At present, energy-saving emission reduction and the establishment of a sustainable economic model have become the country’s top priority, but China’s coal utilization rate is only around 30%, far below the international average of 78%. The steam boiler is an energy conversion device. The energy input to the boiler is in the form of chemical energy in the fuel, electric energy, heat energy of high-temperature flue gas, etc., and is converted by the boiler to output steam, high temperature water or organic heat having a certain heat energy. Carrier. Biomass boilers: horizontal biomass boilers, vertical biomass boilers.
Biomass gas heat transfer oil furnace, biomass steam boiler, biomass hot water boiler, biomass heat transfer oil furnace. The gas-fired steam boiler adopts the combustion machine under-position mode, the two-pass structure, the fuel combustion is sufficient, the boiler runs stably and takes up less space, and the smoke pipe is inserted with the spoiler to slow the smoke exhausting speed, increase the heat exchange amount, and the boiler thermal efficiency is high and lower. User usage fees Therefore, it is imperative to increase the utilization rate of coal combustion. At present, the control system of coal-fired hot water boilers achieves precise control and real-time monitoring.
Through the control of the water temperature, the control of the fan speed is realized, which ensures the full combustion of the coal and the stability of the furnace negative pressure, which not only saves coal but also ensures safety. Boiler is an important equipment for converting primary energy into secondary energy in industrial production and heating, and has been widely used in industrial production and daily life. The coal-fired hot water boiler control scheme is designed reasonably, the monitoring mode is convenient, the operating state is stable, and the whole process is thoughtful and has received good feedback from users.
It is believed that in the future, intelligent coal-fired hot water boiler control solutions can serve industrial production more widely, as well as heating, bathing, domestic hot water, etc. in hotels, schools, hotels, residential areas, etc., saving coal costs and improving combustion for users. Efficiency and safe operation guarantee a solid guarantee. The problem of long-term accumulation of users has been completely solved, and the water temperature is stable.
The outlet water temperature is set by the ambient temperature, and the grate speed is adjusted according to the difference between the actual outlet water temperature and the set outlet water temperature, that is, the boiler feed amount is adjusted to ensure the stability of the outlet water temperature. Energy saving and emission reduction is outstanding. Taking the change of the furnace speed as the feedforward signal, combined with the oxygen content signal of the flue gas or the temperature of the furnace, the PID algorithm is used to control the speed of the blower to ensure the full combustion of the coal, improve the utilization rate of coal, and effectively reduce the emission of harmful substances.
Excellent safety performance. Taking the change of the fan speed as the feedforward signal, the fan speed is calculated and PID controlled according to the furnace pressure value to ensure the stability of the furnace negative pressure. A new large-lag PID control algorithm based on intelligent horizontal hopping is introduced. After the control is implemented, a certain waiting time is given to observe the effect, and according to the effect, it is determined whether or not the control is further implemented, and the multi-parameter input and the multi-parameter output control mode are adopted.
