Where lies the biggest operational bottleneck for ultra-low load operation in the synthetic ammonia process system?
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Where lies the biggest operational bottleneck for ultra-low load operation in the synthetic ammonia process system?
What exactly is the ultra-low load method? How low? What processes are used in each work section? If these issues aren’t clarified, how can anyone determine your bottleneck?
Different processes will have different bottlenecks, so it’s necessary to analyze each situation on its own.
It should be Tawin; it cannot maintain its own heat and requires an external heat source such as an electric furnace to supply heat.
The bottlenecks in our plant at low loads are low conversion and methanation; when the load decreases, the bed temperature cannot be controlled
It should be specified what process is used in each step, as different processes will have different bottlenecks. In general, the bottleneck for operating processes such as conversion, alkoxylation (hydrocarbonation), and ammonia synthesis at low load is the difficulty in maintaining an appropriate furnace temperature.
In an ammonia synthesis system using a fixed-bed batch gas production method with a gas holder, the bottleneck at ultra-low load levels should be the compressor; that is, the lowest load is achieved when one compressor is in operation while one cycle is fully open； When using water-coal slurry gas production or other gas production processes, the bottleneck at ultra-low load should be in the gasifier; the lowest load of the gasifier corresponds to the ultra-low load of the ammonia synthesis system.