Conveying a material to be conveyed

Patent metadata

Field	Value
Publication number	US-10947050-B2
Application number	US-201816612912-A
Country	US
Kind code	B2
Filing date	May 3, 2018
Priority date	May 12, 2017
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

A conveyor system ( 1 ) for the continuous or discontinuous conveyance of a reactive and/or hot and/or abrasive material to be conveyed along a conveyor path includes a system housing ( 3 ) enclosing the conveyor path, which has at least one fluid inlet ( 5 ) for the introduction of fluid into the system housing ( 3 ), at least one fluid outlet ( 7, 9 ) for the discharge of fluid out of the system housing ( 3 ), a charging inlet ( 4 ) for introducing material to be conveyed into the system housing ( 3 ), and, apart from the at least one fluid inlet ( 5 ), the at least one fluid outlet ( 7, 9 ) and the charging inlet ( 4 ), are implemented in a technically fluid-tight manner.

First claim

The invention claimed is:

1. A conveyor system for continuously or discontinuously conveying a reactive and/or hot and/or abrasive material to be conveyed along a conveying path, the conveyor system comprising:
a system housing which encases the conveying path, the system housing having at least one fluid inlet for directing fluid into the system housing, at least one fluid outlet for dispensing fluid from the system housing and at least another fluid outlet for dispensing fluid and the material to be conveyed, a charging inlet for introducing material to be conveyed into the system housing;
a fluid recirculation system connected to the at least one fluid inlet to direct fluid into the system housing through the at least one fluid inlet, and connected to the at least one fluid outlet to trap and reuse fluid exiting the system housing through the at least one fluid outlet;
the system housing being embodied to be technically fluid-tight except for the at least one fluid inlet, the at least one fluid outlet, the at least another fluid outlet, and the charging inlet.

2. The conveyor system as claimed in claim 1 , further comprising a shut-off element configured for closing the dispensing opening.

3. The conveyor system as claimed in claim 2 , further comprising the shut-off element comprising at least one shut-off gate configured for closing the dispensing opening.

4. The conveyor system as claimed in claim 3 , the shut-off element comprising two mutually spaced apart shut-off gates configured for closing the dispensing opening.

5. The conveyor system as claimed in claim 1 , further comprising at least one safety element is disposed on the system housing and configured for discharging fluid from the system housing responsive to a fluid pressure in the system housing that exceeds a pressure threshold value, or configured for closed-loop controlling the fluid pressure so as to maintain the fluid pressure in a monitored pressure range.

6. The conveyor system as claimed in claim 1 , further comprising the fluid recirculation system comprising a turbomachine for directing fluid into the system housing.

7. The conveyor system as claimed in claim 1 , further comprising the fluid recirculation system has at least one heat exchanger for cooling the fluid.

8. The conveyor system as claimed in claim 1 , further comprising the fluid recirculation system comprising a fluid purification unit configured for purifying the fluid exiting the system housing.

9. The conveyor system as claimed in claim 1 , further comprising a shut-off element configured for closing the charging inlet in a fluid-tight manner.

10. A method for operating a conveyor system for continuously or discontinuously conveying a reactive and/or hot and/or abrasive material to be conveyed along a conveying path, the conveyor system including,
a system housing which encases the conveying path, the system housing having at least one fluid inlet for directing fluid into the system housing, at least one fluid outlet for dispensing fluid from the system housing, a charging inlet for introducing material to be conveyed into the system housing, and a dispensing opening for dispensing material to be conveyed from the system housing;
the system housing being embodied to be technically fluid-tight except for the at least one fluid inlet, the at least one fluid outlet, and the charging inlet; and
the dispensing opening is the at least one fluid outlet or the at least one fluid inlet of the system housing, the method comprising:
directing a fluid into the system housing through the at least one fluid inlet and in a fluid flow direction and transporting the material to be conveyed through the system housing in a conveying direction, wherein the fluid flow direction is substantially parallel to the conveying direction in which the material to be conveyed is transported through the system housing, 1 and directing the fluid to the at least one fluid outlet through the system housing.

11. The method as claimed in claim 10 , further comprising:
controlling a fluid atmosphere in the system housing in a closed-loop control such that the fluid atmosphere counteracts ingress into the system housing of a disturbance fluid from a neighboring apparatus which neighbors the system housing.

12. The method as claimed in claim 11 , further comprising closed-loop controlling a fluid pressure in the system housing to a nominal value which is higher than a current disturbance fluid pressure in the neighboring apparatus.

13. The method as claimed in claim 12 , further comprising detecting a differential pressure between the fluid pressure in the system housing and the disturbance fluid pressure in the neighboring apparatus, and closed-loop controlling a fluid flow directed into the system housing as a function of the differential pressure.

14. A method for operating a conveyor system for continuously or discontinuously conveying a reactive and/or hot and/or abrasive material which is to be conveyed along a conveying path, the conveyor system comprising:
a system housing which encases the conveying path and which comprises at least one fluid inlet for directing fluid into the system housing, at least one fluid outlet for dispensing fluid from the system housing, a charging inlet for introducing material to be conveyed into the system housing, and a dispensing opening for dispensing material to be conveyed from the system housing;
with the exception of the at least one fluid inlet and of the at least one fluid outlet, and of the charging inlet, embodying the housing so as to be technically fluid-tight, wherein the dispensing opening is a fluid outlet or is a fluid inlet of the system housing;
directing a fluid into the system housing through the at least one fluid inlet, and in a fluid flow direction which is substantially parallel to a conveying direction; and transporting the material to be conveyed through the system housing directing the material to the at least one fluid outlet through the system housing; and
forming a fluid atmosphere in the system housing which is closed-loop controlled in such a manner that the fluid atmosphere counteracts ingress into the system housing of a disturbance fluid from a neighboring apparatus which neighbors the system housing;
closed-loop controlling of fluid pressure in the system housing to a nominal value which is higher than a current disturbance fluid pressure in the neighboring apparatus and recirculating fluid into a fluid recirculation system of the conveyor system housing and through the at least one fluid inlet; and
trapping and reusing fluid exiting the system housing through at least one of the fluid outlets.

15. The method as claimed in claim 14 , further comprising discharging fluid from the conveyor system housing via at least one safety element when a fluid pressure in the system housing exceeds a pressure threshold value, or for closed-loop controlling the fluid pressure so as to maintain the fluid pressure in a monitored pressure range; and
disposing the at least one safety element on the system housing.

16. The method as claimed in claim 14 , further comprising directing fluid into the system housing via a fluid recirculating system having a turbomachine into the system housing from the flush recirculation system having a turbomachine for directing fluid into the system housing.

17. The method as claimed in one of claim 14 , further comprising cooling the fluid in at least one heat exchanger of the fluid recirculation system.

18. The method as claimed in claim 14 , further comprising

Assignees

• Primetals Technologies Austria GmbH

Inventors

• Rosenfellner Gerald

Classifications

• F27D17/00

  Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases · CPC title

• F27D15/02

  Cooling · CPC title

• F27B9/00

  Furnaces through which the charge is moved mechanically, e.g. of tunnel type (rotary-drum furnaces with means for agitating or moving the charge F27B7/14); Similar furnaces in which the charge moves by gravity · CPC title

• C21B13/00

  Making spongy iron or liquid steel, by direct processes · CPC title

• B65G69/20 Primary

  Auxiliary treatments, e.g. aerating, heating, humidifying, deaerating, cooling, de-watering or drying, during loading or unloading; Loading or unloading in a fluid medium other than air · CPC title