A concentrated brine treatment device and process

Abstract

The invention discloses a strong brine treating device which comprises a reverse osmosis device, a flash tank, a vacuum pump, a solid-liquid separation device, a reverse osmosis high-pressure pump, a concentrated water tank, a clean water tank, a condensing device and a heating device which are communicated through pipelines. The strong brine treating device is more efficient, energy-saving, economical, environment-friendly and capable of realizing zero emission of strong brine.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a concentrated brine treatment device and process in industrial sewage. Background technique [0002] At present, coal chemical projects in my country are developing rapidly. In Xinjiang alone, there are 14 coal-to-natural gas projects under construction or proposed. According to incomplete statistics, the national coal-to-olefin production capacity under construction and proposed construction has reached 28 million tons, coal-to-oil has reached 40 million tons, coal-to-natural gas has reached nearly 150 billion cubic meters, and coal-to-ethylene glycol has exceeded 5 million tons. According to the statistics of the China Petroleum and Chemical Industry Association, during the 12th Five-Year Plan period, the investment in the construction of my country's coal chemical bases was nearly 2 trillion yuan. After all these projects are completed, my country will become the ...

AI Technical Summary

Problems solved by technology

However, the current multi-stage flash evaporation technology often still requires a high temperature of the influent water, which does not give full play to the advantages of the flash evaporation technology, and the design of the flash tank is relatively extensive, the actual evaporation surface area is small, the gas-liquid phase state in the tank is complex, and some The temperature of the area decreases rapidly with the flash evaporation process, which affects the evaporation effect

[0009] In addition, the current combined application of these two technologies often adopts a direct serial connection method, and the combination of the two is not close, so it often causes equipment redundancy and waste of energy consumption.

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