Drainage device of converter gas analyzer

Abstract

The invention discloses a drainage device of a converter gas analyzer, belonging to the technical field of a converter gas analyzer in the metallurgical industry. The drainage device comprises a steam-water separator and a sample gas filter, wherein a gas inlet of the steam-water separator is communicated with a sample gas inlet with a valve through a pipeline; a water outlet of the steam-water separator is connected with a separator drainage pipeline with a drainage valve; a gas outlet of the steam-water separator is communicated with an inlet of the sample gas filter through a vent pipeline; a vent valve communicated with the atmosphere is arranged on the vent pipeline; and the bottom of the sample gas filter is communicated with a water inlet end of the drainage valve on the separator drainage pipeline through a filter drainage pipeline. The drainage device disclosed by the invention is simple and compact in structure and does not generate pressure difference and consequent failure of drainage during drainage; and moreover, the drainage device realizes efficient and sufficient drainage, does not need artificial drainage and is favorable for saving the production cost.

Description

technical field [0001] The invention relates to the technical field of converter gas analyzers in the metallurgical industry. Background technique [0002] The transformation of the iron and steel industry from energy conservation and cleanliness to a circular economy model is the inevitable result of the rapid development of the iron and steel industry in recent years. The realization of negative energy steelmaking in converter production has the advantages of reducing costs and realizing energy recycling. Recycling converter gas realizes negative energy steelmaking It has been widely used in converter steelmaking plants at home and abroad. [0003] The gas analyzer mainly detects CO and O in converter gas 2 According to the analysis results of the analyzer, it is decided whether to recover or disperse the gas. The gas analyzer takes samples from the converter gas pipeline for analysis through the sampling pipeline. The dust content in the converter gas is large, and the ...

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Problems solved by technology

The gas analyzer takes samples from the converter gas pipeline for analysis through the sampling pipeline. The dust content in the converter gas is large, and the OG wet dust removal and converter fan impeller are used for high-speed washing. The water content is high, and some water vapor will enter the pipeline and be mixed in the converter gas. After the water vapor enters the gas analyzer with the converter gas, the oxygen content in the sample gas will increase, which may cause explosion hazards, and cause irreversible damage to the analyzer, and damage the sampling pump at the same time, and the converter gas cannot be detected due to the humidity alarm of the analyzer. normal recycling

[0004] However, in actual production, the drainage effect of the drainage device inside the converter gas analyzer adopted by our company is not good, such as figure 1 As shown, the drainage device includes a steam-water separator 6 and a drain valve 8, the gas inlet of the steam-water separator 6 communicates with the sample gas inlet pipeline 3, the outlet communicates with the inlet of the sample gas filter 10, and the gas passes through the sample gas inlet pipeline 3 into the steam-water separator 6, where the water vapor in the sample gas is cooled, but part of the water vapor will also enter the sample gas filter 10, and the steam-water separator 6 in this drainage device is located in the sample gas inlet pipeline when draining. The valves 2 on 3 are all closed, and only the drain valve 8 is opened. At this time, the interior of the steam-water separator 6 is almost a closed space. The filter material, the air circulation is poor, resulting in the formation of negative pressure inside the steam-water separator 6, resulting in the slow drainage speed of the drainage pipeline 7 of the steam-water separator 6, the water is discharged in a ticking form, and the drainage is incomplete due to the existence of negative pressure , there is water accumulation, it is easy to cause water vapor to enter the gas analyzer host 11 and damage it; and part of the water vapor will also enter the sample gas filter 10 connected with the steam-water separator 6, resulting in water accumulation, and the sample gas filter 10 does not drain device, resulting in the inability to drain water by itself, water vapor enters the gas analyzer host 11 with the air flow, causing damage to the instrument and the sampling pump, and the converter gas cannot be recovered normally due to the humidity alarm of the analyzer

Especially in winter, the water vapor will increase, requiring frequent manual drainage or instrument maintenance, affecting the continuity and efficiency of work, resulting in waste of labor and increased costs, and frequent humidity alarms from the analyzer greatly affect the converter. The recovery of gas has caused great losses to the company

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