基于抽气循环的双层滤料颗粒床高温除尘器数值模拟

肖贵慧; 杨国华; 姚志伟; 万博臣; 徐青涛; 兰明勇

doi:10.12030/j.cjee.201712034

环境工程学报

基于抽气循环的双层滤料颗粒床高温除尘器数值模拟

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肖贵慧, 杨国华, 姚志伟, 万博臣, 徐青涛, 兰明勇. 基于抽气循环的双层滤料颗粒床高温除尘器数值模拟[J]. 环境工程学报, 2018, 12(6): 1713-1719. doi: 10.12030/j.cjee.201712034

引用本文:

XIAO Guihui, YANG Guohua, YAO Zhiwei, WAN Bochen, XU Qingtao, LAN Mingyong. Numerical simulation of high temperature dual-layer granular bed filter based on pumping circulation[J]. Chinese Journal of Environmental Engineering, 2018, 12(6): 1713-1719. doi: 10.12030/j.cjee.201712034

Citation:

XIAO Guihui, YANG Guohua, YAO Zhiwei, WAN Bochen, XU Qingtao, LAN Mingyong. Numerical simulation of high temperature dual-layer granular bed filter based on pumping circulation[J]. Chinese Journal of Environmental Engineering, 2018, 12(6): 1713-1719. doi: 10.12030/j.cjee.201712034

基于抽气循环的双层滤料颗粒床高温除尘器数值模拟

1.
宁波大学海运学院，宁波 315211
2.
大庆油建公司，大庆 163318
基金项目:

Numerical simulation of high temperature dual-layer granular bed filter based on pumping circulation

1.
Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
2.
Daqing Oilfield Construction Company, Daqing 163318, China
Fund Project:

摘要: 为解决双层滤料颗粒床高温除尘器床层粉尘进入率过高的问题，在沉降室底部，采用抽气循环抽出部分气体再引入除尘器入口进行循环以降低床层粉尘进入率。运用Fluent软件中的离散相模型（DPM）对除尘器的气固两相流场进行数值模拟。结果表明：抽气循环可以显著降低床层粉尘进入率，当循环率为1/7时，床层粉尘整体进入率从无循环的20.73%降低到5.13%，特别是第6床层粉尘进入率从10.21%降低到2.35%。因此，抽气循环可以有效降低床层粉尘进入率。
- 双层滤料颗粒床 /
- 抽气循环 /
- DPM /
- 两相流
Abstract: To overcome the problem of high dust entry rate of high temperature dual-layer granular bed filter, a part of gas is pumped from the bottom of the settling chamber by the pumping circulation system and then lead the gas into the inlet of the filter to reduce the bed dust entry rate. In this paper, the discrete phase model (DPM) in Fluent software is used to simulate the gas-solid flow field in the filter. The results show that the pumping circulation can significantly reduce the bed dust entry rate.The whole bed dust entry rate decreases to 5.13% from 20.73% without circulation, especially the sixth bed layer dust entry rate decreases from 10.21% to 2.35%. Therefore, the pumping circulation can effectively reduce the bed dust entry rate.
- dual-layer granular bed /
- pumping circulation /
- DPM /
- two-phase flow

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基于抽气循环的双层滤料颗粒床高温除尘器数值模拟

1. 宁波大学海运学院，宁波 315211
2. 大庆油建公司，大庆 163318

基金项目:

关键词:

摘要: 为解决双层滤料颗粒床高温除尘器床层粉尘进入率过高的问题，在沉降室底部，采用抽气循环抽出部分气体再引入除尘器入口进行循环以降低床层粉尘进入率。运用Fluent软件中的离散相模型（DPM）对除尘器的气固两相流场进行数值模拟。结果表明：抽气循环可以显著降低床层粉尘进入率，当循环率为1/7时，床层粉尘整体进入率从无循环的20.73%降低到5.13%，特别是第6床层粉尘进入率从10.21%降低到2.35%。因此，抽气循环可以有效降低床层粉尘进入率。

English Abstract

Numerical simulation of high temperature dual-layer granular bed filter based on pumping circulation

1. Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
2. Daqing Oilfield Construction Company, Daqing 163318, China

Fund Project:

Keywords:

Abstract: To overcome the problem of high dust entry rate of high temperature dual-layer granular bed filter, a part of gas is pumped from the bottom of the settling chamber by the pumping circulation system and then lead the gas into the inlet of the filter to reduce the bed dust entry rate. In this paper, the discrete phase model (DPM) in Fluent software is used to simulate the gas-solid flow field in the filter. The results show that the pumping circulation can significantly reduce the bed dust entry rate.The whole bed dust entry rate decreases to 5.13% from 20.73% without circulation, especially the sixth bed layer dust entry rate decreases from 10.21% to 2.35%. Therefore, the pumping circulation can effectively reduce the bed dust entry rate.

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基于抽气循环的双层滤料颗粒床高温除尘器数值模拟

Numerical simulation of high temperature dual-layer granular bed filter based on pumping circulation

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基于抽气循环的双层滤料颗粒床高温除尘器数值模拟

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Numerical simulation of high temperature dual-layer granular bed filter based on pumping circulation

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