I would like to ask everyone: what are the advantages and disadvantages of the medium-pressure method and the double-pressure method for nitric acid production? What manufacturing process is primarily used for new projects at this stage?
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I would like to ask everyone: what are the advantages and disadvantages of the medium-pressure method and the double-pressure method for nitric acid production? What manufacturing process is primarily used for new projects at this stage?
Both the medium-pressure method and the double-pressure method are processes used for producing nitric acid. The medium-pressure process using nitric acid is simple to operate and has relatively low energy consumption, but the concentration of the product is generally low. The double-pressure method can produce nitric acid at higher concentrations and has a wider range of applicability, but it involves higher equipment investment and operating costs. Currently, most new projects use the dual-pressure method, as it can meet higher product requirements and environmental standards. .
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The dual-pressure method is the mainstream, while the medium-pressure method has been largely phased out due to high energy consumption, high platinum usage, low concentration of the resulting acid, and severe equipment corrosion.
Could you please explain in detail: what are the platinum consumption levels for these two processes? What acid concentrations can be achieved with the two processes?
The platinum consumption is roughly the same in both processes, at about 0.12 g/t; the acid concentration is above 65 under double-pressure conditions, and around 55 under medium-pressure conditions
New devices are basically all dual-pressure devices