煤电升级改造背景下烟气余热利用节能效益对比评估
摘要：对火电企业进行节能减排改造，能够降低火电供电煤耗，进而有效减少二氧化碳排放量的增长，对实现碳达峰、碳中和目标具有重要意义。以某630 MW机组为例，对比4种余热利用方案(低温省煤器方案、二级低温省煤器方案、旁路烟道方案和机炉耦合方案)的系统机组，进行了关键技术参数与节电效果比较分析，结果表明：排烟温度降为90 ℃，供电煤耗率低温省煤器方案降低1.88 g/(kW⋅h)，二级低温省煤器方案降低2.16 g/(kW⋅h)，旁路烟道方案降低2.29 g/(kW⋅h)，而机炉耦合方案降低2.66 g/(kW⋅h)，节能效果最为显著。
Abstract:The energy saving and emission reduction transformation of thermal power enterprises can reduce the coal consumption of thermal power supply, and then effectively reduce the growth of carbon dioxide emissions, which is of great significance to achieve the goal of carbon peak and carbon neutralization. Taking a 630 MW unit as an example, the system units of four waste heat utilization schemes (low-temperature economizer scheme, secondary low-temperature economizer scheme, bypass flue scheme and turbine boiler coupling scheme) were compared, and the key technical parameters and power saving effect were compared and analyzed. Moreover, a reference for the upgrading and technical transformation of energy conservation and emission reduction in China’s power industry was put forward. The results show that the exhaust gas temperature is reduced to 90 ℃, The coal consumption rate of power supply is reduced by 1.88 g/(kW⋅h) in the low-temperature economizer scheme, 2.16 g/(kW⋅h) in the secondary low-temperature economizer scheme, 2.29 g/(kW⋅h) in the bypass flue scheme, and 2.66 g/(kW⋅h) in the turbine boiler coupling scheme.
标题：煤电升级改造背景下烟气余热利用节能效益对比评估
title:Comparative Evaluation of Energy-Saving Benefits of Flue Gas Waste Heat Utilization Under the Background of Coal Power Upgrading
作者：王华霆, 陈衡, 徐钢, 安吉振
authors:Huating WANG, Heng CHEN, Gang XU, Jizhen AN
关键词：煤电,节能减排,余热利用,低温省煤器,
keywords:coal-fired electricity,conserve energy reduce emissions,waste heat utilization,low temperature economizer,
发表日期：2024-02-29
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