An apparatus for dissolving gas into a liquid, comprising a housing with an inlet opening for the liquid and an outlet opening for the liquid, and a blade unit arranged inside the housing in a small cross section area between the inlet opening and the outlet opening, wherein a flow cross section for the liquid at the small cross section area is smaller than at the inlet opening, further comprising a gas inlet provided at an outside of the housing and at least one gas outlet provided in the housing on a surface of the blade unit, the at least one gas outlet being connected to the gas inlet by means of a channel, and to a method for producing such an apparatus and an use of such an apparatus.

A flammable gas diluter includes: a dilution vessel comprising an outer envelope defining a longitudinal flow passage from an inlet to an outlet; at least one air inlet for directing a flow of air into the inlet of the diluter; and a flammable gas inlet arrangement. The dilution vessel has a plurality of gas flow directing formations arranged between the flammable gas inlet arrangement and the outlet, each being at a different position along a length of the dilution vessel. At least one of the plurality of gas flow formations is an inwardly directing gas flow formation for directing gas flow away from the outer envelope and at least one of the gas flow formations is an outwardly directing gas flow formation for directing gas flow towards the outer envelope.

The production method of hot milk with or without froth, with a Venturi effect emulsifying device suitable for sending, into a mixing chamber, a flow of steam so as to aspirate, by Venturi effect, milk and air or only milk, comprises a production cycle of hot milk with froth and a production cycle of hot milk without froth being carried out by supplying an equal flow of steam of equal duration into a mixing chamber having equal volume, equal conformation and equal inlet section of the milk but a different outflow section of the milk.

A dispenser for mixing and dispensing a liquid chemical concentrate with a diluent from a container. The dispenser includes two slidable eductors one of which is also rotatable. Both a high and low flow rate can be obtained with simultaneous adjustment of concentration of the chemical concentrate. The dispenser has a high degree of accuracy of the amount of dilution of the chemical concentrate as well as positive positioning of the high and low flow rate.

The production method of hot milk with or without froth, with a Venturi effect emulsifying device suitable for sending, into a mixing chamber, a flow of steam so as to aspirate, by Venturi effect, milk and air or only milk, comprises a production cycle of hot milk with froth and a production cycle of hot milk without froth being carried out by supplying an equal flow of steam of equal duration into a mixing chamber having equal volume, equal conformation and equal inlet section of the milk but a different outflow section of the milk.

An eductor for mixing a primary fluid with a flowable secondary substance includes a primary inlet for the primary fluid, a secondary inlet for the secondary substance, an outlet and a suction chamber, A converging inlet nozzle is provided, which is arranged between the primary inlet and the suction chamber so that the primary fluid can flow from the primary inlet into the suction chamber. An outlet nozzle is provided between the suction chamber and the outlet, through which the primary fluid and the secondary substance can flow to the outlet, and the secondary inlet is provided at the suction chamber so that the secondary substance can flow from the secondary inlet into the suction chamber.

A dispenser for mixing and dispensing a liquid chemical concentrate with a dilutent from a container. The dispenser includes two slideable eductors one of which is also rotatable. Both a high and low flow rate can be obtained with simultaneous adjustment of concentration of the chemical concentrate. The dispenser has a high degree of accuracy of the amount of dilution of the chemical concentrate as well as positive positioning of the high and low flow rate.

A dispenser for mixing and dispensing a liquid chemical concentrate with a diluent from a container. The dispenser includes two slidable eductors one of which is also rotatable. Both a high and low flow rate can be obtained with simultaneous adjustment of concentration of the chemical concentrate. The dispenser has a high degree of accuracy of the amount of dilution of the chemical concentrate as well as positive positioning of the high and low flow rate.

The present invention relates to a tail gas treatment system as well as method for lowering nitrogen oxides content from the tail gas. The tail gas treatment system includes a tail gas main pipe carrying a tail gas and a tail gas bypass pipe. The treatment system also includes a centrifugal venturi sparger assembly arranged at an end of the tail gas bypass pipe. The centrifugal venturi sparger assembly extends at least substantially in the tail gas main pipe. The centrifugal venturi sparger assembly includes a vacuum venturi generator and a hollow sparger tube. The treatment system further includes a catalytic reactor to reduce nitrogen oxides content of the tail gas by catalytic reduction.

A mixing installation is provided for mixing a first agent to a liquid. The mixing installation includes a dosing assembly and a first agent supply conduit. The dosing assembly includes a venturi arrangement and a first dosing device between the first agent supply conduit and the venturi arrangement. The first dosing device includes a first agent passage and a first dosing mandrel having a first dosing pin that extends in the first agent passage, wherein the first dosing mandrel is axially slidable in its axial direction with respect to the first main body over a first release stroke by pulling between a dosing position in which the first dosing pin extends inside the first agent passage to define a first ring shaped dosing channel around the first dosing pin, and a retracted position in which the first ring shaped dosing channel is cancelled.