[Sökformulär] [Info om databasen] [Söktips] [Föregående] [Nästa]

Nr 16 / 22

New Black Liquor Combustion Characteristics III (LIEKKI 2-516)

New Black Liquor Combustion Characteristics III

Datum: 1.3.1996-30.6.1998
Kod: 17611
Institution: Åbo Akademi / Kemisk-tekniska fakulteten (KTF), Förbränningskemiska forskargruppen vid ÅA
Adress: Lemminkäinengatan 14 - 18 B, FIN-20510 Åbo
Tel. +358-2-2154 762
Fax +358-2-2154 780
E-post mforssen@abo.fi
Projektledare: TkD Mikko Hupa, professor (1.3.1996-30.6.1998)
DI Mikael Forssén, (1.3.1996-30.6.1998)
Forskare: TkD Rainer Backman (1.3.1996-30.6.1998)
TkD Bengt-Johan Skrifvars (1.3.1996-30.6.1998)
DI Sonja Enestam (1.3.1996-30.6.1998)
DI Tor Laurén (1.3.1996-30.6.1998)
MSc Radu-Dan Badoi (1.3.1996-30.6.1998)
Typ av forskning: 1 (0=Inom tjänst, 1=Beställd forskning, 2=Samarbetsforskning)
- utvecklingsarbete 100 %
Årsverken: Totalt: 224 månader
Partner: Finnish Recovery Boiler Committee; Ahlstrom Machinery Oy; Kvaerner Pulping Oy
Ämnesord: förbränningsteknik, avfallsgaser, rökgaser, utsläpp, polttotekniikka, jätekaasut, savukaasut, päästöt, förbränning, förgasning, forskningsprogram, combustion, gasification, research programme,

Svenskt abstrakt föreligger tyvärr inte.

The main purposes in the work is to: 1) Compare black liquor combustion characterization results to recovery boiler experiences. 2) Study the mechanisms of sodium release in black liquor combustion and to 3) further develop the combustion characterization measurement methods.In the first part results from laboratory scale black liquor combustion characterization tests developed at Åbo Akademi University have been compared to experiences of fouling at four finnish kraft recovery boilers.Characterisation results showed good agreement with deposit growth measurements and melting properties of collected deposits.The second part studies the release mechanisms of sodium from black liquor char during combustion.Molten sodiumcarbonate reacts with the char carbon and gaseous elemental sodium is formed.Special interest is the effect of in which form the sodium salt (Na2CO3, Na2SO4, Na2S2O3, Na2S and NaCl) is in the liquor.In the third part the laboratory characterisation methods are further developed.The gaseous combustion products are measured with on-line gas-anlayzers (CO2, CO, SO2 and NO) and the signals are mathematically processed (deconvolution).The different combustion stages (pyrolysis, char combustion and inorganic reactions) are identified in the results.

Publikation(er)

1.10.1996 / 18.6.1998