Phosphoric acid waste acid solution recycling based continuous production underpressure distillation equipment

Abstract

The invention discloses a phosphoric acid waste acid solution recycling based continuous production underpressure distillation equipment, and belongs to the technical field of distillation equipment.The phosphoric acid waste acid solution recycling based continuous production underpressure distillation equipment comprises a distillation tank and a machine box; the bottom of the distillation tankis fixedly connected with the top of the machine box; recycling tanks are fixedly connected with the left sides and the right sides of the distillation tank and the machine box respectively; the center of the top of the distillation tank is fixedly connected with a waste liquid pipe. According to the phosphoric acid waste acid solution recycling based continuous production underpressure distillation equipment, the top of the distillation tank is provided with a hollow condensation plate; the hollow condensation plate is communicated with the waste liquid pipe, so that waste acid solution introduced into the phosphoric acid waste acid solution recycling based continuous production underpressure distillation equipment through the waste liquid pipe can be dispersed, the hollow condensation plate is cooled, waste liquid is introduced into the distillation tank for distillation; in distillation process, generated steam is condensated by the hollow condensation plate, no condensation machineis needed, waste acid solution is adopted for condensation, source is saved, cost is reduced, the introduced waste acid solution can be subjected to pre-heating, and distillation efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of distillation equipment, in particular to a continuous production vacuum distillation equipment based on the recovery of waste phosphoric acid liquid. Background technique [0002] Distillation is a thermodynamic separation process. It utilizes the different boiling points of the components in the mixed liquid or liquid-solid system to evaporate the low-boiling components and then condense them to separate the entire components. There are two types of evaporation and condensation. A union of unit operations. Compared with other separation methods, such as extraction, filtration and crystallization, its advantage is that it does not need to use other solvents other than the system components, so as to ensure that no new impurities will be introduced. Different components of liquids have different boiling points, which is the most basic theoretical basis for distillation. Simple distillation, such as makin...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a vacuum distillation equipment based on the recovery of waste phosphoric acid liquid for continuous production, which solves the need for a condensing device to cool down and condense the steam during distillation, and the condensing device not only needs condensate, but also Dissipating heat from the heated condensate wastes more resources and increases the cost

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