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Apparatus and method for online monitoring pH value in MES production

A ph value, ph meter technology, applied in the direction of ratio control, chemical variable control, non-electric variable control, etc., can solve the problems of pH value failure of the system, increase of freezing point, misleading operators, etc., to ensure product quality and safe production, The effect of ensuring product quality and safe production, improving accuracy and reliability

Inactive Publication Date: 2006-09-27
ZANYU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, directly measuring the pH value in the process material will often mislead the operator's judgment and make wrong decisions.
In addition, in the neutralization process of MES production, when the amount of alkali is too large, it will cause saponification reaction to generate disodium salt, etc., which will increase the freezing point of the material. Determination of value completely failed

Method used

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  • Apparatus and method for online monitoring pH value in MES production
  • Apparatus and method for online monitoring pH value in MES production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Divert a small amount of materials from the main line or mixer of the neutralization system to the static mixer. At the same time, use a pump to pump water (the ratio of material to water: 0.1-15: 100) and heat it to the required temperature (25 ℃~50℃) and then enter the static mixer. The evenly mixed diluted material enters the fluid tube inserted with the pH measuring electrode. The pH value is displayed on the pH meter, and the electrical signal is transmitted to the alkali quantity controller by the computer. The program controls the alkali used for neutralization, and the diluent flowing out of the fluid pipe is returned to the feed pipe before neutralization to complete a cycle to achieve the purpose of accurate measurement and control of the pH value of the neutralization system.

Embodiment 2

[0026] Divert a small amount of material from the main line or mixer of the neutralization system to the static mixer, and at the same time use a pump to pump water (the ratio of material to water: 0.5:100) and heat it to the desired temperature (35°C) by a heater Then enter the static mixer, the evenly mixed diluent enters the fluid tube inserted with the pH measuring electrode, the pH value is displayed on the pH meter, and the electrical signal is transmitted to the alkali quantity controller by the computer program to control the neutralization. Alkali, the diluent flowing out of the fluid pipe is returned to the feed pipe before neutralization to complete a cycle to achieve the purpose of accurate measurement and control of the pH value of the neutralization system.

Embodiment 3

[0028] Divide a small amount of material from the main line or mixer of the neutralization system to the static mixer, and at the same time use a pump to pump water (the ratio of material to water: 5.0:100) and heat it to the desired temperature (25°C) by a heater Then enter the static mixer, the evenly mixed diluent enters the fluid tube inserted with the pH measuring electrode, the pH value is displayed on the pH meter, and the electrical signal is transmitted to the alkali quantity controller by the computer program to control the neutralization. Alkali, the diluent flowing out of the fluid pipe is returned to the feed pipe before neutralization to complete a cycle to achieve the purpose of accurate measurement and control of the pH value of the neutralization system.

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Abstract

This invention relates to an apparatus and method for online monitoring pH value in MES production. Wherein, dividing a little flow from the centralization system main pipeline or mixer to the static mixer, pumping water to heat till given temperature and flow into the static mixer; putting the even diluted material into the fluid pipe inserted pH measurement electrode; displaying the pH value on pH meter, sending the signal to alkali controller to control the alkali used in neutralization; recovering the diluted material into material pipe for one-time circulation. This invention improves neutralization system accuracy and reliability, and then ensures the quality and security.

Description

1. Technical Field [0001] The invention relates to a device and method for online monitoring of pH value, and more particularly to a device and method for online monitoring of pH value in the production of MES (fatty acid methyl ester sulfonate). 2. Background technology [0002] Fatty acid methyl ester sulfonate (MES for short) is a green and environmentally friendly surfactant made from animal and vegetable fats and oils through transesterification, hydrogenation, sulfonation, bleaching, neutralization and drying processes. Used in washing products and other fields. In the process of MES neutralization, due to the use of hydrogen peroxide, methanol, etc. in the previous bleaching process, it is inevitable that alkali and residual hydrogen peroxide will meet during neutralization, especially when the pH value of the neutralization system material is high, it is easy to interact with the residue. The hydrogen peroxide chemically reacts to produce oxygen, which is accompanied by e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D21/02C07C309/02
Inventor 黄亚茹方银军邹欢金冯晚静葛赞
Owner ZANYU TECH GRP CO LTD
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