Coal Boiler vs Gas Boiler Running Costs

In response to national energy conservation and emission reduction policies, many coal-fired boilers used by many enterprises are faced with retrofitting or replacement. However, gas-fired boilers have higher operating costs than coal-fired boilers. The operation cost of gas and coal-fired boilers has become a key issue for many enterprises. This article analyzes and compares the operating costs of gas-fired industrial boilers and coal-fired industrial boilers in terms of coal, electricity, labor costs, and sewage charges.

1. Gas boiler running costs

The amount of natural gas required to produce 1 ton of steam from a gas boiler = heating capacity of the boiler ÷ calorific value of natural gas ÷ thermal efficiency = 600,000 Kcal ÷ 8600 Kcal / m³ ÷ 99.8% = 69.9 m³; combined with the natural gas market price of 3 yuan / m³, the gas boiler generates 1 ton The cost of steam = 69.9m³ × 3 yuan / m = 209.7 yuan.

2. Coal-fired boilers running costs

The amount of second-class smoke medium required for coal-fired boilers to produce 1 ton of steam = boiler heating capacity ÷ calorific value ÷ thermal efficiency = 600,000 Kcal ÷ 5000 Kcal / kg ÷ 82% = 146 kg; combined with the market price of second-class bituminous coal 300 yuan / t, The cost of producing 1 ton of steam for a coal-fired boiler = 146 kg × 300 yuan / t ÷ 1000 = 43.8 yuan.

In summary, gas boiler operating costs: coal-fired boiler operating costs = 4.8: 1.

According to the above analysis and comparison of the operation of industrial boilers with two different fuels, it can be seen that the main factors affecting the operating costs of boilers are fuel costs, water and electricity costs, and labor wages. Although the fuel cost of a gas furnace is higher than that of a coal furnace, it has a significant reduction in labor costs, water consumption, power consumption, waste ash fees, maintenance costs, and environmental protection costs compared to a coal furnace. The quality of continuous steam supply is also well guaranteed. And it has its absolute advantages in reducing the pollution of emissions to the atmosphere, energy saving and emission reduction of slag and coal yard pollution to the environment, and protecting the environment.