HIGHLY ACTIVATED ACTIVE COKE POWDER AND MANUFACTURING METHOD THEREOF

• Main Authors: SHIIYA MITSUAKI, HIRABAYASHI KOYO, TSUBOYA HISAO, HORIKAWA YUJI, SOTOOKA MASAO, KAMIYA KAZUNORI, NISHIYAMA HIROYASU
• Format: Patent
• Language: English
• Published: 07.10.2003
• Edition: 7
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide an inexpensive, highly active coke powder capable of efficiently adsorbing dioxins in a waste gas for detoxification and to provide a manufacturing method thereof. SOLUTION: The highly activated active coke powder is an abrasion powdery material separated from a regenerated active coke granular material highly activated by the adsorption and heat desorption of sulfur oxide in a dry stack gas desulfurization process, has 10-15 μm average particle diameter and is controlled so that the content of the powder having 0.3-4 μm particle diameter is 10-25% of the total. The method of manufacturing the highly activated active coke powder is performed by: taking out an active coke granular material on which sulfur oxide or the like is adsorbed in an adsorption tower in the dry stack gas desulfurization process for a combustion waste gas containing the sulfur oxide; heating at 300-600°C under an inert gas atmosphere for regeneration; classifying the abrasion powdery material produced in the circulation to the adsorption tower from the active coke granular material; and adjusting the particle size. COPYRIGHT: (C)2004,JPO