Process of corrosion in bfw tank, Mechanical Engineering

Assignment Help:

Q. Process of Corrosion in BFW Tank?

The feed to the BFW Tank is hot and will be flashing when it enters the tank. The vapours will be corrosive when the tank is open to atmosphere as water vapour at the top will be saturated with oxygen and high corrosion rate is expected.

In order to minimize the corrosion in BFW Tank it is necessary to keep oxygen excluded from the system and keep the tank pressurized by an inert gas system. Oxygen ingress will cause the BFW to be corrosive to CS, therefore internal tank coating is recommended. It should be noted due to high operating temperature of BFW feed to the tank, a special blend of coating shall be specified to resist in high temperature full immersion service. If the tank is blanketed and the BFW has already been de-oxidized, there is no need for internal tank coating.

The decision for internal coating shall be assessed on a case by case basis and process and corrosion specialists shall be consulted.


Related Discussions:- Process of corrosion in bfw tank

Types of buildings required for plant, Q. Types of buildings required for P...

Q. Types of buildings required for Plant? The following types of buildings may be required: • Control rooms / Motor Control Centers (MCC) / Equipment rooms. • Electrica

Explain gated pattern, Gated pattern This is an improvement over the si...

Gated pattern This is an improvement over the simple pattern where the gating and runner system are integral with the pattern. This would eliminate the hand cutting of the runn

Calculate critical speed of shaft, The rotor of a turbo charged having mass...

The rotor of a turbo charged having mass of 10 Kg is keyed to the centre of 25 mm diameter of steel shaft of 400 mm between bearings. Calculate : (i) Critical speed of shaft.

Determine the work done by the gas system, (a) Derive the mathematical equa...

(a) Derive the mathematical equation for work done in a polytropic process (i.e.) PV n =c) (b) A mass of gas is compressed in a quasi-static process from 80KPa, 0.1m 3 to 0.4M

Thermal Stresses in Tapered Section, A rigidly fixed circular bar 1.75mm lo...

A rigidly fixed circular bar 1.75mm long uniformly tapers from 125mm dia. at 1 end to 100mm dia. at other end. If the max. stress in the bar is not to exceed 108MPa. Find the tempe

What is electrode coatings and how it works, Q. What is electrode coatings?...

Q. What is electrode coatings? • Slag Forming Ingredients. Asbestos, mica, silica, fluorspar, titanium dioxide, iron oxide, magnesium carbonate, calcium carbonate and aluminum

IC Engine, why can''t we use petrol as a fuel for diesel engines?

why can''t we use petrol as a fuel for diesel engines?

Stresses., temparature stresses in composite bars

temparature stresses in composite bars

Simple single machine system, Consider a simple single machine system. It c...

Consider a simple single machine system. It consists of workpieces that enter the system, wait their turn to be processed on a single machine, and then depart the system. The workp

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd