Sökning: "formation process"

Visar resultat 1 - 5 av 2331 avhandlingar innehållade orden formation process.

1. 1. Fuel conversion and ash formation interactions : a thermochemical study on lignocellulosic biomass

   Författare :Anna Strandberg; Markus Broström; Rainer Backman; Christoffer Boman; Maria Zevenhoven; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Char conversion; pyrolysis; devolatilization; ash transformation; biomass; fuel characterization; fuel composition; ash composition; silicate formation; carbonate formation; thermogravimetric analysis; micro-tomography;

   Sammanfattning : Biomass is considered to be CO2 neutral, and to be able to reduce the dependency on fossil fuels the need for expanded and sustainable biomass feedstock is increasing. Ash-related problems are some of the most important aspects of this increasing use of new biomass assortments in thermal energy conversion systems. LÄS MER

3. 2. Gardens in the Wasteland : Christian Formation in Three Swedish Church Plants

   Författare :Björn Asserhed; Joel Halldorf; Stefan Paas; Peter Ward; Avdelningen för religionsvetenskap och teologi Enskilda Högskolan Stockholm; []
   Nyckelord :HUMANIORA; HUMANITIES; Church planting; Christian formation; Secularisation; Practical theology; Situated learning theory; Identity; församlingsplantering; kristen formation; sekularisering; praktisk teologi; situerat lärande; identitet; Practical Theology including Religious Behavioural Sciences; Praktisk teologi med religionsbeteendevetenskap;

   Sammanfattning : Gardens in the Wasteland is an ethnographic study of Christian formation within three Swedish church plants working against a backdrop of advanced secularisation. The thesis analyses the formative practices employed by these church plants with the intention of forming persons towards a lived Christian identity. LÄS MER

4. 3. NOx Formation in Rotary Kilns for Iron Ore Pelletization

   Författare :Rikard Edland; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rotary kiln; combustion chemistry; emissions control; Grate-Kiln process; Nitrogen oxides; NOx formation;

   Sammanfattning : The production of iron ore pellets is often performed in the so-called Grate-Kiln process. The aim of the process is to oxidize the magnetite (Fe3O4) to hematite (Fe2O3) and to sinter the pellets so they can be used in steel manufacturing. LÄS MER

5. 4. NOx formation in iron ore rotary kilns

   Författare :Rikard Edland; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rotary kiln; Grate-Kiln process; emissions control; combustion chemistry; Nitrogen oxides;

   Sammanfattning : Iron ore pellets are often produced using the so-called Grate-Kiln process, which is designed to oxidize the magnetite (Fe3O4) to hematite (Fe2O3) and to sinter the pellets so they can be used in steel manufacturing. The heat required for this process comes from the combustion of a pulverized fuel in a rotary kiln, involving the formation of a jet flame. LÄS MER

7. 5. Phase chemistry in process models for cement clinker and lime production

   Författare :Bodil Hökfors; Rainer Backman; Bo Björkman; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process modelling; phase chemistry; cement clinker; lime; sustainability; CO2; energy;

   Sammanfattning : The goal of the thesis is to evaluate if developed phase chemical process models for cement clinker and lime production processes are reliable to use as predictive tools in understanding the changes when introducing sustainability measures.The thesis describes the development of process simulation models in the application of sustainability measures as well as the evaluation of these models. LÄS MER