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Determination method of hydrogenation efficiency, oxidation efficiency and raffinate concentration in the process of producing hydrogen peroxide by anthraquinone method

A determination method and technology of hydrogenation efficiency, applied in the field of analysis and detection, can solve the problems of inability to report analysis data in time, labor-intensive operators, and time-consuming analysis, etc., to reduce the time of direct contact with working fluid, labor-intensive, and improve Effects of the operating environment

Active Publication Date: 2018-12-25
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the defects in the prior art, the object of the present invention is to provide a simple operation, which can quickly and accurately analyze and measure the hydrogen peroxide process including hydrogenation efficiency, oxidation efficiency and raffinate concentration indicators by anthraquinone method. It solves the problem that the labor intensity of operators in the existing process is high, and the analysis data cannot be reported in time due to high analysis frequency, many devices, and long analysis time, and effectively improves the operating environment

Method used

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  • Determination method of hydrogenation efficiency, oxidation efficiency and raffinate concentration in the process of producing hydrogen peroxide by anthraquinone method
  • Determination method of hydrogenation efficiency, oxidation efficiency and raffinate concentration in the process of producing hydrogen peroxide by anthraquinone method
  • Determination method of hydrogenation efficiency, oxidation efficiency and raffinate concentration in the process of producing hydrogen peroxide by anthraquinone method

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Effect test

Embodiment 1

[0032] Step (1): the preparation of standard titration solution: the H 2 SO 4 , Ce(SO 4 ) 2 、H 2 O is prepared in a mass ratio of 2:10:100 to obtain a standard titration solution; wherein, Ce(SO 4 ) 2 The concentration is 0.25mol / L.

[0033] Step (2): blank titration: add 10mL HCl content in titration cup and be the hydrochloric acid buffer solution of 2.5mol / L (the blank titration when measuring the hydrogenation efficiency, add 30mL heavy aromatics in addition, its main component is C8 and C9 aromatics), With the standard titration solution prepared in step (1), use a general-purpose potentiometric titrator to titrate the hydrochloric acid buffer solution, and titrate to the end point by setting the end point potential method, that is, stop the titration;

[0034] Step (3): Titration Test:

[0035] a. Determination of hydrogenation efficiency:

[0036] Add 5mL of hydrogenated liquid samples (mainly including hydroanthraquinone, trioctyl phosphate, and heavy aromatics...

Embodiment 2

[0045] Step (1): the preparation of standard titration solution: the H 2 SO 4 , Ce(SO 4 ) 2 、H 2 O is prepared in a mass ratio of 10:2:100 to obtain a standard titration solution; wherein, Ce(SO 4 ) 2 The concentration is 0.13mol / L.

[0046] Step (2): blank titration: add 15mL HCl content in the titration cup and be the hydrochloric acid buffer solution of 2.5mol / L (the blank titration when measuring hydrogenation efficiency, add 20mL heavy aromatics in addition, its main component is C8 and C9 aromatics), With the standard titration solution prepared in step (1), use a general-purpose potentiometric titrator to titrate the hydrochloric acid buffer solution, and titrate to the end point by setting the end point potential method, that is, stop the titration;

[0047] Step (3): Titration Test:

[0048] a. Determination of hydrogenation efficiency:

[0049] Add 2mL of hydrogenated liquid samples (mainly including hydroanthraquinone, trioctyl phosphate, and heavy aromatics...

Embodiment 3

[0059] Step (1): the preparation of standard titration solution: the H 2 SO 4 , Ce(SO 4 ) 2 、H 2 O is prepared in a mass ratio of 5:4:100 to obtain a standard titration solution; wherein, Ce(SO 4 ) 2 The concentration is 0.04mol / L.

[0060] Step (2): blank titration: add 10mL HCl content in titration cup and be the hydrochloric acid buffer solution of 3mol / L (blank titration when measuring hydrogenation efficiency, add 25mL heavy aromatics in addition, its main component is C8 and C9 aromatics), with The standard titration solution prepared in step (1) adopts a general-purpose potentiometric titrator to titrate the hydrochloric acid buffer solution, and titrates to the end point by setting the end point potential method, that is, stops the titration;

[0061] Step (3): Titration Test:

[0062] a. Determination of hydrogenation efficiency:

[0063] Add 0.5mL hydrogenated liquid sample (mainly including hydroanthraquinone, trioctyl phosphate, and heavy aromatics) to the ...

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Abstract

The invention discloses a method for measuring hydrogenation efficiency, oxidation efficiency and extraction raffinate concentration in the process of producing hydrogen peroxide through an anthraquinone method. The method comprises the steps that H2SO4, Ce(SO4)2 and H2O are compounded according to a certain ratio to obtain titrant, a universal potentiometric titration apparatus is adopted for carrying out blank titration at first and then carrying out titration on the hydrogenation efficiency, oxidation efficiency and extraction raffinate concentration, and after titration is carried out on a terminal point, the hydrogenation efficiency, oxidation efficiency and extraction raffinate concentration are figured out according to the amount of titrant consumed by terminal point titration. The method is easy to implement and can rapidly and accurately analyze and measure the hydrogenation efficiency, oxidation efficiency and extraction raffinate concentration in the process of producing hydrogen peroxide through the anthraquinone method. The problems that in the prior art, the labor intensity of operators is large, and analysis data cannot be submitted in time due to high analysis frequency, too many devices and long analysis time are solved, and the operation environment is effectively improved.

Description

technical field [0001] The invention relates to a method for measuring hydrogenation efficiency, oxidation efficiency and raffinate concentration in the process of producing hydrogen peroxide by anthraquinone method, and belongs to the field of analysis and detection. Background technique [0002] As a green chemical, hydrogen peroxide is widely used in the three major fields of bleaching, chemical synthesis and environmental protection, and the market demand at home and abroad is growing rapidly. The anthraquinone process control analysis items in the production of hydrogen peroxide in the prior art include the determination of hydrogenation efficiency, oxidation efficiency, and raffinate concentration. Hydrogenation efficiency, oxidation efficiency and raffinate concentration are important analysis items. The hydrogenation efficiency and oxidation efficiency directly affect the yield and quality of hydrogen peroxide. The raffinate concentration is the most important contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/42C01B15/023
Inventor 何世新谭建忠陆业丁左冯正坤刘其良
Owner CHINA PETROLEUM & CHEM CORP
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