Process for manufacturing chloramine
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorAlbert J. Colli
Life of this patent
Estimating the term…
Abstract
Chloramine is continuously manufactured on a large scale by reacting gase chlorine with gaseous ammonia. Recovery of the chloramine is then effected by purging the area adjacent to the reactor discharge zone with either an inert gas or ammonia, and entraining the product steam in a high velocity jet of a cooling gas.
Claims20
A process for the continuous production of chloramine comprising:
- introducing chlorine, ammonia, and an inert gas into a reactor tube;
- heating the reactor tube;
- turbulently flowing said gases through said reactor tube;
- reacting the chlorine and the ammonia to form the chloramine product;
- introducing a purging gas into the reactor discharge zone;
- entraining the product stream in a high velocity jet of a cooling gas;
- and
- recovering the chloramine.
In a continuous process for the manufacture of chloramine, wherein gaseous chlorine and a gaseous inert diluent such as nitrogen are axially introduced into the entrance zone of a heated elongated reactor through two coaxial inlets such that said gaseous chlorine flows through the central inlet while said inert diluent gas flows through the outer inlet, gaseous ammonia is simultaneously introduced into the entrance zone through at least one inlet placed radially to and upstream of said chlorine inlet and situated so that said gaseous chlorine is discharged into a flowing body of ammonia, then reacting said chlorine and said ammonia so as to produce chloramine and the by-product ammonium chloride, the improvement which comprises:
- sizing the reaction zone of said reactor so that it is between 10 and 22 tube diameters in length;
- heating said reaction zone to above the vaporization temperature of ammonium chloride and below 720.degree. F.;
- turbulently flowing said ammonia, chlorine and inert gas through said reactor so that complete reactant mixture is achieved;
- thoroughly reacting said reactants;
- purging the area adjacent to the discharge zone with either an inert gas or ammonia to prevent the deposition and degradation of ammonium chloride by heated surfaces;
- and
- entraining the stream discharging from the reactor in a high velocity jet of a cooling gas of either an inert gas or ammonia to effectively reduce the temperature of the process stream and to carry said process stream to a filter system.
Dependencies are inferred from the claim text.