Iodine crystallizer

A crystallizer and vessel wall technology, which is applied in the field of halogen, can solve the problems of poor quality of iodine products, high moisture content, and many impurities, and achieve the effects of good iodine resistance, good iodine crystal shape, and obvious metallic luster

Inactive Publication Date: 2010-03-17
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Iodine products are in powder form, without metallic luster, with many impurities and high water content, and the quality of iodine products is poor and low-grade

Method used

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  • Iodine crystallizer

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Embodiment Construction

[0016] Embodiment The iodine crystallizer used by Wengfu (Group) Co., Ltd., as shown in the accompanying drawing, adopts steel mesh PO in its steel shell 1 as an inner liner, the center is equipped with an agitator 3, and there are 3 holes on the wall. There are 3 viewing holes 6; there are 3 oxidant adding points in the crystallizer, and the oxidant is added from different angles; there is a small platform 5 at the bottom of the cone of the crystallizer, and 4 baffles are installed inside the crystallizer.

[0017] The main dimensions of the crystallizer are: the diameter of the cylinder is 2.8m, the total height is 3.0m, that is, the height of the cone is 1.5m, and the height of the cylinder is 1.5m.

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Abstract

The invention relates to an iodine crystallizer which is characterized in that: (1) a steel net PO is take as a lining in the crystallizer; (2) a small platform is added at the cone bottom of the crystallizer; (3) the crystallizer is provided with a plurality of oxidant adding points; (4) a stirrer of the crystallizer is a frequency-conversion adjusting mode and the frequency of the mixer can be changed according to the characteristic during the formation process of the crystals; (5) the wall of the crystallizer is provided with a viewing hole; (6) the crystallizer is internally provided witha baffle plate so that the collision occurs between crystals or between the crystals and the wall, the stirrer and the like, thus generating minute crystals to induce the secondary nucleation, therebyleading the crystals forming the specified crystal shape. The steel net PO of the lining in the crystallizer has very good performances of iodine-resistance and oxidant-corrosion resistance, thus avoiding the phenomenon of blocking a liquid drain pipe in the crystallization; and adjusting the shapes of the crystals by adjusting the speed of the stirrer, thus obtaining the product with the good shape of the crystal and obvious metallic luster.

Description

technical field [0001] The present invention relates to halogen, more specifically to iodine, and in particular to equipment for iodine crystallization in the iodine refining process. Background technique [0002] Iodine is the basic raw material for the manufacture of inorganic or organic iodides, and an essential nutrient element for humans and plants. It is widely used in medicine, agriculture, dyes, metallurgy, synthetic rubber, national defense and cutting-edge technology fields. Iodine often exists in a variety of mineral resources in the form of associated ore. Due to its low grade, it cannot be well utilized. At present, the world's iodine industry mainly relies on extracting iodine from seawater. Elemental iodine is a purple-black, shiny solid with metal-like properties and easy sublimation, and the product is mostly granular. The iodine extracted from phosphate rock is difficult to crystallize because there are many impurities in phosphate rock, especially fluorin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02C01B7/14
Inventor 何蓉
Owner WENGFU (GRP) CO LTD
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