News Details
Power - oil antioxidants
2018-1-8 15:50:48
Power - oil antioxidants
Can play in oil oxidation material is more, but not all these substances can do antioxidants used, electricity oil antioxidants must have the following features: anti-oxidation ability, good oil solubility and volatile small; No chemical reaction with the components in oil, the good performance and the performance of the oil products in the long term are not damaged. Not corrode the relevant materials in metal and equipment, and do not decompose, not evaporate, or absorb moisture in the temperature of the oil equipment; Feel good, can apply to all kinds of oil.
There are many kinds of oil resistance and oxidation. The antioxidant of power oil in China is usually 2, 6-2 tert-butyl (T501).
It is found that the low antioxidant content of power oil has a strong correlation with the rapid deterioration of oil. Data also show that the antioxidant T501 and oil generated in the process of oxidation of their own active free radicals and peroxide reaction, and to form stable compounds, thereby eliminating the oil generated in the oxidation process of free radicals and prevent oil itself.
Suitable T501 content can effectively slow the aging of oil, and the reasonable addition of T501 should be 0.3% ~ 0.5%. Oil with antioxidant T501 added in artificial ageing process CPC qualitative change and the content of T501, reduce has the certain regularity, T501 were decreased when the addition of 30% less than the original, oily changed obviously; When the content of T501 was reduced to 30% ~ 50% of the original amount, the oil began to change. When the content of T501 was reduced to 50% of the original amount, the oil changed rapidly and the acid value increased sharply. 2. The main reason for the rapid deterioration of pump oil quality is the main reason for the rapid deterioration of pump oil in the main fuel tank and no.5 machine no.2 of no.2 and no.2, which makes the content too low.
In the case of turbine oil, because the turbine oil is recycled during operation, it absorbs oxygen in the air and reacts with oxygen to form an aging product. If it is mildly oxidized, the resulting product is soluble in oil, which has no obvious effect on the physical and chemical properties of the oil. If oil oxidation more serious, it will produce a large number of product of acid insoluble sludge, and the acid product will the relevant components of equipment corrosion, sludge deposit in the bearing channel, cold, filter oil machine, inside the coupling of the main tank, formation of thermal barrier to reduce the heat transfer performance of the equipment. Excessive peroxide will also increase the viscosity of oil products and influence the lubrication effect of the equipment.
In order to improve the oxidation resistance of steam turbine oil. Ensure the long-term use of oil under harsh conditions. The usual practice is to add antioxidant T501 in deep, refined base oils. However, with the increase of the running time of the turbine oil, the antioxidants will be gradually consumed and should be added in time. To ensure the antioxidant capacity of oil products, the added amount is usually 0.3%- 0.5%.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Cas no. : 101-02-0
HS: 29209019.00
The most important index of products: colorless, yellow liquid
Density (rho) 2525:1.183-1.192, refractive index (eta 020) : 1.585 1.590, freezing point ° C: 19-24, chloride (Cl - %) : 0.20 or less
Tax refund: the current tax refund of Triphenyl phosphite is 9 percent
Raw materials: phenol, phosphorus trichloride, phosphorus trichloride.
For transformer oil, transformer oil in use process, because of the existence of dissolved oxygen, coupled with the use environment, temperature, under the action of copper, iron, metal catalyst, the oxidation and degradation is inevitable. Acid value or neutralization value, oil sludge and dielectric loss factor are all indicators that characterize the fast oxidation performance of oil products.
The oxidation reaction of petroleum hydrocarbon is based on the free radical chain reaction mechanism of the hydrocarbon-free radical. The oxidation process of oil is changed at the speed of the reaction speed. Generally can be divided into 3 stages, namely induction period, reaction time and delay period.
The oxidation process is a chain reaction. If you do not stop it, the reaction will be faster and faster. Peroxy radical or other free radicals and hydrocarbon molecules in oil products further reaction. The oxidation products of alcohol, ketone and carboxylic acid are produced. Under certain conditions, these oxidation products will react further. The formation of thickened polymer, resin, sludge, carbon, etc., makes the oil quickly deteriorate.
The delay period is the process of organizing this chain reaction, which can be achieved by adding antioxidants to oil products. Antioxidant that is commonly used in transformer oil can be divided into two categories: the first is damage free radicals, namely, free radicals, the formation of the reaction period by antioxidant release a H atom, is beneficial to free radicals, thus forming a stable compounds, phenol and amine as such, the second type is formed with peroxide reaction, there is existing in natural antioxidants, such as sulfur, nitrogen compounds, etc.) belongs to and so on.
Most experiments can prove that the first type of antioxidant additives are more effective in the addition of unoxidized or slightly oxidized oils, and the effect on the oil that has been oxidized is poor. Refined white oil, because it does not stop the oxidation process, so the oil is rapidly deteriorating, the acid rapidly rising, and after a certain period of deterioration of the oil. The oxidation products of yellow precipitates can be seen. Moderate refined, containing a certain amount of oil, natural antioxidant oil after short time rapid oxidation, natural antioxidant to prevent to produce free radicals, so that the reaction speed slow down rapidly, the oxidation products are phenol and sulfur, nitrogen compounds, formed by black residue.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Can play in oil oxidation material is more, but not all these substances can do antioxidants used, electricity oil antioxidants must have the following features: anti-oxidation ability, good oil solubility and volatile small; No chemical reaction with the components in oil, the good performance and the performance of the oil products in the long term are not damaged. Not corrode the relevant materials in metal and equipment, and do not decompose, not evaporate, or absorb moisture in the temperature of the oil equipment; Feel good, can apply to all kinds of oil.
