Regarding liquid ammonia metering
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I would like to ask how liquid ammonia is measured. Are there any flow meters for liquid ammonia? Our facility uses liquid ammonia, and we have two storage tanks with a capacity of 60 tons each; however, it’s not possible to determine the exact amount of liquid ammonia used. Is there such a flow meter for measuring liquid ammonia, or are there any other methods to track the amount of liquid ammonia used per shift?
Our ammonia synthesis plant uses two methods for measuring liquid ammonia: one is to employ a metering tank, the volume of which is calibrated, and the amount of ammonia can be determined by the liquid level； Secondly, an intermediate tank is installed, with a flow meter at its outlet; by maintaining a constant liquid level in this intermediate tank during operation, the amount of ammonia per unit time can be calculated.
We use a liquid ammonia flow meter as a reference, and in addition, we employ a tank level gauge to make calculations based on parameters such as volume and temperature.
There are two storage tanks, and measurement can be done by transferring liquid between them, which provides the most accurate results； If it is necessary to install a flow meter, a metal tube float flow meter can be used; it can withstand a pressure of up to 64 kilograms. However, it is generally difficult to achieve accurate measurement with such flow meters, and they need to be carefully calibrated according to the operating conditions.
We use magnetic flap level gauges. The volume of the liquid ammonia storage tank is fixed; by monitoring the rise and fall of the liquid level in the tank, it is possible to determine how much liquid ammonia has been used. The volume then needs to be multiplied by the specific gravity of liquid ammonia at the corresponding temperature. There is also a flow meter, but it sometimes yields errors in measurement and provides inaccurate readings. Last edited by snowdfr on 2009-2-26 21:23.]
We use mass flow meters for measuring liquid ammonia, and they work very well.
Our factory uses proton flowmeters, and they haven’t broken down after several years of use
We use magnetic flap level gauges for our storage tanks, and vortex flow meters along with an integrator for measuring flow rates. The measurement is quite accurate, and the devices also have a long service life.
Our factory also uses mass flow meters, the new ones – I’m not sure how effective they are Go back and take a look.
May I ask what the specific measurement method for liquid ammonia level gauges is? ? ?