Mechanical vapor recompression drying system and method

A technology of mechanical steam and drying system, applied in chemical instruments and methods, dewatering/drying/concentrating sludge treatment, special treatment targets, etc. Small, low moisture content

Pending Publication Date: 2020-11-10
苏州翔云节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with saturated steam, the superheated steam in the inner cavity of the indirect dryer has a theoretically unsatisfactory heat transfer effect. At the same time, after the secondary steam becomes condensed water, more sensible heat is not recovered for the supplementary heat of the system.

Method used

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  • Mechanical vapor recompression drying system and method

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Embodiment Construction

[0045] Such as figure 1 , the present invention provides a first embodiment of a mechanical vapor recompression drying system, which includes a sludge storage tank 110 that stores normal temperature sludge incoming materials and has a condensed water heat exchange coil 111 inside, and an output of the sludge storage tank 110 The sludge injection pump 120 connected with the jacketed heat exchanger 121 and the first external heat source heater 122, the thin-layer evaporative dryer 130 connected with the output of the sludge injection pump 120, and the output of the thin-layer evaporative dryer 130 Connected extrusion slitting molding machine 140, the mesh belt drier 150 that links to each other with the output of extrusion slitting molding machine 140, the dry mud bin 160 that links to each other with the output of mesh belt drier 150, is arranged on thin layer evaporative drier 130 and The steam compressor 220 between the mesh belt dryers 150, the cyclone dust collector 230 con...

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Abstract

The invention discloses a mechanical steam recompression drying system and method. The system comprises a sludge storage tank, a sludge injection pump, a thin-layer evaporation dryer, an extrusion slitting forming machine, a mesh belt dryer, a dry sludge bin, a steam compressor, a cyclone dust collector, a washing dust collector, a condensate water buffer tank and a vacuum pump which is connectedwith the condensate water buffer tank and used for sucking system air to maintain vacuum and discharging non-condensable gas. A large amount of energy consumption and cooling water system consumptioncan be saved. No waste gas is discharged in the process, the system is free of a cooling water system, and water evaporation loss of the cooling tower is reduced.

Description

technical field [0001] The invention relates to the technical field of sludge drying, in particular to a mechanical vapor recompression drying system and method. Background technique [0002] Mechanical Vapor Recompression (Mechanical Vapor Recompression) system, referred to as MVR system, is a new type of high-efficiency energy-saving system. MVR evaporation technology has remarkable energy-saving effect. Compared with multi-effect evaporation technology, MVR system fully recovers the latent heat of secondary steam, and its thermal efficiency is generally equivalent to 5-10 effect evaporators. [0003] In industrial fields such as drying and evaporative concentration, a large amount of water vapor will be generated. Most of the energy carried by water vapor is latent heat, and sensible heat is only a small part. The mechanical vapor recompression system effectively recovers the latent heat of water vapor, thereby achieving the purpose of saving energy and reducing consump...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/13
CPCC02F2303/10C02F11/13
Inventor 曹俊杰
Owner 苏州翔云节能科技有限公司
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