提高锅炉热效率的途径 Themethodofimprovingthermalefficiencyofaboiler
一、 概述 General introduction提高锅炉热效率的基本方向Thebasicmethodofimprovingthermalefficiencyofaboiler
提高锅炉热效率有两个基本方向：
Thetwosidesofimprovingthethermalefficiency
1.提高燃烧效率，降低不完全燃烧热损失q3和a4
Lowering the heat loss due to unburned qand qto improve the bustion efficiency.链条炉的远大于q，因此，重点要抓a4的降低.
The efficiency of traveling grate is surpass qamoreso thefocus is cut q4 down.
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2.提高传热效率，降低排烟热损失和散热损失.
Lowering theheat lossdueto exhaustgastoimproving theefficiencyofheattransfer.
排烟热损失常为使锅炉热效率降低的另一主要因素，而一般散热损失较小.
Theothermainelementofreducing theboilerefficiencyistheheatlossduetoexhau
stgas but thenormal heatloss duetoradiation isless.
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二、提高锅炉燃烧效率 （以层燃炉为例）
Improvingboilerbustionefficiency(Layerburningfurnaceasanexample)
1.燃料燃烧的基本概念 The basic concept of fuel bustion
1）燃烧bustion:燃料中的可燃物质与空气中的氧在一定温度下发生剧烈的化学反应，发出光和热的现象.
Combustiblematerialinthefuelandoxygenintheairtoacertaintemperature theoccurrenceofviolentchemicalreactionsentthephenomenonoflightandheat.
2） 燃烧的三个条件 Threeconditionsforbustion:
有可燃物、空气、达到可燃物的着火的温度.
They arefuel 、air and fuel toreach the temperatureof thefire.25/6/3
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3）完全燃烧的条件 Combustion conditions:
（同时具备以下条件） (Atthesametimeareasthefollows)
燃烧温度，达到着火点并保持一定的温度，能连续燃烧直至燃尽；足够的空气量；良好的混合；充分的燃烧时间在不同的燃烧阶段将由其中的一个或两个要素起主要作用.
ure can continue toburn until theburning:enough air:well mixing andfull of burning time of which will be oneor two factorsplaya major role indifferent stagesofbustion.
