Oxidized wind machinery room ventilating system and method thereof

Abstract

The invention provides a ventilation system used in the oxidation wind machine room, which includes at least an oxidation wind machine having an oxidation wind machine suction opening and an oxidation wind machine air exit, wherein the ventilation system includes a forced input system for supply wind to the oxidation wind machine suction opening through a supply air duct. The invention further provides a ventilation method adopted in the oxidation wind machine room, wherein the oxidation wind machine room has at least an oxidation wind machine with an oxidation wind machine suction opening and an oxidation wind machine air exit. The ventilation method is provided with a forced input system which supplies air to the oxidation wind machine suction opening through the supply air duct. The invention is characterized in that, the deficiency in draught of the oxidation wind machine in winter is avoided, which ensures the air quantity required in the normal running of the oxidation wind machine through a forced input system of the screw type ventilator.

Description

Technical field: [0001] The invention relates to the technical field of ventilation applied to the oxidation fan room of a flue gas desulfurization island in a thermal power plant in a cold region, and more particularly relates to a ventilation system and method for an oxidation fan room. Background technique: [0002] One of the important equipment in the flue gas desulfurization island of thermal power plants is the oxidation fan, which provides oxidation air for the desulfurization system to ensure that the sulfite ions in the absorption tower are oxidized to sulfate ions to complete the SO 2 the absorption process. [0003] If the oxygen supply of the oxidation fan is insufficient, it will lead to the following consequences: [0004] 1. The content of calcium sulfite in the slurry of the absorption tower increases, and the inside of the absorption tower is prone to fouling; [0005] 2. The increase of calcium sulfite in the slurry will reduce the SO in the flue gas 2 ...

AI Technical Summary

Problems solved by technology

[0004] 1. The content of calcium sulfite in the slurry of the absorption tower increases, and the inside of the absorption tower is prone to fouling;

[0005] 2. The increase of calcium sulfite in the slurry will reduce the SO in the flue gas 2 adsorption capacity, leading to a decrease in desulfurization efficiency;

[0006] 3. The increase of calcium sulfite content in the slurry will affect the gypsum dehydration system, resulting in difficulty in dehydration, resulting in a decline in the quality of gypsum, which cannot meet the commercial quality requirements

Because in cold regions, the ventilation system stops operating in winter and the intake louvers are closed, which leads to insufficient air intake of the oxidation fan

The air intake of the oxidation fan is usually 8000m 3 / h, the doors and windows of the oxidation fan room are closed in winter, and the air volume penetrating through the gaps of the doors and windows cannot guarantee the air intake of the oxidation fan when it is working normally, resulting in a decrease in the output of the oxidation fan, which leads to insufficient oxygen supply to the absorption tower of the desulfurization system

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