Method for producing a powder from a liquid substance or...

B - Operations – Transporting – 01 – J

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B01J 2/04 (2006.01) A23G 1/04 (2006.01) A23G 3/02 (2006.01) A23L 1/00 (2006.01) A23L 1/223 (2006.01) A23L 1/275 (2006.01) A23L 3/40 (2006.01) A23P 1/06 (2006.01) A61K 9/00 (2006.01) A61K 9/16 (2006.01) B01J 2/00 (2006.01)

Patent

CA 2307370

According to the inventive method for producing a powder product from a liquid substance or mixture of substances, the liquid substance or mixture of substances to be pulverised is first provided in a pressurised container (10). A gas is then dissolved in the substance or mixture of substances at high pressure. The resulting liquid/gas solution is guided out of the pressurised container to an expansion device (20). The solution is passed through said expansion device where it rapidly expands. A solid powder auxiliary substance is added either before the solution enters the expansion device, whilst it is in said device or afterwards, especially shortly afterwards. In this way a stable, powder product is formed from the substance or mixture of substances.

L'invention concerne un procédé de production d'un produit sous forme de poudre à partir d'une substance liquide ou d'un mélange de substances liquide, selon lequel on prépare d'abord la substance liquide ou le mélange de substances liquide à pulvériser dans un récipient sous pression (10). Ensuite, on dissout un gaz dans la substance liquide ou le mélange de substances liquide sous une pression élevée. La solution liquide/gaz produite est alors conduite à l'extérieur du récipient sous pression, jusqu'à un organe de détente (20), à travers lequel elle est dirigée, ce qui provoque sa détente rapide. Avant, dans ou après l'organe de détente, en particulier juste après l'organe de détente, est mélangée une substance auxiliaire solide, sous forme de poudre. De cette façon, un produit sous forme de poudre stable est produit à partir de la solution ou de la substance, ou bien du mélange de substances.

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