STUDY ON THE HEAT TRANSFER PROCESS OF ASH AND SLAG IN SLAG COOLER OF LARGE-CAPACITY CFB BOILER

LIU Ping; ZHOU Tao Institute of Nuclear Thermal Power and Standardization

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STUDY ON THE HEAT TRANSFER PROCESS OF ASH AND SLAG IN SLAG COOLER OF LARGE-CAPACITY CFB BOILER

Thermal Power Generation Vol. 40, Issue 10, Pages: 13-16(2011)

更新时间：2025-09-28

- STUDY ON THE HEAT TRANSFER PROCESS OF ASH AND SLAG IN SLAG COOLER OF LARGE-CAPACITY CFB BOILER
- 作者机构：
  
  华北电力大学核热工与标准化所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.6
- Published：2011
- 稿件说明：
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LIU Ping, ZHOU Tao Institute of Nuclear Thermal Power and Standardization. STUDY ON THE HEAT TRANSFER PROCESS OF ASH AND SLAG IN SLAG COOLER OF LARGE-CAPACITY CFB BOILER[J]. Thermal Power Generation, 2011, 40(10): 13-16.
DOI：

LIU Ping, ZHOU Tao Institute of Nuclear Thermal Power and Standardization. STUDY ON THE HEAT TRANSFER PROCESS OF ASH AND SLAG IN SLAG COOLER OF LARGE-CAPACITY CFB BOILER[J]. Thermal Power Generation, 2011, 40(10): 13-16. DOI：

摘要

针对循环流化床锅炉滚筒冷渣器设计中灰渣的换热系数确定困难等问题

提出利用在计算流化床和浸没表面间的换热中运用乳化团数学模型对灰渣在冷渣器中的传热过程进行传热分析

并计算灰渣的换热系数

进而确定灰渣的各种换热方式所占的份额。计算表明

在灰渣换热过程中辐射换热占32%

导热与对流换热占68%。乳化团的换热量约为气泡辐射传热的7.7倍。

Abstract

Directing against the problems existing in design method of the drum type slag cooler

e.i.the heat exchange coefficient of ash and slag is difficult to determine etc.

a method of using mathematical meodel of emulsified radical in calculation of heat exchange between the fluidized bed and the submerged surface has been put forward

and the heat transfer process of ash and slag in the slag cooler being analysed

and the heat exchange coefficient of ash and slag being calculated

and the share of various heat exchange mode being further determined.The results of calculation can be used as the basis of slag cooler design.

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