There are many classifications of boilers, which are generally classified according to use, structure, pressure, capacity, combustion method, heat energy source, and heat transfer medium. Industrial boilers (including atmospheric boilers) occupy a certain position in the national economy. They are indispensable power equipment for industry, agriculture and civilian use. They are used in machinery, petrochemical, mining, metallurgy, coal, light textile, agriculture and animal husbandry and other important equipment in civil heating. In order to distinguish it from large boilers used for power generation, China refers to boilers with a capacity below 65t / h for industrial production heating and building heating as industrial boilers.
Take the cost of heating 50 tons of 42 ° C hot water as an example:
1 kilogram of water needs 1 kcal of heat to heat 1 degree, and the calculation is based on 10 degrees of tap water: 42-10 = 32 degrees (Δ = 32 degrees) to warm to 42 degrees, 50 tons of water = 50000 kilograms, 1 degree = 50000 X 1 kcal = 50000 kcal heating up 32 degrees = 50000 kcal X 32 = 1600000 kcal
1. Coal-fired boiler
The calorific value of standard coal for coal-fired boilers is 5000 kcal / kg. According to the average price of coal in various places, 1.200000 kcal per kilogram ÷ 5000 kcal X 1.2 yuan = 384 yuan. The thermal efficiency of coal-fired boilers is generally 8084. ÷ 0.8 = 480 yuan.
2. Biomass boiler
The caloric value of biomass particles on the market is 4000 kcal / kg. According to the biomass particles in each place, it is calculated at 1 million yuan per kilogram ÷ 4000 kcal X 1 yuan = 400 yuan. The thermal efficiency of biomass boilers is generally 80 @ 0 ÷ 0.8 = 500 yuan.
3. Gas boiler
The calorific value of natural gas is 8600 kcal / m3. Based on the average price of natural gas in each place, the average value is 3.5 yuan per cubic meter. Calculated at 1.6 million kcal ÷ 8600 kcal X 3.5 yuan = 651 yuan. The thermal efficiency of gas boilers is generally 90%, ÷ 0.9 = 723 yuan.
According to the above analysis and comparison of the operation of industrial boilers with three different fuels, it can be seen that the prices of boilers with different fuels are also different. The main factors affecting the operating costs of boilers are fuel costs, water and electricity costs, and labor costs. 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. Boiler cost prices in Turkey need to be analyzed based on the local boiler industry.