Calcium silicate mass for storing acetylene gas

B - Operations – Transporting – 01 – J

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B01J 20/10 (2006.01) F17C 11/00 (2006.01)

Patent

CA 2210352

A hardened asbestos-free, porous, calcium silicate filler material (50) for an acetylene storage vessel (10) is made by mixing quicklime with water to form a first mixture. Then ground quartz silica is added to form a second mixture. A fibrous reinforcing material is blended in to form a third mixture. A precipitated silica (or synthetic silica) is added and homogenized to form a fourth mixture. The fourth mixture is transferred into a cylinder (10) to be filled and is cured under saturated steam pressure. Thereafter, the cylinder (10) is dried. A gas storage cylinder (10) so formed has a monolithic dry mass (50) filling a metal shell (20). The mass (50) has a porosity of about 88 to 92 %, a density in the range of 250 g/l to 350 g/l, and a crush strength of 250 to 550 psig.

L'invention concerne une masse de remplissage en silicate de calcium, poreuse, dépourvue d'amiante et durcie (50), pour récipient de stockage de l'acétylène (10), que l'on obtient en mélangeant de la chaux vive et de l'eau pour former un premier mélange, puis en ajoutant de la silice quartzeuse pulvérisée pour former un second mélange, en ajoutant un matériau de renfort fibreux pour former un troisième mélange et, enfin, en ajoutant de la silice précipitée (ou de la silice synthétique) et en l'homogénéisant pour former un quatrième mélange. On transfère ce quatrième mélange dans un cylindre (10) de remplissage pour le vulcaniser sous pression de vapeur saturée. On sèche ensuite le cylindre (10). Un cylindre de stockage de gaz (10) ainsi formé, est constitué d'une masse sèche monolithique (50) remplissant une coque métallique (20). La masse (50) a une porositée d'environ 88 à 92 %, une densité comprise entre 250 g/l et 350 g/l, et une résistance à la compression de 250 à 550 psi.g.

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