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CN-122003299-A - Nozzle device

CN122003299ACN 122003299 ACN122003299 ACN 122003299ACN-122003299-A

Abstract

The invention relates to a nozzle arrangement, in particular for a fluidized bed agglomeration process, comprising a base body (10) and at least one nozzle (50) having a first outlet (56), wherein the nozzle arrangement (100) has at least one first fluid channel (14) for a first fluid, at least one second fluid channel (12) for a second fluid and at least one cleaning channel (16) for a cleaning medium, which is in fluid communication with the first outlet (56), wherein the nozzle (50) is surrounded by a nozzle cap (200) which extends from the base body (10) to the first outlet (56) of the nozzle (50) and has a nozzle cap tip (210), a nozzle cap body (242) and a nozzle cap base (230) facing the base body (10), wherein the nozzle arrangement has at least one cleaning opening (605, 705, 805), wherein the cleaning channel (16) is in fluid communication with the cleaning opening (605, 705, 805), characterized in that the at least one cleaning opening (605, 705, 805) is arranged on the outer surface of the nozzle cap (242) or between the nozzle cap and the base body (10).

Inventors

  • Oliver Lune
  • PETER KLEIN
  • Kurt Maximilian Damen
  • Ralph Bublitz
  • Pierre Kasnico
  • John Streeshakov
  • Daniel Figg

Assignees

  • 祖德楚克尔股份公司

Dates

Publication Date
20260508
Application Date
20241106
Priority Date
20231107

Claims (20)

  1. 1. Nozzle arrangement, in particular for a fluidized bed agglomeration process, comprising a base body (10) and at least one nozzle (50) having a first outlet (56), wherein the nozzle arrangement (100) has at least one first fluid channel (14) for a first fluid, at least one second fluid channel (12) for a second fluid and at least one cleaning channel (16) for a cleaning medium in fluid communication with the first outlet (56), and wherein the nozzle (50) is surrounded by a nozzle cap (200), the nozzle cap (200) extending from the base body (10) to the first outlet (56) of the nozzle (50) and having a nozzle cap tip (210), a nozzle cap body (242) and a nozzle cap base (230) facing the base body (10), Wherein the nozzle device has at least one cleaning opening (605, 705, 805), wherein the cleaning channel (16) is in fluid communication with the at least one cleaning opening (605, 705, 805), It is characterized in that the method comprises the steps of, At least one of the cleaning ports (605, 705, 805) is arranged on an outer surface of the nozzle cap body (242) or between the nozzle cap base (230) and the base body (10).
  2. 2. Nozzle apparatus according to claim 1, wherein a particularly annular distribution member (400) is arranged between the nozzle cap base (230) and the base body (10), the distribution member (400) at least sectionally defining a distribution channel (500), the distribution channel (500) particularly encircling the nozzle (50) in an annular shape and being in fluid communication with the cleaning channel (16).
  3. 3. The nozzle device according to claim 1 or 2, wherein at least one inlet (270) is arranged at the nozzle cap base (230) for letting in cleaning gas from the distribution channel (500) into the nozzle cap (200).
  4. 4. Nozzle apparatus according to any one of the preceding claims, wherein the nozzle cap (200) has a nozzle cap outer wall (240) and a nozzle cap inner wall (250), the nozzle cap inner wall (250) being connected with the nozzle cap outer wall (240), in particular by bridging ribs (275), and together delimiting a nozzle cap cavity (260).
  5. 5. The nozzle apparatus according to any one of the preceding claims, wherein a first gap (600) is configured between the base body (10) and the dispensing member (400) in fluid communication with the dispensing channel (500).
  6. 6. The nozzle apparatus according to any of the preceding claims, wherein a second gap (700) is configured between the dispensing member (400) and a nozzle cap outer wall (240) of the nozzle cap (200) in fluid communication with the dispensing channel (500).
  7. 7. The nozzle apparatus according to any one of the preceding claims, wherein a third gap (800) is configured in the nozzle cap tip (210) in fluid communication with the dispensing channel (500) via the nozzle cap cavity (260).
  8. 8. The nozzle apparatus according to any of the preceding claims, wherein the nozzle cap inner wall (250) protrudes from the nozzle cap (200) at its end facing the nozzle cap base (230) relative to the nozzle cap outer wall (240).
  9. 9. The nozzle apparatus according to any one of the preceding claims, wherein the nozzle cap inner wall (250) rests on the dispensing member (400) and an annular cavity (810) is configured between the nozzle cap outer wall (240) and the dispensing member (400), the second gap (700) being in fluid communication with the dispensing channel (500) via the annular cavity (810).
  10. 10. Nozzle apparatus according to any one of the preceding claims, wherein the dispenser (400) has a dispenser shaft (406) and a dispenser head (405) protruding from the dispenser shaft (406), the dispenser head (405) having a circumferential dispenser shoulder (407).
  11. 11. Nozzle apparatus according to one of the preceding claims, wherein a distributor shoulder (407) of the distributor (400) has a rib (460), in particular in the form of an annular ring.
  12. 12. The nozzle apparatus according to any of the preceding claims, wherein the dispensing member (400) has at least one opening (410), the dispensing channel (500) being in fluid communication with the nozzle cap cavity (260) of the nozzle cap (200) via the opening (410).
  13. 13. Nozzle apparatus according to any one of the preceding claims, wherein the inlet (270) is at least sectionally of annular configuration.
  14. 14. Nozzle device according to any of the preceding claims, wherein the nozzle device (100) has a control unit (90), the control unit (90) being associated with the cleaning gas channel (16) and enabling compressed air pulse cleaning.
  15. 15. Nozzle device according to any of the preceding claims, wherein the nozzle (50) and the nozzle cap (200) are configured such that they can be reversibly introduced, in particular screwed, into a recess of the base body (10).
  16. 16. Nozzle device according to any of the preceding claims, wherein the nozzle (50) is a two-component nozzle, in particular an external-or internal-mixing two-component nozzle or a high-pressure nozzle (single-component nozzle).
  17. 17. Nozzle arrangement, in particular for a fluidized bed agglomeration process, comprising a base body (10) and at least one nozzle (50) having a first outlet (56), wherein the nozzle arrangement (100) has at least one first fluid channel (14) for a first fluid, at least one second fluid channel (12) for a second fluid and at least one cleaning channel (16) for a cleaning medium in fluid communication with the first outlet (56), and wherein the nozzle (50) is surrounded by a nozzle cap (200), the nozzle cap (200) extending from the base body (10) to the first outlet (56) of the nozzle (50) and having a nozzle cap tip (210), a nozzle cap body (242) and a nozzle cap base (230) facing the base body (10), wherein the nozzle arrangement (100) has at least one cleaning port (605, 705, 805), wherein the cleaning channel (605) is in fluid communication with the at least one cleaning port (605, 705, 805), It is characterized in that the method comprises the steps of, The nozzle device (100) has a control device (90), the control device (90) being configured to pulse out the cleaning medium from the at least one cleaning opening (605, 705, 805) at least in pulsed operation.
  18. 18. A fluidized bed process for preparing agglomerated solid particles from a material to be agglomerated, wherein the material to be agglomerated is agglomerated by means of a nozzle device (1) according to any one of claims 1 to 17.
  19. 19. The fluidized bed process according to claim 18, wherein the material to be agglomerated is isomalt or an isomalt-containing mixture.
  20. 20. Fluidized bed process according to claim 18 or 19, wherein the cleaning medium is pulsed to the nozzle device (100).

