JPH0532100B

• Main Authors: HARA HIROICHI, ONO TAKEO, NAKAMURA MUNEKAZU, SUZUKI MASAYUKI
• Format: Patent
• Language: English
• Published: 14.05.1993
• Subjects: APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PAPER-MAKING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF CELLULOSE; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; TEXTILES; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PURPOSE:To improve gas-liquid-solid contact, by packing granular activated carbon wherein the volume of fine pores with a pore size of 100Angstrom or more is 0.25cc/g or more, the occupying ratio thereof to the total volume is 35% or more and the average particle size is 0.2-4mm. CONSTITUTION:Granular activated carbon, wherein the volume of fine pores with a pore size of 100Angstrom or more is 0.25cc/g or more, the occupying ratio of said fine pores to the total volume is 35% or more and an average particle size is 0.2-4mm, is prepared from a stock material such as coconut husk or coal. An aqueous solution containing sulfide is contacted with the granular activated carbon in the reaction region of the fixed bed packed with said activated carbon under such a condition that contact reaction temp. is 50-100 deg.C, reaction pressure is 0-10kg/cm G and an air or oxygen/liquid ratio is 10-500Nl/l to perform redox treatment. A liquid supply amount or wt.-based space velocity can be appropriately selected corresponding to the activity of a catalyst, a reaction condition or the composition or amount of an objective reaction product.