Sökning: "superheater"

Visar resultat 21 - 24 av 24 avhandlingar innehållade ordet superheater.

1. 21. Co-firing complex biomass in a CFB boiler : ash transformation, corrosion control and materials selection

   Författare :Henrik Hagman; Dan Boström; Rainer Backman; Mats Lundberg; Lars-Erik Åmand; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ash transformation; process control; equilibrium calculations; boiler availability; failures; alloy selection; alloy degradation; vortex finder VF ; service life estimation; sulfation; chloridation; high temperature corrosion; biomass; waste derived fuels; forest residues; RDF; Biomal; slaughterhouse waste; peat; waste wood; industrial waste water treatment sludge; HAD; RSMT; Alloy 253MA; Alloy 310S; Alloy 800H HT; Alloy DS; Alloy 600;

   Sammanfattning : The effects of greenhouse gas net emissions on global warming, stricter legislation on waste handling, and the pursuit of ever cheaper heat- and power production are all important factors driving the introduction of complex fuels in incineration plants. However - without fundamental knowledge regarding ash transformation, corrosion control, and materials selection – this introduction of potentially economically and environmentally beneficial fuels, might instead cause economic loss and environmentally adverse effects. LÄS MER

3. 22. Alkali-containing aerosol particles-release during biomass combustion and ambient air concentrations

   Författare :Borka Kovacevik; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aerosol; alkali metal; sodium; potassium; pyrolysis; combustion; biomass burning.;

   Sammanfattning : Air pollution in the form of particles has considerable influence on human health and climate. Atmospheric aerosol particles arise from direct emissions of particles and from the conversion of certain gases to particles in the atmosphere. LÄS MER

4. 23. High-Temperature Corrosion in Waste-Fired Boilers: Insights into material selection for fluidized bed heat exchangers and the corrosivity of PbCl2

   Författare :Hampus Lindmark; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Water Walls; High-Temperature Corrosion; Superheaters; PbCl2;

   Sammanfattning : The replacement of fossil fuels with waste-derived fuels for heat and electricity production has gained significant momentum in the European Union (EU), especially in the wake of the implementation of stricter waste management directives and the pursuit of ambitious climate goals. Combustion of waste, however, leads to the formation of a complex and highly corrosive flue gas that cause severe corrosion on important boiler equipment. LÄS MER

5. 24. Fouling in biomass fired boilers

   Författare :Jan Sandberg; Rebei Bel Fdhila; Erik Dahlqvist; Anders Nordin; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fouling; deposit; boiler; biomass; simulations; Thermal energy engineering; Termisk energiteknik; Energy- and Environmental Engineering; energi- och miljöteknik;

   Sammanfattning : In order to reduce the discharge of the greenhouse gas CO2, the use of biomass is nowadays promoted as fuel in boilers. Compared to boilers fired with coal and oil the biomass-fired boilers have more complications related to both fouling and corrosion on the heat transfer surfaces. LÄS MER