Internal circulation evaporator with settling chamber

Abstract

The invention discloses an internal circulation evaporator with a settling chamber, which comprises a material inlet, a vapor-liquid separation chamber, a vapor-liquid distributor, a forced circulating pump, heating chamber outer ring heating pipes, a heating chamber inner ring heating pipe and a crystallization settling chamber. The material inlet is arranged between the vapor-liquid distributor and the heating chamber outer ring heating pipes; the heating chamber inner ring heating pipe is arranged between the heating chamber outer ring heating pipes; the vapor-liquid separation chamber is arranged above the vapor-liquid distributor; the forced circulating pump is arranged below the heating chamber outer ring heating pipes; and the crystallization settling chamber is fixed below the forced circulating pump. The internal circulation evaporator with the settling chamber eliminates hot short circuit phenomenon, increases the evaporative capacity and can decrease the electric energy consumption by 50%.

Description

technical field [0001] The invention relates to an evaporator, in particular to an indoor circulating evaporator with settling. Background technique [0002] The energy consumption of the evaporator is extremely high, and at present, many chemical wastewaters that cannot be treated by biochemical methods are mostly concentrated by evaporation to achieve zero discharge and eradicate the pollution of wastewater. [0003] When the evaporator with large production capacity is currently used, it has the following obvious disadvantages: [0004] 1. There is a thermal short circuit phenomenon. When the material heated to the boiling point has not completely escaped the gas and the temperature drops, it has entered the heating chamber again from the circulation pipe through the forced circulation pump, causing the temperature of the material in the heating chamber to rise, and the heat transfer effect is due to The temperature difference between the heating steam and the material d...

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Problems solved by technology

[0006] 3. Since the traditional evaporator does not have space for the growth of condensed crystal particles, the crystals are always circulated in the evaporator, which greatly increases the probability of the tubes in the heating chamber being blocked. The difficulty of solid production increases, and the power consumption of the forced circulation pump increases accordingly.

Another prob...

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