南三油库锅炉尾部烟气余热回收利用应用研究

发布时间：2018-01-16 03:20

本文关键词：南三油库锅炉尾部烟气余热回收利用应用研究　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：能源作为有限资源为人类的发展消耗的越来越多,伴随着空气环境也越来越差,特别是在我国北方的重工业和石油石化行业中,大量的废弃物排放给环境带来重大污染,因此我们要“节能减排”,实现能源的节约,同时减少环境的污染。本论文以南三油库4台35吨锅炉尾部烟气温度和成份与水系统中回水温度和流量作为主要研究对象,制定出换热器在水侧进行并联连接,在烟气侧进行串联连接的方案。研究了热管换热器与波面板换热器这两种烟气余热回收利用设备装置,对比分析出这两种换热器装置的优点与缺点,选择出换热效率高,不易结垢,阻力小,设备紧凑的波面板换热器作为南三油库锅炉尾部烟气余热回收利用设备装置。根据余烟与回水的各项物理参数计算出波面板换热器具体的结构尺寸,对所设计的一、二级波面板换热器使用Fluent进行三维数值模拟,得出波面板换热器烟气侧温度、速度和静压分布的状况,波面板换热器水侧温度、速度和静压分布的状况。同时,通过改变波面板换热器的入口流速进行模拟,来考虑不同变量下,波面板换热器的换热效果。
[Abstract]:Energy, as a limited resource, is consuming more and more for the development of human being, and the air environment is getting worse and worse, especially in the heavy industry and petroleum and petrochemical industry in the north of our country. A large amount of waste emissions bring great pollution to the environment, so we should "save energy and reduce emissions" to achieve energy conservation. At the same time to reduce the environmental pollution. The temperature and composition of flue gas and backwater temperature and flow rate in the backwater system of 4 35 ton boilers in the south of three oil depots are the main research objects in this paper. The scheme of heat exchanger connected in parallel on water side and connected in series on flue gas side was worked out. The heat pipe heat exchanger and wave-plate heat exchanger were studied for flue gas waste heat recovery and utilization equipment. The advantages and disadvantages of the two heat exchangers are compared and analyzed. The heat transfer efficiency is high, the scaling is not easy and the resistance is small. The compact wave-plate heat exchanger is used as the equipment for the recovery and utilization of the waste heat from the tail gas of the boiler in the South third Oil Depot. The specific structural dimensions of the wave-plate heat exchanger are calculated according to the physical parameters of the residual smoke and backwater. Three-dimensional numerical simulation of the first and second order wave-plate heat exchanger was carried out by Fluent. The temperature, velocity and static pressure distribution of the flue gas side of the wave-plate heat exchanger and the water side temperature of the wave-panel heat exchanger were obtained. At the same time, by changing the inlet velocity of the wave-plate heat exchanger, the heat transfer effect of the wave-panel heat exchanger is considered under different variables.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X74;TE09

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