EP0125644A2
Expired / Lapsed
EP
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Inorganic oxide sorbents
Assignee: WR Grace and Co
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Filing: 1984-05-10
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Granted: —
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Expires: 2004-05-10
Abstract
Abstract Alkali metal and alkaline earth metal containing spinel- alumina sorbents are used to remove sulfur oxides (SOx components) from gas streams.
Inventors
- 👤 Roger Jean Lussier
- 👤 William Alan Welsh
- 👤 James Michael Maselli
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 07:45
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/04; B01J20/041; B01J20/10; B01J20/16; B01J20/18; B01J20/28; B01J20/28002; B01J20/28004; B01J20/28054; B01J20/28057; B01J20/28061; B01J20/28069; B01J20/30; B01J20/3007; B01J20/3078; B01J20/32; B01J20/3202; B01J20/3204; B01J20/3231; B01J20/3234; B01J20/3236
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
10 words
A composition comprising an alkali and/or alkaline earth-metal spinel-alumina composite.
Claim 2
Dependent Claim
10 words
A composition comprising an alkali and/or alkaline earth-metal spinel-alumina composite.
Claim 3
Dependent Claim
40 words
The composition of claim 1 wherein said composite contains alkali and/or alkaline earth-metals selected from the group consisting of sodium, potassium, magnesium, calcium, and mixtures thereof in amounts ranging up to about 15 percent by weight measured as the oxide.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein the alkali and/or alkaline earth metal is precipitated, exchanged or impregnated into said composite.
Claim 5
Dependent Claim
20 words
The composition of claim 1 which contains from about 5 to 25 percent by weight A1 2 0 3 binder.
Claim 6
Dependent Claim
24 words
The composition of claim 1 wherein said spinel has the formula 2.0 to 0.40 Al 2 L 3 .SiO 2 expressed as mole ratios.
Claim 7
Dependent Claim
35 words
A sorbent comprising the composition of claim 1 having a surface area in the range of from about 100 to 300m 2 /g and a total pore volume of from about 0.30 to 0.60 cc/g.
Claim 8
Dependent Claim
16 words
The sorbent of claim 6 having a particle size ranging from about 20 to 200 microns.
Claim 9
Dependent Claim
16 words
The sorbent composition of claim 6 having a particle size of from 0.2 to 4 mm.
Claim 10
Dependent Claim
22 words
A catalyst composition comprising a zeolite containing cracking catalyst and up to 50 percent by weight of the sorbent of claim 7.
Claim 11
Dependent Claim
23 words
A method for removing the SO components from a gas stream which comprises contacting said gas stream with the sorbent of claim 6.
Claim 12
Independent Claim
85 words
A method for preparing a sorbent composition which comprises: (a) Mixing kaolin with acid alumina-sol solution to obtain a formable mixture; (b) Forming said mixture into particles; (c) Calcining said particles at a temperature of from about 1700 to 2200°F; (d) Reacting the calcined particles with an alkali metal hydroxide solution and washing to remove amorphous silica; and (e) Combining the particles obtained in step (d) with components selected from the group consisting of alkali and alkaline earth-metal ion containing aqueous solutions and mixtures thereof.
Claim 13
Independent Claim
85 words
A method for preparing a sorbent composition which comprises: (a) Mixing kaolin with acid alumina-sol solution to obtain a formable mixture; (b) Forming said mixture into particles; (c) Calcining said particles at a temperature of from about 1700 to 2200°F; (d) Reacting the calcined particles with an alkali metal hydroxide solution and washing to remove amorphous silica; and (e) Combining the particles obtained in step (d) with components selected from the group consisting of alkali and alkaline earth-metal ion containing aqueous solutions and mixtures thereof.
Claim 14
Dependent Claim
11 words
The method of claim 11 wherein the mixture is spray dried.
Claim 15
Dependent Claim
18 words
The method of claim 11 wherein the particles obtained in step (d) are ion exchanged at step (e).
References Cited (Backward Citations)
No citation records indexed.
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