鋼鐵廠的高爐、焦?fàn)t和轉(zhuǎn)爐在煉鐵煉鋼過程中，會持續(xù)供應(yīng)地產(chǎn)生大量副產(chǎn)煤氣——高爐煤氣、焦?fàn)t煤氣和轉(zhuǎn)爐煤氣。這些煤氣在過去大多被直接放散或簡單燃燒，既浪費能源又污染環(huán)境。煤氣發(fā)電機(jī)組正是將這些“廢氣”變成“綠電”的核心裝備，堪稱鋼鐵廠的“廢氣煉金術(shù)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.

煤氣發(fā)電機(jī)組的核心技術(shù)在于低熱值煤氣的穩(wěn)定燃燒。高爐煤氣的熱值出色低（約3.5-4.5MJ/Nm?），CO含量高（20%-30%），且含有粉塵和硫化物，對燃燒設(shè)備和發(fā)電機(jī)組提出了嚴(yán)峻挑戰(zhàn)。首鋼工程公司研發(fā)的高參數(shù)小型化煤氣發(fā)電技術(shù)專為鋼鐵企業(yè)副產(chǎn)煤氣設(shè)計，可靈活適應(yīng)煤氣成分和熱值波動，并具備寬廣的負(fù)荷調(diào)節(jié)能力。該技術(shù)通過將主蒸汽參數(shù)提升至超高溫超高壓乃至亞臨界，配合中間一次再熱技術(shù)，顯著提高了朗肯循環(huán)熱效率，發(fā)電效率可達(dá)43%-45.6%。在環(huán)保方面，集成低氮燃燒技術(shù)后，純燒高爐煤氣工況下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?.

在實際工程中，煤氣發(fā)電機(jī)組正幫助鋼鐵企業(yè)實現(xiàn)“自我供電”。中南股份煤氣出色發(fā)電三期項目新建一臺135MW出色超臨界煤氣發(fā)電機(jī)組，以企業(yè)生產(chǎn)過程中富余的高爐煤氣、焦?fàn)t煤氣為燃料，年增發(fā)電量3.5億千瓦時。酒鋼集團(tuán)建設(shè)了1臺210t/h亞臨界煤氣鍋爐和1套60MW超高溫亞臨界煤氣發(fā)電機(jī)組。這些項目將化石燃料產(chǎn)生的熱量“吃干榨凈”，對于提升鋼鐵行業(yè)綜合能效、實現(xiàn)“雙碳”目標(biāo)具有重要推動作用。

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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