Taiheiyo Cement Corporation

Taiheiyo Engineering Corporation

Naoki Ueno

Yasushi Yamamoto

Takayuki Suzuki

Hirofumi Mori

Shinichiro Saito

Soichiro Okamura

Mitsuaki Murata

Kanzaburo Sutoh

Hiroyuki Takano

Yoshihito Izawa

Hiroshi Harada

Kouji Kamada

Kazushi Izumi

Takayuki Kimura

Provided is cement burning apparatus 1 comprising a dryerfor drying high-water-content organic waste of which water content is 40 mass percent or more, in which combustion gas extracted from outlet portions or ceiling, portions of preheater cyclonesA toD of a cement kilnis fed to the dryer. As the dryer, a grinding-type flash dryer, which directly contacts the combustion gas G with the high-water-content organic waste W while grinding it, can be used. In addition, the apparatusfurther comprises a coarse powder separatorfor separating coarse powder from the combustion gas extracted from the range described above, and the combustion gas G from which dust is separated by the coarse powder separatorcan be fed to the dryer, and the dust concentration of the gas fed to the dryermay be adjusted to 0.05kg/Nmor more and 0.35kg/Nmor less.

Cement burning apparatus and method of drying high-water-content organic waste

A cement kiln chlorine/sulfur bypass system wherein the equipment cost is suppressed and the sulfur included in a combustion gas bled from a cement kiln is separated and effectively utilized. The cement kiln chlorine/sulfur bypass system comprises an air bleed means for bleeding a kiln exhaust gas passage, which runs from the end of the cement kiln to a bottom cyclone, of a part of the combustion gas, a separating means for separating dust in the gas bled by the air bleed means into coarse particles and fine particles, and a wet dust collector for collecting dust from the gas containing the fine particles separated by the separating means. The separating means is preferably a classifier in which the cut size is changeable. The wet dust collector is preferably a mixing scrubber. The mixing scrubber preferably comprises a circulating liquid tank to which dust slurry collected by the mixing scrubber is supplied and a circulating system by which a part of the dust slurry in the circulating liquid tank is returned to the mixing scrubber.

Cement kiln chlorine/sulfur bypass system

Method of processing kiln exhaust gases by chlorine bypass system and

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Saeki, Japan

Naoki Ueno