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Method for raising temperature of vaporizing raw liquor

A technology of evaporating stock solution and evaporation station, which is applied in the field of alumina plant, which can solve the problems of increased energy consumption of evaporating stock solution, heat loss, vibration of transportation pipelines, etc., and achieves the effects of reducing evaporation energy consumption, eliminating violent vibration, and saving energy consumption

Inactive Publication Date: 2006-07-05
GUIYANG AL-MG DESIGN & RES INST
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Problems solved by technology

[0002] In the prior art, the evaporation stock solution of the alumina plant is pumped to the evaporation station for evaporation through the stock solution pump. In order to strengthen the decomposition, an intermediate cooling device is added to reduce the temperature of the evaporation stock solution from the original ~92°C to ~80°C, so that Evaporating raw liquid increases energy consumption during evaporation
The dissolved new steam condensate has a pressure of ~0.5Mpa and a temperature of ~158°C. When it is sent to a thermal power plant for flash evaporation, it will cause severe vibrations in the transportation pipeline, and the generated hot steam will be directly emptied, causing severe heat loss. loss

Method used

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  • Method for raising temperature of vaporizing raw liquor

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Embodiment Construction

[0008] Embodiments of the present invention: as attached figure 1 As shown, when increasing the temperature of the evaporating stock solution, a part of the evaporating stock solution from the stock solution pump 1 directly enters the evaporation station through the bypass pipe 5 arranged behind the stock solution pump 1 for evaporation, and the other part of the evaporated stock solution enters along the pipeline 4 into the In the plate heat exchanger 3, heat exchange is performed with the new steam condensed water that enters the plate heat exchanger 3 from the leaching condensate pump 2, and the evaporated raw liquid heated up after the heat exchange is combined with the evaporated raw liquid in the bypass pipe 5 Enter the evaporation station for evaporation; while the new steam condensate from the dissolution condensate pump 2 enters the plate heat exchanger 3 along the pipeline 4 to exchange heat with the evaporation stock solution, and the cooled steam condensate enters t...

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Abstract

This invention describes a process for raising the temperature of the evaporating primary liquid. In the process, the evaporating primary liquid from the primary liquid pump enters a plate-type heat exchanger for the exchange of heat with a live steam condensate that enters the plate-type heat exchanger from a stripping condensate pump. After the exchange of heat, the heated evaporating primary liquid enters an evaporator for evaporation, and the cooled live steam condensate enters a thermoelectricity plant for flash evaporation. This invention has such advantages as low energy consumption and prevents drastic vibration of the transportation pipes.

Description

Technical field: [0001] The invention relates to a method for raising the temperature of evaporation raw liquid in an alumina factory. Background technique: [0002] In the prior art, the evaporation stock solution of the alumina plant is pumped to the evaporation station for evaporation through the stock solution pump. In order to strengthen the decomposition, an intermediate cooling device is added to reduce the temperature of the evaporation stock solution from the original ~92°C to ~80°C, so that Evaporating the stock solution increases energy consumption during evaporation. The dissolved new steam condensate has a pressure of ~0.5Mpa and a temperature of ~158°C. When it is sent to a thermal power plant for flash evaporation, it will cause severe vibrations in the transportation pipeline, and the generated hot steam will be directly emptied, causing severe heat loss. loss. Invention content: [0003] The object of the present invention is to: provide a kind of method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02
Inventor 张明渊杨小平吕胜利王贵新
Owner GUIYANG AL-MG DESIGN & RES INST
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