Sludge heat exchanger

Abstract

The invention relates to a sludge heat exchanger. The sludge heat exchanger comprises a heat preservation shell, a plurality of sludge flowing square pipes are arranged on the heat preservation shellin a linear array mode, the middle portions of the sludge flowing square pipes are of a gradually-shrinking structure, the sludge flowing square pipes penetrate through the heat preservation shell, aplurality of heat exchange plate assemblies are arranged on the outer wall of each sludge flowing square pipe, each heat exchange plate assembly comprises a micro water channel plate and a cover plate, annular sealing protrusions are arranged on the peripheries of the cover plates, the annular sealing protrusions are connected with the peripheries of the micro water channel plates in a sealed mode, flowing gaps are formed between the micro water channel plates and the cover plates, a plurality of heat exchange protrusions are densely distributed on each micro water channel plate in an array mode, the top ends of the heat exchange protrusions make contact with the cover plates, the micro water channel plates are in contact with and fixed to the inner walls of the sludge flowing square pipes, the heat exchange plate assemblies of each sludge flowing square pipe are connected in parallel through guide pipes, and sealing protrusions of the micro water channel plates are provided with waterinlets and water outlets. The sludge heat exchanger adopts a micro water channel structure, so that the maximum heat exchange effect is ensured while the sludge flowing efficiency is not influenced.

Description

technical field [0001] The invention relates to a sludge heat exchanger, which belongs to the field of environmental protection equipment. Background technique [0002] The traditional sludge heating is only through a heating bed or solar drying field, which takes a long time to heat and requires repeated heating to ensure the heating temperature. At the same time, both the heating bed and the solar drying field are open structures, which are suitable for odors. For sludge with high heavy moisture content, the above two treatment methods will bring higher air temperature and harmful steam, and at the same time bring pollution to the working environment; therefore, a closed type with high heat exchange efficiency is required. The sludge heat exchanger; also in the process of sludge cooling, the traditional method is also achieved by stirring and contacting with air, and there will still be the problem of harmful steam evaporation. Contents of the invention [0003] The tec...

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Problems solved by technology

[0002] The traditional sludge heating is only through a heating bed or solar drying field, which takes a long time to heat and requires repeated heating to ensure the heating temperature. At the same time, both the heating bed and the solar drying field are open structures, which are suitable for odors. For sludge with high heavy moisture content, the above two treatment methods will bring higher air temperature and harmful steam, and at the same time bring pollution to the working environment; therefore, a closed type with high heat exchange efficiency is required. Sludge heat exchanger; also in the process of sludge cooling, the traditional method is also realized by stirring and contacting with air, and there will still be the problem of evaporation of harmful steam

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