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A method for detecting the amount of carbon dioxide absorbed by ethanolamine

A technology of carbon dioxide and ethanolamine, which is used in chemical analysis by titration, etc., to achieve the effects of stable experimental results, large absorption capacity, and rich sources of sodium and alkali.

Active Publication Date: 2018-10-23
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0006] In order to reduce the test cost and detect the efficiency of carbon dioxide absorption by ethanolamine, and overcome the problem that the laboratory does not have a precise carbon dioxide detector and can realize the minimum error detection, the present invention proposes a multi-stage detection method for carbon dioxide absorption by ethanolamine

Method used

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  • A method for detecting the amount of carbon dioxide absorbed by ethanolamine
  • A method for detecting the amount of carbon dioxide absorbed by ethanolamine
  • A method for detecting the amount of carbon dioxide absorbed by ethanolamine

Examples

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Embodiment 1

[0042] Example 1: Use ethanolamine with a concentration of 10% to absorb carbon dioxide at temperatures of 30°C, 40°C, 50°C, and 60°C. This experiment uses two-stage detection, and the experimental implementation steps are as follows.

[0043] (1) combined with attached figure 1 , connect the experimental device according to the schematic diagram of the experimental device, and check whether the airtightness of the experimental device is good;

[0044] (2) Open the control valves of the nitrogen gas cylinder and the carbon dioxide gas cylinder, adjust the flow rates to 3.6L / min and 0.6L / min respectively, simulate a gas that is closer to the flue gas component in the laboratory, and ventilate for a period of time to eliminate the air in the experimental setup;

[0045] (3) Turn on the control switch of the water bath, adjust the temperature of the water bath to heat to the set temperature value;

[0046] (4) Add a certain volume of ethanolamine solution to the first three-nec...

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Abstract

The invention relates to a method used for detecting absorbing capacity of carbon dioxide absorbed from ethanolamine. The carbon dioxide is absorbed through multilevel sodium hydroxide until the last level titrated with calcium chloride finds no turbidity or sedimentation or extremely little turbidity, then sedimentation is conducted through superfluous calcium chloride solution, and finally weighing and calculation on obtained CaCO3 are conducted. The absorbing capacity of the carbon dioxide absorbed from the ethanolamine can be accurately and stably detected through the multilevel detection titration. The method to detect the absorbing capacity of the carbon dioxide absorbed from the ethanolamine in a laboratory through the multilevel sodium hydroxide has an obvious measurement effect, gravimetric analysis has little error and experimental result is stable and accurate.

Description

technical field [0001] The invention relates to the field of boiler flue gas carbon dioxide absorption and detection system, in particular to a method for detecting ethanolamine absorption efficiency by absorbing carbon dioxide not completely absorbed by ethanolamine by multi-stage sodium hydroxide. Background technique [0002] At present, in view of the harmfulness and utilization value of carbon dioxide gas, the detection of carbon dioxide emissions is particularly important. It is also very important to further explore effective detection theories and methods, and to develop detection equipment suitable for the current stage. Although with the rapid development of computer technology and microelectronics technology, carbon dioxide concentration detection is gradually becoming intelligent and integrated, but the core of detection is the comprehensive application of chemistry, physics, electricity and other disciplines. [0003] Commonly used methods for measuring carbon d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 刘乃瑞冯磊李炽瑞牛嘉嘉蔡晶
Owner NORTHWESTERN POLYTECHNICAL UNIV
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