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
CN1796281AInactive Publication Date: 2006-07-05GUIYANG AL-MG DESIGN & RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUIYANG AL-MG DESIGN & RES INST
Publication Date
2006-07-05
Estimated Expiration
Not applicable · inactive patent

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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.
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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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