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System and method for monitoring concentration of hydrogen peroxide in raffinate

A hydrogen peroxide concentration and monitoring system technology, which is applied in chemical method analysis, measuring devices, material electrochemical variables, etc., can solve the problems of inability to realize online monitoring, affecting the safety of devices, and high operational risks, so as to avoid residues. Impact, high accuracy, improved safety effect

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 hydrogen peroxide in the raffinate is mainly analyzed manually. 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 concentration of hydrogen peroxide in raffinate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] refer to figure 1 As shown, in the monitoring system for the hydrogen peroxide concentration in the raffinate of this embodiment, 5ml of the raffinate and 20ml of pure water are injected into the stirring separation tank 30 for each detection. After the sample injection is completed, the agitated separation tank 30 continues to stir for 30 s, and stands still for 30 s to separate layers. Each time, 2ml of the aqueous phase solution is drawn and injected into the detection unit 50 . The detection unit 50 of this embodiment adopts potentiometric titration detection. After the test is complete, rinse three times. In this embodiment, continuous detection is set, that is, the next detection process is automatically started after one detection process is completed.

[0059] 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

[0061] refer to figure 1 As shown, in the monitoring system for the hydrogen peroxide concentration in the raffinate of this embodiment, 5ml of the raffinate and 20ml of pure water are injected into the stirring separation tank 30 for each detection. After the sample injection is completed, the agitated separation tank 30 continues to stir for 30 s, and stands still for 30 s to separate layers. Each time, 2ml of the aqueous phase solution is drawn and injected into the detection unit 50 . The detection unit 50 of this embodiment adopts potentiometric titration detection. After the test is complete, rinse three times. In this embodiment, it is set to perform a detection every 1 hour.

[0062] This embodiment realizes the on-line monitoring of the concentration of hydrogen peroxide in the raffinate, which improves the safety of the device.

Embodiment 3

[0064] refer to figure 1 As shown, in the monitoring system for the concentration of hydrogen peroxide in the raffinate of this embodiment, 3 ml of raffinate and 15 ml of pure water are injected into the stirring separation tank 30 for each detection. After the sample injection is completed, the agitated separation tank 30 continues to stir for 20 seconds, and stands for 20 seconds to separate layers. Each time, 1ml of the aqueous phase solution is drawn and injected into the detection unit 50 . The detection unit 50 of this embodiment adopts potentiometric titration detection. After the test is complete, rinse three times. In this embodiment, continuous detection is set, that is, the next detection process is automatically started after one detection process is completed.

[0065] 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.

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Abstract

The invention discloses a system for monitoring the concentration of hydrogen peroxide in raffinate, the raffinate is raffinate in an anthraquinone process hydrogen peroxide production device, the monitoring system comprises: a sampling pipeline connected with a sampling port of the raffinate; a stirring and separating tank, used for stirring and mixing pure water and the raffinate passing through the sampling pipeline, standing and separating into a water phase and an organic phase; and a detection unit, used for detecting the concentration of hydrogen peroxide in the water phase obtained by standing and separation. The invention also discloses a method for monitoring the concentration of hydrogen peroxide in raffinate. Through online sampling, separation and detection, online monitoring of the hydrogen peroxide concentration of the raffinate in the anthraquinone process hydrogen peroxide production device is realized, and the production safety is improved.

Description

technical field [0001] The invention relates to the technical field of hydrogen peroxide production, in particular to a monitoring system and method for hydrogen peroxide concentration in raffinate. 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 has a high degree of automatic control, low product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14G01N1/38G01N1/34G01N21/00G01N27/26G01N31/16
CPCG01N1/14G01N1/38G01N1/34G01N21/00G01N27/26G01N31/164G01N2001/1031
Inventor 张帆贾学五钱亚男王振刚刘静如徐伟石宁
Owner CHINA PETROLEUM & CHEM CORP
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