How Watertube Boilers Work (Engineering)
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- čas přidán 8. 12. 2019
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Learn how watertube boilers work! This 3D animated video shows you all of a watertube boiler’s main components and how it works!
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▶️Introduction
Watertube boilers (also spelt as ‘water tube’ or ‘water-tube’) are used whenever a large steam production capacity is required; they are typically high pressure and high temperature boilers. This design of boiler is used extensively in the power generation industry to provide steam for steam turbines. Smaller watertube boilers may be used in industrial plants that have a high steam demand, but low fluctuations in demand.
The 3D model shown in the video is a coal fired watertube boiler. Coal is the primary fuel for most thermal power stations because it is relatively cheap whilst also having a comparatively high heat value.
Raw coal is fed to the coal pulverisers then into the boiler where it is burnt. Centrifugal fans are used to supply the primary and secondary air required for combustion. Water enters the boiler through the economiser and is gradually heated as it passes to the steam drum.
Water exits the steam drum via downcomers then flows through the front, rear, and side furnace walls. The tubes surrounding the furnace are called ‘risers’ due to the water rising-up through the tubes. After the furnace walls, the water has been converted to wet steam, and it flows to the steam drum.
Dry saturated steam exits the top of the steam drum and flows to the primary superheater, platen superheater, and finally through the secondary finishing superheater. Steam is discharged from the boiler to the high pressure steam turbine. At this stage, the superheated steam is ‘dry’ and contains no entrained moisture (it has a high dryness fraction and high enthalpy -see our thermodynamics course to learn more-).
After the steam has transferred some of its heat to the high pressure steam turbine, it is returned to the boiler to be reheated in a reheater superheater; the steam then enters the intermediate pressure steam turbine and low pressure steam turbine(s).
Exhaust/flue gases are discharged from the boiler via the stack.
Note that heat is transferred to the water via radiation (in the furnace), conduction (through the tube walls) and convection (as the hot gases pass through the boiler).
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Want to teach/instruct with the 3D models shown in this video? Then visit:
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## The process through which the dissolved gases are removed from water is called the “Deaeration Process”. The equipment, which is used in this method, is called “Deaerator“.
# Why do we use deaerators?…
The Deaerator (DA) tank uses steam to preheat boiler feedwater to a temp. at which dissolved O2 & CO2 will become separated from the feedwater before it is pumped to the boiler. The purpose is to protect the boiler and steam/condensate piping from corrosion that would be present when the water evaporates into steam. An additional benefit is that the number of chemicals used to treat the boiler water can be reduced.
#water #watertreatment #saftey #boilers #explotion #hazard #plant #construction #construction
techproces.com/deaeration-process/
@@Rony098963 Deaerator is usedd to prevent the oxide formation inside the boiler which leads to explosion
Hats up. You intended to share this video for 3 months and this video still existing for 3 years
The 3d model was going to be freely available for 3 months, not the video
I have been in this power plant operation industry for 10 yrs but never been in boiler erection stage & was uncertain about pressure parts arrrangements. Now very clear with ur video. Simply super👍👍👍
Thank you so for the explicit details and the contents you create. Your tutorials have been profoundly helpful for me while preparing for an interview for a coal fired super critical power plant
I was looking to see some details re marine water tuve steam engines and all is clear. Thanks for this, the models are great. Thanks for spending the time and effort to create this video.
With the ID fan pulling a draft through the boiler you can actually open the inspection doors and see the fireball. Using a welding mask to see is even better! Thanks Savree, very knowledgeable.
Bravo. Excellent work on the details of the implementation of a boiler. Learning from diagrams in a book can only take you so far; this was an excellent demonstration.
Excellent video! I work in the power industry, primarily concerning the boiler and piping support structure. Fun fact. A good rule of thumb when it comes to thermal expansion of piping (A335, P22, P91, etc.) is that 100 feet of pipe at 1000 degrees F will expand 10 inches along its length. All of the support structure (including the boiler, which is hung from the top) has to accommodate that expansion. Looking forward to your next video!
Simply amazing! The 3D model and how it was presented was simply perfect. Thank you so much for uploading this type of content.
