Technology for jointly producing ammonium sulfate and chloromethane
A monochloromethane and combined production technology, applied in the field of chemical technology, can solve the problems of reducing the purity of hydrogen chloride gas, etc., and achieve the effect of being suitable for large-scale production, increasing energy consumption, and continuous feeding
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Embodiment 1
[0045] The present embodiment provides a kind of technology of joint production ammonium sulfate and monochloromethane, as attached figure 1 As shown, specifically:
[0046] S1, the concentrated sulfuric acid of the 98wt% of 5349 grams of ammonium chloride and 11000 grams is added in the premixing pool of belt stirring and strainer and carry out normal pressure premixing, the ratio of the amount of substance of ammonium chloride and sulfuric acid is 1:1.1, pre-mixed The mixing temperature is 15°C.
[0047] S2. The premixed ammonium chloride sulfuric acid solution is continuously sent into the tubular reactor with a steam jacket by a small pump, and a metathesis reaction occurs to generate ammonium bisulfate and hydrogen chloride. This reaction is an endothermic reaction, and the required heat is obtained by The steam jacket of the tubular reactor is provided, the reaction temperature is 110°C, and the pressure is 0.2MPa. The obtained ammonium bisulfate solution is evaporated ...
Embodiment 2
[0058] The present embodiment provides a kind of technique of jointly producing ammonium sulfate and monochloromethane, with embodiment 1, specifically:
[0059] S1. Add 5349 grams of ammonium chloride and 24500 g of 60wt% sulfuric acid into the premixing tank with stirring and filter screen for normal pressure premixing, the ratio of the amount of ammonium chloride and sulfuric acid is 1:1.5, premixing The temperature is 30°C.
[0060]S2. The premixed ammonium chloride sulfuric acid solution is continuously pumped into a tubular reactor with a steam jacket, and a metathesis reaction occurs to generate ammonium bisulfate and hydrogen chloride. This reaction is an endothermic reaction, and the required heat is provided by the tube. The steam jacket of the type reactor is provided, the reaction temperature is 90°C, and the pressure is 0.7MPa. The obtained ammonium bisulfate solution is evaporated and concentrated, cooled and crystallized at 10°C, filtered and washed to obtain so...
Embodiment 3
[0066] The present embodiment provides a kind of technique of jointly producing ammonium sulfate and monochloromethane, with embodiment 1, specifically:
[0067] S1, 5349 grams of ammonium chloride and 13067 90wt% concentrated sulfuric acid are added into the premixing tank with stirring and filter screen for normal pressure premixing, the ratio of the amount of ammonium chloride and sulfuric acid is 1:1.2, pre The mixing temperature is 40°C.
[0068] S2. The premixed ammonium chloride sulfuric acid solution is continuously pumped into a tubular reactor with a steam jacket, and a metathesis reaction occurs to generate ammonium bisulfate and hydrogen chloride. This reaction is an endothermic reaction, and the required heat is provided by the tube. The steam jacket of the type reactor is provided, the reaction temperature is 145°C, and the pressure is 1.3MPa. The obtained ammonium bisulfate solution is evaporated and concentrated, cooled and crystallized at 38°C, filtered and wa...
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