Steam Boiler: June 2011

Modification of Rankine Cycle

Modification of Rankine cycle aims to improve the efficiency of the cycle, in this case made the extraction of steam from turbine generator to heat feedwater, so the steam boiler can work easily and reduce requirement of fuel. Practically, turbine generator...

Deposit Formation on Boiler

Deposit is the occurrence of clumping substance in the boiler water which is caused by suspended solid such as copper oxide, iron oxide and others. Deposit is also caused by steam which is contaminated in the production process. Sources of deposit in...

Centrifugal Pump Classification

Centrifugal Pump Classification Centrifugal pump can be classified based on some parameters. The following below are the parameters of centrifugal pump classification: Based on discharge pressure: Low pressure pump, the operating pressure less...

Pump Definition

Pump is the equipment to move fluid (liquid) from one point to other point by increasing pressure of that liquid. Increasing the pressure of liquid is used to overcome flow resistance. The flow resistances can be caused by difference pressure, different...

Separation Process in Steam Drum

Steam drum is a collector and separator equipment for water and steam from water wall tubes. According to separation concept of water and steam in steam drum, separation process can be classified in three types such as natural gravity driven separation,...

Component of Economizer

Economizer has a role as a heat exchanger to increase temperature of feedwater before to be supplied into steam drum. Economizer consists of similar component with other heat exchanger but on the certain parts has different task and function. The following...

Electrostatic Precipitator as Flue Gas Boiler Filter

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Thermodynamic Analysis in Steam Boiler

Rankine cycle is the theoretical cycle which includes basic working principle of steam power plant. Rankine cycle is different from air cycle in term of working fluid that had changed its phase during cycle especially at evaporation and condensation...

Air Pollution from Steam Boiler

Parameters of air pollutants resulting from the combustion furnace of the steam boiler are: 1. Sulfur DioxideAir pollution by sulfur oxides is mainly caused by two components which in the form gas and colorless, namely sulfur...

Electric Boiler Definition

Electric boiler is one of type boiler which is classified by the heat source to generate steam with using a heating element. Boiler generally has main function to convert water into steam. Steam is obtained by giving amount of heat to water. Heat can...

Mechanism of Economizer

Economizer is one of steam boiler’s equipment which is used to heat feedwater before it is supplied into steam drum. Economizer is the heat exchanger equipment to increase boiler efficiency by absorbing heat recovery of flue gases. The lower temperature...

Deaerator Working Principle

Feedwater to be supplied into steam boiler should pass deaerator equipment. Deaerator has main functions as follow: to get rid of the gasses contained in feedwater, in this case feedwater had been processed and purified in water treatment plant and has...

Deaeration Process

Deaeration process is the process to treat water by removes dissolved gases in the water. Deaeration process is one of step in water treatment to be ready feedwater and can be supplied into boiler. The soluble gases in water are:- ...

Crust or Scale Formation in Steam Boiler

Crust or scale formation in the surfaces of pressure parts steam boiler such as water wall tubes, header, water drum and economizer are the result of minerals which are collected to form crust or scale. These minerals are hardness ions like magnesium...

Fuel and Ignition System

Steam boiler needs fuel and ignition system to perform combustion in the furnace. Fuel selection and design ignition system is the most important parameter to do firing perfectly. The following is type of fuel and ignition system which must be considered: 1. ...

Cause of Failure in Fire Tube Boiler

Fire tube boiler is the type boiler which is classified based on tube type. The combustion occurs and flow through inside tube and boiler water is distributed outside tubes. When fire tube boiler is running, there are possibilities of failure occur....

Advantage & Disadvantage Fire Tube Boiler

Each steam boiler type has its advantages and disadvantage as well as with the type of fire tube boiler. The following are advantages and disadvantages if the owner of power plant choose fire tube boiler as his boiler. Advantages of fire tube boiler: 1....

Fire Tube Boiler Based on Configuration

Fire tube boiler is one of type boiler which is classified based on tube type. Fire tube it self can be classified based on configuration as Horizontal Fire Tube and Vertical Fire Tube. The following below is its classification: 1. ...

Reason of Corrosion in Steam Boiler

Corrosion can occurs in every point of location in steam boiler. Each location of occurrence, corrosion can be caused by some reasons depend on type of corrosion. The following below is the classification of corrosions in steam boiler based on reason...

Location of Corrosion in Steam Boiler

There are some types of corrosions which possible occur in steam boiler. Each type has reason for occurrence and location of occurrence. Base on them corrosion can be classified as pitting corrosion, fatigue corrosion, hydrogen embrittlement, caustic...

Advantage Fluidized Bed Boiler

Fluidized bed boiler has more some advantageous than other type of boiler such as pulverized coal boiler. The followings below are the characteristic of fluidized bed boiler which has more attractions: 1. Manage emission...

Fluidized Bed Boiler

Fluidized bed boiler use non combustible materials such as sand or ash as medium for taking heat transfer process with fluidize fuel hydro dynamically. A bed is required to burn fuel and combustion air is supplied in high pressure. Fluidized bed boiler...

General Thermal Design Steps

Thermal design of steam boiler is the process to design furnace, heat transfer surface, control steam and water temperature, and select suitable burner or without burner method. Design furnace is calculation process to reach the best size and configuration...

Pulverized Coal Firing

Steam boiler can be classifiedbase on fuel. One of them is solid fuel such as bagasse, wood and coal. Methods to burning coal can be distinguished by underfeed stoker, overfeed stoker and pulverized coal firing. Pulverized coal firing is generally used...

Multi Cyclone in Steam Boiler

There are three type of dust collector; multi cyclone, baghouse, and electric static precipitator. The steam boiler which has stoker type, usually use multi cyclone to collect dust. Dusts from flue gas are separated by centrifugal and gravitation force. Figure...

Maximum Allowable Working Pressure Calculation

The maximum allowable working pressure (MAWP) of a steam boiler is an absolute restriction of pressure within psig unit for a steam boiler is allowed to run. The ASME BPV Code (American Society of Mechanical Engineers Boiler and Pressure Vessel) says...