DE1494770A1 - Method for filling a container with acetylene gas - Google Patents

Description

American Cryogenios, Ino.

6ol, California Street

SAN Francisco / California _{13 # MAR 196YY}

Ü. 3. A, '■

H94770

Procedure for filling a container with acetylene pass

The finding relates to the filling of a Container with dissous gas and the purpose of the composition the filling tones the type of filling so too improve the fact that a shorter tent duration results in better strength.

The new process results from the special properties of the acetylene gas lake. It is known that acetylene gas, even in small quantities, can become very unstable at pressures greater than 1 kg / cm * "and certainly at pressures over 3.5 kg / cn ^2. This inatability can be reported by dissolving the acetylene in acetone. Aoetone dissolves 6 times its weight in acetylene In this way, when filling the container, gas pressures of 21 kg / era or even more can be achieved and a very porous material with a very small pore size can be used.

For the purposes mentioned above, the highly porous material be such that it does not settle, shrink or disintegrate. Otherwise there would be empty spaces arise in which the aceftylene gas under Druok can accumulate and thus become unstable. Therefore, in addition to the high porosity, the material must have a have high compressive strength, i.e. resistance to crumbling and also high dimensional stability.

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H94770

Many materials have been used for this purpose, for example charcoal compositions and fibrous asbestos dispersed and deposited in a silica-lime product. One has found out that certain proportions of the components are essential to each other, and if one If very specific conditions are observed, then they result in very suitable materials for the above purpose.

The invented product with a very improved Strength results from a powder mixture according to the following ratios:

Weight ratio Water to Solids 3 » ^ b Silica to lime 1.75 Asbestos, weight I and solids 18, ¹ Io Charcoal l8.4o

In addition, it has been found according to the invention that, in addition to the good material properties, time is also saved results in that certain process steps are observed in the preparation of the composition and when filling up, which are different from here. These procedural steps are described below.

As usual, the container is filled first produced by pretreating charcoal and lime.

Powdered lime is hydrated with water to form a sludge that contains about 2o dew.X calcium oxide.

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Holekohl kit with a piece size of 12.5 mm vorerweloht * Dlesee pre-softening according to the invention is < The process differs from the previously known processes. So far, the Holekohl has been at least 12 times which softened in water for a long time · According to the invention, on the other hand, the holi charcoal is only about 2 hours in water softened · During this shorter softening becomes the coal-water mixture, at least for a long time efeee part · β of the reward world, a vacuum exposed. This vacuum is expediently Applied for 10 minutes under a pressure of foo to? 5o sub mercury

Also the process of sun combining the charcoal, of lime, asbestos and water and the prevailing conditions are different from those of previously known method. So far, the asbestos was first set in water and then stirred, until all visible air bubbles were gone. Then, while stirring, the charcoal was tugasetst Silica was then added for 15 to 30 minutes. Finally, the was hydrogenated Lime sugesetct and mixed for 15 minutes, after which then the mixture could be poured into appropriate containers «

In the method according to the invention, the method according to the above new. Information vorerweichte Holxkohle the water xugesetst and silica is under \ stirring sugesetst. Then the charcoal-kleseic acid mixture is placed in a vacuum; with even addition of the lime sludge, also with stirring. The vacuum is then released and the asbestos is set, and the mixture is kept stirring for about half an hour, until the whole mass is homogeneous. Then 1st

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the liquid is ready to be poured into cylindrical containers. The proportions of the individual materials should correspond to the above table according to the invention. For example, in the various Process stages so much water added that the final ratio of water to solids is approximately 3.15. The proportion of asbestos is approximately 18.4o. Especially this number is significantly different than before and decisive for the improvement of the end product according to the invention " The invention also results in a substantial time saving. The process according to the invention is a one-step process and requires little time, while known methods required the first Fill the cylindrical container completely and then vibrate it, with settling times of several Hours resulted and where it had to be vibrated again and refilled, so the whole process had to be repeated.

According to the invention, the Füllschlanm in accordingly empty normal acetylene containers filled. Appropriately, the Schalmm is in a filling container introduced, from which it is then fed to the individual cylindrical containers.

One of the end caps of every cylindrical container is taken out and it becomes a vacuum line inserted so that the filling of the cylindrical container takes place under vacuum · Then Each cylindrical container is completely filled with mud; during the filling process, the * will be cylindrical The container vibrates and during this vibration, additional sludge is added. That Filling is done in a single quick

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H94770

len filling process · Then the · cylinders In so far usually hardened.

This hardening takes place during the holding application Prevention of kfasaerwlustes from the mud " It is advisable that the hardening takes place immediately after the container has been filled · As there is water during the heating process expands, but not allowed to escape, the tanks have hydraulic expansion heads.

The containers can be roasted in an oven at temperatures ranging from 80 to 87 ° C. Heating usually takes 15 to 16 hours, calculated from reaching a temperature of 80 ° C.

After hardening, the filling is dried and the water removed. The containers are then cooled and can then njit the acetylene-acetone liquid be filled.

The following investigation was made to characterize the advantages of the invention. It was then found that a filling according to the invention had a liquid of 23.59 kg / on ² . The porosity was 9o.6> and the density was 0.2 * 7 g / cm.

In contrast, a filling was analyzed which had been produced according to the previously known method. This known filling had a strength of 11.7 kg / cm ² , a porosity of 90.79 and a density of 0.257 g / e « ³ .

The material according to the invention thus has a GFCI superior advantage hlnalohtlioh of its Pestig-

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kelt at a desired high porosity and a low density about the same as with the previous ones Material.

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Claims (5)

H9A770 PATENT CLAIM Et 1.) Process for the production of a stable acetylene container filling, Characterized by the fact that charcoal softens in water, and the solution during at least a part of the expansion period is spread out in a vacuum, whereupon finely distributed watery " Silicic acid is sugesettt with stirring and the Mixture is again exposed to a vacuum with the addition of a Kalkachlammes, whereupon the vacuum is released and asbestos is tested while mixing f until all the components form a homogeneous wet, in which the components roughly follow each other Ratio exist! Weight ratio Water does solids 3.15 KIeeelslure do lime 1 · 75 Asbestos, Qew.S and pesticides 18, «.ο Holtkohle 18, Ho 2.) Process for the production of a stable acetylene container filling naoh claim 1, characterized in that the softening and mixing of the coal It takes k two hours and about io minutes under a vacuum of 700-750 mm mercury column. 3.) Process for the production of a stable ethylene tank filling according to claim 1, characterized in that the filling is made of charcoal and asbestos fibers which is dispersed in a silicic acid-lime product and are withdrawn. - 8 • Otti3 / O53ii BATH ORIGINAL -8- U94770 4.) Method of manufacture; a stable Acetylenbehfilterfüll according to claim 3 »characterized in that the container is filled with the tube» and then is vibrated while refilling the cavities resulting from the vibration, the container during of filling and vibrating is under vacuum, whereupon the container contents under pressure and heat with the water content is hardened in an oven and after being freed from the drum. 5.) A method for producing a stable acetylene container filling according to claim H, characterized in that the hardening takes place for 15-16 hours bti • iner temperature of the material core of about 8o - R7 ° C · BATH ORIGINAL 909883/0536