Chemical evaporator convenient for timely washing

Abstract

The invention discloses a chemical evaporator convenient for timely washing. The chemical evaporator is used for measuring the corrosion degree of a pipeline by utilizing the terahertz time-domain spectroscopy, is simple in structure and convenient to operate, has high detection accuracy on the corrosion degree and good system stability, is safe and reliable, is wide in application range, and hasthe advantages of simple operation, quick detection, simple data processing process, good repeatability, high result accuracy and the like. The chemical evaporator has a simple structure, good use effect and high heat efficiency, is not influenced by the shape of the inner wall of a pipe barrel, has the advantage of high detection accuracy, and has an extremely high popularization and applicationvalues.

Description

technical field [0001] The invention relates to the technical field of evaporators, in particular to a chemical evaporator which is easy to clean in time. Background technique [0002] Azeotropic or narrow boiling range mixtures which are known to be inseparable or difficult to separate by conventional distillation can often be separated by extractive distillation. In extractive distillation, steam is contacted with an extraction medium that selectively reduces the volatility of one of the components of the mixture to be separated. The extraction medium has a higher boiling point or a significantly lower vapor pressure than the material to be separated. The extraction medium is discharged via the column sump together with one of the materials to be separated. The extracted material can be released in the stripper and the regenerated extraction medium withdrawn from the stripper sump can be reused. Since the method of separating materials by extractive distillation involve...

AI Technical Summary

Problems solved by technology

[0005] (1) The distribution of each component in the scale layer is complex and changeable, and the scale layer is often mixed with insoluble scale interlayers, resulting in the inability of the acidic cleaning solution to penetrate, causing the chemical reaction to stop midway, and the chemical cleaning cannot be carried out to the end, thus causing the dirt removal rate Low;

[0006] (2) In addition, due to the dense scale layer, the scale samples deep in the heat exchanger cannot be truly obtained, and it is also impossible to screen effective cleaning agents and formulate cleaning plans according to the real situation of the scale samples, which is often an important reason for cleaning failures

[0007] When the fluid to be evaporated contains crystals, the crystals will gradually increase in depth in the gap, which will increase the heat input of the evaporation tank, and the above-mentioned crystals are also difficult to dissolve during the cleaning process of the evaporation system

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