Low-energy-consumption sludge thermal drying system

• Main Authors: DENG WENYI, CHEN GUANG, ZHOU PIREN, JIANG RUI, JI HONGXIAN, PAN WEI, SU YAXIN
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2022
• Subjects: BLASTING; CHEMISTRY; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WEAPONS

The utility model discloses a low-energy-consumption sludge thermal drying system which comprises a thermal drying machine, a vacuum pre-drying machine, a first-stage sludge preheater, a second-stage sludge preheater, a first-stage drying tail gas heat exchanger, a second-stage drying tail gas heat exchanger, a vacuum pump, a circulating water system and the like. Wherein the vacuum pre-drying machine, the primary/secondary sludge preheater and the tail gas heat exchanger can fully utilize the waste heat of the drying system, and the water content of the sludge is reduced by more than 50% through the vacuum pre-drying machine, so that the energy-saving rate of the thermal drying of the sludge reaches more than 50%. The system can be used for energy-saving transformation or new system construction of an existing thermal drying machine, the energy consumption of the thermal drying machine is greatly reduced, and the system has a wide application prospect. 本实用新型公开了一种低能耗污泥热力干化系统，其包括热力干化机、真空预干化机、一级和二级污泥预热器、一级和二级干化