When the full stop of the absorption tower slurry spraying system occurs and under the condition that the accident cooling water system can meet the BMCR working condition, the temperature of the accident flue gas reduces to 80 ℃, so that the anticorrosion of the internal equipment and the clean flue of the absorption tower will not be damaged; when the flue gas at the inlet of FGD exceeds 180 ℃ and under the condition that the accident cooling water system can meet the BMCR working condition, the temperature of the accident flue gas decreases to meet the normal operation of the desulfurization system.
当发生吸收塔浆液喷淋系统全停时，事故降温水系统能够满足BMCR（锅炉最大连续蒸发量）工况下，事故烟气的温度降到80℃，使吸收塔内部设备和净烟道的防腐不发生损坏；FGD（烟气脱硫）入口烟气超过180℃时，事故降温水系统能够满足BMCR工况下，事故烟气的温度降到满足脱硫系统能正常运行。
The position of desuperheating water system for accidents shall be provided with a sufficient flue distance from the inlet of the absorption tower. In order to ensure the full heat transfer between the desuperheating water and the flue gas. Materials above the grade of 1.4529 shall be selected for the equipment of desuperheating water system for accident spray to ensure reliability and durability throughout the life cycle of FGD.
事故减温水系统的布置位置应使吸收塔入口有足够的烟道距离，以保证减温水与烟气间的充分换热。事故喷淋减温水系统设备材料应选用1.4529以上材质，确保在FGD全寿命周期内可靠耐久。
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