Sodium sulfate solution circulating fluidized bed evaporation device and operation method thereof

Abstract

The invention belongs to the technical field of evaporator and discloses a sodium sulfate solution circulating fluidized bed evaporation device and an operation method thereof. A heating pipe is vertical and the lower end of the pipe is inlet and the upper end of the pipe is outlet; the outlet of the heating pipe is connected with the inlet of an evaporation chamber through a first connection pipe, the upper outlet of the evaporation chamber is connected with a condenser, the lower outlet of the evaporation chamber is connected with the inlet of a circulation pipe, the outlet of the circulation pipe is connected with the inlet of a circulation pump, and the outlet of the circulation pump is connected with the inlet of the heating pipe through a second connection pipe. An electromagnetic flowmeter is mounted on the circulation pipe and connected with a high-level groove and an on-line particle feeding device, and an on-line particle collecting device is connected with the first connection pipe; the on-line particle feeding device and the on-line particle collecting device are respectively used for adding and collecting silicon carbide particles. The invention combines the fluidizedbed heat exchange scale prevention and energy saving technology with the evaporation process of the sodium sulfate solution, the operation is simple, and the heat transfer and scale prevention performance in the evaporation process of the sodium sulfate solution are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of evaporators, in particular to a novel sodium sulfate solution evaporating device and an operating method thereof. Background technique [0002] Sodium sulfate is an important basic chemical raw material in industrial production. Because of its low price, it is widely used in glass, papermaking, bleaching and dyeing, feed, washing and other industries. In 2017, the output of sodium sulfate in my country was about 12.58 million tons, accounting for 79.2% of the global production market share. However, in the production process of sodium sulfate, the evaporation process of its solution not only has poor heat transfer performance, but also has serious scaling problems. The generation of fouling increases the heat transfer resistance, reduces the heat transfer performance and evaporation intensity of the evaporator, causes huge economic losses and energy waste, and limits the industrial production of sodium s...

AI Technical Summary

Problems solved by technology

[0003] What the present invention aims to solve is the technical problem of poor heat transfer performance and easy scaling in the evaporation process of sodium sulfate solution, and provides a circulating fluidized bed evaporation device for sodium sulfate solution and its operating method, which can prevent the The combination of scale energy-saving technology and the evaporation process of sodium sulfate solution is simple to operate and effectively improves the heat transfer and anti-scale performance during the evaporation process of sodium sulfate solution

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