How Flue Gas Desulfurization (FGD) Works
Learn how flue gas desulfurization (FGD) works! We use an interactive 3D model to show you all of a flue gas desulfurizer’s main components and how it works.
This video focuses on the wet (not dry) method of desulphurisation.
Note that desulfurization (American English) may also be spelt desulphurisation (British English), but its meaning is the same!
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Check out our playlists!
Introduction to Boilers and Power Generation
https://www.youtube.com/playlist?list=PLjoH8XiKuSWl80WhqSG2cSrdvbUaIoGxq
Introduction to Heat Exchangers
https://www.youtube.com/playlist?list=PLjoH8XiKuSWlcC-b45wzo4bczDid06-1s
Introduction to Cooling Towers
https://www.youtube.com/playlist?list=PLjoH8XiKuSWnpbf6xaC3C8h1dC4mK2Zs3
Introduction to Valves
https://www.youtube.com/playlist?list=PLjoH8XiKuSWlZA8IMStMGEbtMHx7WrU5s
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https://courses.savree.com/pages/youtube-special-offer
And don't forget your COUPON CODE (use it at checkout!)!
25%-off-youtube
Hope to see you on a course soon!
**********
You can read more about flue gas desulphurisation (FGD) in our 3D technical encyclopaedia:
https://savree.com/en/3d-model-library/
Want to use this 3D model in your training course or lesson? Simply join saVRee!
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Introduction
Fossil fuel power stations and other industrial plants that burn fossil fuels, require some form of flue gas cleaning in order to comply with ever more stringent environmental legislation. There are several parts to a flue gas cleaning system, these may include electrostatic precipitators (ESP), bag houses, forced draft fans, selective catalytic reduction (SCR) equipment and flue gas desulphurisation equipment.
Flue gas desulphurisation (FGD), is a process that removes sulphur oxides (SOx) from an exhaust gas stream. The most common sulphur oxides are sulphur dioxides (SO2) (note that sulphur is also spelt sulfur).
Chemical reactions between an alkaline reagent (lime, limestone, ammonia etc.) and the flue gas, convert the sulphur dioxide gas into calcium sulphite. Calcium sulphite can then be oxidised to form calcium sulphate.
How it Works
An alkaline reagent slurry is pumped from the base of the absorber tower to spray headers. The slurry is sprayed into the absorber tower through spray nozzles, and falls due to gravity down to the tower basin (effluent holding tank area).
Flue gas enters the tower and flows upwards. As it flows upwards, it comes into direct contact with the alkaline reagent slurry. The slurry converts the sulphur dioxide gas into a calcium based solid waste (calcium sulphite or calcium sulphate).
Calcium sulphite is represented by the chemical notation of CaSO3; calcium sulphate is CaSO4.
Both calcium sulphite and sulphate can be sold as by-products. It is possible to oxidise the calcium sulphite in the slurry using compressed air, this then yields calcium sulphate. Another name for calcium sulphate is ‘gypsum’, and it can be used for many applications, but its use in wallboard is the most common.
Gypsum is extracted and sold, usually by passing through a thickener (similar to a primary clarifier design), hydro cyclone, vacuum filters, or a combination of all these components.
A mist eliminator is used to reduce the amount of carry over from the absorber tower to the exhaust stack.
**********
Want to learn more about equipment in the power generation industry? Then check out these videos lessons!
Water Tube Boiler
https://youtu.be/mHcZdknYtkY
Electrical Transformer
https://youtu.be/3osmO4FQ2Yg
Natural Draft Cooling Tower
https://youtu.be/Gouq8epjX5Y
Coal Pulveriser
https://youtu.be/UqOkLiO_8Yo
Fire Tube Boiler
https://youtu.be/CBlOJoXUyIk
#saVRee #PowerEngineering #IndustrialEngineering
Видео How Flue Gas Desulfurization (FGD) Works канала saVRee 3D
This video focuses on the wet (not dry) method of desulphurisation.
