In order to provide a flow device which is of simple construction and is operable reliably and in an energy-efficient manner, it is proposed that the flow device comprise the following: a plurality of flow segments which each comprise one or more flow bodies and through which a stream of raw gas is arranged to flow for removing impurities in a cleaning mode, wherein the stream of raw gas is arranged to be supplied to the flow segments via a raw gas supply system and wherein a stream of clean gas that has been cleaned by means of the flow segments is removable from the flow segments by means of a clean gas removal system; a regeneration device for regenerating the flow segments, wherein the regeneration device comprises a docking device for establishing a temporary connection between one or more flow segments that are to be regenerated on the one hand and a heating device and/or a flushing device of the regeneration device on the other hand.

A system for assembling an exhaust after-treatment assembly having a plurality of exhaust after-treatment blocks is described. Each of the plurality of exhaust after-treatment blocks is disposed adjacent to at least one other exhaust after-treatment block. Each exhaust after-treatment block has one or more catalyst substrates. Each catalyst substrate includes a first face, a second face, and a plurality of side faces. The system includes at least one flange member to surround the one or more catalyst substrates about the side faces. The system further includes a locking arrangement including one or more clips on the flange member and a bracket member configured to engage with the one or more clips in the flange members of the adjacent exhaust after-treatment blocks.

Systems and methods for controlling a valve for directing an exhaust gas stream through an exhaust duct having a first after treatment device and a second after treatment device in an exhaust system. The method includes receiving sensor signals from a sensor coupled to the second after treatment device. The method includes processing the sensor signals to determine a temperature of the second after treatment device, and determining a position for the valve based on whether the temperature exceeds a pre-defined threshold for the temperature of the second after treatment device. The method includes outputting a control signal to move the valve to a first position in which the exhaust gas stream flows through a first portion of the first after treatment device or a second position in which the exhaust gas stream flows through a second portion of the first after treatment device based on the temperature.

Systems, methods, and building block modules for modular power generation facilities are disclosed. A method of erecting a modular power generation facility includes producing a plurality of primary modules, each including a housing adapted from an intermodal shipping container having posts, rails, and sills connected together by shipping container corner castings; shipping the primary modules, which include gen-set modules and a switchgear module, to an installation location; positioning the primary modules in a vertical stack; attaching the primary modules to one another in the vertical stack; interconnecting the engine-generators of the one or more gen-set modules with the switchgear of the switchgear module; and operating the engine-generators and the switchgear to provide electricity to a transformer connected to the switchgear in response to a power load demand. The shipping, positioning, and attaching steps are carried out with engine-generators and switchgear operatively installed in the interior of the primary modules.

Systems, methods, and building block modules for modular power generation facilities are disclosed. A multi-stack modular power generation facility includes first and second pluralities of primary modules and first and second control systems. The first modules are positioned in a first stack to form a first vertical enclosure; the second modules are positioned in a second stack to form a second vertical enclosure; and the first and second modules each include gen-set modules, each with an engine-generator, and a switchgear module ganged to the gen-set modules. Each control system communicates with the respective gen-set modules to coordinate the engine-generators as a unit and to control the loading of each of the generators in response to a power load demand. The second plurality of primary modules are disposed immediately adjacent the first plurality of primary modules such that the second vertical enclosure abuts the first vertical enclosure.

A system for assembling an exhaust after-treatment assembly having a plurality of exhaust after-treatment blocks is described. Each of the plurality of exhaust after-treatment blocks is disposed adjacent to at least one other exhaust after-treatment block. Each exhaust after-treatment block has one or more catalyst substrates. Each catalyst substrate includes a first face, a second face, and a plurality of side faces. The system includes at least one flange member to surround the one or more catalyst substrates about the side faces. The system further includes a locking arrangement including one or more clips on the flange member and a bracket member configured to engage with the one or more clips in the flange members of the adjacent exhaust after-treatment blocks.

Method for removal of soot, ash and metals or metal compounds, together with removal of NOx and SOx being present in process off-gasses or engine exhaust gasses.

A catalytic reactor including: catalytic cassettes each including a catalyst part configured to reduce NOx in exhaust gas and an outer peripheral part made of a frame covering side surfaces of the catalyst part; and a lattice frame on which the catalytic cassettes are placed. The lattice frame includes a plurality of inflow holes through which exhaust gas flows into the catalyst parts and a plurality of frame parts which defines the respective plurality of inflow holes. The outer peripheral part of each of the catalytic cassettes is positioned so that the outer peripheral part is accommodated in a respective one of the frame parts.

A GDCI engine control system includes a heated catalyst in an engine exhaust port that is in close proximity to a combustion chamber and is used to heat rebreathed exhaust gases. The engine more quickly reaches operating temperatures, and emissions are reduced during cold running.

Methods and systems are provided related to an emissions control system. The emissions control system has an exhaust after-treatment system defining a plurality of distinct exhaust flow passages through which at least a portion of an exhaust stream can flow, e.g., the exhaust stream is produced by an engine. The emissions control system also includes a controller for controlling injection of reductant into the exhaust stream flowing through each of the flow passages. In one example, the emissions control system is configured for use in a vehicle, such as a locomotive or other rail vehicle.