There are many kinds of oil resistance and oxidation. The antioxidant of power oil in China is usually 2, 6-2 tert-butyl (T501).
It is found that the low antioxidant content of power oil has a strong correlation with the rapid deterioration of oil. Data also show that the antioxidant T501 and oil generated in the process of oxidation of their own active free radicals and peroxide reaction, and to form stable compounds, thereby eliminating the oil generated in the oxidation process of free radicals and prevent oil itself.
Suitable T501 content can effectively slow the aging of oil, and the reasonable addition of T501 should be 0.3% ~ 0.5%. Oil with antioxidant T501 added in artificial ageing process CPC qualitative change and the content of T501, reduce has the certain regularity, T501 were decreased when the addition of 30% less than the original, oily changed obviously; When the content of T501 was reduced to 30% ~ 50% of the original amount, the oil began to change. When the content of T501 was reduced to 50% of the original amount, the oil changed rapidly and the acid value increased sharply. 2. The main reason for the rapid deterioration of pump oil quality is the main reason for the rapid deterioration of pump oil in the main fuel tank and no.5 machine no.2 of no.2 and no.2, which makes the content too low.
In the case of turbine oil, because the turbine oil is recycled during operation, it absorbs oxygen in the air and reacts with oxygen to form an aging product. If it is mildly oxidized, the resulting product is soluble in oil, which has no obvious effect on the physical and chemical properties of the oil. If oil oxidation more serious, it will produce a large number of product of acid insoluble sludge, and the acid product will the relevant components of equipment corrosion, sludge deposit in the bearing channel, cold, filter oil machine, inside the coupling of the main tank, formation of thermal barrier to reduce the heat transfer performance of the equipment. Excessive peroxide will also increase the viscosity of oil products and influence the lubrication effect of the equipment.
In order to improve the oxidation resistance of steam turbine oil. Ensure the long-term use of oil under harsh conditions. The usual practice is to add antioxidant T501 in deep, refined base oils. However, with the increase of the running time of the turbine oil, the antioxidants will be gradually consumed and should be added in time. To ensure the antioxidant capacity of oil products, the added amount is usually 0.3%- 0.5%.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Cas no. : 101-02-0
HS: 29209019.00
The most important index of products: colorless, yellow liquid
Density (rho) 2525:1.183-1.192, refractive index (eta 020) : 1.585 1.590, freezing point ° C: 19-24, chloride (Cl - %) : 0.20 or less
Tax refund: the current tax refund of Triphenyl phosphite is 9 percent
Raw materials: phenol, phosphorus trichloride, phosphorus trichloride.
For transformer oil, transformer oil in use process, because of the existence of dissolved oxygen, coupled with the use environment, temperature, under the action of copper, iron, metal catalyst, the oxidation and degradation is inevitable. Acid value or neutralization value, oil sludge and dielectric loss factor are all indicators that characterize the fast oxidation performance of oil products.
The oxidation reaction of petroleum hydrocarbon is based on the free radical chain reaction mechanism of the hydrocarbon-free radical. The oxidation process of oil is changed at the speed of the reaction speed. Generally can be divided into 3 stages, namely induction period, reaction time and delay period.
The oxidation process is a chain reaction. If you do not stop it, the reaction will be faster and faster. Peroxy radical or other free radicals and hydrocarbon molecules in oil products further reaction. The oxidation products of alcohol, ketone and carboxylic acid are produced. Under certain conditions, these oxidation products will react further. The formation of thickened polymer, resin, sludge, carbon, etc., makes the oil quickly deteriorate.
The delay period is the process of organizing this chain reaction, which can be achieved by adding antioxidants to oil products. Antioxidant that is commonly used in transformer oil can be divided into two categories: the first is damage free radicals, namely, free radicals, the formation of the reaction period by antioxidant release a H atom, is beneficial to free radicals, thus forming a stable compounds, phenol and amine as such, the second type is formed with peroxide reaction, there is existing in natural antioxidants, such as sulfur, nitrogen compounds, etc.) belongs to and so on.
Most experiments can prove that the first type of antioxidant additives are more effective in the addition of unoxidized or slightly oxidized oils, and the effect on the oil that has been oxidized is poor. Refined white oil, because it does not stop the oxidation process, so the oil is rapidly deteriorating, the acid rapidly rising, and after a certain period of deterioration of the oil. The oxidation products of yellow precipitates can be seen. Moderate refined, containing a certain amount of oil, natural antioxidant oil after short time rapid oxidation, natural antioxidant to prevent to produce free radicals, so that the reaction speed slow down rapidly, the oxidation products are phenol and sulfur, nitrogen compounds, formed by black residue.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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