CN103184084A - Method for preventing biodiesel from corroding copper sheets - Google Patents
Method for preventing biodiesel from corroding copper sheets Download PDFInfo
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- CN103184084A CN103184084A CN2013101121899A CN201310112189A CN103184084A CN 103184084 A CN103184084 A CN 103184084A CN 2013101121899 A CN2013101121899 A CN 2013101121899A CN 201310112189 A CN201310112189 A CN 201310112189A CN 103184084 A CN103184084 A CN 103184084A
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- biofuel
- biodiesel
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- phenolic compound
- hydrogen
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Abstract
The invention discloses a method for preventing biodiesel from corroding copper sheets. The method is simple, feasible, efficient, safe and environment-friendly. Corrosion of biodiesel to metal can be avoided by adding a proper amount of phenolic, amine and metallic rust inhibitors, so that the shortcoming of copper corrosion caused by poor stability of biodiesel is overcome, and accordingly, the biodiesel meets the demand on biodiesel 'BD100 for diesel-fuel blending' of national standard GB/T20828-2007. The method provided by the invention provides excellent preventive measures and solutions for transport and storage of biodiesel, as well as corrosion to metal in contact with the biodiesel, probably caused during the use of an engine.
Description
Technical field
The present invention relates to a kind of biofuel that solves to the method for metallic corrosion, in a certain amount of biofuel, add an amount of phenols, amine and metal antirusting agent thereof etc. specifically, thereby overcome biofuel to the shortcoming of metallic corrosion.
Background technology
Along with the development and utilization of petroleum resources, the global energy total amount is day by day reducing, and energy dilemma highlights, and various countries drop in the middle of the research of new forms of energy one after another.The seventies in 20th century, biofuel is as a kind of cleaning, safety, and renewable, biodegradable New-type fuel is paid close attention to widely.Be methyl esters or the ethyl ester fuel (being fatty acid methyl ester or ethyl ester) that raw material is made, and become one of substitute of petrifaction diesel gradually with waterplant grease such as oil crops, wild oilseed plant and engineering microalgae and animal grease, useless food and drink wet goods.
China is starting late aspect the biofuel research, but tempo is very fast.Though comparing with petrifaction diesel, biofuel has relatively low condensation point and sulphur content, and CO
2Quantity discharged reduce, the quantity discharged of CO and particulate matter thereof also is tangible minimizing, substantially not sulfur compound (" environmental science ", 2009,30(10): 2840-2844).But be to use raw material and preparation technology's difference, its performance of the biofuel that obtains also has certain difference.The research of existing a lot of this respects both at home and abroad, still less to unstable and corrosion research thereof that biofuel presents.It is rotten that biofuel is taken place by the influence of external environment easily in storage, transportation and use thereof, causes and the metal parts generation corrosion phenomenon that contacts.
At present, domestic unstable to biofuel has had certain research basis, by in biofuel, add compound antioxygen suppress biofuel deterioration by oxidation (see patent publication No.: CN101319155), yet less to the corrosive research report of biofuel.Research both at home and abroad is also just at the early-stage, is confined to that just biofuel is had corrodibility and has done preliminary research.Savita Kaul as India, people such as R.C have studied biofuel to the diesel engine part corrosion behavior, the biofuel of different inedible oil preparations has in various degree corrosion behavior (Fuel Processing Technology to the composition metal of diesel engine part and liner, 2007,88 (3): 303-307).Domestic Chen Lin, people such as Chen Kai by metal soak test preliminary study under the normal temperature bio-ethanol and biofuel to 7 kinds of common Corrosion of Metallic Materials, etch pit appears in aluminium alloy in bio-ethanol, spot corrosion (" corrosion and protection " 2009,30 (3): 165-171) appears in carbon steel and cast steel in biofuel.Zhou Ying, Zhang Zhi forever, Zhao Hui etc. have studied biofuel to diesel fuel system rubber, metal and plastic component Effect on Performance (" automobile engineering " 2008,30 (10): 875-879).People such as Chen Fei are raw material with the rapeseed oil biofuel, adopt the research of promote the oxidation method under 90 ℃ of conditions different proportionings 0
#Diesel oil and biofuel are mixed oil sample to corrodibility (" oil chemistry " 2010,35 (11): 48-51) of copper sheet.Yet, the solution of the metal protection of biofuel is not appeared in the newspapers, the main content of biofuel is fatty acid ester, decomposed by the influence of external environment, and side reaction etc. takes place, and generates to have corrosive material.To diesel engine metal and the existing destruction of rubber and plastic parts thereof, shortened diesel engine work-ing life again.As seen, the corrodibility of solution biofuel is very important work.
