论文总字数：12587字

摘 要

烟气冷却器可以降低比电阻，提高除尘效率。有效节省生产成本，降低烟温。 提高锅炉的热效率。 天然气锅炉的排气温度通常为120-250℃，烟气中的敏感热量的7％至15％，并且11％的潜热不用于直接排放到大气中。高效率的冷凝气体,冷却器既能满足热水或供热水的需要，又能满足燃气锅炉的废气温度。 在40°C〜80°C的温度下冷却可显着提高锅炉效率。 该设计侧重于电站冷却器，在查阅了相关文献资料以及冷却器的相关资料的基础上，设计满足该工段余热利用要求的烟气冷却器。

关键词 冷却器 换热器 除尘器 省煤器

Design of Aftercooler for Flue Gas Dust Collector

in Power Plant

Abstract

The flue gas cooler reduces the specific resistance and improves the dust removal efficiency. Effectively save production costs and reduce smoke temperature. Improving the boiler's thermal efficiency. The exhaust gas temperature of the natural gas boiler is generally 120 ° C to 250 ° C, Flu was 7-15% of the sensitive heat and 11% of the hidden heat used directly to the atmosphere. This not only causes a large amount of energy waste but also exacerbates the thermal pollution of the environment. On the one hand, the Shangda high-efficiency flue gas condenser designed by us can not only meet the needs of processing domestic hot water or heating water, but also can exhaust gas temperature of gas boilers. Cooling to 40 °C ~ 80 °C makes the boiler's working efficiency significantly improved. This design aims at the cooler of the power plant. Based on the relevant literature and relevant data of the cooler, the flue gas cooler that meets the requirements for waste heat utilization in this section is designed. Including thermal balance calculation, calculation of total heat transfer coefficient, heat transfer area calculation, resistance calculation, strength check calculation; completed economizer structure design and automatic control design; completed drawing of related drawings. Including the system process flow chart and the economizer system layout, the total assembly drawing and the main parts drawing.

Keywords: Economizer cooler fin tube dust collector

目 录

摘 要---------------------------------------------------------------------------------------- I

ABSTRACT-------------------------------------------------------------------------------- II

目 录---------------------------------------------------------------------------------------- Ⅲ

第一章 火电厂工艺流程 ----------------------------------------------------------------- 4

第二章冷却器的工作原理和应用 -------------------------------------------- 5

第三章 计算说明书 ----------------------------------------------------------------------- 10

4.1工艺参数------------------------------------------------------------------10

4.2设计计算------------------------------------------------------------------10

第四章 经济分析----------------------------------------------------------------------- 18

第五章 结语----------------------------------------------------------------------- 19

参考文献----------------------------------------------------------------------- 20

致谢----------------------------------------------------------------------- 22

第一章 火电厂工艺流程

使用煤炭，石油或天然气作为燃料的能源工厂叫做火电厂、

1.热电厂分类
（1）按燃料分类
（2）由原动机分类
（3）通过能源供应进行分类
（4）按蒸汽压和温度分类
（5）按电源范围分类

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