Dissolved oxygen (DO) testing device and DO testing method

A technique of measuring device and measuring method, which is applied in the field of chemical measurement, and achieves the effect of easy implementation and small measurement error

Active Publication Date: 2015-02-04
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the existing measuring instruments and methods are difficult to meet the determination of high pressure and high concentration dissolved oxygen, a simple, safe and practical measuring device and method is needed to measure it to ensure the smooth progress of the research

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  • Dissolved oxygen (DO) testing device and DO testing method
  • Dissolved oxygen (DO) testing device and DO testing method
  • Dissolved oxygen (DO) testing device and DO testing method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] The principle and method of the present invention are to carry out pressure-holding sampling, dilution and decompression treatment on the high-pressure and high-concentration dissolved oxygen solution, and then use a dissolved oxygen meter to directly measure the dissolved oxygen concentration of the diluted solution under normal pressure, and finally calculate the original high concentration The dissolved oxygen concentration of an oxygenated solution. The technical solution of the present invention is, a dissolved oxygen measuring device, such as figure 1 As shown, it includes the interface 3, the first shut-off valve 5, the dilution tank 6 and the hand pump 10 in sequence; among them, the interface 3 is used to connect the interface of the high-concentration dissolved oxygen fluid device 1 during measurement, and is used to connect the liquid ...

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Abstract

The invention discloses a testing device capable of accurately measuring dissolved oxygen (DO) with high concentration. The device sequentially comprises a connector, a first stop valve, a thinning tank and a hand pump. The invention also discloses a DO testing method utilizing the DO testing device. The method comprises the steps of after treatment of sampling under the condition of maintaining pressure, diluting, reducing pressure and the like, directly testing the concentration of DO under normal pressure by a DO instrument, and calculating the content of original high-concentration DO liquid by back calculation according to the testing result. The effective testing method is provided for the liquid having high-pressure and high-concentration DO, so that the defect that high DO concentration can not be measured by an existing method is overcome; the method is small in measurement error and easy to implement, is simple and feasible, and can be used for guiding the implementation of production, monitoring and testing.

Description

technical field [0001] The invention belongs to the technical field of chemical measurement, and in particular relates to a dissolved oxygen measuring device and a measuring method. Background technique [0002] In the process of industrial production, testing or environmental monitoring, it is usually necessary to measure the dissolved oxygen parameters in the fluid. Generally, when the pressure is low and the amount of dissolved oxygen is small, the amount of dissolved oxygen in the liquid can be directly measured within a certain range by using a dissolved oxygen meter or chemical method; , it is difficult to meet the range and pressure requirements with the above method. [0003] In the process of uranium mining by in-situ leaching, dissolved oxygen is usually used to oxidize uranium ore to promote the recovery of uranium. In order to study the relationship between the parameter change of uranium leaching process and the dissolved oxygen consumption, it is necessary to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N1/28
Inventor 王立民廖文胜姜岩原渊赵海军
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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