salinity in high pressure marine boiler

Boiler energy efficiency measures - shipboard good practices

Boiler energy efficiency measures - shipboard good practices Formation of marine boiler : A boiler in one form or another will be found on every type of ship. Where the main machinery is steam powered, one or more large watertube boilers will be fitted to produce steam at very high temperatures and pressures.

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License Qualifications. :: High-pressure Boiler Operating

2006 New York Code - License Qualifications. § 26-162 License qualifications. a. In addition to the general qualifications prescribed in section 26-133 of this subchapter an applicant for a high-pressure boiler operating engineer license shall submit satisfactory proof establishing that he or she: (1) Has been employed as a fireman, oiler, general assistant, journeyman, boiler-maker or a

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BOILER SELECTION CONSIDERATIONS

The following is an overview of different types of boilers. Scotch Marine - The Classic Firetube Boiler The Scotch Marine style of boiler has become so popular in the last 40 years that it frequently is referred to simply as “a firetube boiler.” Firetube boilers are available for low or high pressure steam, or for hot water applications.

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WATER TREATMENT

Vecom Marine is a joint venture of Vecom Group & Unimarine Group - Version 3.1 - Chapter 11 - Page 3 WATER TREATMENT BOILER WATER TREATMENT where the silica content is high, or if feed water is taken from cement washed tanks.

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Explanation of Boiler Feed Water & It's Treatment - Magic

Jan 16, 2014 · Dragonfly Education is an education company, that is building proprietary education content for higher learning in technical streams. We are enabling B.Tech

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What can cause High Superheat temperature in a high pressure

The highest pressure boiler that I ever saw as a marine Chief Engineer was 2400 psi or 80 atmospheres. The US Navy operated 1200 psi boilers for many years. High pressure steam generators in

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High Pressure Boilers - ATP Learning

High Pressure Boilers continues to be the leading resource for preparing for high pressure boiler operator and facility operating engineer licensing. This textbook provides a comprehensive overview of the safe and efficient operation of high pressure steam boilers and related equipment.

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Why have steam boiler run at 85 PSI and have regulator drop

With 90#'s in the boiler that gives the engineers or BMS system time to bring the back up boiler on line and get to a operating pressure greater then 30#'s before running out of steam! Same reason as there's generally 3 boilers. 1 Primary, 1 standby and 1 back up.

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Water Treatment for High Pressure Boilers in Sugar Plant

Water Treatment for High Pressure Boilers in Sugar Plants Introduction A number of studies have been carried out in India by various Organisations which indicate tremendous potential for power generation in sugar factories through cogeneration scheme. In view of this, Government of India is encouraging sugar plants to

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Boiler Water Treatment in Marine Boilers - ShipFever

A Boiler is required to operate in between 9.5 to 11.5 P.H condition based on its type. (Auxiliary – 9.5 to 10.5 & Large Boilers 10.5 to 11.5). The test will show the alkalinity of the boiler water due to hydroxides and carbonates. It help protect the boiler from caustic embitterment.

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Salt in Marine Boilers - Naval Marine Archive

the boiler as, or compare it to, a great salt-pan. Just as in Cheshire and Worcestershire salt is made by the simple process of evaporating water in large pans, so does salt, etc., collect in marine boilers; but there is this difference, the scale formed on boilers is not soluble in water, while salt is.

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Exhaust Gas Boilers And Economisers working procedure

Exhaust Gas Boilers And Economisers working procedure The use of exhaust gases from diesel engine: The use of exhaust gases from diesel main propulsion engines to generate steam is a means of heat energy recovery and improved plant efficiency. An exhaust gas heat exchanger is shown in Figure above.

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Chapter 9 Boilers - NAVY BMR

temperature corresponding to pressure. For example, a boiler may operate at 415 psig (pounds per square inch gauge). The corresponding saturation temperature for this pressure is 483°F, and this will be the temperature of the water in the boiler and the steam in the drum. This steam can be passed through

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Maximim Salinity Allowed In High Pressure Marine Boiler

2019-8-24 · Gauge Pressure: The pressure within a closed container or pipe as measured with a gauge. In contrast, absolute pressure is the sum of atmospheric pressure (14.7 lbs/sq in) PLUS pressure within a vessel (as measured by a gauge).

