Abstract: A cyclone separator is disclosed. The cyclone separator includes a housing that forms a separation chamber, a central cylinder made of a non-metal refractory material and located inside the housing, and a support structure that supports the central cylinder. The separation chamber is divided by the central cylinder into an outer separation chamber and an inner separation chamber. The separation chamber includes an inlet and an outlet that are in communication with the outer and inner separation chambers, respectively. The support structure comprises a hollowed-out upwardly-arched structure that is connected to an inner wall of the separation chamber by continuous pouring or masonry, with an arch face of the support structure being connected to a lower end of the central cylinder to support the central cylinder. The central cylinder is connected to both the housing and the supporting structure by continuous pouring or masonry.

Abstract: The present disclosure provides an internally self-circulating fluidized bed gasifier and an air distributor therein for generating a stepped constrained wind. The air distributor includes a gas-material mixture through hole and a plurality of vent holes. Each of the vent holes is designed to have a winding path. Due to the winding paths of the vent holes and an arrangement of converging outlets of the vent holes to the gas-material mixture through hole, which is in communication with a furnace chamber, the present disclosure enables a gas entering the furnace chamber to form a stepped constrained wind and effectively prevents solid-phase materials in the furnace chamber from leaking into a gas mixture chamber. The internally self-circulating fluidized bed gasifier can achieve self-circulation combustion gasification for multiple times and a well-controlled gasification temperature, resulting in a high coal gasification efficiency without an ash leakage.

Abstract: A hydraulic forging machine and a method for replacing an upper anvil block thereof are disclosed. The hydraulic forging machine includes locking hydraulic cylinder that is fixed to a movable beam of the hydraulic forging machine when the hydraulic forging machine is in operation. The locking hydraulic cylinder is configured to provide a locking-unlocking function between an upper anvil block of the hydraulic forging machine and the movable beam. The locking hydraulic cylinder has its hydraulic power source supplied from a main hydraulic cylinder or a return hydraulic cylinder, which is also fixed to the movable beam. The present disclosure not only enables an oil supply circuit for the locking hydraulic cylinder to move together with the movable beam, but also simplifies the oil supply circuit for the locking hydraulic cylinder, resulting in an improved reliability of the hydraulic forging machine.

Abstract: The present disclosure provides an internally self-circulating fluidized bed gasifier and an air distributor therein for generating a stepped constrained wind. The air distributor includes a gas-material mixture through hole and a plurality of vent holes. Each of the vent holes is designed to have a winding path. Due to the winding paths of the vent holes and an arrangement of converging outlets of the vent holes to the gas-material mixture through hole, which is in communication with a furnace chamber, the present disclosure enables a gas entering the furnace chamber to form a stepped constrained wind and effectively prevents solid-phase materials in the furnace chamber from leaking into a gas mixture chamber. The internally self-circulating fluidized bed gasifier can achieve self-circulation combustion gasification for multiple times and a well-controlled gasification temperature, resulting in a high coal gasification efficiency without an ash leakage.

Abstract: A cyclone separator is disclosed. The cyclone separator includes a housing that forms a separation chamber, a central cylinder made of a non-metal refractory material and located inside the housing, and a support structure that supports the central cylinder. The separation chamber is divided by the central cylinder into an outer separation chamber and an inner separation chamber. The separation chamber includes an inlet and an outlet that are in communication with the outer and inner separation chambers, respectively. The support structure comprises a hollowed-out upwardly-arched structure that is connected to an inner wall of the separation chamber by continuous pouring or masonry, with an arch face of the support structure being connected to a lower end of the central cylinder to support the central cylinder. The central cylinder is connected to both the housing and the supporting structure by continuous pouring or masonry.

Abstract: A method and an apparatus for mixing and pre-burning a gasification agent are disclosed. The apparatus includes a gasifier body comprising a furnace chamber, a gas distribution plate, and a gasification agent mixing chamber. The apparatus also includes a pulverized coal transport pipe and a carbon-containing fly ash transport pipe, which respectively feed a pulverized coal and a carbon-containing fly ash to a middle portion of the gasification agent mixing chamber. The apparatus further includes a gasification agent transport pipe that feeds a gasification agent to a bottom of the gasification agent mixing chamber. The present disclosure advocates a pre-burning process of the gasification agent that involves the pulverized coal and the carbon-containing fly ash, which heats the gasification agent as the gasification agent is being fed to the circulating fluidized bed gasifier, thereby ensuring a more complete burning, pyrolysis and gasification of coal within the circulating fluidized bed gasifier.

Abstract: The present disclosure provides a method and an apparatus for implementing gasification by combining a circulating fluidized bed and a pyrolysis bed. The method and the apparatus may be applied to raw coal for generating coal gas with a high raw coal gasification rate while producing no pollutants, such as tar, during gasification. The apparatus includes a circulating fluidized bed gasification furnace and a pyrolysis bed gasification furnace. In the circulating fluidized bed gasification furnace, raw coal is converted to coal gas along with carbon-containing fly ash and semicoke, with the latter two separated from the coal gas using a cyclone separator and a deposition chamber. The semicoke is further processed by the pyrolysis bed gasification furnace to generate more coal gas, whereas the carbon-containing fly ash is sent back to the circulating fluidized bed gasification furnace for further combustion.