidant 0.5-2 parts, lanthanide rare Metal 0.5-2 parts, the lubricating oil are IC engine lubricating oil oily based on mineral oil, preferably gasoline engine SF levels machine oil, bavin Oil machine CD level machine oil；The antioxidant is BHT, Diphenylamine Antioxidant or 3,7- diisooctyl phenthazine；The group of the lanthanides is dilute Earth metal is lanthanum, praseodymium or erbium.

2. alcohol-oil fuel as claimed in claim 1, it is characterised in that the preparation method of the cosolvent is as follows：By all originals Material is heated to 85-200 DEG C, insulation 24-48h under anaerobic, is cooled to room temperature, concentration, separation, removes more than 5 microns Liquid particle produces the cosolvent.

3. alcohol-oil fuel as claimed in claim 1, it is characterised in that the low-carbon alcohols are methanol or ethanol.

4. the preparation method of the alcohol-oil fuel described in claim 1, it is characterised in that comprise the following steps：

(1) cosolvent is reconciled and stirred in proportion with nitromethane；

(2) gasoline is added into said mixture and is stirred, is stood after miscible；

(3) low-carbon alcohols are added into said mixture, stirring is miscible, stands and produces.

5. preparation method as claimed in claim 5, mixing time is 10-5min, time of repose 1h in step (2).

6. preparation method as claimed in claim 5, mixing time is 30-40min in step (3), stands at least 24 hours.