1、 Relevant technologies for the application of coke oven gas power generation

焦爐煤氣是在隔絕空氣條件下高溫焦化制取焦炭的副產(chǎn)品。每噸川得煤氣300-350m3， 中國鋼鐵工業(yè)的快速發(fā)展加大了對焦炭的需求。國內(nèi)鋼鐵工業(yè)直保持快速增長的態(tài)勢，粗鋼產(chǎn)量平均以每年7.59%的速度上升。鋼鐵行業(yè)的高速增長，直接結果就是焦炭需求持續(xù)大幅度增加，煤礦及鋼鐵行業(yè)副產(chǎn)煤氣(焦爐

Coke oven gas is a byproduct of high-temperature coking to produce coke under isolated air conditions. The rapid development of China's steel industry has increased the demand for coke by 300-350m3 per ton of Chuande gas. The domestic steel industry has maintained a rapid growth trend, with crude steel production increasing at an average annual rate of 7.59%. The rapid growth of the steel industry has directly resulted in a sustained and significant increase in demand for coke, as well as the by-product gas (coke oven) in the coal and steel industries

煤氣、高爐煤氣、轉爐煤氣)回收利用潛力很大。合理、、無污染地利用焦爐煤氣發(fā)電和供熱，能達到節(jié)能、增效和環(huán)保的多重效果，是焦化廠多余焦化煤氣的利用方式。

There is great potential for the recycling and utilization of gas, blast furnace gas, and converter gas. The rational, efficient, and pollution-free use of coke oven gas for power generation and heating can achieve multiple effects of energy conservation, efficiency enhancement, and environmental protection. It is the best way to utilize excess coke oven gas in coking plants.

1、燃氣發(fā)電技術應用形式

1. Application forms of gas power generation technology

●利用燃氣內(nèi)燃機發(fā)電機組發(fā)電。主要應用在單機功率3000kW以下的中小型發(fā)電設備，其優(yōu)點是:

Utilize gas internal combustion engine generator sets to generate electricity. Mainly used in small and medium-sized power generation equipment with a single machine power below 3000kW, its advantages are:

①發(fā)電效率高。通常在32-40%，若增加熱電冷聯(lián)供系統(tǒng)，熱電效率可達80%以上。

① High power generation efficiency. Usually between 32% and 40%, if a cogeneration system is added, the thermoelectric efficiency can reach over 80%.

②造價相對較低。由于內(nèi)燃機技術成熟，零件的精密度要求相對較低，單位千瓦造價低于燃氣輪機。

② The cost is relatively low. Due to the mature technology of internal combustion engines, the precision requirements for parts are relatively low, and the cost per kilowatt is lower than that of gas turbines.

③使用場合靈活。根據(jù)不同場合用戶的需要，可方便的并機或并網(wǎng)，構成總輸出功率達上萬千瓦的電站或

③ Flexible usage scenarios. According to the needs of users in different occasions, it can be conveniently connected or connected to the grid, forming a power station with a total output power of tens of thousands of kilowatts

熱電冷聯(lián)供機組。機組群還可根據(jù)實際負載的需要，靈活方便地調(diào)節(jié)發(fā)電輸出。

A cogeneration unit of heat, electricity, and cooling. The unit group can also flexibly and conveniently adjust the power generation output according to the actual load needs.

④可以使用多種低熱值燃氣，應用范圍廣。

④ Multiple types of low calorific value gas can be used, with a wide range of applications.

⑤調(diào)峰性能更好，啟停方便快捷。

⑤ Peak shaving performance is the best, with convenient and fast start and stop.

⑥維修簡單，安裝方便。設備體積小，重量輕，大修周期長、維修簡單。缺點主要是單機功率較小，不能適用于大規(guī)模的發(fā)電的需要。

⑥ Easy maintenance and easy installation. The equipment has small size, light weight, long overhaul cycle, and simple maintenance. The main drawback is that the single machine power is small and cannot be suitable for large-scale power generation needs.

總之，燃氣內(nèi)燃機發(fā)電技術成熟，工藝穩(wěn)定，投資小，見效快，運行維護相對簡單，適用于多種行業(yè)。

In short, the gas internal combustion engine power generation technology is mature, the process is stable, the investment is small, the efficiency is fast, the operation and maintenance are relatively simple, and it is suitable for various industries.

2、焦爐煤氣發(fā)電對燃氣發(fā)電機組的特殊技術要求

2. Special technical requirements for gas generator sets for coke oven gas power generation

焦爐煤氣組分中含氫氣47-60% (體積)、甲烷23-27%、-氧化碳6-8%等。焦爐煤氣的發(fā)熱值約為

The composition of coke oven gas contains 47% -60% hydrogen (volume), 23% -27% methane, and 6% -8% carbon oxide. The heating value of coke oven gas is approximately

15-16.8MJ/Nm3，可用來發(fā)電。但一般的燃氣機一 天然 氣或煤層氣發(fā)動機不能直接用于焦爐煤氣,燃氣機

15-16.8MJ/Nm3, can be used for power generation. But ordinary gas engines such as natural gas or coalbed methane engines cannot be directly used for coke oven gas

必須進行適用焦爐煤氣特性的改造，解決焦爐煤氣含氫比例高、爆炸極限范圍寬(4.1-74.2%)， 其氣體組份和濃度動態(tài)變化大，混合氣的空燃比動態(tài)變化大，燃燒速度快而帶來的屐轉速和輸出功率不穩(wěn)定，波動大問題。

It is necessary to carry out modifications that are suitable for the characteristics of coke oven gas, in order to solve the problems of high hydrogen content and wide explosion limit range (4.1-74.2%) of coke oven gas, large dynamic changes in gas composition and concentration, large dynamic changes in air fuel ratio of mixed gas, and unstable and fluctuating speed and output power caused by fast combustion speed.

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