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High-purity ammonia production device

A production device and high-purity ammonia technology, applied in the direction of ammonia preparation/separation, etc., can solve the problems of high cost, difficult ammonia purification and high purity, etc.

Active Publication Date: 2015-06-17
HUNAN HIEND PRODUCTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method is difficult to purify ammonia to a very high purity, or even if it can be purified to a very high purity, it will pay a high cost, because ammonia and water are too soluble

Method used

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Embodiment Construction

[0025] figure 1 It is a schematic diagram of the first embodiment of the present invention. The device is sequentially connected by the following components with stainless steel pipes: ammonia raw material tank (1), potassium sodium alloy tank (2), diaphragm compression pump (3), condenser (5), gas-liquid separation tank (6) , and ammonia product tank (8). The arrows on the pipes in the figure represent the flow direction of gas or liquid in the pipes. Put into activated carbon filter (7) in gas-liquid separation tank (6). Condenser (5) and gas-liquid separation tank (6) and gac filter (7) are placed in freezer (4).

[0026] Potassium-sodium alloy tank (2) is filled with potassium-sodium alloy——it is formed by melting together high-purity metal potassium and sodium in a ratio of 1:1. Its melting point is ~25°C, and it is liquid at room temperature. The potassium-sodium alloy is placed in the stainless steel container to form a potassium-sodium alloy tank (2). The shell o...

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Abstract

The invention discloses a high-purity ammonia production device. The device is prepared by connecting the following components in sequence through pipelines: an ammonia raw material tank, a potassium-sodium alloy tank, a diaphragm compression pump, a condenser, a gas-liquid separation tank, and an ammonia finished product tank. An active carbon filter is arranged in the gas-liquid separation tank, the condenser and the gas-liquid separation tank are put in a refrigerating box, and the potassium-sodium alloy tank is the core component of the high-purity ammonia production device and is full of potassium-sodium alloy, which is prepared by melting high purity potassium and sodium together according to a certain ratio. The provided production device can be co-used with a distillation tower, a rectifying tower, and the like. When ammonia gas goes through the potassium-sodium alloy tank, gas containing the oxygen element such as oxygen gas, water, carbon dioxide, carbon monoxide, and the like is absorbed by the potassium-sodium alloy, the content of oxygen in the forms of oxygen gas, water, carbon dioxide, carbon monoxide, and the like is reduced to the ppb (part per billion) level, and the provided production device is suitable for producing high-purity ammonia gas.

Description

technical field [0001] The technology relates to a high-purity ammonia production device, especially a high-purity ammonia production device with a purity above "6N" (that is, six "9", or 99.9999%). Background technique [0002] High-purity ammonia has extremely important uses in the semiconductor field. However, the water in ammonia gas is very difficult to remove. At present, the water in ammonia is usually removed by rectification, that is, the water in ammonia is separated by using the difference in boiling point between ammonia and water. However, it is difficult to purify ammonia to a very high purity by this method, or even if it can be purified to a very high purity, it will pay a high cost, because ammonia and water are too soluble. Both ammonia and water molecules contain strong hydrogen bonds, and ammonia and water can easily form ammonia water molecules (NH 3 ·H 2 O) or ammonium hydroxide (NH 4 OH) molecules. In other words, ammonia and water have formed a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/12
Inventor 刘祥林
Owner HUNAN HIEND PRODUCTS CO LTD
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