## The process through which the dissolved gases are removed from water is called the “Deaeration Process”. The equipment, which is used in this method, is called “Deaerator“.
# Why do we use deaerators?…
The Deaerator (DA) tank uses steam to preheat boiler feedwater to a temp. at which dissolved O2 & CO2 will become separated from the feedwater before it is pumped to the boiler. The purpose is to protect the boiler and steam/condensate piping from corrosion that would be present when the water evaporates into steam. An additional benefit is that the number of chemicals used to treat the boiler water can be reduced.
#water #watertreatment #saftey #boilers #explotion #hazard #plant #construction #construction
techproces.com/deaeration-process/
I fell asleep at 2 minute mark
As a Student now one taught me better about boilers this much clearly , What an exccelent way to present , If I had money I would have enrolled in many of your courses . Thanks for making this video and making this amazing 3d Model
That's a lot of work you have put in these videos. Thanks a ton.
Thank you so much for the excellent explanation. In fact to understand how a Boiler works is not complicated , what happens is that it's very difficult to find a real good teacher
You are welcome!
Jhon, thank you so much for teaching me so clearly this system!! God bless you!!
Very Good Effort to teach through modelling. Easy to understand.
Best Technical CZcams channel. Thanks so much for the good job.
## The process through which the dissolved gases are removed from water is called the “Deaeration Process”. The equipment, which is used in this method, is called “Deaerator“.
# Why do we use deaerators?…
The Deaerator (DA) tank uses steam to preheat boiler feedwater to a temp. at which dissolved O2 & CO2 will become separated from the feedwater before it is pumped to the boiler. The purpose is to protect the boiler and steam/condensate piping from corrosion that would be present when the water evaporates into steam. An additional benefit is that the number of chemicals used to treat the boiler water can be reduced.
#water #watertreatment #saftey #boilers #explotion #hazard #plant #construction #construction
techproces.com/deaeration-process/
Excellent video and amazing 3D models.
Excellent learning tool. While the units I’m on are bit more prehistoric than this, the idea is still the same. Thank you!
Very good explanation. Really good work on the 3d model. I came across boilers many times, during my academics but never understood it properly. After watching this video, it has helped me clear all my doubts. Thank You.
Great to hear!
Thanks for videos very much good for me as beginner as plant mechanic.god bless
Thank you very much. This video helped me a lot.
Incredible videos, thank you!
Thank you sooooo much. Hope for more videos like this!
## The process through which the dissolved gases are removed from water is called the “Deaeration Process”. The equipment, which is used in this method, is called “Deaerator“.
# Why do we use deaerators?…
The Deaerator (DA) tank uses steam to preheat boiler feedwater to a temp. at which dissolved O2 & CO2 will become separated from the feedwater before it is pumped to the boiler. The purpose is to protect the boiler and steam/condensate piping from corrosion that would be present when the water evaporates into steam. An additional benefit is that the number of chemicals used to treat the boiler water can be reduced.
#water #watertreatment #saftey #boilers #explotion #hazard #plant #construction #construction
techproces.com/deaeration-process/
What en Explanations. Hatts Off!!!!!
Great Videos! I'm learning a lot. Hope for more videos like this!
no, Im falling asleep
Very good video presentation. Thank you .
Awesome content. basics cleared. thanks a lot
Very useful for beginners ......great work by saVRee 3D
amazing illustration
Incredible! This is what I thought I'd never see... now I have! Thank you.
Best video I've seen so far
Amazing videos and exceptional quality! Thank you!
Good vedio nice explain
Very informative and simple way of explanation make it more interesting .....Thank for the efforts
thankyou verymuch, that explaination are so great. thankyou
I have been in the industry since 2004 till present (2023), operating various types of boilers, from solid fuel, liquid fuel and currently gas fuel. In Msia, one need to have competency given by authorities to be in charge of the boiler, which is 2nd Grade Steam Engr and 1st Grade Steam Engr. 1st Grade is the highest.
Being a 1st Grade Steam Engr, I found the information shared in this video is accurate and 100% correct!...
Thanks for sharing this to all of us...
