CR4® - The Engineer's Place for News and Discussion®


Previous in Forum: "CYBERDYNE STUDIO"-like Testbed ?   Next in Forum: Diesel Engine vs. Electric Motor
Close
Close
Close
7 comments
Member

Join Date: Jan 2016
Posts: 5

Reasons for Dropping of Coal Ratio

11/08/2017 8:40 AM

Hey guyz in our industry the steam generation to coal consumption ratio was depriving every month can I know the reason???

Register to Reply
Pathfinder Tags: boiler
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
Guru
Engineering Fields - Electrical Engineering - Been there, done that, still doing it. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 12214
Good Answers: 774
#1

Re: Reasons for dropping of coal ratio

11/08/2017 9:10 AM

I suspect somebody tried to save money by switching from anthracite to lignite coal. That same penny pincher in search of more production time may have allowed too much scale to build up in the boiler. You could even have a slow leaking drip of water into the fire box reducing the temperature at the heat exchanger to the boiler.

My point here is that you do not give us any information to work with other than the immortal last words of the Wizard of Oz, "I don't know how it works!"

__________________
"Don't disturb my circles." translation of Archimedes last words
Register to Reply
Guru

Join Date: Apr 2011
Posts: 6542
Good Answers: 241
#2

Re: Reasons for Dropping of Coal Ratio

11/08/2017 1:09 PM

Could be that the industry is making changes that lower steam generation to coal consumption ratio, such as burning a larger portion of Powder River Basin (PBR) coal which has lower sulfur content but also has lower heat content.

__________________
Eternal vigilance is the price of knowledge. - George Santayana
Register to Reply
3
Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 19210
Good Answers: 1125
#3

Re: Reasons for Dropping of Coal Ratio

11/08/2017 1:18 PM

Read all of this article at the link, and you will have a list of things to check that might be the cause...

http://www.powermag.com/understanding-coal-power-plant-heat-rate-and-efficiency/

__________________
Life is like riding a bicycle. To keep your balance you must keep moving. A.E.
Register to Reply Good Answer (Score 3)
Guru
Engineering Fields - Electrical Engineering - Been there, done that, still doing it. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 12214
Good Answers: 774
#4
In reply to #3

Re: Reasons for Dropping of Coal Ratio

11/08/2017 1:50 PM

Nice article. GA

__________________
"Don't disturb my circles." translation of Archimedes last words
Register to Reply
Guru

Join Date: Oct 2008
Posts: 39867
Good Answers: 1586
#5

Re: Reasons for Dropping of Coal Ratio

11/08/2017 7:14 PM

Natural gas.

Register to Reply Score 1 for Off Topic
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 13438
Good Answers: 152
#6
In reply to #5

Re: Reasons for Dropping of Coal Ratio

11/09/2017 1:04 PM

In many plants, that is the primary reason! LOL!

I suspect our friend in India, or other country, is having the issue of the coal lower heat value dropping, thus steam gen/coal consumption would naturally decrease, sometimes by a significant amount, as others have so posted.

The other reasons would transmitter failure/errors, or someone entered a bad calibration, or that there could be a large steam leak, or a turbine "rub", that somehow was missed.

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply
Guru

Join Date: Jul 2005
Location: Stoke-on-Trent, UK
Posts: 3871
Good Answers: 118
#7

Re: Reasons for Dropping of Coal Ratio

11/11/2017 4:03 AM

Maybe some of the coal is being stolen.

__________________
Give masochists a fair crack of the whip
Register to Reply
Register to Reply 7 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
Copy to Clipboard

Users who posted comments:

Codemaster (1); James Stewart (1); lyn (1); redfred (2); SolarEagle (1); truth is not a compromise (1)

Previous in Forum: "CYBERDYNE STUDIO"-like Testbed ?   Next in Forum: Diesel Engine vs. Electric Motor

Advertisement