An apparatus for treating gaseous pollutants includes a gas inlet part, a first treatment unit, a second treatment unit and a non-mechanical flow-guiding device. The gas inlet part includes a gas inlet chamber and at least one guide pipe. The guide pipe communicates with the gas inlet chamber and guides an effluent stream from a semiconductor process to the gas inlet chamber. The first treatment unit is coupled to a bottom end of the gas inlet part and is configured to abate the effluent stream. The non-mechanical flow-guiding device is coupled to the first treatment unit. The flow-guiding device is configured to guide the effluent stream to move toward an opening. The second treatment unit is coupled to the flow-guiding device via the opening, receives the effluent stream from the first treatment unit and further abates the effluent stream.

A lance for powder injection resulting in reduced agglomeration, including an outer tubular member having a first end, a second end, and an inner flowpath extending from the first end to the second end; an inner tubular member having a first end, a second end, and a, inner flowpath extending from the first end to the second end, the inner tubular member disposed within the inner flowpath of the outer tubular member for providing an annular space between the outer tubular member and the inner tubular member; and one or more orifices in the inner tubular member for providing a flowpath between the annular space and the inner flowpath of the inner tubular member. Additional lances, systems, and methods are also included.

Provided is a carbon dioxide capturing apparatus comprising: a reaction tower including a carbon dioxide adsorption unit or a carbon dioxide absorption unit which adsorbs or absorbs carbon dioxide from exhaust gas; desorption tower connected to the reaction tower and including an adsorbent heating unit for heating an adsorbent circulating inside or an absorbent heating unit for heating an absorbent circulating inside; an adsorbent or absorbent which circulates in the reaction tower and the desorption tower and alternately adsorbs and desorbs carbon dioxide or alternately absorbs and desorbs carbon dioxide; and a heat exchange unit which desorbs carbon dioxide from the adsorbent on which carbon dioxide is adsorbed or the absorbent in which carbon dioxide is absorbed, through heat exchange between the adsorbent on which carbon dioxide is adsorbed and the heated adsorbent, or between the absorbent in which carbon dioxide is absorbed and the heated absorbent, wherein the adsorbent on which carbon dioxide is adsorbed and the heated adsorbent, or the absorbent in which carbon dioxide is absorbed and the heated absorbent are transferred in a co-current flow manner.

A regenerator vessel for adsorbing halogen-containing material from a regenerator vent gas stream has a plurality of catalyst nozzles disposed at a top portion of the regenerator vessel. A first gas outlet is associated with a chlorination zone, and a second gas outlet associated with a combustion zone. A drying zone is in fluid communication with an air heater and the drying zone located in a bottom portion of the regenerator vessel. The first gas outlet is configured to withdraw a first gas stream from the chlorination zone and the second gas outlet is configured to withdraw a second gas stream from the combustion zone. The top portion of the regenerator vessel has an adsorption zone having a vent gas inlet port, a vent gas outlet port, and a portion of an annular catalyst bed.

A contaminated gas stream can be passed through an in-line mixing device, positioned in a duct containing the contaminated gas stream, to form a turbulent contaminated gas stream. One or more of the following is true: (a) a width of the in-line mixing device is no more than about 75% of a width of the duct at the position of the in-line mixing device; (b) a height of the in-line mixing device is no more than about 75% of a height of the duct at the position of the in-line mixing device; and (c) a cross-sectional area of the mixing device normal to a direction of gas flow is no more than about 75% of a cross-sectional area of the duct at the position of the in-line mixing device. An additive can be introduced into the contaminated gas stream to cause the removal of the contaminant by a particulate control device.

An injection lance assembly for creating a higher degree of turbulence and dispersion of a treating agent into a fluid stream.

A regenerator vessel for adsorbing halogen-containing material from a regenerator vent gas stream has a plurality of catalyst nozzles disposed at a top portion of the regenerator vessel. A first gas outlet is associated with a chlorination zone, and a second gas outlet associated with a combustion zone. A drying zone is in fluid communication with an air heater and the drying zone located in a bottom portion of the regenerator vessel. The first gas outlet is configured to withdraw a first gas stream from the chlorination zone and the second gas outlet is configured to withdraw a second gas stream from the combustion zone. The top portion of the regenerator vessel has an adsorption zone having a vent gas inlet port, a vent gas outlet port, and a portion of an annular catalyst bed.

An apparatus for treating gaseous pollutants includes a gas inlet part, a first treatment unit, a second treatment unit and a non-mechanical flow-guiding device. The gas inlet part includes a gas inlet chamber and at least one guide pipe. The guide pipe communicates with the gas inlet chamber and guides an effluent stream from a semiconductor process to the gas inlet chamber. The first treatment unit is coupled to a bottom end of the gas inlet part and is configured to abate the effluent stream. The non-mechanical flow-guiding device is coupled to the first treatment unit. The flow-guiding device is configured to guide the effluent stream to move toward an opening. The second treatment unit is coupled to the flow-guiding device via the opening, receives the effluent stream from the first treatment unit and further abates the effluent stream.

The invention includes systems, methods, compositions, and processes for designing, manufacturing, and utilizing carbon dioxide-sequestering substrates that can fully or partially replace natural sand in coastal engineering applications. These engineered substrates can offset demand for scarce native sand resources, while also effecting the conversion of gaseous carbon dioxide to dissolved or solid-phase products thereby offsetting impacts of anthropogenic climate change.

A system for treating exhaust gas of a vessel having at least one engine equipped with a turbocharger includes a storage tank configured to store a powder for treating the exhaust gas, and a dosing assembly fluidly coupled to the storage tank. The dosing assembly is configured to inject the powder into the exhaust gas at or adjacent the turbocharger, and includes a nozzle for injecting the powder into the exhaust gas. The nozzle includes a conduit configured to transport the powder, and a conical member mounted to a distal end of the conduit and defining a central hole in fluid communication with the conduit for guiding a first portion of the powder through the central hole. The distal end of the conduit and the conical member together define an annular gap configured to guide a second portion of the powder through the annular gap.