EP0586830A1
Expired / Lapsed
EP
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Apparatus and method for removing hydrocarbons from gaseous mixtures
Assignee: Corning Inc
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Filing: 1993-07-13
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Granted: —
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Expires: 2013-07-13
Abstract
Abstract A method and system are disclosed for removing hydrocarbons from a gaseous mixture which comprises water and hydrocarbons which comprises contacting the mixture with a first stage comprising hydrophilic material to remove at least some of the water therefrom and produce a drier mixture, and thereafter contacting the drier mixture with a second stage comprising an agent for removing hydrocarbons, to produce a purified mixture.
Inventors
- 👤 William Hertl
- 👤 Irwin Morris Lachman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 20:27
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/0807; F01N3/0828; F01N3/0835; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9481; B01D53/02; B01D53/04; B01D53/0454; B01D53/26; B01D53/261; F01N3/10; F01N3/18; F01N3/20; B01J; B01J37/00; B01J37/02; B01J37/024; B01J37/0246; F01N2250/00; F01N2250/12; F01N2370/00; F01N2370/22; F01N2370/24; Y; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A method for removing hydrocarbons from a gaseous mixture which comprises water and hydrocarbons, the method comprising: a) contacting the mixture with hydrophilic material to remove at least some of the water therefrom and produce a drier mixture; and thereafter b) contacting the drier mixture with an agent for removing hydrocarbons, to produce a purified mixture.
Claim 2
Dependent Claim
52 words
A method of claim 1 wherein the hydrophilic material is at least one selected from molecular sieve wherein the pores defined by the crystalline structure of said molecular sieve are large enough for adsorption of water molecules, high surface area aluminas, precursors for high surface area aluminas, and high surface area silicas.
Claim 3
Dependent Claim
29 words
A method of claim 2 wherein the molecular sieves have a pore size greater than about 2 angstroms in diameter, preferably about 2 to about 5 angstroms in diameter.
Claim 4
Dependent Claim
48 words
A method of claim 2 wherein said molecular sieve is at least one kind selected from Type A zeolite, Type L zeolite, Type X zeolite, chabazite, erionite, clinoptilolite, ferrierite, phillipsite, mazzite, offretite, aluminophosphates, and silicoaluminophospates, or NaA zeolite, CaA zeolite, KA zeolite, LiA zeolite, NaX zeolite, K-erionite, phillipsite.
Claim 5
Dependent Claim
35 words
A method of claim 2 wherein the surface are of said aluminas and said silicas is selected from the group comprising an area of at least about 200 m²/g, or at least about 300 m²/g.
Claim 6
Independent Claim
18 words
A method of any one of claims 1-5 wherein the hydrophilic material is silica gel or gamma alumina.
Claim 7
Independent Claim
18 words
A method of any one of claims 1-6 wherein the hydrocarbon-removing agent comprises at least one molecular sieve.
Claim 8
Dependent Claim
51 words
A method of claim 7 wherein said molecular sieve is selected from the group consisting of zeolite, carbon molecular sieve, metallophospates, aluminophosphates, silicoaluminophosphates, of pentasil type zeolite, faujastie type zeolite, mordenite zeolite, beta zeolite, or ultra stable Y zeolite, ZSM type zeolite, or combinations of any of the foregoing group members.
Claim 9
Independent Claim
14 words
A method of any one of the foregoing claims wherein the hydrocarbons are low.
Claim 10
Independent Claim
63 words
A system for removing hydrocarbons from an exhaust gas mixture which comprises water and hydrocarbons, the system comprising: a) a first stage comprising hydrophilic material for removing at least one of the water from the mixture to produce a drier gas mixture; and b) a second stage comprising a hydrocarbon-removing agent for removing hydrocarbons from the drier mixture, to produce a purified mixture.
Claim 11
Dependent Claim
31 words
A system of claim 10 further comprising a third stage which comprises hydrophilic material for removing excess water from the system, the third stage being positioned downstream of the hydrocarbon-removing agent.
Claim 12
Dependent Claim
28 words
A system of claim 10 or 11 further comprising a catalyst for removing NO x , CO, and hydrocarbons, said catalyst being positioned downstream of the hydrocarbon-removing agent.
References Cited (Backward Citations)
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