Converter primary flue gas dry dedusting system

Abstract

The invention relates to a converter primary flue gas (coal gas) dry dedusting system. A vanadium extraction converter primary flue gas dry dedusting system is characterized in that the system comprises an evaporation cooling tower, a first flue gas pipeline, a high-temperature cloth-bag deduster, a venturi tube flowmeter, a second flue gas pipeline, an induced draft fan, a third flue gas pipeline, a silencer, a fourth flue gas pipeline, a flue gas component analyzer, a cup valve switching station, and a dispersing chimney; high-temperature flue gas generated at the converter mouth is cooled through a vaporization cooling flue and enters the evaporation cooling tower; a flue gas outlet of the evaporation cooling tower is communicated with a flue gas inlet of the high-temperature cloth-bag deduster through the first flue gas pipeline; a flue gas outlet of the high-temperature cloth-bag deduster is equipped with the venturi tube flowmeter; an output port of the induced draft fan is connected with an input port of the silencer through the third flue gas pipeline; a dispersing side cup valve of the cup valve switching station is connected with the dispersing chimney through a dispersing pipe. The system runs safely, and allows the dust content of the discharged flue gas to be not more than 15 mg / Nm3.

Description

technical field [0001] The invention relates to a converter primary flue gas (coal gas) dry dust removal system. Background technique [0002] The main advantages of the converter gas (flue gas) dry dedusting process are as follows: First, the dust removal and purification efficiency is high, and the dust mass concentration is reduced to 15mg / Nm 3 The following; secondly, the system adopts dry treatment without secondary pollution and sewage treatment; thirdly, the system has small resistance loss, high calorific value of gas, and the recovered dust can be directly used, which reduces energy consumption; fourthly, the system is simplified, accounting for Small area, easy to manage and maintain. [0003] However, because the conventional converter gas dry dust removal process uses an electrostatic precipitator, due to the particularity of the converter flue gas, it will inevitably cause an explosion. Although the conventional dry process has taken many measures to ensure th...

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Problems solved by technology

[0003] However, due to the use of electrostatic precipitators in the conventional converter gas dry dedusting process, due to the particularity of the converter flue gas properties, it will inevitably cause explosions.

Although the conventional dry process has taken many measures to ensure the safety of the system, explosion venting will still occur, which will have a considerable impact on converter smelting and recovered gas

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