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2. 发明公开

EP2739711A2 PROCEDURE AND EQUIPMENT FOR THE PRODUCTION OF SOLID FUEL FROM WASTEWATER SLUDGE 有权
标题翻译：方法和装置固体燃料的污水淤泥研制
公开(公告)号：EP2739711A2
公开(公告)日：2014-06-11
申请号：EP12787067.3
申请日：2012-07-31
申请人： Vereckey, István , Ifj. Vereckey, István , Bognár, Béla , Ercsey, László
发明人： Vereckey, István , Ifj. Vereckey, István , Bognár, Béla , Ercsey, László
IPC分类号： C10L5/08 , C10L5/28 , C10L5/46 , C10L5/36 , C02F11/12
CPC分类号： C10L5/48 , C02F11/121 , C02F11/122 , C02F11/127 , C02F11/18 , C10L5/08 , C10L5/28 , C10L5/363 , C10L5/46 , Y02E50/10 , Y02E50/30
摘要： The subject of the invention relates to the production of solid fuel from wastewater sludge, during which the wastewater sludge containing 2-8% dry material is first subjected to mechanical water removal, during which the absorption water is removed and we produce wastewater sludge with a dry material content of at least 25-30%. The significant proportion of the remaining capillary water, favourably at least half of it, is removed by an accelerated evaporation process, drying. The essence of the procedure is that we pre-dry the wastewater sludge containing at least 25-30% dry material using the heat of the flue gas of the burning equipment operated by us to a dry material content of 50-55%, we extract the steam created and gases released during pre-drying, filtering them if necessary and utilise them by returning them to the burning equipment. We pelletize the wastewater sludge containing 50-55% dry material at a high pressure of, favourably, 800-900 bar, then we perform final drying of the pellet product created in this way to a dry material content of at least 80-85% by making further use of the heat of the flue gas of the burning equipment operated by us. We use a part of the solid pellet final product, favourably at least 30-50% of it as fuel in the burning equipment operated by us. A further subject of the invention relates to equipment for the production of solid fuel from wastewater sludge, which is connected to a mechanical dehydration unit (2) for the feeding of the wastewater sludge (1). The output of this is connected to a final dryer (5) through a pre- dryer (3) and pelletizer extruder (4). Furthermore it contains burning equipment (6) connected to the pre-dryer (3) and final dryer (5). The equipment is set up in such a way that the pre- dryer (3) is a double-walled drum, and there is a spiral-shaped mixing blade fixed inside this drum. The final dryer (5) is fitted with stainless steel bands, and the flue gas output (61) of the burning equipment (6) runs between the steel bands via a heat exchanger (62). The forced- flow air extraction (50) of the final dryer (5) is connected to the input (34) between the two walls of the double-walled drum of the pre-dryer (3), the suction connector (35) of the drum is connected with the combustion chamber of the burning equipment (6), favourably through a filter (64). Furthermore, the output (51) of the final dryer (5) at the end of the steel bands is connected to the burning equipment (6) through the fuel feeder (65).
摘要翻译：过程用于从废水污泥生产固体燃料的，和设备适合于进行其制造。

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