A cement kiln burner device includes a powdered-solid-fuel flow channel, a first air flow channel placed inside the powdered-solid-fuel flow channel to be adjacent to the powdered-solid-fuel flow channel, having means for swirling an air flow, an outer air flow-channel group placed concentrically in an outermost side outside the powdered-solid-fuel flow channel, having three or more second air flow channels adapted to form means for straightly forwarding an air flow, and a combustible-solid-waste flow channel placed inside the first air flow channel. The second air flow channels are placed proximally to each other in a radial direction within a range where air flows ejected from the respective second air flow channels are merged to form a single air flow, and are configured to control flow rates of the air flow ejected from the respective second air flow channels, independently for each second air flow channel.

A cement kiln burner device includes a powdered-solid-fuel flow channel, a first air flow channel placed inside the powdered-solid-fuel flow channel to be adjacent to the powdered-solid-fuel flow channel, having means for swirling an air flow, an outer air flow-channel group placed concentrically in an outermost side outside the powdered-solid-fuel flow channel, having three or more second air flow channels adapted to form means for straightly forwarding an air flow, and a combustible-solid-waste flow channel placed inside the first air flow channel. The second air flow channels are placed proximally to each other in a radial direction within a range where air flows ejected from the respective second air flow channels are merged to form a single air flow, and are configured to control flow rates of the air flow ejected from the respective second air flow channels, independently for each second air flow channel.

A cement kiln burner device includes a powdered-solid-fuel flow channel, a first air flow channel placed inside the powdered-solid-fuel flow channel to be adjacent to the powdered-solid-fuel flow channel, having means for swirling an air flow, an outer air flow-channel group placed concentrically in an outermost side outside the powdered-solid-fuel flow channel, having three or more second air flow channels adapted to form means for straightly forwarding an air flow, and a combustible-solid-waste flow channel placed inside the first air flow channel. The second air flow channels are placed proximally to each other in a radial direction within a range where air flows ejected from the respective second air flow channels are merged to form a single air flow, and are configured to control flow rates of the air flow ejected from the respective second air flow channels, independently for each second air flow channel.

A cement kiln burner device includes a powdered-solid-fuel flow channel, a first air flow channel placed inside the powdered-solid-fuel flow channel to be adjacent to the powdered-solid-fuel flow channel, having means for swirling an air flow, an outer air flow-channel group placed concentrically in an outermost side outside the powdered-solid-fuel flow channel, having three or more second air flow channels adapted to form means for straightly forwarding an air flow, and a combustible-solid-waste flow channel placed inside the first air flow channel. The second air flow channels are placed proximally to each other in a radial direction within a range where air flows ejected from the respective second air flow channels are merged to form a single air flow, and are configured to control flow rates of the air flow ejected from the respective second air flow channels, independently for each second air flow channel.

A combi stove (1) is arranged for combusting both logs and granular material. The combi stove (1) has a common combustion chamber (2) arranged so that both the logs and the granular material may be combusted in the common combustion chamber (2). The combi stove (1) further has an ash collector (3) arranged under the combustion chamber (2) and a front aperture (4) through which logs may be placed in the combustion chamber (2). Also the combi stove (1) includes a granular material combustion area (5) arranged in the combustion chamber (2), wherein the granular material combustion area (5) has a bottom combustion surface (6) including bottom airflow apertures (7) arranged to enable an airflow to the granular material during a combustion of the granular material in the granular material combustion area (5). The granular material combustion area (5) is at least partly surrounded by a granular material area sidewall (8) having sidewall airflow apertures (9) arranged to enable an airflow to flue gasses generated during a combustion of the granular material in the granular material combustion area (5). At least a part of the granular material area sidewall (8) is releasable from the granular material combustion area (5). Furthermore, a use of a combi stove (1).

