A method of removing impurities from a gas including the steps of removing impurities from biogas comprising at least one adsorbents via a process vessel or reactor, directing the purified gas to an device to generate power and/or heat, regenerating the saturated adsorption media with the waste heat recovered from the engine exhaust and directing the regeneration gas (hot air or engine exhaust) to flare, engine exhaust stack, or atmosphere.

A method of removing impurities from a gas including the steps of removing impurities from biogas comprising at least one adsorbents via a process vessel or reactor, directing the purified gas to an device to generate power and/or heat, regenerating the saturated adsorption media with the waste heat recovered from the engine exhaust and directing the regeneration gas (hot air or engine exhaust) to flare, engine exhaust stack, or atmosphere.

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.

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 fuel reforming system includes: an engine combusting reformed gas to generate mechanical power; an intake line connected to the engine to supply the reformed gas and air to the engine; an exhaust line connected to the engine to circulate the exhaust gas discharged from the engine; a fuel reformer provided at an exhaust gas recirculation (EGR) line diverging from the exhaust line; and a catalyst disposed at the exhaust line and purifying nitrogen oxide included in the exhaust gas at a front end of the fuel reformer. In particular, the fuel reformer mixes the fuel with the EGR gas which is a part of the exhaust gas and passes through the EGR line, and reforms the fuel mixed in the EGR gas.

There is provided an exhaust-gas aftertreatment arrangement for an internal combustion engine comprising a first catalytic converter, a second catalytic converter arranged in parallel with the first catalytic converter, the first and second catalytic converters being arranged to receive exhaust gas from an engine, a connection pipe fluidly connecting an outlet of the second catalytic converter with an inlet of the first catalytic converter, thereby allowing a flow of exhaust gas through the connection pipe, and an outlet valve arranged in the outlet of the second catalytic converter and downstream of the location of the connection pipe, wherein the outlet valve is configured to control a flow of exhaust gas through the second catalytic converter. There is also provided a method for controlling an exhaust-gas aftertreatment arrangement.

There is provided an exhaust-gas aftertreatment arrangement for an internal combustion engine comprising a first catalytic converter, a second catalytic converter arranged in parallel with the first catalytic converter, the first and second catalytic converters being arranged to receive exhaust gas from an engine, a connection pipe fluidly connecting an outlet of the second catalytic converter with an inlet of the first catalytic converter, thereby allowing a flow of exhaust gas through the connection pipe, and an outlet valve arranged in the outlet of the second catalytic converter and downstream of the location of the connection pipe, wherein the outlet valve is configured to control a flow of exhaust gas through the second catalytic converter. There is also provided a method for controlling an exhaust-gas aftertreatment arrangement.

A particulate filtering apparatus for dry filtering exhaust gases of a diesel engine includes at least two compartments independently arranged in parallel with respect to a flow of the exhaust gases. Each of the compartments is equipped with at least one shut-off valve for regulating the flow of gas passing through the compartment and further includes one or more filters adapted to hold the particulate and an emission device to generate a countercurrent gas pulse flow at the one or more filters. A central control unit operates and controls the at least one shut-off valve and of said emission device. Each of the at least two compartments further includes an injector operably controlled by the central control unit for the inlet of hot gases into the at least two compartments.

A particulate filtering apparatus for dry filtering exhaust gases of a diesel engine includes at least two compartments independently arranged in parallel with respect to a flow of the exhaust gases. Each of the compartments is equipped with at least one shut-off valve for regulating the flow of gas passing through the compartment and further includes one or more filters adapted to hold the particulate and an emission device to generate a countercurrent gas pulse flow at the one or more filters. A central control unit operates and controls the at least one shut-off valve and of said emission device. Each of the at least two compartments further includes an injector operably controlled by the central control unit for the inlet of hot gases into the at least two compartments.

A method of removing impurities from a gas including the steps of removing impurities from biogas comprising at least one adsorbents via a process vessel or reactor, directing the purified gas to an device to generate power and/or heat, regenerating the saturated adsorption media with the waste heat recovered from the engine exhaust and directing the regeneration gas (hot air or engine exhaust) to flare, engine exhaust stack, or atmosphere.