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System and method for monitoring acidity of oxidation liquid in device for producing hydrogen peroxide by anthraquinone method

A hydrogen peroxide and monitoring system technology is applied in the field of monitoring systems for the acidity of an oxidizing liquid in a device for producing hydrogen peroxide by an anthraquinone method, and can solve the problems of inability to realize on-line monitoring, affecting the safety of the device, and high operational risk, and achieving The effect of avoiding residual influence, simple structure, and improving safety

Pending Publication Date: 2021-10-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of manual off-line sampling and measurement is mainly used. The operation is dangerous and time-consuming, and online monitoring cannot be realized, which affects the safety of the device.

Method used

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  • System and method for monitoring acidity of oxidation liquid in device for producing hydrogen peroxide by anthraquinone method
  • System and method for monitoring acidity of oxidation liquid in device for producing hydrogen peroxide by anthraquinone method

Examples

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Effect test

Embodiment 1

[0074] refer to figure 1 As shown, the monitoring system of this embodiment is used to monitor the acidity of the oxidizing solution in the device for producing hydrogen peroxide by anthraquinone method.

[0075]In this embodiment, 2ml of oxidizing solution and 20ml of pure water are injected into the analysis pool 151 for each detection. After the sample injection is completed, the analysis cell 151 continues to stir for 30 seconds, and stands still for 30 seconds to separate layers. The acidity value of the separated aqueous phase solution in the analysis cell 151 is detected by the detection component. Rinse 8 three times after each test. In this embodiment, continuous detection is set, that is, the next detection process is automatically started after one detection process is completed.

[0076] When this embodiment runs for 800 hours, more than 9,000 detections are completed, realizing long-period, high-frequency online monitoring and improving the safety of the device...

Embodiment 2

[0078] refer to figure 1 As shown, the monitoring system of this embodiment is used to monitor the acidity of the oxidizing solution in the device for producing hydrogen peroxide by anthraquinone method.

[0079] In this embodiment, 3ml of oxidizing solution and 15ml of pure water are injected into the analysis pool 151 for each detection. After the sample injection is completed, the analysis cell 151 continues to stir for 20 seconds, and stands still for 20 seconds to separate layers. The acidity value of the separated aqueous phase solution in the analysis cell 151 is detected by the detection component. After each test, rinse three times. In this embodiment, it is set to perform detection every 1 hour.

[0080] The monitoring system of this embodiment realizes the on-line monitoring of the acidity of the oxidizing solution in the device for producing hydrogen peroxide by anthraquinone method, and improves the safety of the device.

Embodiment 3

[0082] refer to figure 2 As shown, the monitoring system of this embodiment is used to monitor the acidity of the oxidizing solution in the device for producing hydrogen peroxide by anthraquinone method.

[0083] In this embodiment, 100ml of oxidizing solution is drawn into the buffer pool 230 for each sampling, and 20ml of oxidizing solution is extracted from the buffer pool 230 and 20ml of pure water is injected into the analysis pool 251 for each detection. After the sample injection is completed, the analysis cell 251 continues to stir for 25 seconds, and stands still to separate layers for 25 seconds. The detection unit 250 of this embodiment adopts potentiometric titration detection. Rinse the analytical cell three times after each test. Three parallel detections were performed for each sampling. In this embodiment, continuous detection is set, that is, the next sampling and detection process is automatically started after three detection processes of one sampling ar...

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Abstract

The invention discloses a system for monitoring acidity of oxidation liquid in device for producing hydrogen peroxide by an anthraquinone method, and the system comprises a sampling pipeline which is connected with an oxidation liquid sampling port; a detection unit, comprising an analysis tank which is used for stirring and mixing pure water and the oxidation liquid passing through the sampling pipeline, standing and separating the pure water and the oxidation liquid into a water phase and an organic phase; and a detection assembly, used for detecting the acidity value of the water phase obtained by standing separation in the analysis tank. The invention further discloses a method for monitoring the acidity of the oxidation liquid in the device for producing the hydrogen peroxide through the anthraquinone method. Through online sampling, separation and detection, online monitoring of the acidity of the oxidation liquid in the device for producing hydrogen peroxide by the anthraquinone method is realized, and the safety of the device is improved.

Description

technical field [0001] The invention relates to the technical field of hydrogen peroxide production, in particular to a system and method for monitoring the acidity of an oxidizing solution in an anthraquinone method for producing hydrogen peroxide. Background technique [0002] Hydrogen peroxide is one of the main basic chemical products in the world. It has oxidation and bactericidal effects. It can be used as a strong oxidant, bleach, disinfectant, deoxidizer, etc. It is widely used in chemical industry, textile, papermaking, military, electronics, medicine, etc. industry. However, hydrogen peroxide is a dangerous product, and the safety of its production equipment is particularly important. The anthraquinone method is the main method for producing hydrogen peroxide. The anthraquinone method uses anthraquinone compounds as hydrogen carriers to react hydrogen and oxygen to generate hydrogen peroxide aqueous solution, that is, hydrogen peroxide. The anthraquinone method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14G01N1/38G01N1/34G01N31/16
CPCG01N1/14G01N1/38G01N1/34G01N31/164G01N2001/1031
Inventor 张帆贾学五王振刚刘静如钱亚男徐伟石宁
Owner CHINA PETROLEUM & CHEM CORP
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