论文部分内容阅读
在炉顶对流段上部或地面设置空气预热器回收烟气余热。实践证明可以取得较明显的效果,一般可提高热效率10-15%。目前常用的空气预热器有管式和回转式两种。 1.在对流段顶部设置管式空气预热器我国有的炼厂已在炉顶增设管式空气预热器来提高炉子的热效率,效果比较显著,热效率可达87-89%。在发展管式空气预热器的同时,关键问题是要使预热器能保持长期运行,要解决烟气露点腐蚀和堵灰问题。五十年代我国炼油厂普遍建造的“双斜顶炉”均装设过管式空气预热器,
In the top of the convection section above or on the ground to set up air preheater waste heat recovery flue gas. Practice has proved that you can get more obvious results, generally can improve the thermal efficiency of 10-15%. Currently used air preheater tube and rotary two. 1. In the convection section to set the top of the tube air preheater Some refineries in our country have added tube air preheater to improve the thermal efficiency of the stove, the effect is more significant, the thermal efficiency of up to 87-89%. In the development of tubular air preheater at the same time, the key issue is to make the preheater can maintain long-term operation, to solve the problem of dew point corrosion and ash plugging. Fifties commonly built in China’s oil refinery “double inclined top furnace” are equipped with over-pipe air preheater,