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Iodinating and purifying device and molten salt heat exchange method based on same

A thermal method and molten salt technology, which are applied in furnace control devices, lighting and heating equipment, furnaces, etc., can solve the problems that the temperature cannot be effectively and uniformly controlled, the iodization purification efficiency is low, and the temperature control accuracy is low, and the heating Dual-purpose cooling, uniform and sufficient heat exchange, and high temperature control accuracy

Active Publication Date: 2015-05-06
有研资源环境技术研究院(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the reaction furnace temperature cannot be effectively uniformly controlled in the existing iodination purification process, and the temperature control accuracy is low, resulting in low iodide purification efficiency, and provides an iodide purification device and its molten salt exchange hot method

Method used

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  • Iodinating and purifying device and molten salt heat exchange method based on same
  • Iodinating and purifying device and molten salt heat exchange method based on same
  • Iodinating and purifying device and molten salt heat exchange method based on same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to above-mentioned technological process, used molten salt is 45 wt% NaNO 2 and 55 wt% KNO 3 The composition of the mixture, the control conditions are: the temperature of the molten salt at the outlet of the molten salt tank 2 is 200 ° C, the temperature of the molten salt at the outlet of the molten salt heating furnace 1 is 550 ° C, and the first valve 6 is opened. The salt temperature is 250°C.

[0026] The temperature of the realized iodination reaction furnace 4 is as follows:

[0027]

Embodiment 2

[0029] According to the technological process described in Example 1, the molten salt used is 45 wt% NaNO 2 and 55 wt% KNO 3 The composition of the mixture, the control conditions are: the temperature of the molten salt at the outlet of the molten salt tank 2 is 200 ° C, the temperature of the molten salt at the outlet of the molten salt heating furnace 1 is 550 ° C, and the first valve 6 is opened. The salt temperature is 300°C.

[0030] The temperature of the realized iodination reaction furnace 4 is as follows:

[0031]

Embodiment 3

[0033] According to the technological process described in Example 1, the molten salt used is 45 wt% NaNO 2 and 55 wt% KNO 3 The composition of the mixture, the control conditions are: the temperature of the molten salt at the outlet of the molten salt tank 2 is 200 ° C, the temperature of the molten salt at the outlet of the molten salt heating furnace 1 is 550 ° C, and the first valve 6 is opened. The salt temperature is 550°C.

[0034] The temperature of the realized iodination reaction furnace 4 is as follows:

[0035]

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Abstract

The invention belongs to the technical field of molten salt heat exchange devices and methods and in particular relates to an iodinating and purifying device and a molten salt heat exchange method based on the same. The iodinating and purifying device is characterized in that a molten salt heating furnace is connected with a molten salt bath and an iodination reaction furnace respectively via pipelines; a submerged pump is arranged between the molten salt heating furnace and the molten salt bath; the molten salt bath is connected with the iodination reaction furnace via a pipeline and a third valve is arranged on the pipeline; a stirring paddle is arranged on the left side of the iodination reaction furnace; the iodination reaction furnace and the molten salt bath are connected via two branches; a second valve is arranged on one branch and a first valve and a heat exchanger are arranged on the other branch from the iodination reaction furnace to the molten salt bath in order. The device is operated circularly by adjusting opening and closing of the first, second and third valves. The iodinating and purifying device can effectively achieve heating of the iodination reaction furnace and control of the constant temperature and control the temperature accurately and has the characteristics of dual purposes of heating and cooling, uniformity and fullness in heat exchange and high temperature control accuracy.

Description

technical field [0001] The invention belongs to the technical field of a molten salt heat exchange device method, and particularly relates to an iodization purification device and a molten salt heat exchange method thereof. Background technique [0002] The principle of iodization purification is that in a vacuum sealed container, iodine vapor reacts with the purified metal at a lower temperature to generate volatile iodide, which dissociates into metal and iodine vapor on the mother wire at a higher temperature. It is deposited on the hot mother wire to make the mother wire grow, and the iodine vapor returns to the raw material area to continue to react with the raw metal, and the process is repeated. The key to realizing the process is to control two different temperature conditions in the reaction equipment, namely the wire temperature and the material temperature (ie the furnace temperature). Among them, the wire temperature is obtained by directly applying a voltage on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/04F27D19/00
Inventor 尹延西胡志方田丽森江洪林罗远辉王力军
Owner 有研资源环境技术研究院(北京)有限公司
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