傳熱數(shù)學(xué)模型及應(yīng)用
(1. 中南大學(xué) 能源與動(dòng)力工程學(xué)院， 長(zhǎng)沙 410083；
2.韶關(guān)冶煉廠， 韶關(guān) 512024)
摘 要: 為了研究鉛塔冷凝器內(nèi)鋅蒸氣冷凝過程對(duì)冷凝器內(nèi)壁的傳熱情況，通過對(duì)鋅蒸氣冷凝過程傳熱機(jī)理的分析、推導(dǎo)，得出了鉛塔冷凝器內(nèi)鋅蒸氣冷凝過程傳熱數(shù)學(xué)模型。由該模型可知，鋅蒸氣冷凝過程的傳熱量主要決定于冷凝器內(nèi)鋅蒸氣的溫度和冷凝器內(nèi)壁溫度，要提高鋅蒸氣冷凝過程的傳熱量，可以通過降低冷凝器內(nèi)壁溫度來達(dá)到目的， 但其溫度值的優(yōu)化值為800℃左右。韶關(guān)冶煉廠鉛塔冷凝器實(shí)際運(yùn)行情況表明，該模型能較好地反映鉛塔冷凝器內(nèi)鋅蒸氣冷凝過程中向鉛塔冷凝器內(nèi)壁面的傳熱，這將對(duì)鉛鋅冷凝器的設(shè)計(jì)以及生產(chǎn)操作具有一定的指導(dǎo)意義。
關(guān)鍵字: 鉛塔； 冷凝器； 鋅蒸氣冷凝； 傳熱數(shù)學(xué)模型
condenser of lead column
ZHANG Quan1, CAI Jun-lin1,2
（1. School of Energy and Power Engineering,
Central South University, Changsha 410083, China;
2. Shaoguan Smelter, Shaoguan 512024, China）
Abstract:In order to study of the heat transfer from condensing zinc vapor to interior wall of the condenser of lead column, based on analysis and reasoning of the mechanism of heat transfer in the course of condensation of zinc vapor, a mathematical model of heat transfer on the condensation of zinc vapor in condenser of lead column is proposed. The model indicates that the quantity of heat transfer of condensation of zinc vapor has a very close relation with the temperature of zinc vapor condensation and interior wall of condenser, and the reducing of interior wall temperature in condenser can enhance the quantity of heat transfer of zinc vapor condensation, the optimum value range of interior wall temperature in condenser is about 800℃. The factual case of heat transfer of zinc vapor condensation in condenser of lead column in Shaoguan Smelter indicates that the mathematical model can preferably reflect heat transfer from condensation of zinc vapor in condenser to the interior wall of condenser. Some significant results toward design and operation of condenser of a lead column are attained from the mathematical model.
Key words: lead column; condenser; zinc vapor condensation; mathematical model of heat transfer
