How Flue Gas Desulfurization (FGD) Works скачать в хорошем качестве

How Flue Gas Desulfurization (FGD) Works

Want to LEARN about engineering with videos like this one? Then visit: https://courses.savree.com/ Want to TEACH/INSTRUCT with the 3D models shown in this video? Then visit: https://savree.com/en/teach-engineering Want to TRAIN your workforce or employees using videos like this one? Then visit: https://savree.com/en/enterprise-engi... And don't forget to sign-up to our newsletter for free engineering Handbooks, Videos, and Courses. https://courses.savree.com/pages/emai...   ****************************************************************** 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! Like this video? Then check out our other videos! 🚢 Marine Diesel Two Stroke Engine - How it Works! -    • Marine Diesel Two Stroke Engine - How it W...   🚢 Ship Parts and Terminology Explained! -    • Ship Parts and Terminology Explained! (saV...   ⚙️How Deaerators Work! -    • How Deaerators Work (Engineering)   ⚙️How Shell and Tube Heat Exchangers Work! -    • Shell and Tube Heat Exchangers Explained! ...   ⚙️How Power Grids Work! -    • The Electrical Grid and Electricity Supply...   ⚙️How Watertube Boilers Work! -    • The Electrical Grid and Electricity Supply...   ⚙️How Dams Work (Hydro Dams)! -    • How Dams Work (Hydro Dams)   💡Control Valve Types (Gate Valve, Globe Valve etc.)! -    • Shell and Tube Heat Exchangers Explained! ...   💡Transformer Parts and Functions! -    • Transformer Parts and Functions   💡Plate Heat Exchangers Explained! -    • Видео   📚Want to learn more about engineering? Then join saVRee to access over 45 hours of engineering video courses! New courses every month! https://courses.savree.com/ Hope to see you on a course soon! 👋 🏫Want to use the 3D model in this video to present, instruct, or teach? Simply join saVRee! We have over 400 engineering models that will make your life a lot easier! https://savree.com/ 📱Check out our socials! https://linktr.ee/savree 📖You can learn more about engineering in our technical encyclopedia: https://savree.com/en/encyclopedia ▶️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. #saVRee_Nuggets, #saVRee