Description

Nozzle device Technical Field The present invention relates to a nozzle device and a method for preparing agglomerated material, in particular using the nozzle device. Background During agglomeration of solid particles in a fluidized bed, nozzle devices, in particular spray guns with two-component nozzles, are often used because of the fine droplet spectrum. A typical problem faced by existing spray systems is the tendency for solid deposits to form in the supply line, inside the nozzle, at the nozzle cap area and at the nozzle orifice. These deposits can significantly affect the droplet size distribution of the nebulized medium. To ensure reliable operation, the spray gun must be frequently disassembled for cleaning, which results in shortened operating life and increased costs. Another typical problem is that the sediment causes an increase in the consumption of compressed air, which results in high operating costs. According to the corresponding prior art of DE102014003877, a purge cleaning is carried out by continuously introducing compressed air at low pressure (so-called air curtain). This document describes a continuously operating low pressure gas curtain which can be applied to a flue gas stream containing a large amount of particles. However, for fluid bed applications, the contact between the wetted particles and the nozzle structure is significantly denser, and such a curtain of air flow intended to keep the nozzle opening clear is no longer active. Disclosure of Invention The technical aim of the present invention is to propose a lance and a method for agglomerating material that overcome the above-mentioned technical problems, in particular to provide a lance that is able to reduce scaling in the nozzle cap and its surrounding area during operation (in particular in a fluidized bed) and that can be cleaned without dismantling the lance. In order to solve the technical problems, the invention provides the technical proposal described in the independent claims, the dependent claims and the specification. In order to achieve the object mentioned above, the invention proposes in particular a nozzle arrangement, in particular for a fluidized bed agglomeration process, comprising a base body and at least one nozzle having a first outlet, wherein the nozzle arrangement has at least one first fluid channel for a first fluid, at least one second fluid channel for a second fluid and at least one cleaning channel for a cleaning medium in fluid communication with the first outlet, wherein the nozzle is surrounded by a nozzle cap, which extends from the base body to the first outlet of the nozzle and has a nozzle cap tip, a nozzle cap cover body and a nozzle cap base facing the base body, wherein the nozzle arrangement has at least one cleaning opening, wherein the cleaning channel is in fluid communication with the cleaning opening. The nozzle device is characterized in that at least one cleaning opening is arranged on the outer surface of the nozzle cap body or between the nozzle cap base and the base body. In this way, in particular, fouling of the nozzle device, in particular of the nozzle cap, the adjacent base body and the nozzle cap tip and nozzle, can be avoided. In addition, this also increases the operational life. Such a nozzle device can be operated for a longer period of time before maintenance work and/or disassembly is required. Overall, a cleaning action is obtained which allows a long-term operation of the nozzle device. The nozzle device provided according to the invention allows the first fluid, such as a spray liquid, in particular water, to be atomized with the second fluid, such as an atomizing gas, in particular air, so that the solid particles located in the fluidized bed can be agglomerated without causing disturbing scaling on the nozzle device. The nozzle device is preferably configured as a spray gun. In this context, the base body is in particular an elongated feed arm of the spray gun, in particular with respect to the actual nozzle. In this context, "nozzle cap base" refers in particular to the lower end of the nozzle cap facing the substrate. The nozzle device preferably has a central axis. The central axis preferably corresponds to the main flow direction of the first fluid when the first fluid flows out and/or the direction of extension of the first fluid channel in the first outlet region. Preferably, the first fluid channel is configured as a liquid channel configured to flow a first fluid through the liquid channel and to direct the first fluid to the first outlet, wherein the first fluid is preferably a spray liquid that can be led out via the first outlet. The nozzle device is preferably designed to apply the first fluid in particular in the form of droplets in a jet (i.e. preferably in discrete volume units). Preferably, the second fluid channel is configured as an atomizing gas channel configured to flow the second fluid through the atomizing gas channel and to dire