A kind of method that microreactor is continuously synthesizing to N- normal-butyl thiophosphoryl triamines

The invention discloses the methods that successive reaction in a kind of microreactor prepares normal-butyl thiophosphoryl triamine, n-butylamine and phosphorus thiochloride are uniformly mixed respectively with solvent first, then film is added to by feed pump to disperse in microreactor, n-butylamine is distributed in the form of microlayer model in the mixed liquor of phosphorus thiochloride, normal-butyl phosphorothioic dichlorides are obtained by the reaction at a certain temperature, while are passed through the acid binding agent that ammonia is hydrogen chloride；Reactant is then delivered to tubular microreactors, ammonia is continuously passed through to reactor by gas distributor, obtains normal-butyl thiophosphoryl triamine and ammonium chloride；Product is collected finally by kettle is collected, by operations such as crystallization, filtering, dryings, obtains product.The present invention method work flow it is short, reaction condition is mild, technological operation is simple, by-product is few, low energy consumption, high income, it is at low cost the advantages that, be suitble to scale industrial production.