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Metal pickling corrosion inhibiting solution and preparation method and use thereof

A metal acid and corrosion inhibitor technology, applied in the field of metal pickling corrosion and protection, to achieve the effect of high corrosion inhibition rate, low production cost and low toxicity

Active Publication Date: 2011-01-12
LUZHOU PINCHUANG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no relevant reports at home and abroad on the preparation of metal pickling corrosion inhibitors using the extracted components of distiller's grains

Method used

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  • Metal pickling corrosion inhibiting solution and preparation method and use thereof
  • Metal pickling corrosion inhibiting solution and preparation method and use thereof
  • Metal pickling corrosion inhibiting solution and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Preparation of metal pickling corrosion inhibitor of the present invention

[0032] Weigh 30g of wet distiller’s grains, put it into a 1.5L large beaker, accurately measure 1L of 5% (mass concentration, the same below) of H 2 SO 4 Pour the solution into a beaker with wet vinasse, seal the beaker with plastic wrap after stirring, let stand at room temperature for 72 hours, stir again, and then filter to filter out insoluble impurities. The resulting solution is the metal pickling corrosion inhibitor .

Embodiment 2

[0033] Example 2 Preparation of metal pickling corrosion inhibitor of the present invention

[0034] Weigh 20g of wet distiller’s lees, put it into a 1.5L large beaker, accurately measure 1L of 5% HCl solution and pour it into the beaker with wet distiller’s lees, seal the beaker with plastic wrap after stirring, and place it at a constant temperature at room temperature Stir in a magnetic stirrer for 36 hours, then stand for 30 minutes, and finally filter to filter out insoluble impurities. The resulting solution is the metal pickling corrosion inhibitor.

Embodiment 3

[0035] Example 3 Preparation of metal pickling corrosion inhibitor of the present invention

[0036] Weigh 10g of dried distiller’s grains, put it into a large 1.5L beaker, and accurately measure 1L of 5% H 2 SO 4 Pour the solution into a beaker with dried vinasse, seal the beaker with plastic wrap, place it in an ultrasonic cleaner at room temperature, and extract the maximum ultrasonic power for 72 hours (ultrasonic power: instrument model: ASS5150B, power: 180W, ultrasonic frequency : 40 KHz), then stand for 20 minutes, and finally filter to filter out insoluble impurities. The resulting solution is the metal pickling corrosion inhibitor.

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Abstract

The invention relates to metal pickling corrosion inhibiting solution and a preparation method and a use thereof, belonging to the field of metal pickling corrosion and protection. The technical problem to be solved by the invention is to provide the metal pickling corrosion inhibiting solution with better corrosion inhibition effect. The metal pickling corrosion inhibiting solution is an organicsolvent of wine lees or an inorganic acid extract. The invention provides a new way for utilizing the wine lees and simultaneously provides the new green environment-friendly metal pickling corrosioninhibiting solution which has high corrosion inhibition efficiency, low toxicity, low production cost, can solve a plurality of defects in the traditional metal pickling corrosion inhibiting solutionand further has broad application prospects.

Description

Technical field [0001] The invention relates to a metal pickling corrosion inhibitor, a preparation method and application thereof, and belongs to the field of metal pickling corrosion and protection. Background technique [0002] Metal corrosion is one of the most important aspects of corrosion. Metal corrosion not only brings huge economic losses to society, but also brings great harm to people’s lives and production. Therefore, people continue to conduct research on metal corrosion and protection, hoping to make efforts It can minimize metal corrosion. Metal pickling corrosion is also an important part of metal corrosion. At present, one of the most important and effective methods to reduce metal pickling corrosion is to add corrosion inhibitors or metal pickling corrosion inhibitors during the pickling process. In recent years, the research on the preparation of metal pickling corrosion inhibitors and corrosion inhibitors has made significant progress, gradually moving from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/04
Inventor 谢斌赖川易彬曾倪卢中明
Owner LUZHOU PINCHUANG TECH CO LTD
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