An Ammonia Converter and Ammonia Synthesis Process Using Molten Salt as A Heat Transfer Medium
In addition to being used in the production of fertilizers and chemical products,as a denitration agent and refrigerant,ammonia can also serve as a hydrogen carrier for hydrogen energy storage,making it an important form of clean and low-carbon fuel in the future.The ammonia synthesis reaction is a reversible exothermic reaction,which is limited by the reaction equilibrium.The raw materials of hydrogen and nitrogen cannot be completely converted into ammonia product all at once,and a cyclic reaction is needed to improve the product yield.The key to energy-saving in ammonia synthesis lies in improving the single pass conversion rate of reaction under lower reaction pressure conditions.The existing ammonia converter has low single pass conversion rate and high energy consumption.A variable temperature ammonia converter using molten salt as a heat transfer medium can achieve overall optimal reaction temperature operation for catalysts with different bed heights.When the concentration of reactants at the inlet of the converter is high,high temperature is used to increase the reaction rate.The reaction rate is improved by high temperature at the inlet where the reactant concentration is high,and the equilibrium conversion rate is improved by low temperature at the outlet where the product concentration is high.A variable temperature ammonia converter using molten salt as a heat transfer medium has high single pass conversion rate,significant energy-saving,consumption reduction and economic benefits,and is worthy of engineering research and promotion.
synthetic ammoniaammonia convertervariable temperature ammonia converter with molten salt as the heat transfer medium
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