Muroran-IT Academic Resources Archive

The pres巴ntpaper gives an information on the design, constru巴tionand result of op8ration of continuous rotary reactor for produ巴tionof organic nitrogeneous fertilizer from peats. The reacting chamber consists of steel cylinder 300 cm long and 30 cm in I.D. a抗告dwith 12 steel leave3 for disturbing at inner wall. The chamber has a suitable inclination and rotates at the rate of 5 r.p.m. to hold the raw materials for enough timョtocontact with ammonia in it. The materials are fed as a powder ground to pass a 12 meョhsieve at the rate of 6 kg an hour through a hopper. The reaction products are remov巴dcontinuously from outlet hole to drop into a re巴eiver. The flow rate of ammo:lIa was 1 cbm per hour concurrently with the raw materials. The peats pretreated by nitri巴 acidgave always products nitrogen content of which were about 9%, but the air-oxidized peats could no七givesuch high nitrogen products.