Thanks for watching and for the honest feedback.
Absolutely incredible model and explanation! Thank you guys so much
You're welcome
amazing explanation!
Awesome presentation
Very educational thank you. This will help enormously with me trying to build a steam powered car
Well done!
nice work sir very impressive.. kindly share a video on sea water desalination plant, maintenance , startup,shutdown
Incredible video, well done guys
Glad you enjoyed it!
Beautifully Explained
amazing model, very well done and detailed.
Thank you very much!
Thanks for your great work sir.
I am watching your videos and loving the method sir ❤ Thanku
Thank u for such an informative video
Waooo. It just made my thoughts clear as I never understand boiler working in such a clear manner. Thank you so much for making and sharing auch video
You're welcome
Thankyou so much. Such a great explanation!
Glad you enjoyed it!
Thank you for the good clips. Can you ask me for information about the above application software?
Very nice and informative video for Engineers
Great Video ,Thanks Lot ..
thank you very much
Super nice video. Amazing
Excellent work thanks
Thank you for this. I suggest a detailed discussion on Ignition System as well. Thanks again
## The process through which the dissolved gases are removed from water is called the “Deaeration Process”. The equipment, which is used in this method, is called “Deaerator“.
# Why do we use deaerators?…
The Deaerator (DA) tank uses steam to preheat boiler feedwater to a temp. at which dissolved O2 & CO2 will become separated from the feedwater before it is pumped to the boiler. The purpose is to protect the boiler and steam/condensate piping from corrosion that would be present when the water evaporates into steam. An additional benefit is that the number of chemicals used to treat the boiler water can be reduced.
#water #watertreatment #saftey #boilers #explotion #hazard #plant #construction #construction
techproces.com/deaeration-process/
What APC systems are installed on the boiler and do you know the back-work requirement to run the APC?
Very useful video sir...👍
excellent work!! A few small remarks; in the gas phase of water, be it saturated or dry steam, water is always going to be in the form of water molecules. when the steam is wet, then we have tiny water droplets in there. But, the molecules are still there. So to state that we have to get rid of the water molecules is incorrect. We have to get rid of tiny water droplets (so, many millions or billions of water molecules coagulated together.)
Thanks a lot
You made easy to understand...one doubt the secondary air which goes to windbox do that being heat exchange ?if yes from where Bcz primary air get heat exchange with APH what about secondary air
Do you happen to have HRSG design and construction vids ? Tnx in advance.
a big thank you
A big 'you're welcome'!
Amazing
Really interesting. One question regarding combustion control/safety. There is a flow of vaporized fuel AND hot air coming from the pulverizers. How is a backfire prevented, either from the fire travelling from the combustion chamber into the nozzles or from an ignition source within the pulverizers. I could for example imagine, that pulverizing is quiet violent, so there might be sparks, electrostatic discharges or simply parts that get hot enough
I am looking for more advanced information about steam engines.
Can anyone post a link?
Very nice thanks
Hello sir, great video! Can you also make a water tube boiler for an LNG Carrier? Thanks!
worked on similar design boiler, except we fire bunker "c" fuel oil. we had 2x 600mw units
Thanks!
Thanks for the great video. Could you work with us as a consultant for constructing a water tube boiler for 3Mwe production? We need some drawings and some advice /guidance. We already have experience in smaller projects.
Interesting. Never worked on a coal power boiler. I only had the chance to work on a bark burning one.
Great stff saVree
A great video, I'm working at a coal-fired power plant, thank you so much.
Glad it helped
1 000 000$ Man! Thx
You're welcome
Nice
I’ve seen that style of pulverized at a drywall/gypsum board factory.
Valeu!
Are these pipes usually insulated?
Dry steam is still water molecules (H2O), but they are all separate rather than sticking to each other to form droplets.
Super video ¡¡¡¡¡¡
Thank you very much!
As a welder I have replaced repaired the air box they are made of hard stainless steel the powdered coal is very abrasive
Please introduce desuperheater valve in design.
Kindly provide working of coal handling plant in thermal power station
The best video ever explain about water tube boiler because of this video i know better about water tube boiler even i work on fire tube boiler
Cool!
