煤气发电机组如何将高炉煤气变成绿色电能

发布时间:2026-07-15 发布人:中拓 发布来源:https://www.zhongtuopower.cn/

钢铁厂的高炉、焦炉和转炉在炼铁炼钢过程中,会持续供应地产生大量副产煤气——高炉煤气、焦炉煤气和转炉煤气。这些煤气在过去大多被直接放散或简单燃烧,既浪费能源又污染环境。煤气发电机组正是将这些“废气”变成“绿电”的核心装备,堪称钢铁厂的“废气炼金术士”。

During the process of ironmaking and steelmaking, the blast furnaces, coke ovens, and converters in steel plants continuously produce a large amount of by-product gas - blast furnace gas, coke oven gas, and converter gas. These gases were mostly directly released or simply burned in the past, which not only wasted energy but also polluted the environment. The gas generator set is the core equipment that turns these "waste gases" into "green electricity", and can be called the "waste gas alchemist" of steel plants.

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煤气发电机组的核心技术在于低热值煤气的稳定燃烧。高炉煤气的热值出色低(约3.5-4.5MJ/Nm?),CO含量高(20%-30%),且含有粉尘和硫化物,对燃烧设备和发电机组提出了严峻挑战。首钢工程公司研发的高参数小型化煤气发电技术专为钢铁企业副产煤气设计,可灵活适应煤气成分和热值波动,并具备宽广的负荷调节能力。该技术通过将主蒸汽参数提升至超高温超高压乃至亚临界,配合中间一次再热技术,显著提高了朗肯循环热效率,发电效率可达43%-45.6%。在环保方面,集成低氮燃烧技术后,纯烧高炉煤气工况下NOx排放可低于50mg/Nm?。

The core technology of a gas generator set lies in the stable combustion of low calorific value gas. The calorific value of blast furnace gas is extremely low (about 3.5-4.5 MJ/Nm)? )The high CO content (20% -30%) and the presence of dust and sulfides pose serious challenges to combustion equipment and generator sets. The high parameter miniaturized gas power generation technology developed by Shougang Engineering Company is specifically designed for the by-product gas of steel enterprises, which can flexibly adapt to fluctuations in gas composition and calorific value, and has a wide range of load regulation capabilities. This technology significantly improves the thermal efficiency of the Rankine cycle by increasing the main steam parameters to ultra-high temperature, ultra-high pressure, and even subcritical, combined with intermediate reheating technology. The power generation efficiency can reach 43% -45.6%. In terms of environmental protection, after integrating low nitrogen combustion technology, NOx emissions under pure blast furnace gas conditions can be less than 50mg/Nm?.

在实际工程中,煤气发电机组正帮助钢铁企业实现“自我供电”。中南股份煤气出色发电三期项目新建一台135MW出色超临界煤气发电机组,以企业生产过程中富余的高炉煤气、焦炉煤气为燃料,年增发电量3.5亿千瓦时。酒钢集团建设了1台210t/h亚临界煤气锅炉和1套60MW超高温亚临界煤气发电机组。这些项目将化石燃料产生的热量“吃干榨净”,对于提升钢铁行业综合能效、实现“双碳”目标具有重要推动作用。

In practical projects, gas generator sets are helping iron and steel enterprises to realize "self power supply". A 135MW high-efficiency supercritical gas generator unit will be newly built for the third phase of Zhongnan Group's high-efficiency gas power generation project, using surplus blast furnace gas and coke oven gas from the enterprise's production process as fuel, with an annual increase in power generation of 350 million kilowatt hours. Jiugang Group has built one 210t/h subcritical gas boiler and one set of 60MW ultra-high temperature subcritical gas generator set. These projects will exhaust the heat generated by fossil fuels, which plays an important role in improving the comprehensive energy efficiency of the steel industry and achieving the "dual carbon" goals.

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