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Boiler Questions and Answers regarding Your Boiler

Answer. This will take you to about 517 gallons, so a 500 gallon tank will work. Maybe an easier way is to plan for 1 gallon storage for every boiler horsepower. 500 bhp = 500 gallon tank 300 bhp = 300 gallon tank But, be careful! Depending upon your particular process you may need a bigger tank.

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High Pressure Boiler Inspection Procedures (with Checklist)

Jul 02, 2019 · A high-pressure boiler is defined as a boiler in which steam or vapor is generated at a pressure equal to or greater than 15 psig, or a boiler in which water is heated at a temperature of 250°F and a pressure greater than 160 psig, when water is heated for use external to the boiler itself.

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Maryland Boiler Safety: High Pressure Boilers

A high pressure boiler contains enough energy to cause violent destruction if misused. A high pressure boiler can be a power boiler creating steam or other vapor at more than 15 psig, or a high pressure, high temperature water boiler, operating at more than 160 psig or 250 degrees Fahrenheit. set at or below the maximum allowable working pressure.

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High Pressure Boilers Test 1 - ProProfs Quiz

Many different industries use High-Pressure boilers for central heating systems and many other applications. The water in boilers is used to produce steam which generates energy for other processes. High-pressure boilers require specialized care to operate. Do you think you have what it takes to operate them and understand their use?

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Electric Steam Boilers : Vapor Power

Electric Steam Boilers. Vertical pressure vessel means dryer steam; Compact footprint; Lower circuit loading allows for overvoltage conditions; Individually replaceable elements; High Pressure; Steam from: 30 kW to 4320 kW (102 to 14,688 PPH) Pressure from: 15 – 2500 PSIG Voltages from: 208 – 600 Volts

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BOILER SELECTION CONSIDERATIONS

frequently is referred to simply as “a firetube boiler.” Firetube boilers are available for low or high pressure steam, or for hot water applications. Firetube boilers are typically used for applications ranging from 15 to 1500 horsepower. A firetube boiler is a cylindrical vessel, with the flame in the furnace and the combustion gases inside the tubes.

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SCOTCH MARINE FIRETUBE STEAM BOILER MANUAL

Set point: A specific value of pressure or temperature used in a control where it will switch on or off. Aquastat: Water temperature control device BoHP: Boiler horse power: The evaporation of 34.5 lbs of water/hr. from a temperature of 212°F into dry saturated steam at same temperature. Equivalent to 33,475 Btu/Hr.

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Marine Engineering: Boiler Water Testing

Dec 15, 2010 · 2.It gives warning against high concentration of sodium hydroxides and subsequent damage to the boiler from caustic embitterment. Procedures: 1.Take a 200 ml water sample in the stopped bottle. 2.Add one P- Alkalinity tablet and shake or crush to disintegrate. 3.If P-Alkalinity is present the sample will turn blue.

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Water Handbook -Boiler Deposits: Occurrence And Control | SUEZ

High-Pressure Boiler Water Treatment High-pressure boilers usually have areas of high heat flux and feedwater, composed of demineralized makeup water and a high percentage of condensate returns. Because of these conditions, high-pressure boilers are prone to caustic attack.

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What are the list of issues with using salt water in boilers

place a marine propeller in a large pressure cooker. Prepare the water by adding 35 to 36 grams of sea salt per liter and mix until dissolved. Place several liters of the salt water in the pressure cooker; Seal the pressure cooker. Make sure your home owner’s or renter’s insurance is all paid up. Turn on the heat and run for your lives.

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Starting and Stopping Boiler - Marine Engineering

Check that the air valve is open if the boiler pressure is below 1.0 bar. Start the burner on manual control and on low load. Check that the water level does not rise too high during the pressure rising period. Drain via the blow down valves if the water level is too high. If the air valve was opened close it when only steam blows out.

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Water Handbook - Preboiler & Industrial Boiler Corrosion

High-temperature hot water boilers operate at pressures of up to 500 psig, although the usual range is 35-350 psig. System pressure must be maintained above the saturation pressure of the heated water to maintain a liquid state. The most common way to do this is to pressurize the system with nitrogen.

