Method and nozzle for suppressing the generation of iron-containing vapor

A nozzle, steam technology, applied in the direction of transportation and packaging, packaged food, packaged item types, etc., can solve the problems of limited available space, high installation cost, suction extraction equipment is not considered, etc.

Active Publication Date: 2013-09-25
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Suction extraction equipment for complete plant construction is often not considered not only for reasons of high installation costs but also because of the limited available space

Method used

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  • Method and nozzle for suppressing the generation of iron-containing vapor
  • Method and nozzle for suppressing the generation of iron-containing vapor
  • Method and nozzle for suppressing the generation of iron-containing vapor

Examples

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Embodiment Construction

[0042] figure 1 A top view of a nozzle 1 according to the invention is shown. Nozzle 1 has a CO 2 (carbon dioxide) inlet 3 and outlet 4 which are spaced apart by a distance 5 in the direction along the outlet axis 6 . During operation, liquid CO 2 It can be supplied at the inlet 3 via the inlet area 11 . Likewise, in figure 1 The inlet 12 tapering towards the inlet region 11 is shown in . Furthermore, a transverse axis 8 is shown in which the nozzle 1 widens from the inlet 3 along the outlet axis 6 towards the outlet 4 in the direction of the transverse axis 8 until an outlet width 10 is reached.

[0043] The nozzle 1 according to the invention is in figure 2 Shown in cross-section. The transition from the inlet 12 along the vertical axis 7 to the inlet region 11 at the inlet 3 can be seen in this view. Furthermore, it can be seen that the nozzle 1 tapers from the inlet 3 in the direction of the outlet axis 6 towards the outlet 4 in the direction of the vertical axis ...

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Abstract

A method, an installation and a nozzle (1) for suppressing the generation of iron-containing vapor during filling or emptying of a container (2) for an iron-containing metal melt with the aid of CO2 snow, a CO2 snow jet (22) being applied by means of the nozzle (1) dispersing in a substantially planar manner onto a surface of an iron-containing stream (23) which is poured into or out of the container (2). The invention consequently at least partially solves the technical problems outlined in connection with the prior art. In particular, a device is proposed which allows cost-effective and space-saving suppression of the generation of iron-containing vapor during the filling or emptying of a container 2 with the aid of a reduced CO2 snow quantity.

Description

technical field [0001] The invention relates to a method for filling or emptying vessels for ferrous metal melts by means of CO 2 Snow to suppress the formation of iron-containing vapors. Background technique [0002] In iron-containing melts, for example for pig iron, gray cast iron or steel, so-called "brown smoke" is formed on the surfaces of the melt that come into contact with the atmosphere. This brown smoke is attributed to a larger fraction consisting of iron oxide. The iron in the melt reacts with (atmospheric) oxygen and is released as vapor at the molecular level from the surface of the iron melt. Since this very fine dust can be easily inhaled into the lungs and both clogs them and is partially absorbed into the bloodstream, attempts have even been made before to expel the brown smoke, for example by means of suction extraction devices. [0003] For many processes that require a lot of space or are even performed outdoors, the use of suction extraction equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/14C21C1/06
CPCC21B7/14C21C7/0043C21C7/0068B65B29/00
Inventor D·维克C·温德霍维尔
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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