METHOD AND PLANT FOR PAPER PROCESSING Russian patent published in 2013 - IPC D21B1/32 D21C5/02 

FIELD: textile, paper.

SUBSTANCE: initially waste paper is sorted, loaded into an autoclave for dispersion and manufacturing of a pulp, dirt, oil, typographic ink and other foreign materials are removed, the mass is impregnated and bleached, afterwards the treated mass arrives to a sieve, where dirt and foreign material are discharged, then floatation, filtration, washing, dehydration and degreasing take place, afterwards final treatment takes place by means of bleaching with discharge of chemicals. For moulding a vacuum system is used, besides, the moulded items are sent into a drying oven, which comprises several layers, at the same time wet items arrive to the oven on top, and dried items come out of the oven at the bottom, and hot air is sent via the oven from the top to the bottom, and its motion is carried out with the help of guide plates along and between layers of the product, at the same time transportation chains in the oven are driven by a motor of the moulding machine, and hot air is supplied from an air heater, at the same time heat energy is supplied due to burning of natural gas in a burner and heat release in the air heater, and fresh air is supplied with the help of two valves with manual control at the inlet side of a recirculation air blower, and for return water supply of the vacuum system a reservoir is used.

EFFECT: invention makes it possible to increase productivity and quality of processed waste paper.

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