Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.

Provided is an additive composition and method for preventing fouling, slagging and corrosion of biomass multi fuel fired or dedicated boilers using alumina, and more particularly, to an additive composition capable of effectively preventing from fouling, slagging and corrosion of the inner wall of a biomass boiler and optimizing the thermal efficiency of power generation facilities by increasing the melting temperature of an inorganic material contained in the biomass fuel using alumina, and the additive composition may include 0.1 to 5 parts by weight of alumina (Al.sub.2O.sub.3) in respective of 100 parts by weight of fuels fed into biomass multi fuel fired or dedicated boilers.

Provided is an additive composition and method for preventing fouling, slagging and corrosion of biomass multi fuel fired or dedicated boilers using alumina, and more particularly, to an additive composition capable of effectively preventing from fouling, slagging and corrosion of the inner wall of a biomass boiler and optimizing the thermal efficiency of power generation facilities by increasing the melting temperature of an inorganic material contained in the biomass fuel using alumina, and the additive composition may include 0.1 to 5 parts by weight of alumina (Al.sub.2O.sub.3) in respective of 100 parts by weight of fuels fed into biomass multi fuel fired or dedicated boilers.

Process and device for pneumatically conveying a powdery material comprising the steps of Pneumatically conveying a powdery material in a pneumatic conveying pipeline (first) and into said recipient by a flow generated by a blower, A powdery material dosing step, A fluctuation step of pressure drop in said pneumatic conveying pipeline or up to said recipient,
wherein a sonic device generates sonic waves inside said pneumatic conveying pipeline or up to said recipient and provides a counteraction on the fluctuation step of the pressure drop in said pneumatic conveying pipeline or up to said recipient.

Process and device for pneumatically conveying a powdery material comprising the steps of Pneumatically conveying a powdery material in a pneumatic conveying pipeline (first) and into said recipient by a flow generated by a blower, A powdery material dosing step, A fluctuation step of pressure drop in said pneumatic conveying pipeline or up to said recipient,
wherein a sonic device generates sonic waves inside said pneumatic conveying pipeline or up to said recipient and provides a counteraction on the fluctuation step of the pressure drop in said pneumatic conveying pipeline or up to said recipient.

Sorbent compositions containing halogen and either nitrates or nitrites are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.

Sorbent compositions containing halogen and either nitrates or nitrites are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.

A flue gas additive is provided that includes both a nitrogenous component to reduce gas phase nitrogen oxides and a halogen-containing component to oxidize gas phase elemental mercury.

A flue gas additive is provided that includes both a nitrogenous component to reduce gas phase nitrogen oxides and a halogen-containing component to oxidize gas phase elemental mercury.

Provided are water-based fuel additive compositions that, when combusted with a fuel containing vanadium in a gas turbine, inhibit vanadium hot corrosion in the gas turbine. The water-based fuel additive compositions include at least one rare earth element compound or alkaline earth element compound that retards vanadium corrosion resulting from combustion of vanadium rich fuel.