SU1682257A1 - Method for storing self-inflammable loose materials - Google Patents

Abstract

The invention relates to methods for storing or transporting bulk cargoes, preferably metallic pellets and other goods that are prone to self-heating and fire. The purpose of the invention is to increase fire safety. Solid carbon dioxide and bulk material are fed in layers or interleaved into the bunker. Being in a stack, solid carbon dioxide sublimates. Gaseous carbon dioxide fills the space between the particles of the material, squeezing atmospheric air out of the cargo stack, excluding self-heating and ignition. 4 il.

Description

The invention relates to the storage and transportation of bulk cargoes, such as metalized pellets and grain, i.e. products that require in order to ensure its safe transportation or storage of oxygen-free conditions in order to avoid self-heating of the cargo.

The purpose of the invention is to increase fire safety.

FIG. 1-3 schematically shows the layer-by-layer loading of bulk material and solid carbon dioxide; in fig. 4 - simultaneous loading of solid carbon dioxide and cargo.

The method is implemented on a vessel or storage as follows.

At the beginning of loading, using a shipbinder 1 or other means of loading, a portion of solid carbon dioxide 3 (in crushed form) is supplied to cargo area 2, which is distributed over the payload cargo area (Fig. 1).

Then a portion of cargo 4 is fed, the layer of which is evenly distributed over the surface of a layer of solid carbon dioxide (Fig. 2). Next, a portion of carbon dioxide, then a portion of the load, etc. is supplied again. The load stack after the end of loading is a cake of layers of cargo and solid carbon dioxide (Fig. 3).

When combined loading in the bunker 5, the cargo 4 is mixed with solid carbon dioxide 3, from where the ship loader 1 mixes the mixture directly into cargo space 2 (Fig. 4). Solid carbon dioxide (dry ice) has a temperature of about minus 78 ° C and sublimates at higher temperatures — it goes from a solid to a gaseous, liquid stage. Therefore, being in a stack of cargo that is usually temperate

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20-30 ° C, solid carbon dioxide begins to sublimate. Gaseous carbon dioxide fills the intergranular space of the cargo and is retained in the lower part of the cargo area because it is heavier than air.

As the carbon dioxide gas sublimates, it squeezes out the remaining air from the stack of the unfilled space and gradually floods it. A related effect is also some cooling of the load, which is a positive factor in preventing self-heating and fire of the load.

The method provides a uniform distribution of carbon dioxide in the mass of the cargo,

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which prevents self-heating and fire burning.

Claims (1)

Invention Formula A method of storing self-igniting bulk materials in a container, which includes introducing carbon dioxide into the container, characterized in that, in order to improve fire safety, the introduction of carbon dioxide into the container is carried out simultaneously with loading it with material, and solid ground material is used. phase of carbon dioxide, evenly distributes the latter in the loaded volume of material; (Rig. solid dioxide, carbon five Have Fig.Z cargo I i X Phage.2 cargo / I Fm.4