CS219627B1 - Facility for liquidation of the alcalic metal residue - Google Patents

Description

3 4 219627

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for the disposal of alkali metal residues which is suitable for the use of various technologies, for example for the disposal of alkali metal residues by water vapor, water or liquid melt and the like. When operating equipment with alkali metals It is necessary to clean the equipment components from their residues as well as to dispose of their residues during operation. For this purpose, closed devices or objects are used because the process of disposal of alkali metals produces substances harmful to living organisms. The various processes used in disposal facilities or objects utilize alkaline metal reactants to dispose of alkaline metals.

In addition to the advantages, each reagent has some disadvantages due to the characteristics of the articles to be cleaned, their size, complexity, type of material and also the amount of residual alkali metal. The various reagents used to remove residues have an effect on the speed, safety, and economy of the disposal process, for example, the use of alcohol is preferable, for medium or large objects it is preferable to replace alcohol with water mist, while for large objects appears to be the most suitable combination of water vapor with an inert gas. However, the use of one reactant limits the practicability of other reagents in the same object or device.

The aforementioned drawbacks are eliminated by the device according to the invention, which is intended for the disposal of alkali metals, in particular hydrogen, potassium and sodium-potassium alloy, which consists of a cylindrical vessel with a support layer, in which casings of operating media are carried out. an insertion opening and openings of gaseous and liquid reaction effluents, wherein the container is also equipped with its own surface electrical heating by measuring sensors. The essence of the device according to the invention is that the container is protected by a rigid scraping through the distributor of the medium distribution and a set of technological sight glasses is made in the container shell. These monitors have different functional uses, since they pass through beams from the light source located outside the container and for moving the moving nozzles with the water or liquid reaction mist connected to the pressure source. The gaseous reaction effluent line is discharged to the separator and the piping of the liquid reaction waste to the neutralization sump with the aeration grate. The set of technological visors is made up of at least four visors, one of which is designed as a viewing window for the ongoing reaction. The individual technological visors are functionally interchangeable, i.e. in one case the visor can be used for a movable nozzle, in the latter case for the passage of beams from a light source, in the third case as a viewing window.

The main advantage of the device according to the invention is that, in one single device, several different alkali metal disposal technologies can be used, always the most advantageous, that is to say, according to the nature of the object being cleaned or disposed of. that the device according to the invention provides greater versatility of use and allows for a greater efficiency of the disposal process. An exemplary embodiment of an alkali metal residue disposal device according to the invention is shown schematically in the accompanying drawings, in which: Figure 1 is a general arrangement of an alkali metal residue disposal line;

The main part of the whole line (Fig. 1) is the cylindrical vessel 1, the so-called liquidation chamber with grate 6, the insertion opening 19 and the solid dispenser 3 of the operating medium, ie water vapor, liquid or inert gas. In the casing of the liquidation chamber there is a systematic inspection window 5 (Fig. 2), in which the movable nozzles 2 and the sight glass 22 are located, and through which the downstream chamber penetrates the light from the light source 4 located outside the liquidation chamber. is provided at the outer surface with surface electric heaters 7, pressure sensors 6 and temperature sensors 9. Water vapor inlets 23 and inert gas inlet 25, water inlet 26 or other reaction liquid inlet 27 are provided in the chamber. is connected to the atmosphere via a gas conduit 28 via a separator 13 which is designed as a bubbling filling column.

The lower part of the liquidation chamber is connected via a line 33 of liquid reaction waste through a neutralization sump 17 with an aeration grate 18 to the sewer.

The alkali metal contaminated object or the alkali metal itself is placed on the grate 6 of the disposal chamber and the insertion opening 19 is closed. Depending on the amount of metal being disposed of, the nature and size of the object to be cleaned, then in the device. use different methods of disposal. a) After filling the preheated inner space of the liquidation chamber with inert gas from distributor 3 and source 12, water vapor permits the distributor 3 through the mixer 11 to mix water vapor and inert gas. The relative proportions of the two components can be regulated by measuring the flow rate of the annular elements 29. The glass apertures 22 and the illumination of the light source 4 can be visually monitored for the ongoing reaction, which is a security sensor 9 and a pressure gauge 8. Reaction termination and closure

Claims (2)

The water of the vapor chamber and the inert gas is rinsed with water from the distributor 3. b) When using a water or liquid reaction mist to dispose of alkaline residues, the reaction mist is formed by a pressure jet. air or inert gas and entrained water or other reaction liquid in movable nozzles 2 which are rotatably and retractably disposed in the process ports 5 on the housing of the disposal chamber to direct the cone of the flowing mist of the desired location in the disposal chamber. The conduit can be used either by pressure tap water or by an auxiliary pump, or as a gravity reservoir 10. For the use of a different reaction liquid (lower higher alcohols, monobasic and polyhydric alcohols, acid solutions, etc.), the gravitational reservoir 20 serves the sequence of the liquidation process in the liquidation chamber with the light sources 4 and 9 and 9. .After the reaction is completed, the rinsing chamber is again rinsed with water from the distributor 3. During this process, gaseous products are formed with arerosols (NaaO, NaOH, object An apparatus for disposing of alkali metal residues, in particular sodium, potassium and sodium-potassium sodium, consisting of a cylindrical vessel with a support grate, in which the process media inlets are provided, inlet and outlet of gaseous and liquid reaction vessels. the waste container, the container being also provided with its own surface electric heating and measuring sensors, characterized in that the container (1) is provided with a fixed spray of the distributor (3) for the distribution of the medium and a set of technological inspection glasses (5) for the container in the container (1) passage of beams from the light source (4) of the non-cavity (1) -a for the passage of the movable Nazi, which are conveyed to the separator 13, whose filling 14 deposited on the sieve 21 is continuously sprayed with water from the distributor 15 The level of flooding of the charge is monitored by level indicator 30 and is; The desired reaction rate is maintained by opening or closing the respective overflow line 31. The gaseous reaction wastes from the disposal chamber pass from the distribution tube 32 through the entire layer of scraped charge, are absorbed and dispersed, with the alkali metal vapors and aerosols remaining in the water. Only air or harmless gaseous components (e.g. hydrogen) are introduced into the atmosphere. Liquid r-reactive wastes from the liquidation chamber and the separator 13 are fused further into the neutralization wells 17 with the aeration tray 18, where the necessary chemicals are aerated or added and diluted and neutralized from the neutralization tank 34 prior to final discharge into the sewer. . The described device is advantageously usable for all workplaces dealing with the development and operation of sodium devices, especially for circulation and convection sodium loops. of the invention, the nozzles (2) with water or liquid reaction mist, wherein the movable nozzles (2) are connected to a pressure source, while the conduit (28) of gaseous reaction wastes is led to a separator (13) and a pipe (33) of liquid reaction vessels. waste to a neutralization tank (17) with an aeration grid. 2. Apparatus according to claim 1, characterized in that the set of technological visors (5) is formed by at least four technological apertures (5), at least one of which is shown as a viewing window (22), and the individual technological apertures (5) are functional. interchangeable. 2 sheets of drawings