An open calcium type brine preheating system process

Abstract

The present invention provides a kind of open type calcium type brine preheating system process, comprising a primary preheating device, a secondary preheating device and a settler, the primary preheating device and the secondary preheating device both include a heat exchanger ( Tube-and-tube heat exchanger) and a material storage room, the bottom of the heat exchanger is connected to the lower section of the upper draft tube through the flange, and one end of the lower section of the upper draft tube is connected to the horizontal section of the lower draft tube. One end of the horizontal section of the lower draft pipe is connected with a bottom material propeller through flange connection (the bottom material propeller is suspended from the ground, as a free end that expands with heat and contracts with cold), and the other end of the horizontal section of the lower draft tube is fixed A lower guide pipe is connected, one side of the bottom of the lower guide pipe is provided with a feed nozzle and a return nozzle, the top of the lower guide pipe is fixedly connected with the storage room, and the storage room The top is fixedly connected with the horizontal section of the upper diversion pipe. The open calcium-type brine preheating system has a reasonable process design, can work continuously, and can effectively improve the effective production time.

Description

technical field [0001] The invention belongs to the application field of heat transfer technology and crystallization technology, and in particular relates to an open calcium type brine preheating system process. Background technique [0002] Salt industry, petrochemical industry, metallurgical industry, coal chemical industry, wastewater treatment industry and other related industries that require evaporation and concentration of calcium sulfate-containing solution (or calcium sulfate-containing brine solution) and preheating before evaporation crystallization, calcium sulfate-containing solution (or calcium sulfate-containing brine solution) Calcium sulfate brine solution) in preheating production, use preheating equipment such as plate preheater, traditional tube preheater, plate preheater, etc. When these equipment are preheated, calcium sulfate crystals will rise with temperature However, the precipitation, the bonder wall or the bonded heat exchange surface will reduce...

AI Technical Summary

Problems solved by technology

[0002] Salt industry, petrochemical industry, metallurgical industry, coal chemical industry, wastewater treatment industry and other related industries that require evaporation and concentration of calcium sulfate-containing solution (or calcium sulfate-containing brine solution) and preheating before evaporation crystallization, calcium sulfate-containing solution (or calcium sulfate-containing brine solution) Calcium sulfate brine solution) in preheating production, use preheating equipment such as plate preheater, traditional tube preheater, plate preheater, etc. When these equipment are preheated, calcium sulfate crystals will rise with temperature However, the precipitation, the bonder wall or the bonded heat exchange surface will reduce the heat transfer coefficient or block the channel, and cannot work continuously, seriously affecting the effective production time; or multiple sets of equipment are used alternately, not only the investment is increased, but also the cleaning is frequent (generally 6 It will be cleaned every hour), the consumption of chemicals is high, the amount of equipment maintenance is also large, and a large amount of waste water is generated. For this reason, the present invention proposes an open calcium type brine preheating system process

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