SU4595A1 - The method of preparation of the mass for the purification of acetylene and other gases - Google Patents

Description

According to existing methods, cleansing masses for acetylene and other gases are obtained by adding to this dough mixture from bleach such a quantity of calcium oxide hydrate or lime carbonate, and in some cases calcium chloride, so that the mass becomes hard and porous when dried. In this way, cleansing masses containing not more than 15% of active chlorine are prepared, but at the same time at least equivalent to the amount of active chlorine calcium chloride, which makes this mass hygroscopic, which is undesirable. The use of higher chlorine concentrations in the form of bleach is considered undesirable, in view of the danger posed by them in the sense of explosions.

The authors have found that, with particular benefit, the recent known basic calcium and magnesium hypochlorites, technically free of calcium chloride or magnesium chloride, can be used for the preparation of solid cleaning masses and are themselves very constant, due to which the content of active chlorine in the mass can be increased at least twice and eliminated the possibility of explosions. In order to give the mass a certain shape, an insignificant amount of a binding substance is added. The method of preparation of the cleansing mass is that the basic hypochlorites, which are dry or still wet after their preparation, are transported into the binder with the addition of water, after which they are shaped into grains. If necessary, drying is carried out using heat, with or without vacuum. As

gypsum or cements are used primarily for stinging substances, but other stinging substances that are not affected by hypochlorites can also be used.

In order to impart a significant porosity to the mass, such substances are added which, by themselves or together with inert constituents, split the gases already at ordinary temperature. As such substances, for example, light metals, such as magnesium, aluminum, or their alloys, which in powder form are admixed to the dough mass from hypochlorites with the addition of earthing substances, are suitable. Metals in an alkaline, humid and warm environment separate hydrogen and, thus, very evenly loosen the pasty mass, without reducing the content of active chlorine in it. The consumption of substances developing gases is very insignificant enough, for example, 0.1% of powdered magnesium of dg in order to obtain a mass with a very large porosity. The degree of porosity, in addition, can be set as desired. Such impurities, Kotopbie develop gases, while the consumption of active chlorine, such as ammonia or peroxide, is less appropriate.

The drying of the porous cleansing mass occurs almost without loss of active chlorine, due to the constant hypochlorite compounds. The resulting product is non-hygroscopic and contains 30-40% of active chlorine, due to which a longer service life of the reservoir and a large load of the purification plant are achieved, due to the constancy of the main hypochlorites with temperature.

The subject of the patent.

Claims (3)

1. A method for preparing a pulp for purifying acetylene and other gases containing calcium or magnesium hypochlorites, characterized in that basic calcium or magnesium hypochlorites free from chlorides are mixed with cementing materials and molded to obtain grains. 2. Acceptance of the method according to claim 1, characterized in that in order to increase the porosity of the mass, substances are added to it before it hardens, which in an alkaline medium emit gases when interacting with hypochlorite or without its participation. 3. Acceptance of the method of claim 1 and 2, characterized in that metals, for example, aluminum or magnesium in a highly ground form, are used as substances developing gases.