（1）满足复杂化学条件环境下的防腐蚀要求：烟囱内化学环境复杂，烟气含酸量很高，在内衬表面形成的凝结物，对于大多数的建筑材料都具有很强的侵蚀性，所以对内衬材料要求具有抗强酸腐蚀能力；
(1) To meet the requirements of corrosion protection under complex chemical conditions: the chemical environment of the chimney is complex, the acid content of the flue gas is very high, the condensate formed on the lining surface is very corrosive to most building materials, so the lining material is required to have strong acid corrosion resistance;
（2）耐温要求：烟气温差变化大，湿法脱硫后的烟气温度在40℃~80℃之间，在脱硫系统检修或不运行而机组运行工况下，烟囱内烟气温度在130℃~150℃之间，那么要求内衬具有抗温差变化能力，在温度变化频繁的环境中不开裂并且耐久；
(2) Temperature tolerance requirements: flue gas temperature difference varies greatly, flue gas temperature after wet desulfurization is between 40 and 80 degrees centigrade, flue gas temperature in the chimney is between 130 and 150 degrees centigrade under the condition of maintenance or non-operation of desulfurization system and unit operation, so the lining is required to have the ability to resist temperature difference change, and not crack in the environment with frequent temperature change. And durable;
（3）耐磨性能好：烟气中含有大量的粉尘，同时在腐蚀性的介质作用下，磨损的实际情况可能会较为明显，所以要求防腐材料具有良好的耐磨性；
(3) Good wear resistance: there are a lot of dust in the flue gas, and under the action of corrosive medium, the actual wear situation may be more obvious, so anti-corrosion materials are required to have good wear resistance;