The utilization of combustible waste gas is an important way of energy conservation and emission reduction.The progress in utilization technologies of blast furnace gas(BFG)

converter gas(CG)and coke oven gas(COG)has been presented.Among which

application of the mixture of blast furnace gas and high heating value gas in sintering machines and regenerative heating furnace is the optimal way

with the advantages of wide adaptability

low investment and fast return.The converter gas can be directly used as fuels or for steel making

of which the cost is the lowest

however

the benefit is far less than using the converter gas to prepare chemicals like CO

methanol

ethanol and others.Using the coke oven gas as fuel or for power generation has the advantages of low cost

less pollutants and high economy.The characteristics of combustible waste gas utilization technologies are summarized and compared.In addition

suggestions on the direction of development in future are also presented.The present review is helpful for further study and utilization of combustible waste gas.