What is Ammonia (NH3)? Why use Vaporizer?

 

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1. What is Ammonia? – Basic knowledge

Ammonia (NH3) is a colorless gas with distinct odor. It is composed of single Nitrogen atom and three Hydrogen atoms. Boiling point of NH3 is -33.4℃. When vaporizes, a great amount of heat is absorbed.

Molecular structure of ammonia

Vaporization heat exchange of ammonia is the second largest after H2O. Compared to H2O that vaporizes at 100℃, ammonia generates a large amount of heat exchange at a low temperature of minus 33.4 ℃, and thus it is also used as a refrigerant. On the other hand, due to the large heat exchange of vaporization, if the heat source is not sufficient, vaporization becomes unstable and frost on the cylinder frequently occurs when gas is used for natural vaporization.
Ammonia, which does not generate CO2 when burned, has been attracting attention as a Green Gas in recent years, and more various uses are being studied.

2. What is the major usage of Ammonia?

Ammonia is seen in various field. It is a building-block chemical and a key component of many products including plastics, fabrics, etc. 80% of Ammonia produced is used for Fertilizer. More familiar use of ammonia is cleaning products for kitchen, bath, toilets and else.

And following are seen in the industries…

Refrigerant

  • It is used as a refrigerant because it emits heat of vaporization next to water at minus 33.4 ℃

Energy Carrier for Hydrogen

  • Hydrogen is attracting attention as carbon-free fuel just like Ammonia.
  • Boiling point of Hydrogen is extremely low and thus liquefiing hydrogen for transportation is a big task. While on the other hand, Ammonia with a high hydrogen density can be easily liquefied and stored.

Fuel for Thermal Power Generation

  • By co-firing fossil fuels and ammonia, CO2 emissions can be significantly reduced.

SCR(Selective Catalytic Reduction) / Nox Removal / Denitration

  • Using ammonia as the reducing agent.

Metal Nitriding (Heat treatment / Thermal treatment)

  • Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case-hardened surface.
  • Among several method of Nitriding, Ammonia is used for Gas Nitriding method.

3. Negative Aspect of Ammonia

Ammonia is highly toxic and dangerous. And therefore it must be extra carefully to prevent gas leak.

Ammonia has alkaline properties and is corrosive. Valves, piping and the gas devices of LPG / NG cannot be used as they will be corroded. For safety operation of Ammonia, anti-corrosive material must be equipped.

toxic and corrosive

4. Why do we need vaporizers for Ammonia?

Many of NH3 users take gas by natural vaporization from tanks / cylinders. If the consumption is not continuous and not in a large amount, this may be sufficient.

However

Photo of Ammonia cylinder freezed by exhanging heat with ambient temperature

As mentioned above, Ammonia absorbs a large amount of heat when vaporizing. Therefore, if the heat source is not sufficient, vaporization becomes unstable and frost on the cylinder frequently occurs when gas is used for natural vaporization.

This picture shows frost on the Ammonia cylinder surface caused by too much heat exchange. When you see this, natural vaporization is not catching up with NH3 gas consumption. Vaporization is slowed down and thus Ammonia gas supply is not stable. You need to take some counter measurement or the business operation will be interrupted before long.

Temporally Solutions…?

Put the cylinder in the water or pour hot water on cylinder? Effective but not recommendable. This will induces rust on cylinder by exposing to water. Cylinder would be damaged afterwards… What if Ammonia may leak?

Heating the cylinder with fire? NEGATIVE!! Too dangerous!

These cannot be good solution…

AMMONIA VAPORIZER : Fundamental solution for Safe and Stable Ammonia gas supply

There are 2 other safer solutions against this problem of Ammonia vaporization.

Image to explain why vaporizer is the best solution for stable ammonia gas supply

Vaporizer enables stable vaporization of Ammonia gas anytime and thus it realize safety operation of business.

KAGLA’s Ammonia vaporizers are all designed in Anti-Corrosive structure. And the related Ammonia gas equipment are also available.

Structural differences between Ammonia vaporizer and LPG vaporizer

Links – Overseas Products

Ammonia (NH3) Vaporizers

  • Product photo of AX5 Ammonia Vaporizer-NH3 vaporizer

    AX5 Ammonia Vaporizer
    (NH3 vaporizer)

     

  • Product photo of DX Ammonia-NH3 Vaporizer-EVA-10DX

    DX Ammonia (NH3) Vaporizer : EVA-10DX

     

Liquid Changeover Regulators / KAGLA Pressure Regulators

  • Product photo of LRA-SE I and II-Liquid Changeover for Ammonia

    LRA : LRA-SE I / II
    (Liquid Changeover for Ammonia)

     

  • Product photo of Kagla KR-A series-Ammonia Pressure Regulator

    Kagla KR-A series
    (Ammonia Pressure Regulator)