Novel waste heat/live steam composite evaporator

Abstract

The invention discloses a novel waste heat / live steam composite evaporator which is used for evaporating media to be concentrated by utilizing heat of waste heat / live steam. The novel waste heat / live steam composite evaporator comprises a cavity body, wherein an air collecting chamber, a heating chamber, an upper separation chamber and a lower separation chamber are communicated in sequence from top to bottom in the cavity body, a heat exchange tube bundle is arranged in the middle of the cavity body, and a jet fabric structure is arranged in the air collecting chamber. Uniform film formation of the media which pass through fabric in the heat exchange tube bundle is guaranteed, the heat exchange time is prolonged, the phenomena of excessive heat load and the like caused by blocking are avoided, additionally, the flow resistance of secondary steam is reduced, the total effective temperature difference is increased, the COD (chemical oxygen demand) content of condensed water is reduced by adopting a top-down arrangement mode, the evaporation effect is greatly increased, and the product quality is improved.

Description

technical field [0001] The invention relates to the field of industrial waste liquid evaporation, in particular to a novel waste heat / raw steam composite evaporator. Background technique [0002] In the fields of grain deep processing industry, fermentation industry, food industry, paper industry, light chemical industry, chemical industry and other fields, more and more attention has been paid to the evaporation and concentration recovery of the slurry (waste liquid) discharged from the production section, which can make production waste The liquid reaches the technological index required by the production process, and at the same time completely or partially replaces the boiler steam, so that the enterprise can achieve the goal of "energy saving and consumption reduction". [0003] However, in the traditional evaporation and concentration equipment, the separation chamber is designed separately, with large volume, large liquid storage capacity, large circulation pump flow ...

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Problems solved by technology

[0003] However, in the traditional evaporation and concentration equipment, the separation chamber is designed separately, with large volume, large liquid storage capacity, large circulation pump flow rate, low evaporation rate, large power consumption, long material residence time, and double-layer orifice structure distribution. The device is easy to block, resulting in high steam consumption per ton of evaporation, easy scaling, high operating cost, low heat transfer efficiency, short effective operating time, and poor product quality, which result in low equipment efficiency, short life, and high cost. This technology cannot be widely promoted in actual production

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