Summary of the invention
The present invention is intended to overcome and solves fuel biofuel autoxidation and diesel oil is formed the corrosion of system in storage, transportation and use.Existing solution oxidation stability of biodiesel report is more, but it is very few to solve biofuel copper corrosion report.The object of the invention is to provide a kind of method that solves biofuel corrosion copper sheet, and that this method has is simple, safety and environmental protection, low cost and other advantages, makes the fuel biofuel satisfy the standard of national fuel copper corrosion.
The technical solution used in the present invention is as follows:
A kind of method that solves biofuel corrosion copper sheet is characterized in that, adds an amount of phenolic compound, aminated compounds and metal antirusting agent thereof in the biofuel, and its phenolic compound, aminated compounds, metal antirusting agent addition are respectively:
Phenolic compound: 0.01-0.2%,
Aminated compounds: 0.01-0.2%,
Metal antirusting agent: 0.001-0.01%;
Described phenolic compound is selected from the compound that contains following structural formula:
Wherein, A
1, A
2=hydrogen, alkyl, alkynyloxy group, alkoxyl group, alkaryl, aralkyl, cyclophane alkyl, hydroxyl, aryl;
R
1=hydrogen, hydroxyl, alkoxyl group, ester group;
Preferred phenolic compound: 2,6-di-t-butyl is to phenyl methylcarbamate (BHT) or Tenox PG (PG).
Described aminated compounds is selected from the compound that contains following structural formula:
Wherein, B
1,, B
2=hydrogen, alkyl, alkynyloxy group, alkoxyl group, alkaryl, aralkyl, cyclophane alkyl, hydroxyl, aryl;
R
2=hydrogen, alkoxyl group, ester group;
Preferred amines compounds: N-phenyl-2-naphthylamines or N, N-diphenyl ethylene diamine.
Described metal antirusting agent is selected from the compound that contains following structural formula:
Wherein, C
1=hydrogen, alkyl, alkynyloxy group, alkoxyl group, alkaryl, aralkyl, cyclophane alkyl, hydroxyl, aryl;
R
3=hydrogen, alkoxyl group, ester group;
Metal antirusting agent is preferred: benzotriazole and derivative thereof, alkaline dinonyl naphthalene sulfonate barium, hexadecylene base Succinic Acid, octadecylene base Succinic Acid or nonylphenoxyacetic acid.
Described phenolic compound, aminated compounds and metal antirusting agent mass ratio are 5-35:5-35:1.
This method is as long as dissolve phenolic compound, aminated compounds and metal antirusting agent fully, and assurance biofuel kinematic viscosity satisfies 1.0-6.0 mm after adding
2/ s(USS ASTM6751), acid number control is at 0.8 mgKOHg
-1Below, can be dispersed in and get final product in the middle of the biofuel.
It is rotten that biofuel is taken place by the influence of environment in the process of transporting, storing and use, and to the metal that contacts corrosion phenomenon can take place.Particularly Bian Zhi biofuel in use, to producing very big influence in work-ing life of diesel engine.The present invention is on the basis of biofuel metallic corrosion and oxidation stability research thereof, work out a kind of method that solves biofuel corrosion copper sheet, the oxidisability that not only can suppress biofuel, simultaneously to after the biofuel oxidation corrodibility of copper sheet also tool being had greatly improved, thereby provide safety control for transportation, storage and the use thereof of biofuel.
