High-purity ammonia on-site manufacturing method and manufacturing device

Abstract

A high purity ammonia on-site manufacturing method and a manufacturing device thereof are provided, which relate to the manufacturing and supplying of the high purity ammonia. The high purity ammonia on-site manufacturing device is composed of an extracting device enabling the high purity ammonia (99.999%) to produce ultra-high purity ammonia (99.99999%) products via an absorber and an on-site supplying device supplied to a user terminal after evaporating the products; wherein the high purity ammonia (99.999%) is extracted by storing low purity ammonia (99.7%) raw materials in a plurality of multi-section large-capacity vertical tanks, using the boost devices arranged on the tank themselves to separating the high boiling point impurities, such as moisture, hydrogen sulfide, carbon dioxide, etc., and using a plurality of heat exchangers to carry out ammonia liquefaction-evaporation process separation-low boiling point impurity processes, such as carbon oxide, methane, etc.

Description

technical field [0001] The invention relates to a method and apparatus for onsite production of high purity ammonia, and in particular to a method and apparatus for onsite production and supply of high purity ammonia. Background technique [0002] With the rapid development of the semiconductor industry and LED manufacturing industry at home and abroad, the usage of high-purity ammonia has increased dramatically. Usually high-purity ammonia is produced by gas manufacturers and filled into various containers (47L containers, 470L containers, 930L containers, ISO tanks) for supply, so the current situation is that excessive container costs and logistics costs are consumed. [0003] Commonly used methods for refining high-purity ammonia include distillation using prilling towers and selective application of partially melted adsorbents. [0004] However, the above method leads to an unnecessary increase in investment costs, thereby limiting economic capacity, and it is unreason...

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Problems solved by technology

[0009] Therefore, the present invention is a technical solution disclosed in order to solve unreasonable problems in the prior art, and its purpose is to provide an on-site manufacturing method and manufacturing device of high-purity ammonia, which can be used by users who use more than a certain amount of high-purity ammonia Build a high-purity ammonia manufacturing device in the ground or adjacent to the ground, and supply high-purity ammonia on-site through the pipeline (Pipeline)

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