Ammonia

HIGH PURITY AMMONIA GAS

Properties of ammonia: Colorless gas, pungent odor, less dense than air, easily soluble in water (and fast). At room temperature, one volume of water dissolves about 700 volumes of ammonia gas. The following reactions occur in water solubility to give an aqueous solution its alkalinity: NH₃+H₂O====NH₃·H2O(NH4OH)====NH4 +OH- (reversible) The red fountain experiment is modelled. Amido ₃ (NH4OH)===(△) AmidO ↑+ amidO is a weak base and very unstable due to decomposition or heat: Amido ·H2O(NH4OH)===(△) Amido

Main application areas

Liquid ammonia, as a basic chemical raw material, has a wide range of applications, covering multiple industries such as agriculture, chemical industry, refrigeration, metallurgy, etc

-In the field of agriculture, the core raw material for fertilizer production is liquid ammonia, which is a key raw material for producing nitrogen fertilizers such as urea, ammonium bicarbonate, ammonium nitrate, and ammonium phosphate. These nitrogen fertilizers account for more than 60% of the total global fertilizer production and are crucial for improving crop yields and ensuring food security. Partial liquid ammonia can also be directly used as fertilizer, but the dosage and application method need to be strictly controlled.

-Chemical industry - Basic chemical intermediates: Liquid ammonia is used to produce various chemical products such as nitric acid, soda ash, acrylonitrile, caprolactam, aniline, etc. These products are further applied in industries such as plastics, rubber, fibers, pharmaceuticals, dyes, explosives, etc.

-Refrigeration field - industrial refrigerant: Liquid ammonia is widely used in large-scale industrial refrigeration systems, such as food processing (freezing and refrigeration of meat and aquatic products), cold chain logistics, textile printing and dyeing, and material cooling in chemical production, due to its advantages of high latent heat of vaporization, high refrigeration efficiency, and low cost. Its cooling temperature range can cover -33 ℃ to 0 ℃, suitable for various low-temperature demand scenarios.

-Other fields: In the metallurgical industry, liquid ammonia can be used for nitriding processes in metal heat treatment to improve metal surface hardness and wear resistance; In the field of environmental protection, it can be used for flue gas denitrification to remove nitrogen oxides from industrial waste gas through selective catalytic reduction reactions; In addition, liquid ammonia can also be used as a component of rocket propellants and as a chemical reagent in laboratories.

Storage and transportation requirements

-Storage requirements: Liquid ammonia requires the use of dedicated low-temperature atmospheric pressure storage tanks or high-pressure storage tanks, made of corrosion-resistant materials such as stainless steel and carbon steel (treated with anti-corrosion), and equipped with safety devices such as pressure monitoring, liquid level monitoring, safety valves, emergency shut-off valves, etc; The storage area should be cool and ventilated, away from fire sources, heat sources, and residential areas. Fire and explosion prevention, leak detection and alarm, and emergency absorption devices should be installed. It is strictly prohibited to mix with acids, halogens, oxidants, etc.

-Transportation requirements: Liquid ammonia must be transported by qualified enterprises and specialized transport vehicles (tank trucks) with hazardous chemical transportation qualifications. The tanks must be inspected and equipped with emergency protective equipment; During transportation, it is necessary to comply with traffic control regulations and avoid staying in densely populated areas. Drivers and escorts must have corresponding qualifications and be familiar with emergency response procedures; During transportation, it is necessary to regularly check the sealing condition, pressure, and liquid level changes of the storage tank to prevent leakage.

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