Embodiment
Embodiment 1
The biofuel of adding 10-20 g is heated 50 ℃ in small beaker, adds massfraction successively and is: 0.01-0.02% BHT, and 0.05-0.06% N-phenyl-2-naphthylamines, the 0.001-0.002% benzotriazole fully dissolves it, mixing.Measure kinematic viscosity, acid number respectively according to standard GB/T265, GB/T 264, kinematic viscosity is at 1.0-4.0 mm
2/ s, acid number is at 0.035-0.064 mgKOHg
-1
Embodiment 2
The biofuel of adding 10-20g is heated 50 ℃ in small beaker, adds massfraction successively and is: 0.02-0.03%BHT, and 0.04-0.05%N-phenyl-2-naphthylamines, the 0.001-0.002% benzotriazole fully dissolves it, mixing.Measure kinematic viscosity, acid number respectively according to standard GB/T265, GB/T 264, kinematic viscosity is at 1.0-5.0 mm
2/ s, acid number is at 0.030-0.071 mgKOHg
-1
Embodiment 3
The biofuel of adding 10-20g is heated 50 ℃ in small beaker, adds massfraction successively and is: 0.02-0.03% BHT, and 0.04-0.05% N, the N-diphenyl ethylene diamine, the 0.001-0.002% benzotriazole fully dissolves it, mixing.Measure kinematic viscosity, acid number respectively according to standard GB/T265, GB/T 264, kinematic viscosity is at 1.0-4.5 mm
2/ s, acid number is at 0.035-0.060 mgKOHg
-1
Embodiment 4
The biofuel of adding 10-20g is heated 50 ℃ in small beaker, adds massfraction successively and is: 0.02-0.03% PG, and 0.02-0.03% N, the N-diphenyl ethylene diamine, the 0.001-0.002% benzotriazole fully dissolves it, mixing.Measure kinematic viscosity, acid number respectively according to standard GB/T265, GB/T 264, kinematic viscosity is at 1.0-4.0 mm
2/ s, acid number is at 0.040-0.060 mgKOHg
-1
Embodiment 5
The biofuel of adding 10-20g is heated 50 ℃ in small beaker, adds massfraction successively and is: 0.03-0.04% PG, and 0.03-0.05% N-phenyl-2-naphthylamines, the 0.001-0.002% benzotriazole fully dissolves it, mixing.Measure kinematic viscosity, acid number respectively according to standard GB/T 265, GB/T 264, kinematic viscosity is at 1.5-4.0 mm
2/ s, acid number is at 0.035-0.065 mgKOHg
-1
Embodiment 6
The biofuel of adding 10-20g is heated 50 ℃ in small beaker, adds massfraction successively and is: 0.04-0.05% BHT, and 0.05-0.06% N, the N-diphenyl ethylene diamine, the 0.001-0.002% benzotriazole fully dissolves it, mixing.Measure kinematic viscosity, acid number respectively according to standard GB/T265, GB/T 264, kinematic viscosity is at 1.5-4.4 mm
2/ s, acid number is at 0.035-0.065 mgKOHg
-1
With reference to the method according to standard GB/T5096 " petroleum products copper strip test method ", adopt the copper strip test method, copper sheet is placed in the biofuel of having added additive, soaked 2 months, embodiment 1-7 detects copper corrosion, the results are shown in following table.
Annotate: RME: rapeseed methylester; COSME: Oleum Gossypii semen methyl esters: WCOME: waste cooking oil methyl esters; A-F: embodiment 1-6; G: blank test
By example laboratory as can be seen the present invention good effect is played in the copper corrosion that suppresses rapeseed oil, Oleum Gossypii semen and waste cooking oil biofuel.Illustrate that this method all has the effect of good anti-copper corrosion to the biofuel of different material preparation.
