Exhaust Gas Boilers And Economisers Arrangement Auxiliary boilers on diesel main propulsion ships, other than tankers, are usually of composite form, enabling steam generation using oil firing or the exhaust gases from the diesel engine. With this arrangement the boiler acts as the heat exchanger and raises steam in its own drum.

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  What is Boiler and it's working principle - Engineering Insid

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  • Overview29-10-2017· A boiler is simply an enclosed vessel which boils water and ultimately turns it into steam which is used for heating of rooms and heavy fuel oils on the ships. Also Read:  Steam Engine Parts And Working The boilers are fitted with different safeties as the steam pressure is up to 8 bars in most cases.
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The exhaust gases leaving the boiler are generally at high temperature and this waste heat is extracted by installing an Economiser or Water Preheaters to preheat the feed water to the boiler and Air Preheaters to pre-heat the air coming from the Forced Draft Fan required for the combustion of fuel.

Selective non-catalytic reduction involves the injection of a NOx reducing agent, such as ammonia or urea, into the boiler exhaust gases at a temperature of approximately 1400-1600°F. The ammonia or urea breaks down the NOx in the exhaust gases into water and atmospheric nitrogen. Selective non-catalytic reduction reduces NOx up to 70%.

The condenser is a vertical condenser with process vapours on tube side and boiler feed water on shell side. The outlet of the shell side is a two phase flow. Pipe thickness reduction of the shell side outlet pipe is observed for last couple of years. We replace the piece of pipe every one year.

09-12-2015· The exhaust gas boiler is designed as a vertical boiler with a cylindrical shell surrounding the boiler tubes and water drum as well as the steam space. The tubes consist of a large number of smoke tubes and a small number of stay tubes. The stay tubes with an increased diameter act as support for the boiler.

07-06-2016· Marine boiler is nothing but a boiler used on board ship, it is designed as per required criteria for ship types. In a layman language, it's a steam generator. It's a closed pressure vessel in which fluid is heated to generate steam, also called (steam boiler). Open vessel, generating steam is not a boiler.

Click to view on 4:3916-01-2014· Boiler Basics Design and Application Differences - July 2014 - Duration: 45:20. Cleaver- Brooks 94,470 views. 45:20. Webinar: Industrial Boiler Water Treatment and Chemistry - An Introduction -