Ammonia stripper

Patent metadata

Field	Value
Publication number	US-2016130158-A1
Application number	US-201514934780-A
Country	US
Kind code	A1
Filing date	Nov 6, 2015
Priority date	Nov 7, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

An ammonia stripper has an aerator and heat exchanger tubing in a tank. The aerator and coil are preferably attached to a frame to form a removable cassette. The cassette may also include a lid for the tank. The tank is preferably rectangular and optionally can be made with the dimensions of a standard shipping container. In a process, water flows through the tank while air bubbles are produced through the aerator. A heating medium such as water flows through the heat exchanger tubing. A gas containing ammonia is withdrawn from a headspace of the tank.

First claim

We claim:

1 . An ammonia stripper comprising,
a) a tank; b) an aerator inside of the tank; and, c) heat exchanger tubing inside of the tank.

2 . The ammonia stripper of claim 1 wherein the tank defines a headspace and further comprising an outlet in communication with the headspace.

3 . The ammonia stripper of claim 2 wherein the tank is rectangular.

4 . The ammonia stripper of claim 1 wherein the tank is divided into cells by one or more internal dividers.

5 . The ammonia stripper of claim 1 wherein the tank that is rectangular and has the dimensions of a standardized shipping container.

6 . The ammonia stripper of claim 5 having internal dividers that create a plurality of cells within the tank.

7 . The ammonia stripper of claim 6 wherein each cell has an aerator and heat exchanger tubing.

8 . The ammonia stripper of claim 1 wherein the aerator and heat exchanger tubing are attached to a frame wherein the aerator, heat exchanger tubing and frame are parts of a cassette.

9 . A process for stripping ammonia from water comprising steps of,
a) providing a tank having heat exchanger tubing below a headspace; b) adding water to the tank such that the heat exchanger tube is immersed; c) producing air bubbles in the water; d) flowing a heating medium through the heat exchanger tube; e) withdrawing a gas containing ammonia from the headspace of the tank.

10 . A cassette comprising,
a) a frame; b) a heat exchanger tube attached to the frame; and, c) an aerator attached to a frame.

11 . The cassette of claim 10 further comprising a lid attached to the frame.

12 . The cassette of claim 11 wherein the frame is suspended from the lid.

13 . The cassette of claim 11 further comprising one or more latches attached to the lid.

14 . The cassette of claim 11 further comprising one or more lift fittings attached to the lid or to the frame.

15 . The cassette of claim 6 further comprising a tank sized to contain at least part of the frame.

16 . The cassette of claim 15 further comprising a lid is sized to cover at least part of the tank.

17 . The cassette of claim 16 wherein the lid is supported by the tank.

Assignees

• Anaergia Inc

Inventors

• Theodoulou Michael David
• Rollings-Scattergood Sasha
• Ghandizadehdezfuli Arman

Classifications

• C02F1/02

  by heating (methods of steam generation F22B; preheating boiler feed-water or accumulating preheated boiler feed-water F22D) · CPC title

• C02F2101/16

  Nitrogen compounds, e.g. ammonia · CPC title

• C02F1/20 Primary

  by degassing, i.e. liberation of dissolved gases (degasification of liquids in general B01D19/00; arrangement of degassing apparatus in boiler feed supply F22D) · CPC title

• B01D19/0015

  in contact columns containing plates, grids or other filling elements · CPC title

• C02F2201/002

  Construction details of the apparatus · CPC title