Note that desulfurization (American English) may also be spelt desulphurisation (British English), but its meaning is the same!
***********
Check out our playlists!
Introduction to Boilers and Power Generation
https://www.youtube.com/playlist?list=PLjoH8XiKuSWl80WhqSG2cSrdvbUaIoGxq
Introduction to Heat Exchangers
https://www.youtube.com/playlist?list=PLjoH8XiKuSWlcC-b45wzo4bczDid06-1s
Introduction to Cooling Towers
https://www.youtube.com/playlist?list=PLjoH8XiKuSWnpbf6xaC3C8h1dC4mK2Zs3
Introduction to Valves
https://www.youtube.com/playlist?list=PLjoH8XiKuSWlZA8IMStMGEbtMHx7WrU5s
**********
Check out some of our FREE engineering Apps!
https://play.google.com/store/apps/developer?id=saVRee
**********
Want more high-quality educational engineering videos? Click on the link below to view our online video courses. Including an Introduction to Steam course! An Introduction to Fire Tube boilers and Introduction to Water Tube Boilers course is coming soon!
https://courses.savree.com/pages/youtube-special-offer
And don't forget your COUPON CODE (use it at checkout!)!
25%-off-youtube
Hope to see you on a course soon!
**********
You can read more about flue gas desulphurisation (FGD) in our 3D technical encyclopaedia:
https://savree.com/en/3d-model-library/
Want to use this 3D model in your training course or lesson? Simply join saVRee!
**********
Introduction
Fossil fuel power stations and other industrial plants that burn fossil fuels, require some form of flue gas cleaning in order to comply with ever more stringent environmental legislation. There are several parts to a flue gas cleaning system, these may include electrostatic precipitators (ESP), bag houses, forced draft fans, selective catalytic reduction (SCR) equipment and flue gas desulphurisation equipment.
Flue gas desulphurisation (FGD), is a process that removes sulphur oxides (SOx) from an exhaust gas stream. The most common sulphur oxides are sulphur dioxides (SO2) (note that sulphur is also spelt sulfur).
Chemical reactions between an alkaline reagent (lime, limestone, ammonia etc.) and the flue gas, convert the sulphur dioxide gas into calcium sulphite. Calcium sulphite can then be oxidised to form calcium sulphate.
How it Works
An alkaline reagent slurry is pumped from the base of the absorber tower to spray headers. The slurry is sprayed into the absorber tower through spray nozzles, and falls due to gravity down to the tower basin (effluent holding tank area).
Flue gas enters the tower and flows upwards. As it flows upwards, it comes into direct contact with the alkaline reagent slurry. The slurry converts the sulphur dioxide gas into a calcium based solid waste (calcium sulphite or calcium sulphate).
Calcium sulphite is represented by the chemical notation of CaSO3; calcium sulphate is CaSO4.
Both calcium sulphite and sulphate can be sold as by-products. It is possible to oxidise the calcium sulphite in the slurry using compressed air, this then yields calcium sulphate. Another name for calcium sulphate is ‘gypsum’, and it can be used for many applications, but its use in wallboard is the most common.
Gypsum is extracted and sold, usually by passing through a thickener (similar to a primary clarifier design), hydro cyclone, vacuum filters, or a combination of all these components.
A mist eliminator is used to reduce the amount of carry over from the absorber tower to the exhaust stack.
**********
Want to learn more about equipment in the power generation industry? Then check out these videos lessons!
Water Tube Boiler
https://youtu.be/mHcZdknYtkY
Electrical Transformer
https://youtu.be/3osmO4FQ2Yg
Natural Draft Cooling Tower
https://youtu.be/Gouq8epjX5Y
Coal Pulveriser
https://youtu.be/UqOkLiO_8Yo
Fire Tube Boiler
https://youtu.be/CBlOJoXUyIk
#saVRee #PowerEngineering #IndustrialEngineering
Видео How Flue Gas Desulfurization (FGD) Works канала saVRee 3D
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