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Device for controlling zinc sulfate heptahydrate cooling crystallization shape, and cooling method thereof

A technology of zinc sulfate heptahydrate and cooling crystallization, which is applied in the direction of zinc sulfate and solution crystallization, can solve the problems of affecting normal production, poor cooling crystal shape, and crystallization blockage of coolers, so as to save cooling water, improve crystallization quality, The effect of increasing volume

Active Publication Date: 2014-02-26
刘向东
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] One of the current cooling crystallizers is a gap cooling crystallizer, and the other is a continuous cooling crystallizer. The former cooling crystallization shape is poor, irregular, the crystal particles are small, the adsorption of free water is high, and the quality is low. The latter has a good crystal shape and crystal The particles are uniform and of high quality, but the cooler is prone to crystallization and blockage, which affects the normal production

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  • Device for controlling zinc sulfate heptahydrate cooling crystallization shape, and cooling method thereof

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Embodiment Construction

[0015] The present invention will be further described below in combination with a preferred embodiment and accompanying drawings, so as to help understanding of the content of the present invention.

[0016] Such as figure 1 As shown, the equipment installation relationship of the present invention is: the device includes a cooler I7 and a cooler II8, a mixer is installed inside the cooler I7 and the cooler II8, and a discharge port is arranged at the bottom of the cooler I7 and the cooler II8; The water inlet of Ⅰ7 is connected with two water pipes, and valves Ⅰ1 and Ⅱ2 are respectively installed on the water pipes; the water outlet of cooler Ⅰ7 is connected with two water pipes, one of which is equipped with valve Ⅴ5, and the other is connected with cooler Ⅱ8 The water inlet of the cooler Ⅱ8 is connected with two water pipes, and valves Ⅲ3 and valve Ⅳ4 are respectively installed on the water pipes; the water outlet of the cooler Ⅱ8 is connected with two water pipes, one of ...

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Abstract

The invention discloses a device for controlling a zinc sulfate heptahydrate cooling crystallization shape, and a cooling method thereof. According to the present invention, two or more coolers are adopted to carry out water cooling series connection operation and direction changing operation to achieve two purposes, wherein one purpose is that: the temperature difference between the cooling medium and the cooled liquid is reduced, and the forming speed and the forming amount of the crystal nucleus are reduced so as to obtain the crystal with large particles and good quality, the other purpose is that: the direction changing operation is mainly provided for preventing the cooler crystal from agglomerating and for convenient cleaning.

Description

technical field [0001] The invention relates to cooling crystallization, in particular to a device and cooling method for controlling the shape of zinc sulfate heptahydrate cooling crystallization. Background technique [0002] Cooling crystallization is a commonly used unit operation in chemical production and plays an important role in chemical production practice, and cooling crystallizer is an important equipment of cooling crystallization system. The advanced design of this equipment directly affects the product quality and efficiency of production. [0003] One of the current cooling crystallizers is a gap cooling crystallizer, and the other is a continuous cooling crystallizer. The former cooling crystallization shape is poor, irregular, the crystal particles are small, the adsorption of free water is high, and the quality is low. The latter has a good crystal shape and crystal The particles are uniform and of high quality, but the cooler is prone to crystallization ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D9/02C01G9/06
Inventor 刘向东
Owner 刘向东