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Method for Improving Oxidation Stability of Biofuel Oil

A fuel oil, anti-oxidation technology, applied in the field of fuel oil, can solve the problems of HC, smoke, particle number increase, small solubility, difficult filtration, etc., to prolong the oxidation induction period and improve the effect of surface function

Active Publication Date: 2022-04-29
盘锦蓝海石化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, biofuel oil is easily affected by factors such as light, oxygen, temperature, moisture, and trace metal ions during storage and transportation, and will inevitably be oxidized
With the prolongation of oxidation time, the viscosity and density of biofuel oil increase, and the oxidized biofuel oil increases the emission of HC, smoke, and particle number, and reduces nitrogen oxides, resulting in a decrease in combustion efficiency and effective fuel consumption. rate increase
Secondary oxidation products cause odor, stratification of biofuel oil, etc., which will cause engine corrosion during use, and polymerize in the oil circuit to form macromolecular colloidal substances, causing gelation in the fuel system and difficulty in filtering. A series of problems such as fuel injector clogging and power instability
Conventional antioxidants have good antioxidant effect, but their solubility in biofuel oil is small, which affects their antioxidant effect in biofuel oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 3wt% propyl gallate to the polytetrafluoroethylene coating solution (solid content: 40%) at room temperature, stir for 2 hours to mix evenly, and then perform ultrasonic defoaming treatment for later use. Degrease and roughen the inner wall of the biofuel oil stainless steel container, spray the above-mentioned anti-oxidation polytetrafluoroethylene coating solution on the inner wall surface by air spraying, send it to an oven at 80°C, and dry it at 230-250°C after the water is dried. Under heating for 1h. The resulting container was used for biofuel oil storage made from soybean oil.

[0026] The induction period of the stored biofuel oil in this example was extended to 30.17h.

Embodiment 2

[0028] Add 1.5wt% propyl gallate and 1.5wt% butylated hydroxyanisole to the polytetrafluoroethylene coating solution (solid content: 40%) at room temperature, continue to stir for 2 hours to mix evenly, and then ultrasonicate for defoaming treatment for later use. Degrease and roughen the inner wall of the biofuel oil stainless steel container, spray the above-mentioned anti-oxidation polytetrafluoroethylene coating solution on the inner wall surface by air spraying, send it to an oven at 80°C, and dry it at 230-250°C after the water is dried. Under heating for 1h. The resulting container was used for biofuel oil storage made from soybean oil.

[0029] The induction period of the stored biofuel oil in this example was extended to 33.87h.

Embodiment 3

[0031] Put polyvinyl alcohol in distilled water, stir and swell at 50°C for 3.5h, then raise the temperature to 85°C and stir until the PVA is completely dissolved to obtain a 4wt% polyvinyl alcohol solution; cool down to 50°C, and then pour into the polyvinyl alcohol solution Slowly add 3wt% tea polyphenols, mix evenly by ultrasonication for 1h, and let it stand for defoaming for later use. Wipe the inner wall of the biofuel oil plastic container clean, spray the anti-oxidation polyvinyl alcohol coating solution on the inner wall surface by electrostatic spraying, and dry it in an oven at 80°C. The resulting containers are used for storage of biofuel oils made from palm oil.

[0032] The induction period of the stored biofuel oil in this example was extended to 51.32 hours.

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PUM

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Abstract

The invention discloses a method for improving the antioxidative stability of biofuel oil, belonging to the technical field of fuel oil. The method comprises the following steps: adding an antioxidant to a polymer coating, and then coating the antioxidant coating on the biofuel oil for storage The inner wall of the container, dry and directly used to store biofuel oil. In the invention, the antioxidant is added to the polymer coating, the polymer coating is used to make it evenly coated on the inner surface of the storage container, and one or more layers of films are formed on the inner surface of the storage container through adhesion, which can not only improve the storage container Some surface functions of biofuel oil and endow it with antioxidant function, effectively prolonging the oxidation induction period of biofuel oil.

Description

technical field [0001] The invention belongs to the technical field of fuel oil, and in particular relates to a method for improving the oxidation resistance stability of biofuel oil. Background technique [0002] Biofuel oil is a typical "green energy". Compared with fossil energy, biofuel oil has an important role and development potential in promoting sustainable economic development, promoting energy substitution, reducing environmental pressure, and controlling urban air pollution. However, biofuel oil is easily affected by factors such as light, oxygen, temperature, moisture, and trace metal ions during storage and transportation, and will inevitably be oxidized. With the prolongation of oxidation time, the viscosity and density of biofuel oil increase, and the oxidized biofuel oil increases the emission of HC, smoke, and particle number, and reduces nitrogen oxides, resulting in a decrease in combustion efficiency and effective fuel consumption. rate increases. Seco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/18C09D129/04C09D167/04C09D105/08C09D7/63
CPCC09D127/18C09D129/04C09D167/04C09D105/08C09D7/63C08K5/1345C08K5/13C08K5/1545C08K5/3462
Inventor 盖景刚邹倩盖洪波杨光闫葳
Owner 盘锦蓝海石化有限公司