Multipurpose efficient low-temperature evaporation, concentration and crystallization equipment

Abstract

The invention relates to multipurpose high-efficiency low-temperature evaporation concentration crystallization equipment which comprises a spiral conveyor, an evaporator assembly, a spiral winch, a spiral scraper stirring rod and a stirrer assembly, the upper part of the evaporator assembly is provided with the stirrer assembly, and the lower part of the evaporator assembly is provided with a material confluence chamber; the inner cavity of the evaporator assembly, namely the space of the outer wall of the heat exchange pipe, is a refrigerant flowing channel, a cavity on the lower portion of the chain wheel box body is communicated with the material confluence chamber through the heat exchange pipe to form a liquid material flowing channel, and a spiral scraper stirring rod is arranged in each heat exchange pipe. The lower end of the stirring rod penetrates through a magnetic seat ring in the limiting disc assembly in a magnetic limiting mode, the position axis of each driven shaft and each driving shaft in the stirrer assembly is symmetrical to the position of a heat exchange pipe arranged in the evaporator assembly below the driven shaft and the driving shaft, the axis is consistent with the position of the heat exchange pipe, and heat preservation cotton is arranged outside the stirrer assembly, the evaporator assembly and the material confluence chamber. According to the invention, the efficiency of heat exchange between the refrigerant and the process fluid can be improved.

Description

technical field [0001] The invention relates to the field of low-temperature evaporation, concentration, and crystallization equipment, and relates to a multi-purpose, high-efficiency, low-temperature evaporation, concentration, and crystallization equipment. Background technique [0002] The existing evaporation treatment technology can be roughly divided into two types: 1. To make the liquid material in a boiling state, it needs to operate at a higher temperature, or maintain a certain degree of vacuum to reduce the boiling point of water, so on the one hand, it needs to consume a lot of steam On the other hand, industrial wastewater and domestic waste leachate containing high salt, acid and alkali often contain a large amount of corrosive pollutants. High temperature conditions increase the risk of equipment corrosion, and at the same time, the violent evaporation process produces a large amount of smoke. And toxic gases, the ecological environment has been greatly pollut...

AI Technical Summary

Problems solved by technology

However, this technology has great limitations, and it cannot quickly and effectively reduce the temperature of the material, because once the temperature drops below zero, the material will easily freeze, causing ice blockage in the equipment and pipelines, resulting in equipment damage. The evaporator used recently, other The efficiency of heat exchange between refrigerant and process fluid can also be improved, so it is necessary to carry out technical research and reform on low-temperature evaporation, concentration and crystallization equipment to overcome the above defects

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