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 sdestination 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.

Ventilation devices and methods

A method for contacting gases and liquid droplets for mass and/or heat transfer and a spray tower are disclosed, in which liquid is injected at a number of levels in counterflow to the gas, the gas being fed through at least two inlet openings in the shell of the spray tower. In this case, in order to reduce the differences in the contact duration, the flow direction of the gas at the inlet openings points into the internal region of the spray tower, which has a diameter of greater than or equal to 12 m, in particular greater than 20 m, such that the flow directions of the at least two gas streams intersect on their extension inside the spray tower, in particular at the center of the spray tower at up to half the spray tower radius downstream of the center of the spray tower.

Method and spray tower for contacting gases and liquid droplets for mass and/or heat transfer

Um eine Rauchgasreinigungsanlage der gattungsgemasen Art dahingehend weiterzubilden, dass auch bei grosen Anlagen der Einsatz nur eines Absorber ausreichend ist, wird mit der Erfindung eine Rauchgasreinigungsanlage mit einem Wirbelschichtreaktor mit einer Rauchgaseinlasseinheit und einer Rauchgasauslasseinheit vorgeschlagen, bei welcher an die Rauchgaseinlasseinheit eine Duseneinheit anschliest, die mit Dusen bestuckt ist, wobei die Dusen einen unterschiedlichen Querschnitt aufweisen, In order to develop a flue gas cleaning system of the generic type to the extent that even for large systems, the use of only one absorber is sufficient, a flue gas cleaning system with a fluidized bed reactor with a flue gas inlet unit and a Rauchgasauslasseinheit is proposed with the invention in which adjoins a nozzle unit at the flue gas inlet unit with nozzle is fitted, wherein the nozzles have a different cross section,

Exhaust gas purification assembly with nozzle variation

The flue gas purification plant (10) has a fluidized bed reactor (11) with a flue gas inlet unit and a flue gas outlet unit, where the flue gas outlet unit has two flue gas outlet ports. The flue gas outlet ports are arranged with each other in an angular manner. The flue gas outlet unit is formed as front lid with two port pipe connections.

Exhaust gas purification assembly with exhaust unit

The aim of the invention is to devise a flue gas purification system which allows the use of only one absorber even for large systems. The flue gas purification system according to the invention comprises a fluidized-bed reactor having a flue gas inlet unit and a flue gas outlet unit, a nozzle unit being mounted downstream of the flue gas inlet unit. Said nozzle unit is provided with nozzles, said nozzles having different cross-sections.

Flue gas purification system with different nozzles

A tower (3) has at least two gas duct (12) inlets (2) at an angle calculated to provide a gas distribution pattern as the liquid droplets descend from spray jets at a higher level to ensure a long contact duration between the gas and liquid.

Process and spray tower for contactacting gases and liquid droplets during mass and/or heat transfer

The invention relates to a method for contacting gases and liquid droplets for the tissue and/or heat exchange, comprising a spray tower (3), where liquid is being sprayed into a plurality of levels thereof and in a counter-current to the gas. The gas is supplied through at least two inlets (2) located in the outer covering of the spray tower (3). In order to reduce the differences in contact duration, the flow direction of the gas at the inlets (2) points inside the interior of the spray tower, which has a diameter of greater than or equal to 12 m, particularly greater than 20 m, so that the flow directions of the at least two gas flows cross in their prolongation inside the spray tower (3), in particular in the center of the spray tower until half the radius of the spray tower behind the center of the spray tower.

Hermann Maier

Papers

Process and spray tower for contactacting gases and liquid droplets during mass and/or heat transfer

Method and spray tower for contacting gases and liquid droplets for mass and/or heat transfer

Method and spray tower for contacting gases and liquid droplets for the tissue and/or heat exchange