Metal corrosion inhibitor
A metal corrosion inhibitor and technology of corrosion inhibitor, applied in the field of metal corrosion prevention, can solve problems such as poor corrosion inhibition rate, and achieve the effects of increasing the protection area, good corrosion inhibition rate and tight arrangement
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[0032] Example 1
[0033] The corrosion inhibitor A of the present invention consists of: imidazoline amide with aromatic ring: 50%; linear imidazoline amide: 20%; thiourea: 2.5%; propynol: 2.5%; xylene: 25%.
[0034] Experimental conditions: 1000ppmHCl+1000ppmNaCl+160ppmH 2 S, static soaking for 6h 90℃
[0035] It can be seen from Table 1: Corrosion inhibitor A has a high corrosion inhibition rate in the range of PH value of 1.86 to 7.5, which can meet the needs of corrosion protection for the condensing and cooling system equipment at the top of the atmospheric and vacuum plant.
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[0036] Example 2
[0037] The corrosion inhibitor B of the present invention is composed of: imidazoline amide with aromatic ring: 20%; linear imidazoline amide: 50%; thiamine: 2.5%; propynol: 2.5%; gasoline: 25%.
[0038] Experimental conditions: 1000ppmHCl+1000ppmNaCl+160ppmH 2 S, static soaking for 6h 90℃
[0039]It can be seen from Table 2: Corrosion inhibitor B has a high corrosion inhibition rate in the range of PH value of 1.86 to 7.5, which can meet the needs of corrosion protection for the equipment of the condensing cooling system at the top of the atmospheric and vacuum plant.
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[0040] Example 3
[0041] The corrosion inhibitor C of the present invention consists of: imidazoline amide with aromatic ring: 30%; linear imidazoline amide: 30%; thiourea: 2.5%; propynol: 2.5%; diesel: 35%.
[0042] Experimental conditions: 1000ppmHCl+1000ppmNaCl+160ppmH 2 S, static soaking for 6h 90℃
[0043] It can be seen from Table 3 that the corrosion inhibitor C has a high corrosion inhibition rate in the range of PH value of 1.86 to 7.5, which can meet the needs of corrosion protection for the equipment of the condensing cooling system at the top of the atmospheric and vacuum plant.
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