Patent US3645936A successfully refreshed from Google Patents.
Patent EP0190495A2 successfully refreshed from Google Patents.
EP0190495A2
Expired / Lapsed
EP
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Polymer gel and use thereof for separating components from liquid resulting from desulfurization and decyanization process
Assignee: Japan Exlan Co Ltd
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Filing: 1985-12-06
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Granted: —
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Expires: 2005-12-06
Abstract
Abstract A gel of a cross-linked polymer more than 50 weight %, desirably more than 60 weight %, and more desirably more than 70 weight %, of whose repeating units are selected from 2,3-dioxypropyl (meth)acrylate and 2,3-dioxypropyl (meth)allyl ether moieties, the average particle diameter of the gel being more than 10 µ, preferably from 30 to 150 µ, and the gel water content being from 30 to 150%, preferably from 50 to 100%. The gel is effective for separating rhodanates from liquid resulting from the desulfurization and decyanization of gases, the rhodanate being recoverable in high purity and other separated components being returnable to the desulfurization step.
Inventors
- 👤 Toshiyuki Kobashi
- 👤 Hideo Naka
- 👤 Jinya Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 07:44
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01J; B01J20/00; B01J20/22; B01J20/26; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/903; Y10S210/904; Y10S210/917
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A gel for the separation of useful components from a rhodanate-containing liquid resulting from a detoxification process, the gel being of a cross-linked polymer more than 50 weight % of whose repeating units are selected from 2,3-dioxypropyl (meth)acrylate and 2,3-dioxypropyl (meth)allyl ether moities, the gel having an average particle diameter of more than 10 µ and a water content of from 30 to 150%.
Claim 2
Dependent Claim
64 words
A gel for the separation of useful components from a rhodanate-containing liquid resulting from a detoxification process, the gel being of a cross-linked polymer more than 50 weight % of whose repeating units are selected from 2,3-dioxypropyl (meth)acrylate and 2,3-dioxypropyl (meth)allyl ether moities, the gel having an average particle diameter of more than 10 µ and a water content of from 30 to 150%.
Claim 3
Dependent Claim
24 words
A gel according to claim 1 of a cross-linked polymer more than 70 weight % of whose repeating units are selected from said moieties.
Claim 4
Dependent Claim
19 words
A gel according to claim 1 or 2 having an average particle diameter of from 30 to 150 µ.
Claim 5
Independent Claim
33 words
A method of treating rhodanate-containing liquid from a desulfurization and decyanization process, the method comprising separating the rhodanate component from the liquid by gel filtration using a gel according to any preceding claim.
Claim 6
Independent Claim
25 words
A method according to claium 4 wherein other components eluted from the gel separately from the rhodanate are recycled for use in the desulfurization step.
Claim 7
Independent Claim
25 words
A method according to claium 4 wherein other components eluted from the gel separately from the rhodanate are recycled for use in the desulfurization step.
Claim 8
Independent Claim
65 words
A method of separating useful components from a rhodanate-containing detoxification treated liquid, characterised by separateing the rhodanate, by gel filtration, from an aqueous solution containing a rhodanate as the main component and obtained by the desulfurization and decyanization treatment of a gas containing hydrogen sulfide and hydrogen cyanide, and by reusing the aqueous solution containing the remaining components as the desulfurization and decyanization treatment liquid.
Claim 9
Independent Claim
65 words
A method of separating useful components from a rhodanate-containing detoxification treated liquid, characterised by separateing the rhodanate, by gel filtration, from an aqueous solution containing a rhodanate as the main component and obtained by the desulfurization and decyanization treatment of a gas containing hydrogen sulfide and hydrogen cyanide, and by reusing the aqueous solution containing the remaining components as the desulfurization and decyanization treatment liquid.
References Cited (Backward Citations)
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