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High temperature corrosion inhibitor for atmospheric vacuum distillation apparatus

A technology of high-temperature corrosion inhibitor and atmospheric and vacuum distillation, which is applied in the field of high-temperature corrosion inhibitor, can solve the problems of poor corrosion inhibition rate, peeling of equipment pipelines, corrosion filling system, etc., and achieve the protection of equipment and process pipelines , Inhibit corrosion, high corrosion inhibition rate

Active Publication Date: 2009-05-27
金浦新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a high-temperature corrosion inhibitor for atmospheric and vacuum distillation equipment, aiming to solve the problem of poor corrosion inhibition rate of existing high-temperature corrosion inhibitors in the market, corrosion of filling systems and equipment pipelines during use at room temperature peeling problem

Method used

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  • High temperature corrosion inhibitor for atmospheric vacuum distillation apparatus
  • High temperature corrosion inhibitor for atmospheric vacuum distillation apparatus
  • High temperature corrosion inhibitor for atmospheric vacuum distillation apparatus

Examples

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Embodiment 1

[0018] Example 1: 30% oleic acid amide, 15% dodecyl dimethyl tertiary amine, 20% O, O-diisopropyl ammonium thiophosphate, 35% C10 heavy aromatics, mixed uniformly to form high temperature corrosion inhibition agent a

Embodiment 2

[0019] Example 2: 20% tall oil fatty acid amide, 5% tetraethylenepentamine, 10% nonylphenol sulfonic acid, 30% dimethyl dithiophosphate, 35% C10 heavy aromatics, mixed evenly to form a high-temperature corrosion inhibitor b

Embodiment 3

[0020] Embodiment 3: coconut oil fatty acid amide 10%, dodecyl primary amine 10%, dodecylphenol sulfonic acid 10%, monoethyl trithiophosphate 10%, C10 heavy aromatic hydrocarbon 60%, mix uniformly and form High temperature corrosion inhibitor c

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Abstract

The invention relates to a high-temperature corrosion inhibitor for an atmospheric vacuum distillation unit. The corrosion inhibitor consists of the following compounds: fat acid amide, organic amine, sulfonated alkylphenol, an organic parathion compound, organic phosphate and heavy aromatics, wherein the mixture ratio (weight percentage) of the compositions is: 10 to 30 percent of the fat acid amide, 5 to 15 percent of the organic amine, 0 to 10 percent of the sulfonated alkylphenol, 10 to 30 percent of the organic parathion compound, 0 to 10 percent of the organic phosphate and 35 to 65 percent of the heavy aromatics. The high-temperature corrosion inhibitor can effectively inhibit corrosion of naphthenic acid and high-temperature sulphur, has no negative influence on the normal operation of the device and achieves the aim of protecting equipment and a process pipeline in the process of processing crude oil.

Description

technical field [0001] The invention belongs to the field of chemical additives, and relates to a high-temperature corrosion inhibitor, in particular to a high-temperature corrosion inhibitor used in an atmospheric and vacuum distillation unit of an oil refinery. Background technique [0002] In recent years, with the heavy and inferior quality of crude oil, the corrosion of equipment and process pipelines in the process of crude oil processing has become increasingly serious. The main reason is naphthenic acid corrosion and high-temperature sulfur corrosion. Naphthenic acid will corrode at 200-400°C, especially in high-velocity areas such as the oil transfer line, the lower part of the atmospheric tower, and the middle and upper part of the vacuum tower. , if naphthenic acid corrosion and sulfur corrosion are carried out at the same time, the corrosion will be intensified. At present, naphthenic acid corrosion involves multiple sets of refining units in major refineries ac...

Claims

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Application Information

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IPC IPC(8): C23F11/167
Inventor 康国培王鹏翔王海英葛圣才周小丽
Owner 金浦新材料股份有限公司
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