Single-effect forced-circulation evaporation system for hazardous waste treatment liquid and operation method of single-effect forced-circulation evaporation system

Abstract

The invention relates to a single-effect forced-circulation evaporation system for hazardous waste treatment liquid and an operation method of the single-effect forced-circulation evaporation system.The system comprises a heater and a separator, a discharge opening of the heater is connected with a heating opening of the separator, a circulating opening of the separator is connected with a feed opening of the heater through a forced-circulation pump, a feed opening of the separator is connected with a feeding pump, a returning opening of the separator is connected with a mother liquid tank, aliquid outlet in the top of the separator is connected with a gas-liquid separation demister which is connected with a condenser, the condenser is connected with an effluent storage tank, a conical discharging pipe is arranged at the bottom of the separator, and is connected with a discharge pump, the discharge pump is connected with a thick kettle, and is connected with the returning opening ofthe separator, the thick kettle is connected with a centrifugal machine, the centrifugal machine is connected with the mother liquid tank. When the single-effect forced-circulation evaporation systemis in operation, the hazardous waste treatment liquid is circulated between the heater and the separator, and solid salt is collected through centrifuging at last. Continuous feeding and discharging are realized, the crystallized solid salt can be discharged in time, and blockage of pipelines is avoided.

Description

technical field [0001] The invention relates to a single-effect forced circulation evaporation system for evaporating and concentrating hazardous waste treatment liquids and an operating method thereof, belonging to the technical field of evaporating and concentrating hazardous waste treatment liquids. Background technique [0002] Hazardous waste treatment is a special industry. The hazardous waste treatment liquid has complex components, high viscosity, and high total salt content. During the evaporation process, it is easy to scale on the heating surface, causing blockage to pipes and heaters. Affect the evaporation rate, and cause damage to the equipment. The forced circulation evaporator uses external power to circulate, which improves the flow rate and can effectively reduce the generation of scaling. [0003] At present, in the hazardous waste treatment industry, due to the particularity of the hazardous waste treatment liquid, the evaporation and concentration proce...

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Problems solved by technology

[0003] At present, in the hazardous waste treatment industry, due to the particularity of the hazardous waste treatment liquid, the evaporation and concentration process has not been well resolved. The traditional method is to use a single-effect kettle for evaporation treatment. The disadvantage is that the speed is slow and continuous processing cannot be carried out. material production, and the evaporated solid salt cannot be released in time, which is easy to cause blockage

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