The Chongchongang Thermal Power Station has recently established an automatic combustion stabilization control system to save a lot of materials.
“We found a way to save heavy oil and coal in the introduction of the automatic combustion stabilization control system into the boiler,” said Rim Kwang Ju, an official at the power station.
In the course of analyzing the preceding research data on the combustion stabilization technology and examples of other units, the technicians came up with a plan to control the combustion stabilization with the oxygen content of waste gas from the boiler as the main factor.
Having set the oxygen contents of waste gas and hot air from the fire chamber and the quality and quantity of anthracite as points of control, they analyzed their relations with combustion stabilization and, on that basis, confirmed the technical indexes that are crucial in establishing the automatic control system.
They wrote a converter automatic control program by themselves, which maintains at a certain level the output of electric motors of the coal feeder, air blower and other pieces of equipment even when the system voltage and frequency are fluctuant, thus achieving a breakthrough in establishing the new technology.
The technicians and workers who were in charge of manufacturing the control devices put their heads together to make the protective device for the motor and automatic frequency converter in a short period, contributing to completing the project ahead of schedule.
The power station installed the automatic control system for boiler combustion stabilization based on oxygen content analysis in the waste gas into a generator boiler and saved several tons of heavy oil and hundreds of tons of coal in April alone.
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