Explain about napthenic acid corrosion, Mechanical Engineering

Assignment Help:

Q. Explain about Napthenic Acid Corrosion?

Some crude oils contain napthenic acids, which, at elevated temperatures, may contribute to more active corrosion with or without the presence of water. The critical temperature at which severe corrosion may occur is significantly lower than if only sulphur was present. Type 316 stainless steel and Inconel 600 show the best degree of corrosion resistance. Type 502 (5% Cr) low alloy steel is useful where there is increased fluid velocity, except in furnace and heat exchanger parts. Stainless steel types 304, 321, and 347 may also be unreliable in these services.

There is some indication that napthenic acid corrosion may be mitigated by passivation of the surfaces with a thiazoline / phosphite mixture at temperatures of 550° - 660°F (200° - 316°C).


Related Discussions:- Explain about napthenic acid corrosion

Fluid friction, Fluid Friction: Fluid friction manifests when the lubr...

Fluid Friction: Fluid friction manifests when the lubricating fluid is introduced between contact surfaces of the two bodies. If thickness of lubricant or oil between the m

Determine the heat transfer, (a) Show that all reversible engines operating...

(a) Show that all reversible engines operating between the same source and sink will have same efficiency. (b) A reversible heat engine operates between two reservoirs at temper

Matlab question please help me, The salary calculation method for employees...

The salary calculation method for employees of a company is as follows: (1) If the number of working hours exceeds 120 hours, an additional 15% will be issued for the excess part;

V pulley design, #wHAT WILL BE THE PULLEY CRITERIA TO DECIDE THE RPM

#wHAT WILL BE THE PULLEY CRITERIA TO DECIDE THE RPM

., what is fluid?

what is fluid?

Low alloy creep resisting and electrodes for cryogenic , LOW ALLOY CREEP RE...

LOW ALLOY CREEP RESISTING ELECTRODES AND ELECTRODES FOR CRYOGENIC APPLICATIONS The flux coating contains small amount of alloying elements like Cr, Mo and sometimes V for creep r

Scope of corrosion assessment design, Q. Scope of corrosion assessment desi...

Q. Scope of corrosion assessment design? The purpose of this guideline is to describe the common corrosion damaging modes and mitigation methods and provides recommended materi

#thermodynamics., #A spherical aluminum vessel has an inside diameter of 30...

#A spherical aluminum vessel has an inside diameter of 30 cm and contains water at 80 ?C, with a quality of 1%. The vessel is then heated until the water inside is saturated vapor.

Find out the common velocity, Find out their common velocity: An aerop...

Find out their common velocity: An aeroplane weighing 40 kN horizontally moves with a velocity of 20 m/sec (72 kmph, that means 72 km per hour). A helicopter of weight 20 kN i

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