Method and device for determining acetic acid content in acetate cuprammonia

A technology of acetic acid content and measurement method, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve the problems of easy sucking back of the absorption liquid and reduction of measurement steps, etc., to achieve Simple operation steps, reduced measurement steps, and the effect of reduced operation steps

Inactive Publication Date: 2012-07-18
GUIZHOU XINGHUA CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention aims at the problem that the absorption liquid is easy to suck back in the existing acetic acid measurement method, improves the original measurement method, reduces the measurement steps, and determines the measurement result

Method used

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  • Method and device for determining acetic acid content in acetate cuprammonia
  • Method and device for determining acetic acid content in acetate cuprammonia
  • Method and device for determining acetic acid content in acetate cuprammonia

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Embodiment Construction

[0023] Assay method of the present invention is as follows:

[0024] 1) Reagents

[0025] 1) Sodium hydroxide standard solution C (NaOH) = 0.1mol / L

[0026] 2) Sulfuric acid solution C (1 / 2H 2 SO 4 )=6mol / L

[0027] 3) Phenolphthalein indicator 1g / L

[0028] 4) Cupric ammonia solution to be tested

[0029] Two), instrument

[0030] Such as figure 1 Shown, the measuring device of cupric acetate ammonia liquid acetic acid content comprises adjustable electric furnace 1 for heating distillation vessel, distillation vessel 2, condensation pipe 3 and receiver 4, and distillation flask 2 communicates with condensation pipe 3 by elbow 5, The lower end of the condensation pipe 3 extends into the receiver 4 . The distillation vessel 2 is a long-necked round bottom flask, and the receiver 4 is a flask.

[0031] Condenser 3 is a serpentine or spherical condenser.

[0032] Three), determination steps

[0033] 1) Use a pipette to accurately draw 10mL of the test solution, pour i...

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Abstract

The invention discloses a method and a device for determining acetic acid content in acetate cuprammonia. The determining method comprises the following steps: 1) adding sulfuric acid solution in a distillation container filled with diluted acetate cuprammonia; 2) heating and distilling the distillation container to obtain distillation solution; 3) adding a phenolphthalein indicator in the distillation container, and using sodium hydroxide standard solution for titration until the color of the distillation solution is pink; and 4) calculating the acetic acid content. The determining device comprises a heating unit used for heating the distillation container, the distillation container, a condenser pipe and a receiver, wherein the distillation container is communicated with the condenser pipe through a bend pipe, and the lower end of the condenser pipe stretches into the receiver. According to the acetic acid determining method, the operation steps are simple, and the determining result is accurate. According to the determining device, only one heating device is needed, the operation steps are reduced, and the determining cost is lowered.

Description

technical field [0001] The invention relates to a method and a device for measuring acetic acid content in copper acetate ammonia liquid in a synthetic ammonia production process. Background technique [0002] In the synthetic ammonia production process, copper acetate ammonia solution is used to wash CO and CO in the raw gas of synthetic ammonia 2 , the cleaning effect is not only related to the copper ratio in the copper ammonia solution, but also has a certain relationship with the acetic acid content in the copper acetate solution. Therefore, in the operation of refining raw gas, it is necessary to know the acetic acid content in the copper solution Timely adjustment plays an important role in refining quality. [0003] The determination of the acetic acid content in the copper acetate ammonia solution adopts the distillation method, destroys the copper acetate ammonium complex salt with sulfuric acid, generates copper sulfate acetic acid, heats and distills the acetic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/79
Inventor 杨晓芳田维略瞿道兵
Owner GUIZHOU XINGHUA CHEM
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