Coal Upgrading: Difference between revisions
Jump to navigation
Jump to search
m (Minor Text Formatting Fix) |
(Added some more information) |
||
| Line 12: | Line 12: | ||
**Quote: | **Quote: | ||
***"[[Ultra Clean Coal]] (UCC) is defined as a coal that is washed using conventional methods, ground into fine particles, and then chemically treated to remove ash so that the final ash content of the coal is less than 1%. UCC has various potential uses, such as serving as the carbon source for the silicon smelting industry [2]; replacing oil for the production of aromatic chemicals and materials [2]; producing a coal slurry fuel that can be used to replace oil combustion in diesel engines [3], [4], [5], [6], [7]; producing activated carbon used in filters for water and air purification; producing carbon fiber that is an extremely strong reinforcement material used in construction [8]; fabricating carbon anodes to replace petroleum coke [2]; and serving as the fuel for advanced power generation technologies, such as direct firing in gas turbines [9]." | ***"[[Ultra Clean Coal]] (UCC) is defined as a coal that is washed using conventional methods, ground into fine particles, and then chemically treated to remove ash so that the final ash content of the coal is less than 1%. UCC has various potential uses, such as serving as the carbon source for the silicon smelting industry [2]; replacing oil for the production of aromatic chemicals and materials [2]; producing a coal slurry fuel that can be used to replace oil combustion in diesel engines [3], [4], [5], [6], [7]; producing activated carbon used in filters for water and air purification; producing carbon fiber that is an extremely strong reinforcement material used in construction [8]; fabricating carbon anodes to replace petroleum coke [2]; and serving as the fuel for advanced power generation technologies, such as direct firing in gas turbines [9]." | ||
*[https://www.tandfonline.com/doi/abs/10.1080/15567036.2023.2268563 A 2023 Study Titled "Study on preparation of ultra-clean coal from bituminous coal using the ionic liquid extraction" ] | |||
*[https://www.sciencedirect.com/science/article/abs/pii/S0378382011002153 A 2011 Study Titled "Generation of ultra-clean coal from Victorian brown coal — Sequential and single leaching at room temperature to elucidate the elution of individual inorganic elements" ] | |||
*[https://www.mdpi.com/2227-9717/10/12/2736 A 2022 Study Titled "Production of Ultra-Clean Coal by the Combined Method of Grinding and Collector Gasification Flotation" ] | |||
**Interesting terms that lead to other rabbit holes: | |||
***"[[Collector Gasification Flotation Method]]" (Essentially adapting [[Froth Flotation]] to Coal Upgrading with various Solvents and [[Wetting Agents]] ) | |||
***In digging i found the term [[coal gasification fine slag]] from [https://www.sciencedirect.com/science/article/abs/pii/S0016236122014065 This 2022 Paper Titled "Study on the mechanism of flotation of coal gasification fine slag reinforced with naphthenic acids" = | |||
==[[Briquetting]] / [[Pelletization]]== | ==[[Briquetting]] / [[Pelletization]]== | ||
Revision as of 21:47, 22 February 2024
Basics
- A Process by which Lower Grade Coals are "Upgraded" to a Product Functionally Identical to Higher Grade Coals
- Can be done via washing, drying/pyrolysis, and briquetting/pelletising
- The main goal is to reduce Ash Content and increase the Heating Value
- Due to Fossil Fuels obviously not being part of OSE's Strategy, this page is intended as a place to have information on this technolgy placed for reference in developing the Charcoal Fuels Workflow especially in regards to Ultra Pure Charcoal Fuel
Methods
Washing
- A Patent Titled "Process for preparing ultra-pure coal by using acid-alkali method" (Seems to be lab scale though? Odd and some potential translation issues, but interesting nonetheless)
- A 2001 Study Titled "The production of ultra clean coal by chemical demineralisation" (Uses Nitric Acid ...after Aqueous Hydrofluoric Acid So nasty stuff, did get from sh content of approximately 7.9% by weight and a sulphur content of 2.6% by weight to an ash content of 0.6% and Sulfur Content of 1.4%
- A 2020 Study Titled "Ultra clean coal production by microwave irradiation pretreatment and sequential leaching with HF followed by HNO3" (Initial ash contents from two sites of 8.31% and 10.36%, respectively to 0.39% and 0.69%)
- Quote:
- "Ultra Clean Coal (UCC) is defined as a coal that is washed using conventional methods, ground into fine particles, and then chemically treated to remove ash so that the final ash content of the coal is less than 1%. UCC has various potential uses, such as serving as the carbon source for the silicon smelting industry [2]; replacing oil for the production of aromatic chemicals and materials [2]; producing a coal slurry fuel that can be used to replace oil combustion in diesel engines [3], [4], [5], [6], [7]; producing activated carbon used in filters for water and air purification; producing carbon fiber that is an extremely strong reinforcement material used in construction [8]; fabricating carbon anodes to replace petroleum coke [2]; and serving as the fuel for advanced power generation technologies, such as direct firing in gas turbines [9]."
- Quote:
- A 2023 Study Titled "Study on preparation of ultra-clean coal from bituminous coal using the ionic liquid extraction"
- A 2011 Study Titled "Generation of ultra-clean coal from Victorian brown coal — Sequential and single leaching at room temperature to elucidate the elution of individual inorganic elements"
- A 2022 Study Titled "Production of Ultra-Clean Coal by the Combined Method of Grinding and Collector Gasification Flotation"
- Interesting terms that lead to other rabbit holes:
- "Collector Gasification Flotation Method" (Essentially adapting Froth Flotation to Coal Upgrading with various Solvents and Wetting Agents )
- In digging i found the term coal gasification fine slag from [https://www.sciencedirect.com/science/article/abs/pii/S0016236122014065 This 2022 Paper Titled "Study on the mechanism of flotation of coal gasification fine slag reinforced with naphthenic acids" =
- Interesting terms that lead to other rabbit holes:
Briquetting / Pelletization
- An Article by "Mining Review" Titled "Coal fines waste pelletising technology launched"
- A Product Page by ACAN on their Carbon Black Briquetting Technology Titled "BRIQUETTE MAKING OF CARBON BLACK FROM PYROLYSIS PROCESS OF SCRAP TYRE"
- Patent US5916826A - 1997 Patent Titled "Pelletizing and briquetting of coal fines using binders produced by liquefaction of biomass" (Expired Already)
- A 2017 International Mining Article Titled "CoalTech completes its first economically viable industrial plant using coal pelletising technology"
- A 2018 Paper Titled "Value addition of coal fines and sawdust to briquettes using molasses as a binder" (Under a Creative Commons License so that's neat
- A 2020 Paper Titled "Influence of briquetting on thermal behavior of bituminous coal oxidized during storage"
Internal Links
External Links
- The Wikipedia Page on Refined Coal
- A 2014 Study Titled "The Technical Analysis on Upgrade and Coupling of Low-Quality Coal"
- A 2016 Study Featured in Volume 158 of "Fuel Processing Technology" Titled "A Review on Chemical Upgrading of Coal: Production Processes, Potential Applications and Recent Developments"
- A 2002 Report Titled "COAL UPGRADING TO REDUCE CO2 EMISSIONS"
- A 2020 Study Titled "A study of coal upgrading in briquette making based on briquette characteristics using heated mechanical methods"