Claims (6)
1. a method that solves biofuel corrosion copper sheet is characterized in that, adds an amount of phenolic compound, aminated compounds and metal antirusting agent thereof in the biofuel, and its phenolic compound, aminated compounds, metal antirusting agent addition are respectively:
Phenolic compound: 0.01-0.2%,
Aminated compounds: 0.01-0.2%,
Metal antirusting agent: 0.001-0.01%.
2. a kind of method that solves biofuel corrosion copper sheet according to claim 1 is characterized in that described phenolic compound is selected from the compound that contains following structural formula:
Wherein, A
1, A
2=hydrogen, alkyl, alkynyloxy group, alkoxyl group, alkaryl, aralkyl, cyclophane alkyl, hydroxyl, aryl;
R
1=hydrogen, hydroxyl, alkoxyl group, ester group;
Preferred phenolic compound: 2,6-di-t-butyl is to phenyl methylcarbamate (BHT) or Tenox PG (PG).
3. a kind of method that solves biofuel corrosion copper sheet according to claim 1 is characterized in that described aminated compounds is selected from the compound that contains following structural formula:
Wherein, B
1,, B
2=hydrogen, alkyl, alkynyloxy group, alkoxyl group, alkaryl, aralkyl, cyclophane alkyl, hydroxyl, aryl;
R
2=hydrogen, alkoxyl group, ester group;
Preferred amines compounds: N-phenyl-2-naphthylamines or N, N-diphenyl ethylene diamine.
4. a kind of method that solves biofuel corrosion copper sheet according to claim 1 is characterized in that described metal antirusting agent is selected from the compound that contains following structural formula:
Wherein, C
1=hydrogen, alkyl, alkynyloxy group, alkoxyl group, alkaryl, aralkyl, cyclophane alkyl, hydroxyl, aryl;
R
3=hydrogen, alkoxyl group, ester group;
Metal antirusting agent is preferred: benzotriazole and derivative thereof, alkaline dinonyl naphthalene sulfonate barium, hexadecylene base Succinic Acid, octadecylene base Succinic Acid or nonylphenoxyacetic acid.
5. a kind of method that solves biofuel corrosion copper sheet according to claim 1 is characterized in that described phenolic compound, aminated compounds and metal antirusting agent mass ratio are 5-35:5-35:1.
6. a kind of method that solves biofuel corrosion copper sheet according to claim 1 is characterized in that after described phenolic compound, aminated compounds and metal antirusting agent added, the kinematic viscosity of biofuel remained on 1.0-6.0 mm in the time of 40 ℃
2s
-1Acid number control is at 0.8 mgKOHg
-1Below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101121899A CN103184084A (en) | 2013-04-02 | 2013-04-02 | Method for preventing biodiesel from corroding copper sheets |
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|---|---|---|---|
| CN2013101121899A CN103184084A (en) | 2013-04-02 | 2013-04-02 | Method for preventing biodiesel from corroding copper sheets |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090111721A1 (en) * | 2007-10-31 | 2009-04-30 | Boffa Alexander B | Lubricating oil compositions comprising a biodiesel fuel and a detergent |
| CN102469780A (en) * | 2009-07-13 | 2012-05-23 | 乔治洛德方法研究和开发液化空气有限公司 | Additive mixture for the bactericidal and anticorrosive additization of fuels |
-
2013
- 2013-04-02 CN CN2013101121899A patent/CN103184084A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090111721A1 (en) * | 2007-10-31 | 2009-04-30 | Boffa Alexander B | Lubricating oil compositions comprising a biodiesel fuel and a detergent |
| CN102469780A (en) * | 2009-07-13 | 2012-05-23 | 乔治洛德方法研究和开发液化空气有限公司 | Additive mixture for the bactericidal and anticorrosive additization of fuels |
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