A high-purity ammonia production device

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

Active Publication Date: 2017-08-08
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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  • A high-purity ammonia production device
  • A high-purity ammonia production device
  • A high-purity ammonia production device

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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 composed of the following components connected in sequence 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 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 produced 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 a stainless steel container to form a potassium-sodium alloy tank 2 . The shell of potassium-sodium alloy ta...

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Abstract

The invention discloses a high-purity ammonia production device. The device is composed of the following components connected in sequence by pipelines: ammonia raw material tank, potassium sodium alloy tank, diaphragm compression pump, condenser, gas-liquid separation tank, and ammonia product tank. Put an activated carbon filter in the gas-liquid separation tank. In addition, the condenser and the gas-liquid separation tank are placed in the freezer. Wherein the potassium-sodium alloy tank is the core component of the present invention. Potassium-sodium alloy tanks are filled with potassium-sodium alloy - it is produced by melting high-purity metal potassium and sodium together in a certain proportion. The device can also be used in conjunction with rectification towers, distillation towers, etc. When ammonia gas passes through the potassium-sodium alloy tank, oxygen, water, carbon dioxide, carbon monoxide and other oxygen-containing gases in the gas are absorbed by the potassium-sodium alloy. In the ammonia gas passing through the device, the oxygen content, including oxygen, water, carbon dioxide, carbon monoxide, etc., is usually in the ppb (parts per billion) level, which is suitable for the production of 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. Ammonia and water can easily form ammonia water molecules (NH3·H2O) or ammonium hydroxide (NH4OH) molecules through hydrogen bonds. In other words, ammonia and water have...

Claims

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Application Information

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