EP0048099A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for removing water from gel materials
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1981-08-26
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Granted: —
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Expires: 2001-08-26
Abstract
Abstract The present invention relates to the treatment of gel materials to remove water therefrom. The invention provides a process for removing water from a gel material by contacting the gel material with a gaseous mixture of an organic compound and a gas. The organic compound, the gas and conditions of contacting are selected such that water is extracted from the gel material and passes into the gaseous mixture. The invention in one embodiment may be used to dry gel materials whilst maintaining an open porous network therein.
Inventors
- 👤 Edward Sydney Lane
- 👤 John Alan Winter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 10:04
CPC Classifications
B; B01; B01D; B01D12/00; B01J; B01J13/00; B01J13/0052; B01J13/0069; B01J2/00; B01J2/02; B01J2/06; B01J2/08; F; F26; F26B; F26B21/00; F26B21/40
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
52 words
A process for removing water from a gel material characterised by contacting the gel material with a gaseous mixture comprising an organic compound and a gas, the organic compound, the gas and conditions of contacting being selected such that water is removed from the gel material and passes into the gaseous mixture.
Claim 2
Dependent Claim
52 words
A process for removing water from a gel material characterised by contacting the gel material with a gaseous mixture comprising an organic compound and a gas, the organic compound, the gas and conditions of contacting being selected such that water is removed from the gel material and passes into the gaseous mixture.
Claim 3
Dependent Claim
41 words
A process as claimed in claim 1, for removing water from a gel material whilst maintaining an open porous network therein, wherein the organic compound in the gaseous mixture is such that organic compound is taken up by the gel material.
Claim 4
Dependent Claim
107 words
A process as claimed in claim 1 or claim 2 for removing water from a gel material having an open porous network which comprises contacting the gel material'with a gaseous mixture comprising an organic compound and a gas, wherein the organic compound, the gas and conditions of contacting are selected such that water is removed from the gel material and passes into the gaseous mixture, and wherein the organic compound is such that it permeats the gel material so as to maintain an open porous network as water is extracted and such that an open porous network remains after removal of organic compound from the gel material.
Claim 5
Dependent Claim
20 words
A process as claimed in any preceding claim wherein the gel material comprises a plurality of particles of gel material.
Claim 6
Dependent Claim
26 words
A process as claimed in any one of the preceding claims wherein the gaseous mixture comprises a gas and a vapour derived from an organic liquid.
Claim 7
Dependent Claim
23 words
A process as claimed in claim 5 wherein the gaseous mixture is formed by passing a gas through or over an organic liquid.
Claim 8
Dependent Claim
21 words
A process as claimed in any one of the preceding claims wherein the gas is air, nitrogen, argon or carbon dioxide.
Claim 9
Dependent Claim
33 words
A process as claimed in any one of the preceding claims wherein the contacting of the gel material with the gaseous mixture is achieved by passing the gaseous mixture over the gel material.
Claim 10
Dependent Claim
37 words
A process as claimed in any one of the preceding claims wherein the contacting of the gel material with the gaseous mixture is achieved by passing the gaseous mixture over or through a bed of gel bodies.
Claim 11
Dependent Claim
38 words
A process as claimed in any one of the preceding claims wherein the organic compound is in the form of vapour of an organic liquid comprising an aliphatic alcohol or a related homologue, amyl alcohol or an amine.
Claim 12
Dependent Claim
33 words
A process as claimed in any one of claims 1 to 9 wherein the organic compound is in the form of vapour of an organic liquid comprising a hydrocarbon or a halogenated hydrocarbon.
Claim 13
Dependent Claim
29 words
A process as claimed in any one of the preceding claims wherein the gel material is conditioned with water prior to the removing of water from the gel material.
Claim 14
Dependent Claim
31 words
A process as claimed in any one of the preceding claims wherein the gel material has been produced by a gel precipitation process, a sol-gel process or an internal gelation process.
Claim 15
Dependent Claim
31 words
A process as claimed in any one of claims 1 to 13 including the further step of producing a ceramic product by heating gel material from which water has been removed.
References Cited (Backward Citations)
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