Scale and corrosion inhibitor used for hydrogenation device and synthesis method thereof
A technology of scale and corrosion inhibitors and hydrogenation devices, which is applied in the fields of treatment equipment corrosion/scaling inhibition, petroleum industry, hydrocarbon oil treatment, etc. It can solve the problems of easy pollution of the environment, poisonous scale and corrosion inhibitors, etc., and achieves a synthetic route Simple, corrosion-inhibiting, cheap and readily available raw materials
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Embodiment 1
[0031] Weigh 40 grams of polyoxyethylene-based monoamine compound, 20 grams of deionized purified water and 20 grams of ethanol, add them to the stirrer, wait until the temperature rises to 80 ° C, maintain this temperature for 30 minutes under the condition of stirring, and then weigh them respectively Take 10 grams of polyethylene polyamine and 10 grams of tetraethylene triamine, add them into the stirrer, keep the temperature at 80° C., and maintain this temperature for 2 hours while stirring. Naturally cooled to room temperature, the scale and corrosion inhibitor can be obtained.
Embodiment 2
[0033] Weigh 30 grams of polyoxyethylene-amine compound, 20 grams of deionized purified water and 20 grams of ethanol, add them to the stirrer, wait until the temperature rises to 80 ° C, maintain this temperature for 30 minutes while stirring, and then weigh them respectively Take 15 grams of polyethylene polyamine and 15 grams of tetraethylene triamine, add them in the stirrer, keep the temperature at 80° C., and maintain this temperature for 2 hours while stirring. Naturally cooled to room temperature, the scale and corrosion inhibitor can be obtained.
Embodiment 3
[0035] Weigh 35 grams of polyoxyethylene diamine compound, 15 grams of deionized purified water and 20 grams of ethanol, add them to the stirrer, wait until the temperature rises to 80 ° C, maintain this temperature for 30 minutes while stirring, and then weigh them respectively Get 18 grams of polyethylene polyamine and 12 grams of tetraethylene triamine, add in the stirrer, keep constant temperature 80 ℃, maintain this temperature under the situation of stirring for 2 hours. Naturally cooled to room temperature, the scale and corrosion inhibitor can be obtained.
[0036] By analyzing the iron ion analysis corrosion rate of the follow-up sulfur-containing sewage, it is found that the average iron ion before injection is 5-6ppm, after adding the corrosion inhibitor of the present invention, the iron ion is controlled at about 1ppm, and the basic corrosion inhibition rate is 80-90 %.
[0037] After testing, the wax oil hydrotreating unit of a refinery was forced to shut down t...
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