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Filming corrosion inhibitor for hydrorefining apparatus

A hydrorefining and film-forming technology, which is applied in the fields of processing equipment corrosion/fouling inhibition, petroleum industry, and hydrocarbon oil processing.

Inactive Publication Date: 2007-08-22
GANSU LIXIN CHEM ASSISTANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Some corrosion inhibitors have been used in many refinery hydrofinishing units to prevent the corrosion of the tower top system, but the effect is very small, and even production problems caused by excessive alkali value, such as fouling and blockage of pipes, containing Catalyst poisoning incidents caused by harmful components in the environment or subsequent production processes, etc., cannot meet normal production requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 50 kg of imidazoline oleate, add it to a stirrer, add 15 kg of industrial isopropanol and stir for 20 minutes, then add 23 kg of desalted water and 12 kg of propynyl alcohol and stir thoroughly for 30 minutes to form a film Sexual corrosion inhibitor.

Embodiment 2

[0024] Weigh 300 kg of imidazoline naphthenate, add it to a stirrer, add 150 kg of industrial isopropanol and stir for 20 minutes, then add 400 kg of desalted water and 150 kg of propynyl alcohol and stir for 30 minutes to obtain the product Membrane corrosion inhibitor.

Embodiment 3

[0026] Weigh 40 grams of imidazoline oleate, add it to a stirrer, add 15 grams of industrial isopropanol and stir for 20 minutes, then add 35 grams of desalted water and 10 grams of butynol and stir for 30 minutes to form a film Sexual corrosion inhibitor.

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PUM

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Abstract

The present invention discloses one kind of filming corrosion inhibitor for hydrorefining apparatus. The filming corrosion inhibitor is re-compounded with imidazoline 30-50 wt%, propiolic alcohol 11-15 wt%, organic solvent 20-40 wt%, and desalted water 37-65 wt%. It is prepared through adding imidazoline, adding organic solvent and stirring for 20 min, adding desalted water and propiolic alcohol, and stirring for 30 min. It has normal added amount of 10-15 ppm.

Description

technical field [0001] The invention belongs to the field of chemical additives and relates to a corrosion inhibitor, in particular to a film-forming corrosion inhibitor used in a hydrofining device. Background technique [0002] In recent years, with the gradual increase of the country's requirements for refined oil products, refineries must carry out hydrofining treatment on gasoline, kerosene, diesel oil and lubricating oil to improve the quality of oil products, so as to meet the requirements of the country's environmental protection, but the quality of crude oil is still low. Accelerated deterioration, the acid value and salt content of oil products continue to increase, which intensifies the corrosion rate of the overhead system of the hydrogenation unit, which seriously plagues production safety and oil quality. [0003] Some corrosion inhibitors have been used in many refinery hydrofinishing units to prevent the corrosion of the tower top system, but the effect is ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G75/02
Inventor 慕喜成
Owner GANSU LIXIN CHEM ASSISTANT