Detection method and detection for chlorine content in blast furnace gas

A technology for blast furnace gas and a detection method, which is applied in the detection field, can solve the problems of cumbersome chlorine content detection method and can only detect gaseous chlorine content, etc., and achieves the effects of high detection result accuracy, simple structure and accurate result.

Inactive Publication Date: 2020-05-01
湖南华菱涟源钢铁有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for detecting chlorine content in blast furnace gas, aiming to solve the technical problem that the detection method for chlorine content in blast furnace gas is cumbersome and can only detect gaseous chlorine content in the prior art

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  • Detection method and detection for chlorine content in blast furnace gas
  • Detection method and detection for chlorine content in blast furnace gas
  • Detection method and detection for chlorine content in blast furnace gas

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] The invention provides a method for detecting chlorine content in blast furnace gas, comprising the following steps:

[0034] S1. Obtain a certain volume of blast furnace gas to be measured;

[0035] S2. Pass the blast furnace gas to be measured into the first reaction liquid and the second reaction liquid in sequence, make the blast furnace gas to be measured fully react with the first reaction liquid and then filter to obtain the filtrate; the second reaction liquid It is used to verify whether the chlorine in the blast furnace gas to be tested is completely absorbed by the first reaction liquid;

[0036] S3. ado...

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Abstract

The invention provides a detection method and a detection device for chlorine content in blast furnace gas. The detection method comprises the following steps of S1, acquiring the volume of to-be-detected blast furnace gas; S2, introducing the to-be-detected blast furnace gas into a first reaction solution and a second reaction solution in sequence, enabling the to-be-detected blast furnace gas tofully react with the first reaction solution, and filtering to obtain filtrate; and S3, detecting the mass of chloride ions in the filtrate by potentiometric titration, and calculating the chlorine content in the blast furnace gas, wherein the chlorine content is the concentration of chloride ions in unit volume of the blast furnace gas, and the calculation method is described as follows, in theformula, C is the chlorine content in the blast furnace gas, V is the volume of the to-be-detected blast furnace gas, and m is the mass of chlorine in the blast furnace gas with the volume V. By adopting multiple absorption, the chlorine in the blast furnace gas is completely absorbed, and hydrogen sulfide and carbon dioxide are completely converted into precipitates to eliminate interference on chlorine ion determination; the mass of chloride ions in the filtrate is measured by potentiometric titration, the operation is simple and rapid, and the result is accurate.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a method and a detection device for detecting chlorine content in blast furnace gas. Background technique [0002] Blast furnace gas contains chlorides such as hydrogen chloride and ammonium chloride, which affect the quality of subsequent steel rolling products and corrode gas pipelines. However, the existing on-line monitoring of chlorine content in coal gas can only measure the content of hydrogen chloride in the gas phase, and cannot detect other chlorides. In the prior art, the alkali absorption-ion selective electrode is used to measure the chlorine content in blast furnace gas, but this method is cumbersome. Ionized water is repeatedly washed until the blank potential reaches a specified value before use. There is no research report on the determination of chlorine content in blast furnace gas by absorption-potentiometric titration. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16
CPCG01N31/164
Inventor 乔蓉李昊斌李新家彭明耀
Owner 湖南华菱涟源钢铁有限公司
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