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Device and method of safely and accurately testing dust content of blast furnace gas

A technology of blast furnace gas and dust content, which is applied in the field of safe and accurate measurement of blast furnace gas dust content, can solve the problems of high cost of dust content, inaccurate measurement, and prone to safety accidents, etc., to achieve good sealing effect and ensure Safe operation, easy to diverge and concentrate the effect

Inactive Publication Date: 2019-07-16
BAOSHAN IRON & STEEL CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of high cost, inaccurate measurement, and prone to safety accidents in the safe measurement of blast furnace gas dust content in high-temperature and high-pressure gas pipe sections under the condition of dry gas dust removal, and to provide a safe and accurate measurement of blast furnace gas dust content. Apparatus and method for dust volume

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  • Device and method of safely and accurately testing dust content of blast furnace gas
  • Device and method of safely and accurately testing dust content of blast furnace gas
  • Device and method of safely and accurately testing dust content of blast furnace gas

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Embodiment Construction

[0034] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] combine figure 1 A device for safely and accurately measuring the dust content of blast furnace gas includes a second valve 10, a third valve 11, a first valve 12, a connecting flange 13, a sampling pipe 14, a sampling device 15, a gas main pipe 16, and a gas branch pipe. The gas main pipe 16 and the gas branch pipe are fixed through the connecting flange 13 to the sampling pipe 14; one end of the sampling pipe 14 is inserted vertically into the gas branch pipe and the main pipe, and the mouth of the sampling pipe is designed to be obliquely cut at an angle of 45°, and the sampling pipe is inserted into the center of the gas branch pipe to extract The most representative gas flowing in the middle of the pipeline; the first valve 12 is installed on the sampling pipe above the gas branch pipe, the first valve 12 is connec...

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Abstract

The invention discloses a device and a method of safely and accurately testing the dust content of a blast furnace gas. A sampling tube is a stainless steel pipe with a head obliquely cut at a 45 degree angle and is inserted to the middle of a tested gas pipeline, the oblique cut position is located at the center of the tested pipeline, and the data tested in a gas flow steady state are the most accurate; a sampling device is composed of an inlet ball valve, a check valve, a filter box, a pressure reducing valve, a flow meter, a bypass ball valve check valve and the like, is integrated in a stainless steel casing and is portable; in the case of testing, the pressure reducing valve keeps the gas pressure at the testing tool part high, no large pressure difference exists before and after thefilter paper, and the filter paper is ensured to completely absorb the dust in the gas without being damaged; a gas discharge port is placed downwind far away from a tester, thereby not causing gas poisoning of the tester; and the weight of the filter paper is measured by a precision analytical balance, the gas flow rate is also recorded, and the actual dust content in the blast furnace gas can be accurately and objectively reflected.

Description

technical field [0001] The invention relates to auxiliary equipment for blast furnace operation in metallurgical enterprises, more specifically to a device and method for safely and accurately measuring the dust content of blast furnace gas. Background technique [0002] Blast furnace gas is an important by-product of blast furnace ironmaking and serves as an inexpensive and efficient fuel for other processes in iron and steel complexes. The blast furnace gas rises from the top of the furnace and passes through the downcomer, and then enters the gravity dust collector. About 40% of the large particle dust in the crude gas remains in the gravity dust collector and is discharged through the dust discharge machine. The raw coal gas that has been initially treated enters the subsequent gas purification process equipment for processing. After being processed in the subsequent gas purification process equipment, it is required that the dust content of the treated clean gas should...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02
CPCG01N5/02
Inventor 俞樟勇季伟华王跃飞孙忠庆
Owner BAOSHAN IRON & STEEL CO LTD
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