High-efficiency zinc alloy sacrificial anode for high-temperature crude oil deposition water environment

A sacrificial anode, water environment technology, applied in the field of high-efficiency zinc alloy sacrificial anode, can solve problems such as failure, and achieve the effects of large driving voltage, high efficiency and easy operation

Inactive Publication Date: 2019-08-09
SUNRUI MARINE ENVIRONMENT ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-efficiency zinc alloy sacrificial anode for high-temperature crude oil deposition water environment to solve the problem of failure of high-temperature zinc alloy anodes in the prior art in crude oil deposition water whose temperature can reach 80°C

Method used

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Examples

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Embodiment 1

[0017] Embodiment 1: the formula of a kind of zinc alloy sacrificial anode that the present invention relates to is (weight percent) A1: 0.10%; Mg: 0.05%; Sn: 0.005%; Impurity content: Pb≤0.006%; Cd≤0.001%; ​​Cu ≤0.001%; ​​Fe≤0.002%; the balance is Zn; according to the GB / T 17848-1999 standard measurement method, its electrochemical performance is shown in Table 1.

[0018] Table 1 Electrochemical performance of high temperature zinc alloy sacrificial anode (in sea oil sewage)

[0019]

Embodiment 2

[0020] Embodiment 2: The formulation of another zinc alloy sacrificial anode involved in the present invention is (weight percent) A1: 0.25%; Mg: 0.15%; Sn: 0.009%; impurity content: Pb≤0.006%; Cd≤0.001%; Cu≤0.001%; ​​Fe≤0.002%; the balance is Zn; according to GB / T 17848-1999 standard measurement method, its electrochemical performance is shown in Table 2.

[0021] Table 2 Electrochemical performance of high temperature zinc alloy sacrificial anode (in sea oil sewage)

[0022]

[0023] In addition, the composition content of the zinc alloy sacrificial anode involved in the present invention is between the above-mentioned examples 1 and 2. Using the same process and measurement method as the above-mentioned examples, its electrochemical performance is between Table 1 Between and Table 2 (not repeated).

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Abstract

The invention provides a high-efficiency zinc alloy sacrificial anode suitable for a high-temperature crude oil deposition water environment. The high-efficiency zinc alloy sacrificial anode is prepared from the compositions in percentage by weight: 0.10-0.25% of Al, 0.05-0.15% of Mg, 0.005-0.009% of Sn, the impurity content including less than or equal to 0.006% of Pb, less than or equal to 0.001% of Cd, less than or equal to 0.001% of Cu, less than or equal to 0.002% of Fe, and the balance of Zn. The high-efficiency zinc alloy sacrificial anode is processed and manufactured through conventional fusion casting, zinc ingots are held through a dedicated graphite crucible, and melted in a heating furnace, Al and an Al-Mg alloy are added into a molten zinc solution in proportion, the productis stirred through a graphite rod, slag is removed, and the product is casted after being removed from the furnace; and the heating furnace selects a coke-fired furnace, an electric furnace, an oil furnace, a gas furnace and the like. According to the high-efficiency zinc alloy sacrificial anode for the high-temperature crude oil deposition water environment, compared with the prior art, the preparation technology and method are mature, operation is easy and convenient, the proportion is reasonable, the service life is long, the protective effect is good, and the high-efficiency zinc alloy sacrificial anode can be widely applied to cathode protection under the high temperature conditions in the fields of seawater and offshore oil.

Description

technical field [0001] The invention relates to a high-efficiency zinc alloy sacrificial anode for high-temperature crude oil deposition water environment, which can be used for anticorrosion protection of metal equipment in high-temperature crude oil deposition water. Background technique [0002] Existing ordinary zinc alloy sacrificial anodes have problems such as polarity reversal and intergranular corrosion in high temperature environments, making ordinary zinc alloy anodes unusable in high temperature environments. Existing high-temperature zinc alloy sacrificial anodes are only used in environments below 70°C. If the temperature exceeds 70°C, the intergranular corrosion will intensify and the life of the anode will be shortened. In the crude oil deposition water commonly used for high-temperature zinc alloy anodes, the temperature can reach 80°C, and there is also the problem of crude oil fouling, which leads to the failure of the existing high-temperature zinc alloy ...

Claims

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Application Information

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IPC IPC(8): C23F13/14C22C18/04C22C18/00
CPCC22C18/00C22C18/04C23F13/14
Inventor 汪相辰玄晓阳赵永韬李威力钱建华
Owner SUNRUI MARINE ENVIRONMENT ENG
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