在鋼鐵冶煉的龐大流程中，轉(zhuǎn)爐煤氣、高爐煤氣這些“副產(chǎn)氣體”曾一度被視為難以高效利用的“雞肋”。傳統(tǒng)做法是通過(guò)鍋爐產(chǎn)蒸汽驅(qū)動(dòng)汽輪機(jī)發(fā)電，不僅轉(zhuǎn)換效率偏低，建設(shè)周期也長(zhǎng)達(dá)一年以上。而煤氣發(fā)電機(jī)組的崛起，正以直接燃燒、內(nèi)燃驅(qū)動(dòng)的方式，為鋼鐵企業(yè)打開了一扇“降碳又增收”的新大門。

In the vast process of steel smelting, "by-product gases" such as converter gas and blast furnace gas were once regarded as "chicken ribs" that were difficult to efficiently utilize. The traditional approach is to use a boiler to produce steam and drive a steam turbine to generate electricity, which not only has a low conversion efficiency but also has a construction period of over a year. The rise of gas-fired power generation units is opening a new door for steel enterprises to reduce carbon emissions and increase revenue through direct combustion and internal combustion drive.

一、使用范圍：聚焦鋼鐵與冶金行業(yè)

1、 Scope of use: Focusing on the steel and metallurgical industries

煤氣發(fā)電機(jī)組最核心的應(yīng)用場(chǎng)景集中在鋼鐵冶煉行業(yè)。煉鋼過(guò)程中產(chǎn)生的轉(zhuǎn)爐煤氣、高爐煤氣和焦?fàn)t煤氣，占到生產(chǎn)二次能源的一半以上，是行業(yè)節(jié)能降碳的主要目標(biāo)。這套機(jī)組專為中低熱值煤氣設(shè)計(jì)，能夠處理熱值在8000千焦/標(biāo)準(zhǔn)立方米左右的轉(zhuǎn)爐煤氣，以及含氫量不等的混合煤氣。

The core application scenarios of gas generators are concentrated in the steel smelting industry. The converter gas, blast furnace gas, and coke oven gas generated during the steelmaking process account for more than half of the production of secondary energy and are the main targets for energy conservation and carbon reduction in the industry. This unit is designed specifically for medium to low calorific value gas, capable of processing converter gas with a calorific value of around 8000 kilojoules per standard cubic meter, as well as mixed gas with varying hydrogen contents.

具體而言，它適用于從煉鐵高爐、煉鋼轉(zhuǎn)爐到軋鋼加熱爐等全流程的煤氣回收利用。機(jī)組單臺(tái)功率覆蓋500至2000千瓦，且支持幾十臺(tái)智能并聯(lián)運(yùn)行，可根據(jù)鋼廠實(shí)際煤氣產(chǎn)量靈活調(diào)整開機(jī)數(shù)量，實(shí)現(xiàn)“按需發(fā)電”。

Specifically, it is suitable for the full process of gas recovery and utilization from ironmaking blast furnaces, steelmaking converters to steel rolling heating furnaces. The single power of the unit covers 500 to 2000 kilowatts, and supports dozens of intelligent parallel operations. The number of units that can be flexibly adjusted according to the actual gas production of the steel plant can achieve "on-demand power generation".

二、核心優(yōu)勢(shì)：效率革命、快速部署與可觀回報(bào)

2、 Core advantages: Efficiency revolution, rapid deployment, and substantial returns

與傳統(tǒng)“鍋爐+汽輪機(jī)”方案相比，煤氣發(fā)電機(jī)組帶來(lái)了三個(gè)維度的變革。

Compared with the traditional "boiler+steam turbine" solution, gas-fired power generation units have brought about three dimensional changes.

發(fā)電效率顯著躍升：直接燃燒驅(qū)動(dòng)的內(nèi)燃機(jī)方案，發(fā)電效率可達(dá)35%至42%，比傳統(tǒng)蒸汽發(fā)電高出至少4個(gè)百分點(diǎn)；若配合余熱回收系統(tǒng)，綜合能源利用效率可提升至44%，較傳統(tǒng)方案提高近10個(gè)百分點(diǎn)。這意味著同等煤氣量下，能“擠出”更多電能。

The power generation efficiency has significantly increased: the direct combustion driven internal combustion engine scheme can achieve a power generation efficiency of 35% to 42%, which is at least 4 percentage points higher than traditional steam power generation; If combined with a waste heat recovery system, the comprehensive energy utilization efficiency can be increased to 44%, which is nearly 10 percentage points higher than traditional solutions. This means that under the same amount of gas, more electricity can be squeezed out.

建設(shè)周期大幅縮短：從項(xiàng)目設(shè)計(jì)到投產(chǎn)運(yùn)行，煤氣發(fā)電方案僅需4至6個(gè)月，比傳統(tǒng)技術(shù)減少60%的建設(shè)時(shí)間，資金回收期壓縮至1.5年。

The construction period has been significantly shortened: from project design to operation, the gas power generation scheme only takes 4 to 6 months, reducing the construction time by 60% compared to traditional technology, and compressing the capital recovery period to 1.5 years.

經(jīng)濟(jì)與環(huán)境雙重收益：以廣東某鋼廠的實(shí)踐為例，10臺(tái)1500千瓦機(jī)組穩(wěn)定運(yùn)行一年，回收電能達(dá)1.2億度，減少二氧化碳排放9.8萬(wàn)噸，直接創(chuàng)造經(jīng)濟(jì)效益5700多萬(wàn)元。煤氣回收利用率高達(dá)99%，近乎“吃干榨凈”。

Dual benefits of economy and environment: Taking the practice of a steel plant in Guangdong as an example, 10 1500 kW units operated stably for one year, recovered 120 million kWh of electricity, reduced carbon dioxide emissions by 98000 tons, and directly created economic benefits of over 57 million yuan. The gas recovery and utilization rate is as high as 99%, almost completely exhausted.