Disclosed is a delivery unit (3) for an anode circuit (9) of a fuel cell system (1) for delivering a gaseous medium, in particular hydrogen, from an anode region (38) of a fuel cell (2), said delivery unit (3) comprising at least one jet pump (4) and being at least indirectly fluidically connected to the outlet of the anode region (38) by means of at least one connection line (23, 25) and being fluidically connected to the inlet of the anode region (38) by means of an additional connection line (27). According to the invention, in addition to the jet pump (4), the delivery unit (3) comprises a recirculation fan (8) and a metering valve (6) as other components, and the flow contours of the components (4, 6, 8) for the gaseous medium and/or the components (4, 6, 8) are at least almost entirely arranged in a common housing (7).

Disclosed is a delivery unit (3) for an anode circuit (9) of a fuel cell system (1) for delivering a gaseous medium, in particular hydrogen, from an anode region (38) of a fuel cell (2), said delivery unit (3) comprising at least one jet pump (4) and being at least indirectly fluidically connected to the outlet of the anode region (38) by means of at least one connection line (23, 25) and being fluidically connected to the inlet of the anode region (38) by means of an additional connection line (27). According to the invention, in addition to the jet pump (4), the delivery unit (3) comprises a recirculation fan (8) and a metering valve (6) as other components, and the flow contours of the components (4, 6, 8) for the gaseous medium and/or the components (4, 6, 8) are at least almost entirely arranged in a common housing (7).

Selective recovery of C2 to C4 hydrocarbons is achieved through the use of a converging-diverging nozzle, or de Laval nozzle. The vapor stream comprising C2 to C4 hydrocarbons is fed into an inlet of a de Laval nozzle having a throat. The vapor stream may have an initial temperature of between 0° C. and 100° C., and an initial pressure of between 200 psig and 500 psig. In the de Laval nozzle, the vapor stream expands after passing through the throat of the de Laval nozzle, producing a vapor stream having re-duced temperature and pressure. Then, C2 to C4 hydrocarbons condense from the reduced-temperature vapor stream as liquid droplets, which may be recovered. Fractionation of C2 to C4 hydrocarbons by means of a de Laval nozzle is possible; the technique allows select-ive recovery of propane from a mixture of propane and ethane.

Selective recovery of C2 to C4 hydrocarbons is achieved through the use of a converging-diverging nozzle, or de Laval nozzle. The vapor stream comprising C2 to C4 hydrocarbons is fed into an inlet of a de Laval nozzle having a throat. The vapor stream may have an initial temperature of between 0° C. and 100° C., and an initial pressure of between 200 psig and 500 psig. In the de Laval nozzle, the vapor stream expands after passing through the throat of the de Laval nozzle, producing a vapor stream having re-duced temperature and pressure. Then, C2 to C4 hydrocarbons condense from the reduced-temperature vapor stream as liquid droplets, which may be recovered. Fractionation of C2 to C4 hydrocarbons by means of a de Laval nozzle is possible; the technique allows select-ive recovery of propane from a mixture of propane and ethane.

The disclosure describes various aspects of a metal organic chemical vapor deposition (MOCVD) effluent abatement process. In an aspect, a system for removing toxic waste from an exhaust stream includes a first cold trap that operates at a first pressure and condenses toxic materials in the exhaust stream for removal as solid waste; a pump connected to the first cold trap that increases a pressure of the exhaust stream; a hot cracker connected to the pump that decomposes toxic materials remaining in the exhaust stream after the first cold trap; a second cold trap connected to the hot cracker that operates at a second pressure higher than the first pressure and condenses the decomposed toxic materials remaining in the exhaust stream for removal as solid waste; and a scrubber connected to the second cold trap that absorbs toxic materials remaining in the exhaust stream after the second cold trap.

The disclosure describes various aspects of a metal organic chemical vapor deposition (MOCVD) effluent abatement process. In an aspect, a system for removing toxic waste from an exhaust stream includes a first cold trap that operates at a first pressure and condenses toxic materials in the exhaust stream for removal as solid waste; a pump connected to the first cold trap that increases a pressure of the exhaust stream; a hot cracker connected to the pump that decomposes toxic materials remaining in the exhaust stream after the first cold trap; a second cold trap connected to the hot cracker that operates at a second pressure higher than the first pressure and condenses the decomposed toxic materials remaining in the exhaust stream for removal as solid waste; and a scrubber connected to the second cold trap that absorbs toxic materials remaining in the exhaust stream after the second cold trap.

A gas-liquid separation device comprises: an outer housing extending vertically, which is provided with a gas outlet at an upper end of the outer housing and a liquid outlet at a lower end of the outer housing; an inner housing disposed in the outer housing and extending vertically, an upper end of the inner housing being coupled to the outer housing in a sealed manner, a lower end of the inner housing being opened, with an annular space formed between the outer housing and the inner housing; a feeding tube inserted into the outer housing and communicated with the inner housing, with a cyclone mechanism between the feeding tube and the inner housing to output fluid into the inner housing as a swirling flow. The present disclosure can reduce the disturbance of the downward gas flow and the upward gas flow in the separation space, thus improving the separation efficiency.

A fluid control system includes a vortex separator, a fluid pump, an eductor, and an accumulator. The vortex separator has a fluid inlet arranged to receive a fluid, a first fluid outlet arranged output a first phase of the fluid, and a second fluid outlet arranged to output at least one of a non-condensable gas and a second phase of the fluid. The fluid pump has a pump outlet and a pump inlet that is fluidly connected to the first fluid outlet. The eductor has a first eductor inlet fluidly connected to the pump outlet, a second eductor inlet fluidly connected to the second fluid outlet, and an eductor outlet. The accumulator has an accumulator inlet fluidly connected to the eductor outlet and an accumulator outlet fluidly connected to the fluid inlet.

A method for simultaneous removal of NO and carbonic particles and inorganic dust from flue gases in a reactor with a catalyst for direct decomposition of nitric oxide located on a metallic monolith, includes tangential introduction of flue gases to the reactor circumference. Flue gases flow rotationally and downwards in the reactor in contact with an undulating surface of metallic foil located on an inner wall of the reactor chamber and in contact with the catalyst on a spiral band falling to the lower part of the reactor, and next flue gases jet direction counter-currently to a cylindrical inner chamber containing slices of the monolithic catalyst disturbing laminar flow of the flue gases jet. The reactor arrangement provides for simultaneous removal of NO and carbon particles and inorganic dust from flue gases.

A method for simultaneous removal of NO and carbonic particles and inorganic dust from flue gases in a reactor with a catalyst for direct decomposition of nitric oxide located on a metallic monolith, includes tangential introduction of flue gases to the reactor circumference. Flue gases flow rotationally and downwards in the reactor in contact with an undulating surface of metallic foil located on an inner wall of the reactor chamber and in contact with the catalyst on a spiral band falling to the lower part of the reactor, and next flue gases jet direction counter-currently to a cylindrical inner chamber containing slices of the monolithic catalyst disturbing laminar flow of the flue gases jet. The reactor arrangement provides for simultaneous removal of NO and carbon particles and inorganic dust from flue gases.