Why soot blowers are fitted in boiler?
A sootblower is a device for removing the soot that is deposited on the internal furnace tubes of a boiler during combustion to prevent plugging of the gas passes and maintain boiler efficiency.
What is the purpose of a soot blower?
A soot blower blasts air, steam or water (or a combination) to remove soot and ash from the interior walls of the boiler heating surfaces.
How does Sonic soot blower work?
CLANUS Sonic Soot Blower is based on the principle of kinetic energy activation of the dust particles. The Sound generator sent out powerful sound signals(140 Db) of low frequency (120-240 Hz) and high intensity at suitable intervals. The sound energy vibrates the ash particles and thus tears them away from each other.
What is the recommended air pressure for soot blowing the boiler?
135 to 260 psig
Normal ranges are from 135 to 260 psig at the nozzle of the blower. Pressure is related to the cleaning energy (PIP) required for a given area and cooling requirements.
How soot is formed in boiler?
They generally occur in oil boilers and furnaces, and are the result of excess unburned or partially burned fuel oil igniting, which blows a cloud of soot out of the boiler and into the room.
What is soot in boiler?
Soot is the inevitable result of burning fossil fuels, and boilers that run on gas or oil produce soot simply by doing their job. Large amounts of soot can be caused by a dirty, clogged or malfunctioning burner, inadequate draft or a low air-to-fuel ratio.
Why blowdown is provided in a boiler?
The primary purpose of blowdown is to maintain the solids content of boiler water within certain limits. This may be required for specific reasons, such as contamination of the boiler water. In this case, a high blowdown rate is required to eliminate the contaminants as rapidly as possible.
What is meant by soot blowing?
Definition of soot blowing : removal of soot deposits on the tubes of a steam generator by a blast of air or steam.
What is the advantage of using a retractable soot blower?
The retractable lance will remove any soot, ash or slug accumulated in the tubes. If these accumulations are not removed, a reduced heat transfer and increase in the tube metal temperatures will occur leading to failure of the tubes. In some instances, the increased metal temperatures can lead to boiler fires.
Why operating heads of soot blowers are automated?
Why operating heads of soot blowers are automated? Explanation: Soot blowers are tedious to operate manually, and since must not all be operated simultaneously, the operating heads are electric motor powered and operated by remote control on an automatic sequential basis. 6.
How can we reduce soot?
We can switch away from diesel fuels, or use more efficient, low-emission diesel engines. And there are other measures that can help reduce the volume of soot released into the atmosphere. “You can certainly put on particle traps on vehicles, off road equipment, passenger vehicles and buses, trucks.