Abstract: The present invention relates to a gasification burner comprising a main burner, N-stage sub-burners arranged on the inner side of the main burner, where N is an integer greater than or equal to 1, the main burner and each stage of the sub-burners have independent fuel channels and oxidant channels respectively, the main burner and each stage of the sub-burners are arranged in a coaxial sleeves from outside to inside; the inner diameter of the main burner is larger than the outer diameter of the first stage of the sub-burners, and the inner diameter of each stage of the sub-burners is larger than the outer diameter of its next stage of the sub-burners; the gasification burner can ensure fuels and oxidants to be mixed fully and evenly in limited reaction space and residence time, accelerate combustion reaction rate, thereby improving fuel conversion rate and gasification performance; meanwhile, it can flexibly adjust flame shape without reducing the load of gasifier furnace by adjusting the load of the main bu

Abstract: The present invention relates to a gasification burner comprising a main burner, N-stage sub-burners arranged on the inner side of the main burner, where N is an integer greater than or equal to 1, the main burner and each stage of the sub-burners have independent fuel channels and oxidant channels respectively, the main burner and each stage of the sub-burners are arranged in a coaxial sleeves from outside to inside; the inner diameter of the main burner is larger than the outer diameter of the first stage of the sub-burners, and the inner diameter of each stage of the sub-burners is larger than the outer diameter of its next stage of the sub-burners; the gasification burner can ensure fuels and oxidants to be mixed fully and evenly in limited reaction space and residence time, accelerate combustion reaction rate, thereby improving fuel conversion rate and gasification performance; meanwhile, it can flexibly adjust flame shape without reducing the load of gasifier furnace by adjusting the load of the main bu

Abstract: A carbonaceous substance powder gasification system and gasification method. The system comprises a carbonaceous substance reaction apparatus and a gas return apparatus used for raising the pressure of some of a raw syngas cooled and preliminarily purified downstream of the reaction apparatus, then blending with high-temperature raw syngas upstream of the reaction apparatus and reducing the temperature.

Abstract: A carbonaceous substance dry powder gasification device and method, the device comprising from bottom to top a lower cooling and purification section (1), a gasification reaction section (2), a cooling reaction section (3) and an upper cooling and purification section (4); an initial cooling device is disposed at the connection between the cooling reaction section and the gasification reaction section; and a plurality of nozzles are circumferentially arranged in the gasification reaction section.

Abstract: A carbonaceous substance powder gasification system and gasification method. The system comprises a carbonaceous substance reaction apparatus and a gas return apparatus used for raising the pressure of some of a raw syngas cooled and preliminarily purified downstream of the reaction apparatus, then blending with high-temperature raw syngas upstream of the reaction apparatus and reducing the temperature.

Abstract: Fuel distribution devices for use with burners are described herein. One embodiment of a fuel distribution device for a burner can include an inlet end having a disc-like annular cover with inlet openings, an outlet end having a disc-like annular support plate with groups of distribution openings, and cylindrical inner and outer walls. These components can define a distribution channel and the device can further include fuel feeding tubes extending from the inlet openings into the distribution channel, and each of the fuel feeding tubes can divide into branch pipes extending through the distribution channel to the annular support plate. Moreover, the branch pipes extending from a same feeding tube can be in communication with distribution openings within a same group, and the branch pipes can be coiled spirally about the inner wall and connected to distribution openings at an inclined angle such fuel ejected therefrom has a tangential velocity.

Abstract: A carbonaceous substance dry powder gasification device and method, the device comprising from bottom to top a lower cooling and purification section (1), a gasification reaction section (2), a cooling reaction section (3) and an upper cooling and purification section (4); an initial cooling device is disposed at the connection between the cooling reaction section and the gasification reaction section; and a plurality of nozzles are circumferentially arranged in the gasification reaction section.

Abstract: The present invention is directed to a flame detection device comprising a flame signal receiver (1), a flame signal passage (11) and a flame signal transmitting mechanism, characterized in that, the flame signal passage (11) passes through a furnace shell (12) into inner of the furnace and comprises an outside-furnace passage portion (11a) and an inside-furnace passage portion (11b); wherein a pressure-resistant optical mechanism (10) is arranged at the outermost end of the outside-furnace passage portion, said pressure-resistant optical mechanism hermetically and transparently separate the flame signal receiver from the flame signal passage; and wherein the inside-furnace passage portion (11b) is provided with a cooling mechanism (19).

Abstract: A gasification apparatus for solid fuel, especially an apparatus for producing syngas by pressurized gasification of coal powder, including a gasification chamber (II) and a syngas cooling and purification chamber (III). The inner wall of the gasification chamber is a water-cooling wall (4). The inner side of the water-cooled wall is evenly coated with a layer of fire-resistant material (16). There is an annular cavity between the water-cooling wall of the gasification chamber and the furnace body. A syngas quencher, a vertical pipe (22), a gas distribution device (24), a defoaming device, and a dewatering and deashing device (21) are provided in the syngas cooling and purification chamber. The apparatus has a simple structure and is easy to operate. A high temperature gasification method for dry powder of carbonaceous material comprises spraying the combustible material and oxygen into the furnace and followed by ignition.

Abstract: The present invention provide a fuel distribution device (9) for a burner, comprising an inlet end (9a), an outlet end (9b) and a distribution channel (9c) extending therebetween as well as n fuel feeding tubes (5) extending from the inlet end (9a) into the distribution channel (9c), characterized in that, the outlet end (9b) is provided with n groups of distribution opening, each of the groups includes m distribution openings distributed evenly along a circumference direction of the outlet end (9b), and in that the m feeding branch pipes (8) extending from each of the fuel feeding tubes (5) are communicated with the m distribution openings of each group respectively, wherein m, n are positive integers greater than or equal to 2. This design of the fuel distribution device improves the redundancy of the burner so as to ensure the even distribution of the fuel such as powdered coals at the outlet end of the fuel distribution device upon failure of one or several fuel feeding tubes.