HANDLING DEVICE FOR LIQUOR GUNS OF A RECOVERY BOILER PLANT, A RECOVERY BOILER PLANT, AND A METHOD IN A RECOVERY BOILER

• US 20100154691A1
• Filed: 12/17/2009
• Published: 06/24/2010
• Est. Priority Date: 12/19/2008
• Status: Abandoned Application

• Current Assignee: Metso Paper Oy (Metso Corporation)
• Original Assignee: Metso Paper Oy (Metso Corporation)
• Inventors: Sainio, Heikki, Saarela, Ari
• Application Number:
  US12/640,768
• Publication Number:
  US 20100154691A1
• Time in Patent Office: Days
• US Class Current: 110/348
• CPC Class Codes: D21C 11/12 Combustion of pulp liquors

Abstract

A handling device for liquor guns (2) of a recovery boiler plant, which device comprises transfer means (11) for transferring a nozzle (7) of a liquor gun to the furnace (1) of a boiler and out from the furnace. In addition, the invention relates to a recovery boiler plant as well as a method in a recovery boiler plant.

Claims

1. A handling device for liquor guns of a recovery boiler plant, characterized in that the handling device comprises transfer means for transferring the nozzle of a liquor gun to the furnace of a boiler, and out from the furnace.

2. The handling device according to claim 1, characterized in that the handling device is arranged to handle at least two liquor guns and the handling device comprises moving means for moving the handling device from the first liquor gun to the second liquor gun.

3. The handling device according to claim 1, characterized in that the handling device comprises computer vision means, and by means of the computer vision, at least some of the following are determined:

the form of the spray formed by the liquor gun

droplet size

rodding need of the liquor gun

need to change the liquor gun

4. The handling device according to claim 1, characterized in that the handling device is arranged to define the location of the handling device by scanning the environment.

5. The handling device according to claim 1, characterized in that the handling device is arranged to perform at least one of the following:

starting and stopping the operator tasks connected to liquor combustion

rodding the liquor gun opening

cleaning the nozzle area

trimming the position of the gun

detaching the liquor gun

blowing the liquor gun clean, for example, to a blowing well

washing the liquor gun

changing the liquor gun

changing the nozzle

sampling the black liquor

16. The handling device according to claim 2, characterized in that the handling device comprises computer vision means, and by means of the computer vision, at least some of the following are determined:

the form of the spray formed by the liquor gun

droplet size

rodding need of the liquor gun

need to change the liquor gun

17. The handling device according claim 2, characterized in that the handling device is arranged to define the location of the handling device by scanning the environment.

18. The handling device according to claim 3, characterized in that the handling device is arranged to define the location of the handling device by scanning the environment.

19. The handling device according to claim 2, characterized in that the handling device is arranged to perform at least one of the following:

starting and stopping the operator tasks connected to liquor combustion

rodding the liquor gun opening

cleaning the nozzle area

trimming the position of the gun

detaching the liquor gun

blowing the liquor gun clean, for example, to a blowing well

washing the liquor gun

changing the liquor gun

changing the nozzle

sampling the black liquor

20. The handling device according to claim 3, characterized in that the handling device is arranged to perform at least one of the following:

starting and stopping the operator tasks connected to liquor combustion

rodding the liquor gun opening

cleaning the nozzle area

trimming the position of the gun

detaching the liquor gun

blowing the liquor gun clean, for example, to a blowing well

washing the liquor gun

changing the liquor gun

changing the nozzle

sampling the black liquor

6. A recovery boiler plant, which comprises a liquor gun area, wherein the nozzles of liquor guns are brought to a furnace via liquor gun openings, and which area comprises at least one handling device for liquor guns, characterized in that the handling device comprises transfer means for transferring the nozzle of the liquor gun to the furnace of the boiler and out of the furnace.

7. The recovery boiler plant according to claim 6, characterized in that the handling device is arranged to handle at least two liquor guns and the handling device comprises moving means for moving the handling device from the first liquor gun to the second liquor gun.

8. The recovery boiler plant according to claim 6, characterized in that the handling device comprises computer vision means, and by means of the computer vision at least some of the following are determined:

the form of the spray formed by the liquor gun

droplet size

rodding need of the liquor gun

need to change the liquor gun

9. The recovery boiler plant according to claim 6, characterized in that the valves used for connecting liquor guns are automated.

10. The recovery boiler plant according to claim 6, characterized in that the recovery boiler plant comprises

a hatch that can be used to close a liquor gun opening,

transfer means for moving the hatch.

11. A method in a recovery boiler plant, wherein black liquor is fed to a furnace with liquor guns via liquor gun openings, characterized in that the nozzle of the liquor gun is transferred to the furnace of the boiler and out of the furnace by an actuator.

12. The method according to claim 11, characterized in that several liquor guns are transferred individually with the handling device comprising the actuator.

13. The method according to claim 11, characterized in that with the handling device comprising the actuator, at least one of the following tasks is performed:

defining the form of the spray formed by the liquor gun

defining droplet size

defining whether the liquor gun needs rodding

defining whether the liquor gun needs to be changed

performing the operator tasks connected to starting and stopping liquor combustion

rodding the liquor gun opening

cleaning the nozzle area

trimming the position of the gun

detaching the liquor gun

blowing the liquor gun clean to, for example, a blowing well-washing the liquor gun

changing the liquor gun

changing the nozzle

sampling the black liquor

14. The method according to claim 11, characterized in that the hatch of the liquor gun opening is opened and closed by the same actuator that transfers the nozzle of the liquor gun to the furnace of the boiler and out from the boiler.

15. The method according to claim 11, characterized in that the handling device comprising the actuator is a moving 6-axis robot unit.