On the production of nitropropane
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Propane is first preheated in a preheater at 430–450°C, and then introduced into a reaction tower lined with glass or silica. There are several points in the reaction tower where 75% nitric acid can be injected into the propane gas inside; the reaction temperature is adjusted to 390–440°C, and the pressure is maintained at 0.69–0.86 MPa. The molar ratio of propane to nitric acid is 5:1. The gas exiting the reaction tower is cooled in a condenser, causing nitropropane and dilute nitric acid to condense. Propane and gaseous oxides are recovered by the recovery unit, with propane being reused. How to control the temperature of the reactor? Can propane preheating be used for heat exchange with the material taken out of the reactor? Is it possible to achieve self-sufficiency in terms of heat?
Is there such a production technology route for industrialization?