Table of Contents
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.
Why are there a number of soot blower units in a large boiler?
Steam boilers An adequate number of soot blowers should be provided to keep each boiler clean in service (free of soot). The system should be designed for automatic removal of condensate to avoid water shock to the tubes and keeping steam temperature above saturation upstream of the lance tubes.
Why is it we need to soot blow exhaust gas economizer?
This is to maintain tube temperature and prevent “cold end” corrosion of tube and fins. 2) Soot blowing to be carried out at least three times daily. 3) If it is necessary to stop circulation for any reason, the unit should be soot-blown prior to shut down.
What is the purpose of Sootblowing?
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 blow soot?
Definition of soot blowing : removal of soot deposits on the tubes of a steam generator by a blast of air or steam.
What produces soot?
Soot forms as a result of incomplete combustion. To achieve incomplete combustion instead of complete combustion, the fuel must burn at a lower temperature with a slightly reduced supply of oxygen. When the fuel burns, it breaks into small particles that include soot, which settles out as a dark powdery deposit.
What is soot chemical formula?
In the hotter parts of the oxygen-free Zone I, there form, at high temperature, carbon-rich molecules that cannot be described through simple structural formulas. Initially, these primary soot particles have roughly the composition (C3H)n, and each is actually made up of several thousand carbon atoms.
How many types of Superheaters are there?
There are three types of superheaters: radiant, convection, and separately fired.