All fuels (gaseous fuel, liquid fuel, and solid fuel) has comprise some sulphur if it is burned will generate compounds which can cause corrosion. Corrosion must be prevented because it would damage the pressure part in the steam boiler. Sulphur may...
Rules Regarding the Use of Material on Steam Boiler
All of materials used for construction of the steam boiler for best design should refer to ASME Code (American Society of Mechanical Engineers) because ASME Code takes high care to ensure the quality of the material. All of specification materials with...
Demineralization Process
Feed water before it is supplied to the steam boiler should be treated first to be suitable water for feeding into steam boiler. One of water treatment is demineralization process. Demineralization process is the process to remove dissolve matter in...
Design Buckstay in the Steam Boiler
Fig. 1: Design Buckstay in the Steam Boiler
The furnace of steam boiler has internal pressure which is usually designed ±200 mm wg. The internal pressure is resisted by attaching buckstay in every approximately 2-3 m along the height of furnace wall....
Classification of Circulation Water Steam Boiler
A steam boiler has system circulation of water to converts it into steam continuously. In the Water Tube Boiler, water starts from water treatment system will be distributed to steam boiler through economizer to steam drum. From steam drum water flow...
Auxiliaries of Steam Boiler
Auxiliaries of steam boiler are devices that be installed to the steam boiler, and can make it operates efficiently. These devices should be maintained and controlled, so steam boiler can run in good condition. Some of auxiliaries which are installed...
Appurtenances of Steam Boiler
Appurtenances are devices which are installed to the steam boiler readily to make steam boiler can be performed safely. Appurtenances can also be known as mounting and fitting. Safety should be paramount in designing steam boiler. The following below...
Classification of Superheater in Steam Boiler
Superheater is a device consists of tubes which get the heat from the product of combustion to add additional heat into steam, so the temperature of the steam passing through the tubes raise higher than its saturation temperature. The superheater can...
Maintenance Tools in Steam Boiler
Steam boiler needs specialized tools to do maintenance properly, so steam boiler can operate continuously and efficiently. The required tools are depending on type of maintenance; these are some variety of tools and equipments:
1. ...
Classification of Maintenance Steam Boiler
Maintenance is required to perform and maintain steam boiler in good condition. Maintenance can be classified into two types as the following:
1. The routine and preventive maintenanceThe routine and preventive maintenance...
Maintenance Program of Steam Boiler
Steam boiler plant should running well, efficiently and safety. The owner must have plan or program to control maintenance of steam boiler plant to avoid unscheduled shutdown occurs. Regular and routine maintenance can make the steam boiler operates...
Design Spray Desuperheater of Steam Boiler
In steam boiler, desuperheater can be known as attemperator which has function reduce and control temperature of superheated steam. Superheated steam is derived from saturated steam which be heated again through superheater. Temperature of superheated...
Steam Boiler Feedwater Pump
Fig. 1: Steam Boiler Feedwater Pump
A steam boiler feedwater pump is rotating device applied to serve feedwater which taken from the feedwater heater to be supplied to the steam boiler. Ideally a power plant need at least two steam boiler feed pump...
Mechanism of Combustion Air Supplied into Steam Boiler
There are some mechanisms of combustion air will be supplied into steam boiler:§ Natural DraftIf the height of stack is higher from sea level, so pressure above stack will be lower than one atmosphere....
Composition of Air Combustion in Steam Boiler
The steam boiler must have sufficient supply of air to make combustion properly. Air is one of three important parts for combustion to take place, Air-Fuel-Heat. The air for combustion contains based on volume, 21% Oxygen (O2) and 79% Nitrogen (N2)....
Air System Devices of Steam Boiler
Steam boiler needs auxiliaries and appurtenances to perform it working in good condition efficiently and safely. One of steam boiler’s auxiliaries is air system devices. Air system provide sufficient air in combustion process of steam boiler and as medium...
Evaporation in Steam Boiler
Evaporation is the process changing water into steam. In this evaporation process requires heat transfer that be obtained from combustion process in the furnace steam boiler. Evaporation occurs in the water wall tubes of steam boiler. Water from...
Classification of Furnace Steam Boiler
Furnace of steam boiler is the space in which combustion of fuel take place. Furnace can be classified in many types. The general classifications of furnace steam boiler are as follow:
§ Based on wall...
Stack of Steam Boiler
Fig. 1: Construction of Stack in Steam Boiler System
Stack is a equipment to take out the product of combustion at a sufficiently high elevation to prevent disturbance caused by ash, low flying smoke, and soot and to disperse the combustion gases....
Classification of Soot Blower
Fig.1: Long Retractable Soot Blower
Soot blowers that are installed in steam boiler commonly can be classified as:
1. Long Retractable Soot Blower
This type of soot blower is located in area superheater and reheater....
Soot Blower of Steam Boiler
Fig. 1: Soot Blower of Steam Boiler
Soot blowers is mechanical device automatically controlled to deliver intermittent jet of compressed steam or air to clean ash, soot, slag from heat absorbing surfaces by blowing on the surface. Soot...
Classification of Air Heater
Air heaters in a steam boiler system are classified according to their principle of operation as:
§ Tubular Air Heater
Fig. 1: Tubular Air Heater
In a tubular air heater, energy is transferred from the...
Air Heater of Steam Boiler
Fig. 1: Air Heater of Steam Boiler
Air heater has an important role to improve the efficiency of the high thermal of the steam boiler by utilizing the thermal energy with low temperature flue gas from the steam boiler before being discharged...
Design Superheater of Steam Boiler
Superheater is a device for producing superheated steam, typically a group of tubes exposed to heat through which steam is passed. Its purpose is to add additional heat to the steam. Thus a superheater is employed in the steam boiler to add additional...
Water Drum of Steam Boiler
Fig.1: Water Drum of Steam Boiler
If the surface heat transfer in steam boiler may not be enough to produce steam saturation for specific end use, so require additional tubes to increase heat transfer surface....
Steam Drum of Boiler
A steam drum is a pressure chamber of a steam boiler located at the upper extremity of steam boiler circulatory system. It is a reservoir of water/steam at the top end of the water tubes. The steam drum stores the steam generated in the...
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