Due to the widespread use of efficient flue gas waste heat recovery technology in coke ovens, approximately 50% to 55% of coke oven gas is surplus. Many coking enterprises in China use the remaining coke oven gas for power generation. There are three ways to generate electricity from coke oven gas, namely steam power (cogeneration), gas turbine power, and internal combustion engine power. Currently, these power generation methods are widely used in China and have mature technology. If the coking enterprise matches high power consumption production or collaborates with power generation and supply enterprises, and the grid electricity price is appropriate, the use of coke oven gas for power generation can be one of the preferred technological options. It is easy to operate and manage, has a long production workshop, and can adopt various methods, resulting in stable enterprise profits.

蒸汽发电，热电联产供热与发电兼用

Steam power generation, cogeneration for both heating and power generation

蒸汽发电由锅炉-凝气式气轮机-发电机组成。该工艺以焦炉煤气作为热源燃烧锅炉，生成高压蒸汽，用以带动汽轮机发电机而发电。蒸汽发电技术过关成熟可靠。在我国焦化行业应用较广泛，但其系统复杂占地面积大启动时间长。

Steam power generation consists of a boiler, a condensing gas turbine, and a generator. This process uses coke oven gas as a heat source to burn the boiler, generating high-pressure steam to drive the steam turbine generator and generate electricity. The steam power generation technology is mature and reliable. It is widely used in the coking industry in China, but its system is complex, covers a large area, and takes a long start-up time.

焦炉煤气用于燃气轮机发电

Coke oven gas used for gas turbine power generation

燃气轮机发电是用焦炉煤气直接燃烧，驱动燃气轮机以带动发电机发电。燃气轮机发电机组设备紧凑占地少效率益好启动速度快。不过，燃气轮机运行一段时间后必须远距离运回制造厂检修，因此需要较多的备品，要求工人有较高的技术素质。

Gas turbine power generation is the direct combustion of coke oven gas, which drives the gas turbine to drive the generator to generate electricity. The gas turbine generator set equipment is compact, occupies less land, has high efficiency, good efficiency, and fast startup speed. However, after operating for a period of time, the gas turbine must be transported back to the manufacturing plant for maintenance at a long distance, thus requiring a large amount of spare parts and requiring workers to have high technical qualifications.

燃气——蒸汽联合循环发电技术（CCPP）

Gas Steam Combined Cycle Power Generation Technology (CCPP)

该技术的基本原理是将剩余的焦炉煤气和回收的高炉煤气经净化混合加压后送往燃气轮机燃烧膨胀做功，带动燃气轮发电机组发电。同时燃气轮机排放的高温烟气加热余热锅炉，产生蒸汽，带动蒸汽轮发电机组，形成联合循环发电。燃气——蒸汽联合发电是热能资源的梯级综合利用，其发电效率高达45％以上，实现了钢电联产，目前我国的济钢宝钢太钢沙钢通钢鞍钢马钢邯钢安钢涟钢等多家钢厂都在使用该技术。

The basic principle of this technology is to purify, mix and pressurize the remaining coke oven gas and the recovered blast furnace gas, and then send them to the gas turbine for combustion and expansion, driving the gas turbine generator set to generate electricity. At the same time, the high-temperature flue gas emitted by the gas turbine heats the waste heat boiler to generate steam, which drives the steam turbine generator unit and forms a combined cycle power generation. Gas steam combined power generation is an efficient cascade comprehensive utilization of thermal energy resources, with a power generation efficiency of over 45%, achieving joint production of steel and electricity. Currently, this technology is being used by multiple steel plants in China, such as Baosteel, Taiyuan Steel, Shagang, Tonggang, Ansteel, Ma Steel, Han Steel, An Steel, and Liangang.

用煤气内燃机带动发电机发电

Using a gas internal combustion engine to drive a generator for power generation

我国山东山西宁夏安微河北新疆内蒙古云南江苏等地的一些焦化厂采用煤气内燃机发电。可供选择的焦炉煤气内燃机发电机组有400千瓦500千瓦1200千瓦和2000年瓦。目前焦化行业大多采用的是500千瓦焦炉煤气内燃机发电机组。按焦炉煤气热值（低热值）16720千焦/立方米计算，1立方米焦炉煤气可发电1.1千瓦时。

Some coking plants in Shandong, Shanxi, Ningxia, Anwei, Hebei, Inner Mongolia, Yunnan, Jiangsu, and other areas in China use gas internal combustion engines for power generation. There are 400 kilowatts, 500 kilowatts, 1200 kilowatts, and 2000 kilowatts of coke oven gas internal combustion engine generator sets available for selection. Currently, the coking industry mostly uses 500 kW coke oven gas internal combustion engine generator sets. Calculated based on the calorific value (low calorific value) of coke oven gas at 16720 kilojoules per cubic meter, 1 cubic meter of coke oven gas can generate 1.1 kilowatt hours of electricity.