Evaporator for salt-containing organic waste water of high concentration

Abstract

The invention provides an evaporator for salt-containing organic waste water of high concentration. The evaporator comprises the following components: an evaporating chamber, a shower pipeline, a steam buffer tank, a hot well and a sand supplementing tank; the evaporating chamber comprises the following components: a heat exchange tube bundle, an evaporating chamber cylindrical shell, a deformingdevice, a steam pipe case, and a purging pipeline; the heat exchange tube bundle comprises several heat exchange tubes, and the heat exchange tubes are horizontally installed at the lower part in theevaporating chamber cylindrical shell; the steam buffer tank comprises a manhole and a flushing pipeline, the steam buffer tank and the evaporating chamber are connected through a flange, and the flange is installed on a secondary steam outlet of the evaporating chamber; the manhole is arranged at the lower part of the steam buffer tank and closed to the evaporating chamber; the flushing pipelineis provided with a nozzle, and the flushing nozzle is placed over a demister of the evaporating chamber. The flushing pipeline is provided with the flushing nozzle for carrying out on-line flushing ofthe demister in the evaporating chamber, in order to avoid unstable operation of the evaporator caused by demister failure.

Description

technical field [0001] The invention provides an evaporator for high-concentration salt-containing organic wastewater. Background technique [0002] High-concentration saline organic wastewater is a complex water body that has a large stock and is difficult to treat. Take landfill leachate as an example. Its source is waste incineration plant or landfill plant. It is the water contained in the waste itself and the rain and snow water and other water entering the landfill. A high-concentration salt-containing organic wastewater formed through the garbage layer and the overburden layer. Landfill leachate is a typical high-concentration salt-containing organic wastewater. The water quality is quite complex, containing high concentrations of organic matter, heavy metal salts, SS, and ammonia nitrogen. Landfill leachate not only pollutes soil and surface water sources, but also pollutes groundwater. [0003] There have been many studies and implementation cases for high-concent...

AI Technical Summary

Problems solved by technology

Among these two evaporators, the heat transfer efficiency of the forced circulation evaporator is low, the circulation pump power requirement is extremely high, the energy consumption is high, the cost is high, and a large available space is required for installation, while the traditional horizontal horizontal tube falling film evaporator Although the heat transfer coefficient is relatively high, the occupied space and energy consumption are relatively small, but it has the defect of easy scaling under the condition of high-concentration saline organic wastewater medium, and cannot be effectively and widely used

Images