C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
202/8
C10B 39/02 (2006.01)
Patent
CA 1245595
ABSTRACT OF THE DISCLOSURE The invention relates to a method for dry cooling coke using the sensible heat which is formed during the dry cooling. According to the invention, a combustible gas which is used as a circulating gas, after leaving the waste gas steam boiler and before entering the coke cooling chamber, is cooled down approximately to coolant temperature in a combined washer cooler thus removing dust therefrom. Further- more, the circulating waste gas leaving the said washer cooler is passed through a cooling unit such as a heat pump like unit before entering the coke-cooling chamber. Adjustment of the calorific value of the combustible gas is effected by feeding nitrogen or cleaned flue gas into the cold circulating gas ahead of the coke dry cooler and/or by feeding air into the hot circulating gas after the dry cooler. Ahead of the dry cooler, excess cold circulating gas is withdrawn and is mixed with the under-grate-firing gas fed to the coke ovens. The excess circulating gas may be withdrawn between the dry cooler and the preheating unit, it may be passed through a waste gas boiler, and mixed with the gas leaving the said preheating unit. The operating temperature may be adjusted by feeding the cooled gas into the duct running from the dry cooler to the said preheating unit.
471353
Altmeyer Wolfgang
Dangullier Wilhelm
Galow Manfred
Teichert Ernst
Tietze Jurgen
Didier Engineering G.m.b.h.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Otto (dr. C.) & Comp. G.m.b.h
Stahlwerke Peine-Salzgitter Ag
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