In the context of the continuous development of industrial technology, the problem of resource consumption and pollution has always been a key concern in the upgrading of central water tube boilers. The traditional boiler system cannot comply with the concept of energy conservation and environmental protection in the new era. This requires energy conservation and environmental protection measures based on existing waste and high energy consumption. On the basis of ensuring the quality of heating, the utilization rate of coal and other resources will be reduced, and the operating costs of enterprises will be reduced.
1. Carbon content in the slag of a water tube boiler
The carbon content in the slag of the heating boiler is also an important factor to measure the energy saving and environmental protection effect of the heating boiler. The use of some coal with higher moisture content as the raw material for the operation of the heating boiler will make the carbon content in the slag of the heating boiler too high, because the coal with higher moisture content is often insufficient in the heating boiler. Burning, there will be a considerable part of the residue.
This not only greatly increases the carbon content in the slag of the heating boiler, but also increases the consumption of coal, because in order to achieve the target temperature of the heating boiler, it is necessary to consume more coal, which makes heating The energy saving and environmental protection effect of the boiler is greatly reduced. At the same time, the unreasonable setting of the working parameters of the heating boiler will also lead to an increase in the carbon content in the slag of the water tube boiler.
The pre-set heating boiler operating parameters will have an impact during the operation of the heating boiler. If the working parameters are set unscientific and reasonable, it will easily lead to some coal combustion not being completely burned and discharged outside the furnace, resulting in coal burning. A large amount of waste increases the carbon content in the slag of the water tube boiler.
2. Boiler equipment is backward
Many oil steam boiler users are faced with old equipment, low level of automation, and mismatch between design fuel and fuel used. In the process of use, the tail flue gas treatment measures are not arranged as required. The coal-fired boilers generally use negative pressure combustion technology. However, due to the low level of boiler operators, the boilers are not noticed during operation, resulting in serious air leakage and low efficiency. The pollution is also very serious.
3. Operational management factors
Under normal circumstances, the design thermal efficiency of coal-fired industrial boilers is higher than the actual operating efficiency of the boiler, and the difference between the two is generally 10% to 30%. The above situation is closely related to the operation and management of coal-fired boilers.
Under normal circumstances, the exhaust gas temperature in the operation of coal-fired industrial boilers is 108-150 °C, and this data directly affects the energy-saving performance of the oil steam boiler. Practice shows that the change of exhaust gas temperature is proportional to the change of heat loss of flue gas, and the exhaust gas temperature increases, and the heat loss of flue gas increases.
During the actual operation of the coal-fired industrial boiler, the staff failed to adjust the boiler air volume reasonably, causing the boiler temperature to rise, or because the fuel failed to fully burn, after entering the boiler flue, the secondary combustion was carried out, resulting in exhaust heat. The loss has increased.