The invention relates to the use of engineered fuel feedstocks to control the emission of sulfur-based, chlorine-based, nitrogen-based, or mercury-based pollutants, such as SO.sub.2, SO.sub.3, H.sub.2SO.sub.4, NO, NO.sub.2, HCl, and Hg that are generated during the combustion of fossil fuels, such as coal. Disclosed are novel engineered fuel feedstocks, feedstocks produced by the described processes, methods of making the fuel feedstocks, methods of producing energy from the fuel feedstocks, and methods of generating electricity from the fuel feedstocks.

Biomass based fuel configured to reduce chemical and/or mechanical effects of flue gas on heat transfer surfaces. The biomass based fuel comprises steam-exploded biomass and some combustion additive. The combustion additive is selected from a group of additives that are capable of reducing chemical and/or mechanical effects of flue gas on heat transfer surfaces. The combustion additive may comprise fouling-reducing additive and/or an additive reducing corrosion potential. In addition, a method for manufacturing biomass based fuel configured to reduce chemical and/or mechanical effects of flue gas on heat transfer surfaces. The method comprises providing biomass and steam into a reactor; maintaining said biomass and said steam simultaneously in the reactor, in a pressure of at least 10 bar(a) and at a temperature from 180 C. to 250 C. for at least 2 minutes; and decreasing the pressure in the reactor and/or conveying biomass out of the reactor such that the pressure of the environment of the biomass decreases below 5 bar(a), to produce steam-exploded biomass. The method further comprises adding some combustion additive to the biomass and/or the steam-exploded biomass.

Biomass based fuel configured to reduce chemical and/or mechanical effects of flue gas on heat transfer surfaces. The biomass based fuel comprises steam-exploded biomass and some combustion additive. The combustion additive is selected from a group of additives that are capable of reducing chemical and/or mechanical effects of flue gas on heat transfer surfaces. The combustion additive may comprise fouling-reducing additive and/or an additive reducing corrosion potential. In addition, a method for manufacturing biomass based fuel configured to reduce chemical and/or mechanical effects of flue gas on heat transfer surfaces. The method comprises providing biomass and steam into a reactor; maintaining said biomass and said steam simultaneously in the reactor, in a pressure of at least 10 bar(a) and at a temperature from 180 C. to 250 C. for at least 2 minutes; and decreasing the pressure in the reactor and/or conveying biomass out of the reactor such that the pressure of the environment of the biomass decreases below 5 bar(a), to produce steam-exploded biomass. The method further comprises adding some combustion additive to the biomass and/or the steam-exploded biomass.

A coal deactivation processing device includes: a rotary kiln body provided rotatably into which coal and a processing gas are supplied; and a feed pipe provided so as to be able to rotate along with the rotary kiln body, extending along a lengthwise direction of the rotary kiln body, and having a coolant flowing therein. A pair of blades is provided on an outer circumferential section of the feed pipe and protrudes in a radial direction. The feed pipe and the pair of blades are arranged so as to pass through an accumulated coal layer of the coal within the rotary kiln body upon rotation of the rotary kiln body, and such that an angle formed by a tangent of a path along which the central axis of the feed pipe passes and the bisector of the pair of blades is from 0 to 40 degrees.

A coal deactivation processing device includes: a rotary kiln body provided rotatably into which coal and a processing gas are supplied; and a feed pipe provided so as to be able to rotate along with the rotary kiln body, extending along a lengthwise direction of the rotary kiln body, and having a coolant flowing therein. A pair of blades is provided on an outer circumferential section of the feed pipe and protrudes in a radial direction. The feed pipe and the pair of blades are arranged so as to pass through an accumulated coal layer of the coal within the rotary kiln body upon rotation of the rotary kiln body, and such that an angle formed by a tangent of a path along which the central axis of the feed pipe passes and the bisector of the pair of blades is from 0 to 40 degrees.

The invention relates to the use of engineered fuel feedstocks to control the emission of sulfur-based, chlorine-based, nitrogen-based, or mercury-based pollutants, such as SO.sub.2, SO.sub.3, H.sub.2SO.sub.4, NO, NO.sub.2, HCl, and Hg that are generated during the combustion of fossil fuels, such as coal. Disclosed are novel engineered fuel feedstocks, feedstocks produced by the described processes, methods of making the fuel feedstocks, methods of producing energy from the fuel feedstocks, and methods of generating electricity from the fuel feedstocks.

The invention relates to the use of engineered fuel feedstocks to control the emission of sulfur-based, chlorine-based, nitrogen-based, or mercury-based pollutants, such as SO.sub.2, SO.sub.3, H.sub.2SO.sub.4, NO, NO.sub.2, HCl, and Hg that are generated during the combustion of fossil fuels, such as coal. Disclosed are novel engineered fuel feedstocks, feedstocks produced by the described processes, methods of making the fuel feedstocks, methods of producing energy from the fuel feedstocks, and methods of generating electricity from the fuel feedstocks.

It is disclosed a method for smokelessly combusting coals, comprising stacking an ignition agent layer, a pilot coal (10) and a lower coal (9) from above to bottom in a stove, igniting the ignition agent layer, and burning downwardly; wherein the ignition agent layer is selected from an ignition paste or an ignition cake alone, or in combination with a straw charcoal grille (11); wherein the ignition paste or the ignition cake comprises a alcohol mixture having a carbon atom number of 2-9; wherein a large combustion chamber (7) is formed in the top part of core (2) with the aid of a gathering fire plate (6); wherein a secondary air inlet opening (4) is provided in the stove in order to supply the main torch in the large combustion chamber (7) with a secondary air intake to supplement the combustion.

It is disclosed a method for smokelessly combusting coals, comprising stacking an ignition agent layer, a pilot coal (10) and a lower coal (9) from above to bottom in a stove, igniting the ignition agent layer, and burning downwardly; wherein the ignition agent layer is selected from an ignition paste or an ignition cake alone, or in combination with a straw charcoal grille (11); wherein the ignition paste or the ignition cake comprises a alcohol mixture having a carbon atom number of 2-9; wherein a large combustion chamber (7) is formed in the top part of core (2) with the aid of a gathering fire plate (6); wherein a secondary air inlet opening (4) is provided in the stove in order to supply the main torch in the large combustion chamber (7) with a secondary air intake to supplement the combustion.

The invention relates to the use of engineered fuel feedstocks to control the emission of sulfur-based, chlorine-based, nitrogen-based, or mercury-based pollutants, such as SO.sub.2, SO.sub.3, H.sub.2SO.sub.4, NO, NO.sub.2, HCl, and Hg that are generated during the combustion of fossil fuels, such as coal. Disclosed are novel engineered fuel feedstocks, feedstocks produced by the described processes, methods of making the fuel feedstocks, methods of producing energy from the fuel feedstocks, and methods of generating electricity from the fuel feedstocks.