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My Boiler Pressure is Too High? A 24|7 Home Rescue Guide

If your boiler pressure is too high, perform these simple tasks to bring it down to the right level. Boilers should typically have around 1 bar of pressure. 24¦7 Home Rescue

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Steam Boiler Questions and Answers

The salinity will rise rapidly since the salt remains in the boiler while the water boils off. Salt will son precipitate and accumulate on the bottom and also on the heating surface where it, just as boiler-scales, inhibit the heat transmission to the water and causes the metal to overheat and in worst case burst.

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Marine Boilers - Marine Engineering Knowledge Part 1

Oct 13, 2015 · Boiler blow down is made to reduce the density of salt and to remove the dissolved and suspended solids, also the floating solid impurities in the boiler system. If there are not removed from the boiler water system, foaming, priming, corrosion will occur in the boiler steam space and feed water system.

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Loeffler Boiler - Construction, Working with Diagram

Mar 03, 2017 · Loeffler boiler has the capacity to produce 100 tonnes/ h of steam at a temperature of 500 degree C and pressure of 140 bar. Advantages It can use salt water for the steam generation.

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Firetube Boiler Design, Construction & Engineering

High pressure - Steam boilers above 15 psi. Hot water boilers above 160 psi (hydrostatic pressure) and/or 2500 F outlet temperature Section IV Low pressure - Steam boilers less than 15 psi. Hot water boilers less than 160 psi and/or 250 F. outlet temperature 43

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High Pressure Boilers Flashcards | Quizlet

Fire tube boiler with three tube sheets and a turnaround chamber, with a water leg formed between the rear tube sheet an chamber Water tube boilers are designed to work as high as 3206 psi

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Marine Subjects: Marine Boiler's

§ Boiler blow down is made to reduce the density of salt and to remove the dissolved and suspended solids, also the floating solid impurities in the boiler system. § If there are not removed from the boiler water system, foaming, priming, corrosion will occur in the boiler steam space and feed water system.

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Basics of Marine Engineering: BOILER WATER

Nov 29, 2012 · Iron - Iron is carried into the boiler in various forms of chemical composition and physical state. Most of the iron found in the boiler mainly enters as iron oxide or hydroxide. Any soluble iron in feed water is converted to the insoluble hydroxide when exposed to high alkalinity and temperature in boiler. These iron compounds are of 2 types i.e.

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Boiler – Fundamentals and Best Practices

great deal as the boiler pressure increase The boiling point (b.p.) increases as the pressure increases Thus the sensible heat increases as the pressure increases, and the latent heat decreases Boiler pressures are expressed in psia, psig, bar, kg/cm2, kpa Steam

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High-Pressure Steam Cycle and Boiler Water Treatment

• Pressure inside the desuperheater is lower than the boiler drum pressure so boiler water in-leakage carrying dissolved solids and chemical compounds such as caustic and phosphate can occur into the desuperheated steam-condensate and precipitates can deposit in the turbine

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Marine Steam Boiler Water Test Procedures, Impuruties and

Superheated steam from the boiler is fed into the steam turbine where it expands through the different stages before exiting into the main condenser. This converts any remaining steam to condensate which is fed through the deaerator, and several heaters before being pumped under high pressure back into to the boiler via the main boiler feed valve.

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Marine steam boilers

A water-tube Marine boiler is a steam generator consisting of a steam drum and water-drums and tubes which are exposed to the heat of a furnace and arranged so as to promote rapid water circulation in the steam-boiler. At high pressure, providing a more positive means of maintaining the circulation becomes desirable and advantageous.

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Why have steam boiler run at 85 PSI and have regulator drop

They ran a 60-70 pound line down there and put a pressure reducing station to reduce pressure to 10 pounds for the air handlers and a hydronic tube bundle. Hi pressure went up to the sterilizers which were conveniently directly above the mechanical room. The boilers were a matched pair of 338 HP Kewanee scotch marine, 2 pass boilers.

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BOILER WATER TREATMENT - DieselShip

As a knock on effect will slightly increase boiler water alkalinity. Stable at high temperatures so is used more than hydrazine to control the steam line alkalinity as there is less chance of copper corrosion which occurs with the prescience of ammonia. Proper boiler water treatment eliminates sludge and scale deposits within the boiler.

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