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Device for particle generation

A technology of pellets and nozzles, which is applied in the field of devices for generating particles, can solve problems such as nozzle clogging, and achieve the effects of avoiding nozzle clogging and saving heating energy

Inactive Publication Date: 2008-08-06
LINDE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This leads to the risk of nozzle clogging if the temperature of the melt is not sufficiently above the melting temperature of the material to be dropped

Method used

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  • Device for particle generation
  • Device for particle generation
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Embodiment Construction

[0031] FIG. 1 shows the drop-forming system of a so-called granulation plant for producing pellets by melt crystallization, as known from the prior art. A nozzle antechamber 1, into which a molten material enters, is situated on the head of the device shown. The nozzle antechamber 1 is kept at a temperature above the melting temperature of the material by means of hot thermal oil, which is located in an annular channel 2 surrounding the nozzle antechamber 1 .

[0032] The bottom 3 of the nozzle antechamber 1 has a plurality of holes 4 into which the nozzle 5 is screwed from below. The nozzle outlet 6 of the nozzle 5 has a distance 7 from the bottom 3 of the nozzle antechamber 1 , which is dependent on the length of the nozzle 5 .

[0033] During normal operation of the system, molten material is introduced from the nozzle antechamber 1 by controlled overpressure into the nozzle 5 , which divides the continuous melt flow into fine droplets 8 . The droplet 8 falls through a vi...

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Abstract

The invention relates to a device and a method for producing pellets by melt crystallization, comprising: a nozzle antechamber (1) for containing the melt; a nozzle (5) for producing molten droplets (8) and a A cooling pipe (11) for cooling the molten droplets (8), wherein a mechanism (13, 14, 18, 23) for preventing the nozzle (5) from being overcooled is provided.

Description

technical field [0001] The invention relates to a device for producing pellets by crystallization of a melt, having a nozzle antechamber for receiving the melt, a nozzle for producing molten droplets and a cooling tube for cooling the molten droplets. Furthermore, the invention relates to a method for producing pellets by crystallization of a melt, in which the melt is guided through a nozzle and droplets are produced which are subsequently crystallized. Background technique [0002] In the melt crystallization method, also known as granulation, a liquid melt is fed at the head of a cooling tube and divided into homogeneous droplets. The droplets fall down inside the hardening tube and come into contact with the cold gas stream. Here, the droplets harden into particles with a diameter preferably in the range from 0.4 to 2 mm. [0003] An important component of the droplet system is the nozzle, which is located at the upper end of the vertical cooling tube. The melt locate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J2/02B05B1/02B05B1/24
Inventor H-R·希门H-J·赖因哈特
Owner LINDE AG