Ammonia replacement method for maintenance of liquid ammonia tank
An ammonia gas replacement, liquid ammonia tank technology, applied in the container filling method, the container discharge method, gas/liquid distribution and storage, etc., can solve the negative pressure instability of the liquid ammonia tank, low pressure in the tank, and easy negative pressure and other problems, to reduce the workload of replacement, save time, and improve safety.
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[0018] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.
[0019] The invention provides a liquid ammonia tank maintenance ammonia replacement method, comprising the following steps:
[0020] (1) When the liquid level in the liquid ammonia tank drops to the lowest level, close the interface between the liquid ammonia tank and the outside world, connect the nitrogen filling port on the top of the liquid ammonia tank with a fire hose, inject water into the liquid ammonia tank to dilute, and test the liquid ammonia at the same time. The water level of the ammonia tank, when the water level in the liquid ammonia tank reaches 3.8m, continue to inject water, open the sewage discharge door at the bottom of the liquid ammonia tank to drain to the ditch, and at the same time detect the ammonia concentration at the place where the sewage discharge door is discharged to the ditch. Stop water injectio...
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