Translation of "Dichtstromförderung" in English

The pneumatic conveying systems include both positive pressure and vacuum, dilute and dense phase.

Due to the dense phase conveying with reduced flow velocity the particles remain largely intact.

Gericke offers the entire spectrum of lean- and dense-phase conveying systems.

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Pressure vessel, resp. sender are used for the pneumatic dense phase conveying.

Dynamic Air is a world leader in dense phase pneumatic conveying.

It is therefore intended to provide a very advantageous, so-called seal flow feeding in respect of feeding capacity and economic efficiency (comparably lower energy requirements) in comparison with other pneumatic feeding methods.

Up to now the supplying of such a silo with alumina was usually via a closed pipe system, preferably with compact flow feeding from the central alumina supply.

A compressed air pipe 66, which, as will be explained, makes dense flow transportation of material possible, is provided parallel to the feed pipes 62 and 64.

Assuming a standard gap of 0.10 to 0.25 mm, then depending on the cellular wheel diameter it will be appreciated that producing cellular wheel sluices for dense-phase feeding presents difficulties, especially given the pronounced trend toward 6-bar feeding systems, which until now have been used only for pressure vessels.

Conventionally, the aluminum fluoride is introduced from bags; more modern cells operate with metering devices, and dense fluidized conveying is also used increasingly.

BACKGROUND OF THE INVENTION The invention relates to a device for loading containers that are open or can be vented, containers for fine particulate materials, said device being part of a pneumatic conveyance system, in particular such a system using dense layer transportation.

For example one can make use of dense layer transportation in which the propellant is blown into the particulate material, either continuously or at regular intervals, from a parallel pipe.

Even under relatively slow dense flow conditions, the material of the curved piece is subject to a relatively high degree of wear.

Due to the combination of vacuum and dense flow, the inline pump IP 5000 offers a constant and in particular high pump output.

Dense phase conveying is optimal for fine bulk solids such as powders or for larger particles like coarse granulate, pellets, coffee beans or pet food.

The fuel is introduced to this gasifier by means of a dense phase pneumatic conveying system via a swirl burner and is gasified with air preheated to 500 °C at temperatures of up to 1,300 °C.

Gericke Ellbows Type GB can be used for vacuum and positive pressure conveying as for lean and dense phase conveying.

For this reason, over the past several years, tests have been conducted at a number of powder coating installations with so-called plug flow conveying or dense phase conveying, in which the powder coating material is cyclically conveyed either by gravity or by negative pressure into a chamber and the discharged from the chamber with compressed air and conveyed in the form of successive “plugs” through the delivery line to the spray application device.

At low gas velocities, the delivery proceeds extremely gently as dense stream delivery (plug delivery, momentum delivery) with high pressure drop.

Excessively low delivery rates in the region of strand delivery are problematic, since stable delivery is not possible in the unstable region between dense stream delivery and strand delivery.

Excessively low delivery rates in the range of strand delivery are, though, problematic, since stable delivery is not possible in the unstable range between dense stream delivery and strand delivery.

The Carbo-V® process requires a large number of solid matter transfers, such as the inward transfer of biomass, the inward and outward transfers of the coke generated in the LTG process, because this is crushed at atmospheric pressure and must be freed from foreign matter (stones, metal parts, and the like), the outward and inward transfers of the residual coke, because this must be ground at atmospheric pressure to give pulverized fuel for dense phase conveyance, and the slag outward transfer.

The improved powder properties of the ground carbonization char as compared to the starting biomass improve the flow properties and increase the flow resistance of the carbonized char, and allow stable steady dense phase conveyance, which decisively increases the safety of the entrained-flow gasification process with respect to an oxygen breakthrough due to a discontinuous nature of the pulverized fuel conveyance.

Because of the thermal treatment stage of the low-temperature gasification, it is possible to feed biomass, in treated form, as LTG gas directly to the burner of the high-temperature entrained-flow gasification, and as coke via a suitable input element (dense phase conveyance, worm conveyor) to the endothermic gasification stage.