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Industrial Boiler Systems & Application


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Industrial Boiler Systems & Application

Author : Sasha Alekhin

Submitted : 2014-01-08 03:57:07    Word Count : 787    Popularity:   Not Rated

Tags:   Boilers, Boiler Systems, Industrial Boilers, What is a boiler, How does a Boiler work, Fire tube boilers, Water tube boilers, Vertical Boilers, Steam Boilers, Boiler Manufacturers

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Copyright (c) 2014 Sasha Alekhin

Types of Industrial Boilers and their usage

Heat is an indispensable part of our existence as humans. We all rely on heat produced by the sun's rays in our day to day lives. But this solar heat is not available all day long; there is a limited time frame within which we can avail its benefits. This is why products like hot water boilers came into existence, to provide a continuous source of thermal or artificially generated heat to bridge the gap. It's a mechanism used to produce steam by treating water with heat energy which is further put to use in industrial processes, heating buildings and producing power through turbines, etc. Fuel such as coal is burnt in a furnace producing hot gases which in turn transfers this heat to the stored water and thus the most crucial product -- Steam is produced, which is the main source of its power. The same steam energy is returned back to the boiler vessel after it has been utilized, and prepared to be heated again.

There are various types of boilers available which are mostly powered by oil, coal, and gas. They consist of a pressure vessel made up of steel or in some instances wrought iron. Nowadays, electric boilers are also available which produce the energy with the help of electricity. Boilers are constructed with very heavy steel plates having thickness measuring up to 35mm or so, making them capable of handling pressures in the range of 30 bars.

Boiler systems are categorized in various ways depending upon the usage expected from them such as power generation, foe heating, and industrial processes. The other common way of classifying boilers is through their characteristics such as construction type, materials used in fabrication, pressure handling capacity, tube content (Water or fireside), source of heating (oil/gas/coal/solid fuel based) etc. Let's briefly elucidate two of the most common and typical types of boilers, their features, characteristics and usages.

Fire tube boilers: This type of boiler utilizes metal heating rods fitted in an outer vessel which is filled with water. The combustion gases flow through these rods which are fitted in rows which further heat up the surrounding water before releasing it out of the chimney. These boilers apply the highest amount of heat to the water due to the excessive heated surface available, plus they possess quite a large water storage capacity as well. They are generally used in processes which require low pressure outputs.

They are cylindrical in shape with a small rounded combustion chamber attached to their heads. These boilers have a very simple and basic design which allows them to be constructed and shipped very easily. They are also more fuel efficient, have less initial cost, and are easier to operate than water tube boilers. Fire tube boilers are further sub divided into following types:

* Horizontal return tubular boiler * Short fire box boiler * Compact boiler

Water tube boilers: In these boilers the water resides inside tubes and it's heated by combustion gases circulating outside of them; in other words, their mechanism of action is the opposite of fire tube boilers. It consists of an upper steam drum and a lower drum (referred to as mud drum) separated by a water tube. As the pressure is contained between the water tube, so that it can be constructed in large sizes and is suitable for high pressure jobs such as thermal plants. Water tube boilers are mostly vertical in shape and commonly called vertical boilers too.

The units of steam produced per hour are way higher than the fire tube boilers but on the other hand the storage capacity is less. These boilers can be built with varying designs based on steam capacity and pressure levels. The 3 basic designs are A, D and O type, which are differentiated based on tube shapes and location of the drums. This type of boilers also consists of sub types:

* Horizontal straight tube boiler * Bent tube boiler * Cyclone fired boiler

Boilers are a category of products which demand precision handling as they tend to be hazardous if not properly operated and cared for. Exploding boilers are the most common hazard, and they can be disastrous due to the large amount of suppressed heat in them. That is why immaculate precautions and safety measures are a must for avoiding such occurrences.

Safety valves, pressure monitors, water level indicators, hand hole steel plates, chemical injection lines, and water feed valves are just a few of the basic parts of a boiler that must undergo constant upkeep. Ensuring that you have a properly working boiler can mean the difference between a dangerous explosion and safely working machinery.

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For more information on Boiler Systems visit http://www.trusteam.com.au

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