A combi stove (1) is arranged for combusting both logs and granular material. The combi stove (1) has a common combustion chamber (2) arranged so that both the logs and the granular material may be combusted in the common combustion chamber (2). The combi stove (1) further has an ash collector (3) arranged under the combustion chamber (2) and a front aperture (4) through which logs may be placed in the combustion chamber (2). Also the combi stove (1) includes a granular material combustion area (5) arranged in the combustion chamber (2), wherein the granular material combustion area (5) has a bottom combustion surface (6) including bottom airflow apertures (7) arranged to enable an airflow to the granular material during a combustion of the granular material in the granular material combustion area (5). The granular material combustion area (5) is at least partly surrounded by a granular material area sidewall (8) having sidewall airflow apertures (9) arranged to enable an airflow to flue gasses generated during a combustion of the granular material in the granular material combustion area (5). At least a part of the granular material area sidewall (8) is releasable from the granular material combustion area (5). Furthermore, a use of a combi stove (1).

A porous-medium premixing combustor is provided, which includes: an air-fuel gas mixer, a combustor body, a thermocouple, an ignition electrode, and a detecting electrode. The combustor body includes a casing connected to the air-fuel gas mixer; an outer and an inner burner-block, wherein the outer burner-block and the casing are connected, forming a square chamber, and the inner burner-block is provided inside the square chamber, with a via hole communicating with a pipe; and a mixed gas distributing plate, an ordered porous plate, a small-pore foamed ceramic plate, and a big-pore foamed-ceramic plate sequentially provided along an axis direction of the via hole of the inner burner-block. The thermocouple is provided at the casing and extends into the square chamber. The ignition electrode is provided close to an end of the big-pore foamed-ceramic plate. The detecting electrode is provided close to an exit end of the big-pore foamed-ceramic plate.

A porous-medium premixing combustor is provided, which includes: an air-fuel gas mixer, a combustor body, a thermocouple, an ignition electrode, and a detecting electrode. The combustor body includes a casing connected to the air-fuel gas mixer; an outer and an inner burner-block, wherein the outer burner-block and the casing are connected, forming a square chamber, and the inner burner-block is provided inside the square chamber, with a via hole communicating with a pipe; and a mixed gas distributing plate, an ordered porous plate, a small-pore foamed ceramic plate, and a big-pore foamed-ceramic plate sequentially provided along an axis direction of the via hole of the inner burner-block. The thermocouple is provided at the casing and extends into the square chamber. The ignition electrode is provided close to an end of the big-pore foamed-ceramic plate. The detecting electrode is provided close to an exit end of the big-pore foamed-ceramic plate.

A porous-medium premixing combustor is provided, which includes: an air-fuel gas mixer, a combustor body, a thermocouple, an ignition electrode, and a detecting electrode. The combustor body includes a casing connected to the air-fuel gas mixer; an outer and an inner burner-block, wherein the outer burner-block and the casing are connected, forming a square chamber, and the inner burner-block is provided inside the square chamber, with a via hole communicating with a pipe; and a mixed gas distributing plate, an ordered porous plate, a small-pore foamed ceramic plate, and a big-pore foamed-ceramic plate sequentially provided along an axis direction of the via hole of the inner burner-block. The thermocouple is provided at the casing and extends into the square chamber. The ignition electrode is provided close to an end of the big-pore foamed-ceramic plate. The detecting electrode is provided close to an exit end of the big-pore foamed-ceramic plate.

A porous-medium premixing combustor is provided, which includes: an air-fuel gas mixer, a combustor body, a thermocouple, an ignition electrode, and a detecting electrode. The combustor body includes a casing connected to the air-fuel gas mixer; an outer and an inner burner-block, wherein the outer burner-block and the casing are connected, forming a square chamber, and the inner burner-block is provided inside the square chamber, with a via hole communicating with a pipe; and a mixed gas distributing plate, an ordered porous plate, a small-pore foamed ceramic plate, and a big-pore foamed-ceramic plate sequentially provided along an axis direction of the via hole of the inner burner-block. The thermocouple is provided at the casing and extends into the square chamber. The ignition electrode is provided close to an end of the big-pore foamed-ceramic plate. The detecting electrode is provided close to an exit end of the big-pore foamed-ceramic plate.