The invention relates to a conveying device for conveying granular material that is stored in a source (10), for example polyamide 6 (PA6) granules, to multiple receiving points (11, 12, 13, . . . ), the conveying device having a number of injectors (11, 12, 13, . . . ) corresponding to the number of receiving points. Also disclosed is a method for conveying granular material, for example PA6 granules, from a source (10) to multiple receiving points.

A feed-in container for fluidizing and conveying products in dust form, such as, for example, coal dust, using conveying gases under pressures up to 7 MPa, in which the fluidizing floor is fastened by a central tubular supporting construction. A stable and low-outlay construction takes up the weight and pressure loading of the fluidizing floor. An emptying line is arranged in the supporting construction, making a separate opening through the fluidizing floor obsolete and thus providing a low-outlay passage through the fluidizing floor. The supporting construction is also designed such that it serves as a shaft guide for an agitator.

A feed-in container for fluidizing and conveying products in dust form, such as, for example, coal dust, using conveying gases under pressures up to 7 MPa, in which the fluidizing floor is fastened by a central tubular supporting construction. A stable and low-outlay construction takes up the weight and pressure loading of the fluidizing floor. An emptying line is arranged in the supporting construction, making a separate opening through the fluidizing floor obsolete and thus providing a low-outlay passage through the fluidizing floor. The supporting construction is also designed such that it serves as a shaft guide for an agitator.

A Powder feeding system for feeding powder in a feed tank via a valve for powder downstream of the feed tank and through a powder delivery pipe, the Powder feeding system including: a powder fluidizing portion provided in the feed tank and configured to introduce fluidizing gas for fluidizing the powder; and a powder refluidizing portion provided between the powder fluidizing portion and the valve for powder and configured to introduce refluidizing gas for refluidizing the powder.

A Powder feeding system for feeding powder in a feed tank via a valve for powder downstream of the feed tank and through a powder delivery pipe, the Powder feeding system including: a powder fluidizing portion provided in the feed tank and configured to introduce fluidizing gas for fluidizing the powder; and a powder refluidizing portion provided between the powder fluidizing portion and the valve for powder and configured to introduce refluidizing gas for refluidizing the powder.

A powder supply hopper pressurizing apparatus including a first buffer tank in which pressurizing gas to be supplied to a powder supply hopper is accumulated at a predetermined pressure, a second buffer tank, a lower part pressure adjustment nitrogen system connected to the powder supply hopper, to supply the gas toward powder fuel stored in the powder supply hopper when supplying the powder fuel to a burner, and a control unit that controls the first buffer tank to pressurize the powder supply hopper to a first pressure and then controls the second buffer tank to pressurize the powder supply hopper to a second pressure, and where the control unit determines that one of the first buffer tank or the second buffer tank is non-usable, the control unit pressurizes the powder supply hopper by use of the first or second buffer tank that is operable, and the gas supply system.

A method for treating particulate material in a fluidizing device. The fluidizing device includes a fluidizing unit having a perforated distributor plate dividing the fluidizing unit into a distributor chamber and a fluidizing chamber. The fluidizing chamber includes a material inlet and the distributor chamber includes a material discharge. In an operating condition, the fluidizing chamber is first filled through the material inlet with material to be treated and the material is then treated by the process gas flowing through the fluidizing chamber.