Great Video but ther might be a small mistake, 15:12 steam is still made out of water molecules. When you start with pure water molecules, they dont react to form another molekule (mostly, it might be that 2 H2O = OH + H3O equilibrium changes a bit). Water molecules is maby a field specific term, but as far as I understand it, is what you mean, that we can only see the liquid phased dropplets suspendet in the gas. The gas is still made out of 100% water molecules.
Still great to see the the real struktur, behind the theory.
vary helpful video by u sir. plz start a video on turbine
@@savree-3d first of all i must say thanks to u sir because u reply in a vary short time.
Where is that pulverizer video?
🎯 Key Takeaways for quick navigation:
00:26 *Modelo 3D gratis.*
01:54 *Almacenamiento de carbón.*
03:55 *Quemadores eficientes.*
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What software is used for design?
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Let me see if I have this correct. Steam is an odorless and colorless dry (0 water molecules) gas but in order to get steam, liquid water has to be heated to boiling (212° f/100° c at sea level), changing the liquid state of water to become vapor water. All the white stuff we see rising up from boiling water is visible vapor water commingling with steam but isn't steam. However in order to produce steam, water has to be boiled. So where does steam come from? Are there other ways to get steam aside from boiling water? What happens to steam once it cools below boiling point? Is steam just hot air? Oxygen, nitrogen, carbon dioxide, xenon, neon, helium, hydrogen, all the Nobel gases...now I think about it, aren't all gases colorless? I can't say if they're all odorless (carbon dioxide isn't odorless) but I don't remember ever seeing gases before without the use of (I think it's called a ----->) spectralgraph or by using electricity to excite the gas contained within a glass tube. Acetylene is another stinky gas, man does that stuff smell bad...and so does methane. Give me a minute and I'm sure I can remember some others that reek.
Min. 10:00 GOOD!!!
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Interesting video. I used to work on boilers and this one is fairly similar, except for the placement of some items, like the steam drum, reheaters, and superheaters.
Feed water was also not as high pressure as this case, but every boiler is different.
I really wished you would have talked about steam pressures in this video. For example 850 primary, then 450, 165, 75 coming off the generator for ancillary systems.
I spent years working on coal fired boilers all over the Western United States. Glad I am retired now.
This is a good illustration, but having worked in powerplants for 30 years there are some design flaws that do not add up or would make this boiler hard to operate.
The narrator did not mention the function of the coal feeder which is the equipment between the silos and pulverizers. They control the flow of coal to the mils.
The burner arrangement is not of any boiler I have ever seen. Normally a pulverizer feeds one or two rows of burners along the width of the furnace to distribute the heat evenly. This model has burners arranged in columns which will cause localized heating on one side or the other. Some Riley boilers have burners in front and rear fed from the same pulverizer but heat the furnace evenly across.
The secondary air ducts come in on the sides so that both forced draft fans can provide combustion air to both the front or rear windbox. In this model if one FD fan is not in service only one windbox is fed air from that fan.
And lastly, there is normally no flue gas flow through the penthouse which is the roof section on the top. That area is where most of your headers and desuperheaters are located and no gas flows around them to protect them from direct heat.
Other than that, the explanations are very good.
This design is pretty much the same as my old local coal plant, and most UK plants from the late 60s/70s. Look up on CZcams for "Didcot Power Station 500 MW boiler just warming up" there's a video of inside the boiler and it matches this. Actually most UK plants had 48 burners arranged in banks of 24 each side.
@@edwardbyard6540 Thanks for the info. Yes, that B&W boiler has horizontal burner elevations which allows warming the boiler evenly as I mentioned. If you look at the model, the coal conduits from the pulverizers feed burners in columns, not rows... that is not what I have ever seen in wall fired B&W boilers, Foster Wheeler, Riley, or even tangential fired CE boilers.
I'll leave it at that, no harm done as it serves it's purpose of educating. Cheers!
Water tube boilers are very complicated as compared to fire tube boilers.
Type boiler water tube
Bummer. I'm 6 months late. Model is no longer available 😢
Thank god I work with a industrial natural gas boiler and not a coal boiler.