A multifunctional C.sub.4F.sub.7N/CO.sub.2 mixed gas preparation system is disclosed. The C.sub.4F.sub.7N heat exchanger is used to heat and vaporize C.sub.4F.sub.7N input through the C.sub.4F.sub.7N input port; the CO.sub.2 heat exchanger is used to heat and vaporize CO.sub.2 input through the CO.sub.2 input port; the C.sub.4F.sub.7N/CO.sub.2 mixing pipeline structure is used to mix the heated C.sub.4F.sub.7N and heated CO.sub.2, and the C.sub.4F.sub.7N/CO.sub.2 mixed gas output pipeline structure is used to output the C.sub.4F.sub.7N/CO.sub.2 mixed gas. The C.sub.4F.sub.7N/CO.sub.2 mixing pipeline structure comprises a C.sub.4F.sub.7N/CO.sub.2 dynamic gas preparation pipeline structure and a C.sub.4F.sub.7N/CO.sub.2 partial pressure mixing pipeline structure; the C.sub.4F.sub.7N/CO.sub.2 partial pressure mixing pipeline structure includes partial pressure mixing tanks for mixing the CO.sub.2 and the heated C.sub.4F.sub.7N of certain pressures; and a plurality of partial pressure mixing tanks are arranged in parallel. A multifunctional C.sub.4F.sub.7N/CO.sub.2 mixed gas preparation method is also disclosed.

A gaseous fuel-air mixer includes an outer shell, an inner shell, and a fuel chamber rib. The outer shell includes an air intake and a fuel intake. The air intake is configured to receive air. The air intake has an air outlet. The fuel intake has a fuel inlet that is configured to receive fuel. The inner shell includes an inner shell intake that is configured to separately receive the air from the air outlet and the fuel from the fuel intake and to provide a gaseous fuel-air mixture. The inner shell cooperates with the outer shell to define a fuel intake collecting chamber that is configured to receive the fuel from the fuel inlet and a fuel intake concentrating chamber that is configured to receive the fuel from the fuel intake collecting chamber and provide the fuel to the inner shell intake.

A treatment gas supplying apparatus includes: a first mixed gas producing section that is configured to produce a first mixed gas in which a first gas and a treatment gas having a treatment effect are mixed with each other in a first ratio; and a second mixed gas producing section that is configured to produce a second mixed gas in which a second gas and the treatment gas are mixed with each other in a second ratio, the second ratio being within a constant difference from the first ratio.

A mixer for separate streams of gas includes a center stream of a first gas and a co-axial stream of a second gas injected at an angle to the center stream and filling an annulus around the center stream. The mixer may further include a feed zone wherein the first gas is introduced into the mixer as the center stream and the second gas is introduced into the mixer as the co-axial stream filling the annulus around the center stream; a mixing zone wherein the first gas and the second gas mix with no recirculation zones to form a mixture; and a diffusion zone for advancing the mixture from the mixing zone. Corresponding or associated methods for mixing materials are also provided.

Systems and methods are described for dissolving ammonia gas in deionized water. The system includes a deionized water source and a gas mixing device including a first inlet for receiving ammonia gas, a second inlet for receiving a transfer gas, and a mixed gas outlet for outputting a gas mixture comprising the ammonia gas and the transfer gas. The system includes a contactor that receives the deionized water and the gas mixture and generates deionized water having ammonia gas dissolved therein. The system includes a sensor in fluid communication with at least one inlet of the contactor for measuring a flow rate of the deionized water, and a controller in communication with the sensor. The controller sets a flow rate of the ammonia gas based on the flow rate of the deionized water measured by the sensor, and a predetermined conductivity set point.

A method of for mixing gases is described. The gases may include a first and a second gas wherein a gas mixing system accepts the gases and operates in a plurality of modes of operation to produce a discharge gas including a mixture thereof, and the second gas may be supplied without the first gas, and the first gas may be supplied without the second gas. The gas mixing system may be integrated with a gas processing system to produce a biogas-related product. The gas mixing system may be a compressor, a jet compressor, an ejector, an eductor, venturi jet pump, eductor-jet pump, and/or a thermocompressor, that uses a first stream of high-pressure gas to entrain a relatively lower pressure second gas, mixes the two, and discharges a third gas mixture that is of a sufficiently elevated pressure to be supplied to other areas of a production facility.

A centrifugal blower system has internal gas mixing capability.

A waste heat boiler system for cooling a process gas, including a first shell-and-tube heat exchanger for cooling relatively hot gas down to relatively warm gas, an intermediate chamber for receiving gas, cooled down to relatively warm gas, coming out of tubes of the first heat exchanger, and a second shell-and-tube heat exchanger for cooling relatively warm gas further down to relatively cool gas. The intermediate chamber is provided with an outlet fluidly connected to a bypass channel for allowing a part of the relatively warm gas to bypass tubes of the second heat exchanger. The bypass channel and tubes of the second heat exchanger are both fluidly connected with a mixing chamber for mixing together relatively warm gas flowed from the intermediate chamber into the mixing chamber via the bypass channel and relatively cool gas come out of the tubes of the second heat exchanger.

A gas mixing system for semiconductor fabrication includes a mixing block. The mixing block defines a gas mixing chamber, a first gas channel fluidly coupled to the gas mixing chamber at a first exit location, and a second gas channel fluidly coupled to the gas mixing chamber at a second exit location, wherein the first exit location is diametrically opposite the second exit location relative to the gas mixing chamber and the second gas channel has a bend of 90 degrees or less between an entrance of the second gas channel and the second exit location.

The present invention relates to a mixing device (10) for mixing at least anode exhaust gas (AEG) with cathode exhaust gas (CEG) from a fuel cell stack (110) of a fuel cell system (100), having a cathode exhaust gas line (30) with a cathode exhaust gas connection (32) for fluid-communicating connection with a cathode exhaust gas section (134) of a cathode section (130) of the fuel cell stack (110) and an anode exhaust gas line (20) with an anode exhaust gas connection (22) for fluid-communicating connection with an anode exhaust gas section (124) of an anode section (120) of the fuel cell stack (110), characterised in that the anode exhaust gas line (20) is arranged within the cathode exhaust gas line (30) and has a closed anode exhaust gas line end (24) and at least two anode exhaust gas outlets (21) into the cathode exhaust gas line (30) with outlet directions (OD) radial to the anode exhaust gas line axis (AEL) and to the cathode exhaust gas line axis (CEL), wherein, further downstream of the anode exhaust gas line end (24), the cathode exhaust gas line (30) transitions into a mixed exhaust gas line (40) with a mixed exhaust gas connection (42) for fluid-communicating connection with a burner inlet (152) of an afterburner (150) of a fuel cell system (100).