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    • 8. 发明公开
    • Drying and desiccating system for plants for producing web-like paper material
    • TrocknungsanordnungfürAnlagen zur Herstellung von Papierbahnen
    • EP2298988A1
    • 2011-03-23
    • EP10176140.1
    • 2010-09-10
    • Novimpianti Drying Technology S.r.l.
    • Saccomano Rocchi Burlamacchi, PietroGiannecchini, Massimo
    • D21F5/20D21F5/04D21F5/18D21F5/02D21F11/14
    • D21F5/20D21F5/028D21F5/044D21F5/181D21F11/14
    • An evaporative drying and desiccating system (10) for a web-like paper material is described. The system (10) comprises at least one first drying device (12), of the pressurised rotating cylinder type fed by steam, on which the web-like paper material to be desiccated is dynamically wound. The cylinder (12) contains a pipe system, for the removal of the condensate, inside it. The system (10) thus comprises at least one second drying device (14), of the hood type, which at least partially covers the cylinder (12) and that comprises at least one first burner (16) capable of producing high temperature dry air. The hood (14) is both capable of blowing the high temperature dry air onto the web-like paper material wound on the cylinder (12), and sucking the moist air released from such a web-like paper material. Positioned along the pipes (26) for releasing the moist air from the hood (14), there are at least one waste heat boiler (34), fed by the moist air released from the web-like paper material and capable of generating high pressure steam for feeding a thermocompressor (36) and a make-up valve (70), which supply steam to the cylinder (12), and at least one auxiliary burner (58), capable of increasing the temperature of the moist air coming from the hood (14). The system (10) is finished off by an exhaust and recirculation fan (32) and by a recirculation and balancing pipe system (72) that, together with the release pipes (26) and through one or more adjustment proportioning valves (64; 38), make it possible to regulate and balance the air flows. It is thus superfluous to use a fuel boiler for feeding the cylinder (12), making it possible moreover, for the thermal conditions of the hood (14) and of the waste heat boiler (34) to be independently regulated, and the amount of energy required by the system (10) is reduced.
    • 描述了一种用于网状纸材料的蒸发干燥和干燥系统(10)。 系统(10)包括由蒸汽供给的加压旋转圆筒的至少一个第一干燥装置(12),待干燥的网状纸材料动态地缠绕在该第一干燥装置上。 气缸(12)包含用于在其内部去除冷凝物的管道系统。 因此,系统(10)包括罩类型的至少一个第二干燥装置(14),其至少部分地覆盖气缸(12),并且包括至少一个能够产生高温干燥空气的第一燃烧器(16) 。 罩(14)能够将高温干燥空气吹送到卷绕在气缸(12)上的网状纸材上,并且吸收从这种网状纸材料释放的湿气。 沿着用于从罩(14)释放潮湿空气的管道(26)定位,至少有一个余热锅炉(34)由从网状纸材料释放的潮湿空气供给并且能够产生高压 用于向蒸汽筒(12)供给蒸汽的热压缩机(36)和补充阀(70)的蒸汽和至少一个辅助燃烧器(58),能够增加来自 罩(14)。 系统(10)由排气和再循环风扇(32)和再循环和平衡管道系统(72)完成,循环和平衡管道系统(72)与释放管(26)一起并通过一个或多个调节配比阀(64; 38 ),可以调节和平衡空气流量。 因此,使用燃料锅炉供给气缸(12)是多余的,因此,可以独立地调节发动机罩(14)和废热锅炉(34)的热条件, 系统(10)所需的能量减少。