Energy-saving evaporating system without preheating or flash evaporation

An evaporation system, no preheating technology, used in multi-effect evaporation, aluminate/alumina/aluminum hydroxide purification, etc., can solve problems such as wasting energy, and achieve the goal of reducing construction investment, shortening evaporation process, and saving energy. Effect

Active Publication Date: 2015-03-11
南通金茂防爆电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a process of first cooling down, then heating up, and then cooling down, which is extremely wasteful of energy.

Method used

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  • Energy-saving evaporating system without preheating or flash evaporation

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Embodiment Construction

[0016] Refer to attached figure 1 : The energy-saving evaporation system without preheating and flashing of the present invention comprises a first-stage evaporator 1, a second-stage evaporator 2, a third-stage evaporator 3, a fourth-stage evaporator 4, a fifth-stage evaporator 5, and a sixth-stage evaporator 6. Stock solution pipeline 7, feed pipeline 8, evaporation masterbatch collection pipeline 9, valve 10, water cooler 11. The first-stage evaporator 1 is connected to the steam generation system, and the first-sixth-stage evaporators are connected in series with the steam pipeline 12, and the temperature in each evaporator is successively lowered step by step. The steam line 12 output from the six-stage evaporator 6 is connected to the water cooler 11 . Wherein the discharge port of the first-stage evaporator is connected to the feed port of its secondary evaporator through the material-passing pipeline 8, and the discharge port of the secondary evaporator is connected to...

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Abstract

The invention relates to an energy-saving evaporating system without preheating or flash evaporation, and belongs to the technical field of evaporation equipment for solution amount balance of the production of aluminum oxide. The energy-saving evaporating system without the preheating or the flash evaporation comprises multiple levels of evaporators. The energy-saving evaporating system without the preheating or the flash evaporation is characterized in that all the levels of the evaporators are connected in series through steam pipelines (12), a discharge port of each upper level evaporator is connected with a feed port of a next level evaporator through a material passing pipeline (8), the temperature in all the levels of the evaporators is reduced gradually in the series connection sequence, each evaporator is connected with an evaporation master batch collecting pipeline (9), a valve (10) is arranged on each evaporation master batch collecting pipeline (9), and the first level evaporator (1) and the second level evaporator (2) are connected with a stock solution pipeline (7) provided with the valves (10). According to the energy-saving evaporating system without the preheating or the flash evaporation, by means of the direct heat exchange of evaporated secondary steam and a lower-temperature solution, the heat exchange process is simplified, the evaporation process is shortened, radiation losses are reduced, initial investment of an evaporator system is reduced, and the total utilization rate of energy resources is improved obviously.

Description

technical field [0001] The energy-saving evaporation system without preheating and flash evaporation belongs to the field of evaporation equipment for alumina production liquid volume balance, and specifically relates to a multi-effect vacuum evaporation system for aluminum oxide decomposition mother liquor circulation. Background technique [0002] In alumina production and other chemical production, most of the multi-effect evaporators use the final effect countercurrent feed to preheat step by step, discharge after flash evaporation, and the series connection of evaporation units (components). The evaporation process is long and the equipment body The heat dissipation is large, and the project construction investment is large. The discharge temperature range of the evaporator system is narrowly controlled, and the energy utilization efficiency has the potential to be reduced. [0003] The consumption of steam and electricity is one of the main consumptions in the product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D1/26C01F7/46
Inventor 满永国
Owner 南通金茂防爆电气有限公司
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