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2 ημέρες πριν · Hazards of Ammonia (NH3) Gas. While ammonia is indispensable in many industrial processes, it poses several health risks: Respiratory Issues: Inhalation of ammonia gas can cause coughing, shortness of breath, and chest pain. Prolonged exposure may lead to chronic respiratory problems, such as bronchitis or pneumonia.
Propane alone will pressurize to 250psi at a temperature near 120°F; however, a propane/NH3 mix pressurizes to 250psi at a much lower temperature between 70-80°F. Table 1 shows the relationship between temperature and vapor pressure of these two compounds in a closed container.
The knock and rough limit crossover occurs at ~13.5:1 for E85 and ~12:1 for gasoline. E85/NH3 has higher knock limit and allows for a higher maximum compression ratio and thermal efficiency. Gasoline/NH3 has a lower roughness limit and allows for a slightly more fuel mixture flexibility.
Table A-3 — Ammonia Liquid and Vapor Properties — IP Units at various isobars using equations and constants of REFPROP (Version 7.0) with –40°F zero datums for saturated liquid entropy and enthalpy.
Figures and tables showing how the properties of liquid and gaseous ammonia changes along the boiling/condensation curve (temperature and pressure between triple point and critical point conditions). An ammonia phase diagram are included.
prevent ammonia gas from rising in the air, mixing and dissipating more easily. Ammonia gas can react with moisture in the air to form aerosols of ammonium hydroxide (NH 4 OH), a corrosive, alkaline compound, which can cause inhalation, dermal, and ocular hazards.
If you suspect that a propane cylinder contains or has contained anhydrous ammonia, exercise extreme caution and restrict access to the area. It can be dangerous to move the cylinder due to the unknown integrity of the cylinder's service valve.
