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Low-temperature vacuum dewatering and drying method

A low-temperature vacuum and drying technology, applied in chemical instruments and methods, dehydration/drying/concentrated sludge treatment, water/sludge/sewage treatment, etc., can solve the problem of long water removal time, incomplete water removal, etc. question

Inactive Publication Date: 2020-06-12
东莞市汇盈环保科技有限公司
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Problems solved by technology

[0003] In order to overcome the problems of incomplete water removal and long water removal time in the sludge filtration and drying process existing in the prior art, the purpose of the present invention is to provide a low-temperature vacuum dehydration and drying method to improve the dehydration rate of sludge, Shorten sludge filtration and drying time and improve production efficiency

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Embodiment Construction

[0032] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention.

[0033] see Figure 1 to Figure 4 A low-temperature vacuum dehydration drying method of the present invention includes the following equipment: a sludge conditioning system, a filter system 1 and a discharge system, the filter system 1 includes at least one filter plate 11 and a heating plate 12, the filter plate 11 and The heating plate 12 is hinged, and the filter plate 11 and the heating plate 12 are bonded to form a filter chamber 13. The filter plate 11 is provided with a first feed port 111, a first water outlet 112, and a first air outlet 113. The heating The plate 12 is provided with a second feed port 121, a second water outlet 122, and a second suction port 123. The first f...

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Abstract

The invention relates to the technical field of solid-liquid separation, in particular to a low-temperature vacuum dewatering and drying method which is provided with a sludge conditioning system, a filtering system and a discharging system and comprises the following steps: conditioning sludge, filtering the sludge to form a filter cake, heating a heating plate, vacuumizing to enable a filter chamber to form negative pressure, dewatering the filter cake, draining and discharging. The graphene layer with good thermal conductivity is arranged on the heating plate, and the purpose of rapidly heating the filter chamber is achieved; meanwhile, the constant temperature state of the filter chamber is ensured, the interior of the filter chamber is in a negative pressure state by arranging the vacuumizing assembly, the boiling point of water is reduced, and the purpose of further dewatering the filter cake is achieved.

Description

technical field [0001] The invention relates to the technical field of solid-liquid separation, in particular to a low-temperature vacuum dehydration and drying method. Background technique [0002] Sludge treatment usually includes preliminary filtration, membrane filtration, and vacuum thermal drying to remove the water in the sludge. The purpose is to minimize the amount of sludge and facilitate subsequent processing and recycling of the dried filter cake. However, the existing The existing sludge filtration and drying method has the phenomenon of long processing cycle, incomplete water removal, low production efficiency, resulting in high production cost, which is not conducive to the implementation of energy-saving and emission-reduction policies. Contents of the invention [0003] In order to overcome the problem of incomplete water removal and long water removal time in the sludge filtration and drying process existing in the prior art, the purpose of the present in...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/13C02F11/122
CPCC02F11/122C02F11/13
Inventor 唐祖雄黄国俭
Owner 东莞市汇盈环保科技有限公司
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