Plant for the production of monochloramine and process thereof

• US 10,640,379 B2
• Filed: 11/13/2018
• Issued: 05/05/2020
• Est. Priority Date: 10/28/2014
• Status: Active Grant

• Current Assignee: Acel S.R.L.
• Original Assignee: Acel S.R.L.
• Inventors: Gatti, Marco, Cauzzi, Daniele Alessandro
• Primary Examiner(s): Young, Natasha E
• Application Number:
  US16/189,852
• Publication Number:
  US 20190077662A1
• Time in Patent Office: 539 Days
• CPC Class Codes: C01B 21/091 Chloramine, i.e. NH2Cl or dichloramine, i.e. NHCl2
• CPC Class Codes: C02F 1/76 with halogens or compounds of halogens C02F1/4674 takes precedence

Abstract

A process for the production of monochloramine characterized in that it provides for drawing a portion of water intended for the user and exclusively using the portion for preparing the monochloramine solution. The portion intended for the reaction of formation of monochloramine is subjected to a treatment on osmotic membrane, obtaining osmotized water. Subsequently, there is the reaction of the water with reagents in a reactor. In the reaction step, inside the reactor, the osmotized water enters from a first orifice (C) via a solenoid valve with micrometric regulation (EV1). Inside the same reactor, the base chemical products enter via the respective orifices A and B. The base chemical products enter due to the action of metering pumps (e.g. peristaltic pumps). The system is managed by PLC.

Claims

1. A plant for the production of monochloramine, comprising:

a) one osmotic plant;

the osmotic plant comprising a pump, a plurality of osmotic membranes, and a dilution circuit;

wherein the pump is positioned inside the osmosis plant, which receives service water and pressurizes the service water in order to overcome osmotic pressure, which is required in order for the water to pass through the osmotic membranes, giving the residue required to feed the dilution circuit;

b) one reaction reactor comprising a first orifice, a charging solenoid valve, two further orifices of reagents set for the reaction, a lower base, an upper base, an outlet mouth, and a produced monochloramine storage tank;

wherein in the one reaction reactor, the osmotized water enters into the first orifice via micrometric regulation of the charging solenoid valve;

wherein said reactor is a cylindrical container whose lower base comprises the outlet mouth for the connection with the produced monochloramine storage tank, while the upper base of the reactor comprises the two further orifices through which the reagent and reagent solutions enter which take part in the reaction;

the aforesaid orifice being laterally arranged in a lateral cylindrical jacket of the reactor with non-radial direction;

a point inside the reactor identifies the point of contact between the introduction of the reagent and of the osmotized water; and

c) the one produced monochloramine storage tank, in which the monochloramine solution produced by the reactor is stored and made available for metering to user(s).

2. The plant according to claim 1, wherein at entrance, there is a pressure control reducer, with which said pressure is controlled to values of 2-5 bar.