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Corrosion inhibitor and scale remover for blast furnace gas residual pressure turbine power generation equipment and preparation method thereof

A technology for power generation equipment and blast furnace gas, applied in the field of equipment descaling, can solve the problems of local corrosion tar safety, hidden dangers, pitting corrosion, etc., and achieve the effect of solving the problems of local corrosion and pitting corrosion

Active Publication Date: 2017-07-11
西安瑞杰实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a corrosion inhibitor and descaling agent for blast furnace gas residual pressure turbine power generation equipment, which solves the problems caused by fouling in existing blast furnace gas residual pressure turbine power generation equipment, especially in pipelines with an operating temperature of about 80 °C. Pitting corrosion, local corrosion and potential safety hazards caused by tar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation process of Mannich base is specifically:

[0023] Weigh respectively according to mass percentage: 25%-45% of formaldehyde, 15%-30% of acetic acid, 15%-30% of acetone, 10%-30% of aniline, the sum of the mass percentages of the above components is 100%. At normal temperature, put formaldehyde into the reaction kettle, and slowly add acetic acid dropwise. After the formaldehyde and acetic acid are mixed evenly, after 4.5-5 hours of reaction, add acetone and aniline, and raise the temperature to 120°C for 3.5-4.5 hours to obtain Mann Nisi base.

[0024] The preparation method of the above-mentioned blast furnace gas residual pressure turbine power generation equipment corrosion inhibitor and scale remover of the present invention is specifically implemented according to the following steps:

[0025] Step 1, weigh 25% to 30% of N-cyclohexylcyclohexylamine by mass percentage, 10% to 15% of ammonium hydroxide solution with a mass concentration of 10% to 20%, ...

Embodiment 1

[0030] Weigh respectively by mass percentage: formaldehyde 25%, acetic acid 15%, acetone 30%, aniline 30%, the sum of the mass percentages of the above components is 100%. At room temperature, put formaldehyde into the reaction kettle, and slowly add acetic acid dropwise. After the formaldehyde and acetic acid are mixed evenly, after 4.5 hours of reaction, add acetone and aniline, and raise the temperature to 120°C for 3.5 hours to obtain the Mannich base. .

[0031] N-cyclohexylcyclohexylamine 30%, mass concentration 10% ~ 20% ammonium hydroxide solution 15%, morpholine 5%, octadecyl dimethyl tertiary amine 28%, N, N-diethylethylamine 15%, Mannich base 7%, the sum of the mass percentages of the above components is 100%; the weighed N-cyclohexylcyclohexylamine, ammonium hydroxide, morpholine, octadecane Dimethyl tertiary amine and N,N-diethylethylamine are fully mixed and stirred uniformly, then Mannich base is added, and the stirring reaction is continued at room temperature...

Embodiment 2

[0033] Weigh respectively according to mass percentage: 35% of formaldehyde, 25% of acetic acid, 20% of acetone, 20% of aniline, the sum of the mass percentages of the above components is 100%. At room temperature, put formaldehyde into the reaction kettle, and slowly add acetic acid dropwise. After the formaldehyde and acetic acid are mixed evenly, after 4 hours of reaction, add acetone and aniline, and the temperature rises to 120°C for 4 hours to obtain the Mannich base.

[0034] N-cyclohexylcyclohexylamine 27%, mass concentration of 10% to 20% ammonium hydroxide solution 12%, morpholine 3%, octadecyl dimethyl tertiary amine 27%, N, N-diethylethylamine 12%, Mannich base 19%, the sum of the mass percentages of the above components is 100%; the weighed N-cyclohexylcyclohexylamine, ammonium hydroxide, morpholine, octadecane Dimethyl tertiary amine and N,N-diethylethylamine are fully mixed and stirred uniformly, then Mannich base is added, and the stirring reaction is continued...

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PUM

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Abstract

The invention discloses a corrosion inhibition descaling agent for a blast furnace gas excess pressure turbine power generation device. The corrosion inhibition descaling agent comprises, by mass, 25%-30% of N-dicyclohexylaminenitrite, 10%-15% of ammonium hydroxide solution with the mass concentration of 10%-20%, 2%-5% of morpholine, 25%-28% of octadeyl dimethyl tertiary amine, 10%-15% of N,N-diethylethanamine and 7%-28% of Mannich base. The sum of the mass percent of the components is 100%. The invention further discloses a preparing method of the corrosion inhibition descaling agent. The corrosion inhibition descaling agent for the blast furnace gas excess pressure turbine power generation device can effectively solve the problems of local corrosion and pitting corrosion of a pipeline, and meanwhile the removing rate of oily dirt can reach 85% or higher.

Description

technical field [0001] The invention belongs to the technical field of equipment descaling, and relates to a corrosion inhibitor and scale remover for blast furnace gas residual pressure turbine power generation equipment, and also relates to a preparation method of the corrosion inhibitor and scale remover. Background technique [0002] The blast furnace gas residual pressure turbine power generation device is mainly used to recover the pressure energy and heat energy of the by-products (blast furnace gas) produced in the blast furnace smelting process, so that the gas can be converted into mechanical energy through a turbo expander, and then The conversion of mechanical energy into electrical energy not only recovers the wasted energy but also effectively reduces the noise pollution on site. It is a very good energy-saving and environmental protection device for iron and steel enterprises. [0003] The medium of the blast furnace gas residual pressure turbine power generat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/02
Inventor 郝靖熊海
Owner 西安瑞杰实业股份有限公司
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