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Multifunctional coking delaying corrosion inhibitor and preparation method thereof

A technology of delayed coking and corrosion inhibitor, which is used in cracking, non-catalytic thermal cracking, and anti-corrosion during distillation. Operation period, effect of inhibiting salt formation

Inactive Publication Date: 2012-11-14
天津市瑞德赛恩新材料开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems that most of the corrosion inhibitors in the prior art have low anticorrosion effect and single function, and provide a multifunctional corrosion inhibitor for delayed coking, which is applied to the top of the delayed coking fractionation tower. The use of it can effectively inhibit the corrosion of the top of the fractionation tower, inhibit the salt accumulation on the tray, and prolong the operation period of the device

Method used

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  • Multifunctional coking delaying corrosion inhibitor and preparation method thereof
  • Multifunctional coking delaying corrosion inhibitor and preparation method thereof
  • Multifunctional coking delaying corrosion inhibitor and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] A preparation method of a delayed coking multifunctional corrosion inhibitor, comprising the steps of:

[0026] Pump 270g of 200# solvent oil, 200g of imidazoline amide, 100g of polyvinylpolyamine, and 300g of octadecylamine into the stirring tank in sequence, and the stirring speed is 350r / min. After stirring for 30min, add 30g of nonylphenol (n=10) phosphate In the stirred tank, continue to stir for 25 minutes, and pack into products.

Embodiment 2

[0028] A preparation method of a delayed coking multifunctional corrosion inhibitor, comprising the steps of:

[0029] Pump 400g of 200# solvent oil, 190g of imidazoline amide, 110g of polyethylene polyamine, and 250g of octadecylamine into the stirring tank in sequence, and the stirring speed is 350r / min. After stirring for 30min, add 50g of nonylphenol (n=10) phosphate In the stirred tank, continue to stir for 25 minutes, and pack into products.

Embodiment 3

[0031] A preparation method of a delayed coking multifunctional corrosion inhibitor, comprising the steps of:

[0032] Pump 310g of 200# solvent oil, 210g of imidazoline amide, 150g of polyvinylpolyamine, and 290g of octadecylamine into the stirring tank in sequence, and the stirring speed is 350r / min. After stirring for 30min, add 40g of nonylphenol (n=10) phosphate In the stirred tank, continue to stir for 25 minutes, and pack into products.

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Abstract

The invention relates to a multifunctional coking delaying corrosion inhibitor and a preparation method of the multifunctional coking delaying corrosion inhibitor. The corrosion inhibitor comprises the components in percentage by mass as follows: 10 to 25% of imidazoline amide, 10 to 30% of polyethylene polyamine, 1 to 10% of nonyl phenol (n=10) ester phosphate, 10 to 35% of fatty amine, and 30 to 70% of 200# solvent oil, wherein the sum of the components in percentage by mass is 100%. The corrosion inhibitor prepared by the prepared method provided by the invention can effectively inhibit the corrosion on the top of a fractionating tower and pipelines at the top of the fractionating tower caused by acid gas H2S-HCl; the corrosion inhibitor is specifically suitable for a system with relatively high H2S, and also performs inhibiting to a salt deposition phenomenon at the top of the fractionating tower.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a delayed coking multifunctional corrosion inhibitor and a preparation method thereof. Background technique [0002] As a process of heavy oil processing, delayed coking has been more and more applied and developed because of its wide applicability and convenient operation. As the crude oil becomes heavier and inferior, especially the heteroatoms such as sulfur, oxygen, and nitrogen in the raw materials increase, the crude oil will produce corrosive substances such as hydrogen sulfide, sulfuric acid, ammonia, and cyanide due to heat and other reasons during the processing. , causing corrosion of equipment pipelines. Adding corrosion inhibitors to equipment has become the main measure to inhibit equipment corrosion because of its convenient operation and obvious effect. At present, most of the corrosion inhibitors in the prior art have the problems of not outstand...

Claims

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Application Information

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IPC IPC(8): C10G7/10C10G9/16C23F11/167
CPCC23F11/04C09K2208/32C23F14/02
Inventor 林洪新
Owner 天津市瑞德赛恩新材料开发有限公司
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