| 天然气烟气冷凝式余热利用技术 |
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| 引用本文： | 刘长征,沈胜强. 天然气烟气冷凝式余热利用技术[J]. 节能, 2012, 31(4): 7-10 |
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| 作者姓名： | 刘长征 沈胜强 |
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| 作者单位： | 1. 大连理工大学能源与动力学院,辽宁大连116024;大连测控技术研究所,辽宁大连116013
2. 大连理工大学能源与动力学院,辽宁大连,116024 |
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| 摘 要： | 介绍天然气冷凝式余热回收原理,分析天然气燃烧产物的组成,对排烟热损失、节能量、冷凝率进行了计算和分析。结果显示,烟气中可回收的蒸气潜热达到烟气低位热值的11.2%。排烟热损失随排烟温度的升高而增加,当排烟温度低于露点温度时,排烟热损失随排烟温度的升高急剧增加,水蒸气冷凝率随排烟温度的升高而降低。此外,对这种方法降低烟气中NOX排放的环保特性也进行了探讨。
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| 关 键 词： | 天然气 余热回收 节能 环保 |
Residual-heat utilization by vapor condensation in natural gas burning process |
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| LIU Chang-zheng,SHEN Sheng-qiang. Residual-heat utilization by vapor condensation in natural gas burning process[J]. Energy Conservation, 2012, 31(4): 7-10 |
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| Authors: | LIU Chang-zheng SHEN Sheng-qiang |
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| Affiliation: | (School of Energy and Power Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | Principle of residual-heat utilization by vapor condensation in natural gas burning process is introduced in this paper.Ingredient of natural gas combustion products is analyzed.Heat losses due to exhaust gas,amount of energy conservation and condensation rate are calculated.The results indicate that recoverable latent heat of vapor in the gas combustion products accounts for 11.2% of the low calorific value.Exhaust losses increase with the increasing of exhaust gas temperature,and when the exhaust gas temperature is below the dew point,the trend is drastic.Moreover,the vapor condensation rate decreases with the exhaust temperature rise.Characteristic of environmental protection in reducing NOX emission is also presented. |
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| Keywords: | natural gas residual-heat utilization energy conservation environmental protection |
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