20 ton coal fired steam boiler energy saving

20 ton coal fired steam boiler energy saving
Boiler is an important equipment of energy conversion. It converts primary energy (fuel) into secondary energy (steam or hot water), and it is the first pass of energy utilization. The steam supplied by the boiler is not only used as a working medium for the conversion of thermal energy into mechanical energy to generate power, but also widely used as a carrier of heat required for industrial production, heating and ventilation. Widely used in electric power, machinery, metallurgy, chemical, textile, paper, food and other industries.

China’s industrial boilers mainly coal, is the world’s coal – burning industrial boiler production and use of the first big country. The annual amount of coal burning reaches one third of the national coal production, showing that the industrial boiler is the major consumer of primary energy in China. Nowadays, the sustainable development of environmental protection and energy saving is advocated. As an important non-renewable energy resource, coal has new requirements on the efficiency, energy saving and environmental protection of modern coal-fired industrial boilers. The following from the selection of combustion industrial boiler, boiler automation control, energy saving of high energy consumption power equipment and ash recovery and reuse aspects of modern coal-fired boiler energy saving and environmental protection.

20 ton coal fired steam boiler energy saving

Circulating fluidized bed boiler is a new type of boiler with high efficiency, low pollution and clean combustion. Its main characteristic is that the boiler furnace contains a large number of materials, during the combustion process, a large number of materials are carried to the upper part of the furnace by the flue gas, through the separator arranged in the outlet of the furnace, the materials and flue gas separated, and through the non-mechanical mode return valve to the material back to the bed, multiple cycle combustion. Due to the high concentration of materials, with a large heat capacity and good material mix, generally every kilogram of flue gas can carry several kilograms of materials, these circulating materials bring high heat transfer coefficient, so that the boiler heat load regulation range is wide, strong adaptability to the fuel. Circulating fluidized bed boiler adopts closed higher curing rate bubbling bed, and not like a bubbling bed has a clear interface, due to the strong drip in bed flow and material circulation, increase the retention period of the fuel in the furnace, thus has higher efficiency than bubbling on the bed, can stable operation under low load, circulating fluidized bed boiler operation without adding auxiliary combustion temperature is usually between 850 ~ 900 ℃, is the ideal temperature range for desulphurization, used in furnace desulfurization technology, into the furnace Shi Shi as desulfurizer, fuel and desulfurizer after many cycles, repeated low temperature combustion and desulfurization reaction, In addition, the desulphurization efficiency can reach 80~90% and the emission of sulfur dioxide can be greatly reduced. At the same time, the circulating vulcanization bed adopts graded air supply combustion, so that the combustion is always carried out under low excess air, thus greatly reducing the generation and emission of ammonia oxide.

The circulating vulcanized bed boiler also has the high combustion efficiency, can use the inferior fuel, the boiler load regulation good, the ash residue easy comprehensive utilization and so on the advantage, therefore has obtained the rapid development in the world scope. With the increasingly strict requirements of environmental protection, it is generally believed that circulating fluidized bed is one of the most practical and feasible high efficiency and low pollution coal-fired equipment.

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