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Showing result 1 - 5 of 45 essays matching the above criteria.

1. 1. Geological 3D Modelling ofthe File Hajdar Quarry, Slite

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Friberg Nils; [2023]
   Keywords : 3D-modelling; Cementa; limestone; resistivity; Gotland; 3D-modellering; Cementa; kalksten; resistivitet; Gotland;

   Abstract : Located on the island of Gotland, Sweden, the File Hajdar limestone quarry is an important locality for domestic cement production. With depositional settings generally related to shallow sea carbonate ramps, the lithologies encountered on File Hajdar range from reef-associated limestone units to more basinal deposition of marls. READ MORE

3. 2. Negative Emission from Electric Arc Furnace using a Combination of Carbon capture and Bio-coal

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Abhijith Namboodiri Kapothanillath; [2023]
   Keywords : EAF; Off-gas handling; CCS; Calcium Looping CaL ; Post-combustion; Waste heat recovery; Bio-coal; Negative emissions; Techno-economic analysis; EAF; Avgasrening; CCS; Calcium Looping CaL ; Efterförbränning; Återvinning av spillvärme; Biokol; Negativa utsläpp; Teknisk-ekonomisk analys;

   Abstract : Steel is one of the most essential metals in the world, and it plays a vital role in various industries. The growing demand for steel has resulted in increased CO2 emissions, with the steel industry contributing to approximately 7% of global emissions of carbon dioxide. READ MORE

4. 3. Desulphurisation of cement flue gases

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Ellen Sjöstrand; [2023]
   Keywords : Flue Gas Desulphurisation; FGD; gypsum; cement;

   Abstract : Flue gas desulphurisation (FGD) is a crucial method to minimise the SO2 emissions from industrial processes. The FGD system utilise an alkaline sorbent to remove SO2 from the flue gases. Calcium in form of limestone is a commonly used sorbent where gypsum is produced asa by-product. READ MORE

5. 4. Groundwater flooding in a Moldovan limestone mine : An investigation into the limestone aquifer in Chisinau andsustainable solutions to mine dewatering

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Erik Tobin; [2022]
   Keywords : groundwater; hydrogeology; limestone; mine; Moldova; Chisinau; grundvatten; hydrogeologi; kalksten; gruva; Moldavien; Chisinau;

   Abstract : This work aimed to investigate the groundwater situation in and around Mina din Chisinau, an underground limestone mine in Chisinau, Moldova, in order to contribute to a sustainable solution to its flooding problem. Work on-site was done including visits inside the mine, to points of hydrogeological relevance to the mine, well inventories/search, and an attempt at an infiltration test. READ MORE

6. 5. Phasing out peat from a co-fired 50 MWth circulating fluidized bed boiler : A theoretical sulfation potential study

   University essay from Umeå universitet/Institutionen för tillämpad fysik och elektronik

   Author : Axel Bergstrand; [2022]
   Keywords : Peat; corrosion; fuel mixture; CFB; circulating fluidized bed; S; alkali chlorides; Sulfur; additives; combustion; fuel design; alkali related corrosion;

   Abstract : The chemical company Perstorp AB has a 50 MWth circulating fluidized bed to supply the production plant with process steam. The fuel mixture used shows a large variation with about 20 different fuel fractions that can be divided into the categories, residue wood chips, sludge, forest fuel, animal waste, industrial residues, and peat. READ MORE