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Corrosion inhibitor for hydrogenation plant

A technology of hydrogenation unit and corrosion inhibitor, which is applied in the fields of treatment equipment corrosion/fouling inhibition, petroleum industry, treatment of hydrocarbon oil, etc., can solve problems such as corrosion, achieve the effects of easy availability of raw materials, simple synthesis route, and ensure stable operation.

Inactive Publication Date: 2006-04-05
上海贵通新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In most corrosion inhibitors, there are metals and other elements that interfere with the activity of the catalyst, which will have a great impact on the normal production of the device and also have a great impact on the subsequent processing of oil products; in addition, the corrosion environment of the hydrogenation unit Unlike distillation units and catalytic cracking units, corrosion occurs from acidic to alkaline environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Proportion (weight%) is: 10% of fatty nitrogen-containing compounds, 20% of aromatic sulfur-containing compounds, 25% of organic acid esters, 30% of aromatic hydrocarbons, and 15% of imidazoline derivatives;

Embodiment 2

[0017] Proportion (weight%) is: 15% of fatty nitrogen-containing compounds, 15% of aromatic sulfur-containing compounds, 0% of organic acid esters, 70% of aromatic hydrocarbons, and 0% of imidazoline derivatives;

Embodiment 3

[0019] Proportions (weight %) are: 20% of fatty nitrogen-containing compounds, 10% of aromatic sulfur-containing compounds, 15% of organic acid esters, 45% of aromatic hydrocarbons, and 10% of imidazoline derivatives;

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PUM

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Abstract

The invention relates to corrosion inhibitor for hydrogenation device with constituent as: 10-30% fat nitrogen-containing compound, 10-20% aromatic sulfur-containing compound, 0-25% organic acid esters, 15-70% aromatics, and 0-25% imidazoline derivative. A little this product can effective inhibiting corrosion and salt dirty without any negative effect to product property and successive process fit to high-concentration H2S-HCl-H2O acidic or H2S-HCl-NH3-H2O basic system. It can form dense monomolecular layer protection membrane on metal surface to prevent hydrogen embrittlement phenomenon and fit to heat exchanger, air cooler and others.

Description

technical field [0001] The invention belongs to the field of chemical additives, and relates to a corrosion inhibitor, in particular to a corrosion inhibitor for preventing corrosion of hydrogenation unit equipment and pipelines. Background technique [0002] Petroleum hydrogenation technology is an important means of refining, upgrading and heavy oil processing of petroleum products. Its notable features are high temperature, high pressure and hydrogenation. Since the purpose of the process is to remove S, N, Cl, O and other non-ideal component elements in hydrocarbons, it is accompanied by H 2 S, NH 4 For the formation of compounds such as Cl, serious H 2 S-HCl-NH 3 -H 2 Type O corrosion. [0003] According to the development needs of the petroleum industry and the changes in the demand structure of petroleum products, the proportion of hydrocracking and refining and complete sets of application technologies is gradually increasing; at the same time, the trend of proc...

Claims

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Application Information

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IPC IPC(8): C10G75/02
Inventor 徐文忠
Owner 上海贵通新材料科技有限公司
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