FIELD: chemical equipment. SUBSTANCE: housing of the apparatus is communicated with systems for a gas and granular polymer supply and removal. The housing has the form of a tore. Within the tore a flexible sleeve is positioned with its ends attached to the walls. A local narrowing is formed in the housing between the ends of the flexible sleeve. An additional tore is set up in the narrowing. EFFECT: intensification of the process through preventing formation of dead areas. 1 dwg
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