US 2017/0321916 A1 · Ventilation Devices and Methods

Abstract

Devices are provided for ventilating and/or removing volatile chemicals from liquid (e.g. water) stored in a liquid-containing storage tank (e.g. water-storage tank). The devices include a first fluid flow path that is physically isolated from a second fluid flow path and a convection device for moving a first fluid along the first fluid flow path toward at a desired destination and for exhausting the first fluid at the desired destination at a desired velocity. Methods are also provided for ventilating and/or removing volatile chemicals from liquid (e.g. water) stored in liquid-containing storage tanks (e.g. water-storage tanks). The methods involve blowing a first fluid through a ventilation device into a liquid-containing storage device at a velocity sufficient to achieve a desired mass transfer rate of volatile chemicals from the liquid in the liquid-containing storage device to air in the headspace and flowing the contaminated air back through the ventilation device.

Claims22

Dependent claims

A ventilation device for ventilating a liquid-containing storage tank, comprising:

a first conduit comprising a top end, a bottom end, and a first fluid flow path that extends through the first conduit from the top end to the bottom end to move fluid toward a destination;
a second conduit comprising a top end, a bottom end, and a second fluid flow path that extends through the second conduit from the bottom end to the top end to move fluid away from the destination of the first fluid flow, wherein the first and second conduits are coaxial and concentrically configured such that the second conduit is formed around the first conduit and positioned between the top end and bottom end of the first conduit;
a top divider positioned below the top end of the first conduit and above the top end of the second conduit;
and
a bottom divider positioned above bottom end of the first conduit and below the bottom end of the second conduit, wherein the first fluid flow path and the second fluid flow path are physically isolated by the top and bottom dividers.

2 more elements

A system for ventilating a liquid-containing storage tank comprising:

(a) a liquid-containing storage tank;
and
(b) a ventilation device installed onto a top surface of the liquid-containing storage tank, the ventilation device comprising:
(j) a first conduit comprising a top end, a bottom end, and a first fluid flow path that extends through the first conduit from the top end to the bottom end to move fluid toward a destination;
(v) a second conduit comprising a top end, a bottom end, and a second fluid flow path that extends through the second conduit from the bottom end to the top end to move fluid away from the destination of the first fluid flow, wherein the first and second conduits are coaxial and concentrically configured such that the second conduit is formed around the first conduit and positioned between the top end and bottom end of the first conduit;
(vi) a top divider positioned below the top end of the first conduit and above the top end of the second conduit;
and
(vii) a bottom divider positioned above the bottom end of the first conduit and below the bottom end of the first conduit, wherein the first fluid flow path and the second fluid flow path are physically isolated by the top and bottom dividers.

5 more elements

Dependencies are inferred from the claim text.

Ventilation Devices and Methods

Life of this patent

Ventilation Devices and Methods

Life of this patent

Abstract

Claims22