US4500327A — Process for removal of mercury vapor and adsorben…

Claim 1

Independent Claim 105 words

A process for the removal of mercury vapor from a gas containing the same, which comprises contacting the gas with an adsorbent comprising an activated carbon having as supported thereon ( 1) one or more components included in one of the three groups shown below and (2) one or more components included in the remaining two groups shown below: ______________________________________ Group Component ______________________________________ I sulfur II sulfate and nitrate of Al, V, Fe, Co, Ni, Cu, Zn or NH.sub.4 III oxide of iodine, oxyacid correspond- ing to the oxide of iodine, salt of said oxyacid, and bromide and iodide of K, Na or NH.sub.4 ______________________________________

Claim 2

Dependent Claim 105 words

A process for the removal of mercury vapor from a gas containing the same, which comprises contacting the gas with an adsorbent comprising an activated carbon having as supported thereon ( 1) one or more components included in one of the three groups shown below and (2) one or more components included in the remaining two groups shown below: ______________________________________ Group Component ______________________________________ I sulfur II sulfate and nitrate of Al, V, Fe, Co, Ni, Cu, Zn or NH.sub.4 III oxide of iodine, oxyacid correspond- ing to the oxide of iodine, salt of said oxyacid, and bromide and iodide of K, Na or NH.sub.4 ______________________________________

Claim 3

Dependent Claim 47 words

A process as claimed in claim 1, wherein the one or more components included in one of the three groups is sulfur included in Group I, and the one or more components included in the remaining two groups are one or more components included in Group II.

Claim 4

Dependent Claim 47 words

A process as claimed in claim 1, wherein the one or more components included in one of the three groups is sulfur included in Group I, and the one or more components included in the remaining two groups are one or more components included in Group III.

Claim 5

Dependent Claim 46 words

A process as claimed in claim 1, wherein the one or more components included in the remaining two groups are one or more components included in one of the remaining two groups and one or more components included in the other of the remaining two groups.

Claim 6

Dependent Claim 96 words

A process as claimed in claim 1, wherein each of the components is supported on the activated carbon so that the amount of sulfur, when used, is in the range of from 10 to 800 mg per g of activated carbon, the total amount of the components included in Group II, when used, is in the range of from 5 to 500 mg per g of activated carbon, and the total amount of the components included in Group III, when used, is in the range of from 1 to 500 mg per g of activated carbon.

Claim 7

Dependent Claim 21 words

A process as claimed in claim 1, wherein the activated carbon is one having as supported thereon sulfur and potassium iodide.

Claim 8

Dependent Claim 21 words

A process as claimed in claim 1, wherein the activated carbon is one having as supported thereon sulfur and ferrous sulfate.

Claim 9

Dependent Claim 23 words

A process as claimed in claim 1, wherein the activated carbon is one having as supported thereon sulfur, potassium idoide and ferrous sulfate.

Claim 10

Dependent Claim 91 words

An adsorbent for the removal of mercury vapor, which comprises an activated carbon having as supported thereon (1) one or more components included in one of the three groups shown below and (2) one or more components included in the remaining two groups shown below: ______________________________________ Group Component ______________________________________ I sulfur II sulfate and nitrate of Al, V, Fe, Co, Ni, Cu, Zn or NH.sub.4 III oxide of iodine, oxyacid correspond- ing to the oxide of iodine, salt of said oxyacid, and bromide and iodide of K, Na or NH.sub.4 ______________________________________

Claim 11

Dependent Claim 91 words

An adsorbent for the removal of mercury vapor, which comprises an activated carbon having as supported thereon (1) one or more components included in one of the three groups shown below and (2) one or more components included in the remaining two groups shown below: ______________________________________ Group Component ______________________________________ I sulfur II sulfate and nitrate of Al, V, Fe, Co, Ni, Cu, Zn or NH.sub.4 III oxide of iodine, oxyacid correspond- ing to the oxide of iodine, salt of said oxyacid, and bromide and iodide of K, Na or NH.sub.4 ______________________________________

Claim 12

Dependent Claim 47 words

An adsorbent as claimed in claim 9, wherein the one or more components included in one of the three groups is sulfur included in Group I, and the one or more components included in the remaining two groups are one or more components included in Group II.

Claim 13

Dependent Claim 47 words

An adsorbent as claimed in claim 9, wherein the one or more components included in one of the three groups is sulfur included in Group I, and the one or more components included in the remaining two groups are one or more components included in Group III.

Claim 14

Dependent Claim 46 words

An adsorbent as claimed in claim 9, wherein the one or more components included in the remaining two groups are one or more components included in one of the remaining two groups and one or more components included in the other of the remaining two groups.

Claim 15

Dependent Claim 96 words

An adsorbent as claimed in claim 9, wherein each of the components is supported on the activated carbon so that the amount of sulfur, when used, is in the range of from 10 to 800 mg per g of activated carbon, the total amount of the components included in Group II, when used, is in the range of from 5 to 500 mg per g of activated carbon, and the total amount of the components included in Group III, when used, is in the range of from 1 to 500 mg per g of activated carbon.

Claim 16

Dependent Claim 21 words

An adsorbent as claimed in claim 9, wherein the activated carbon is one having as supported thereon sulfur and potassium iodide.

Claim 17

Dependent Claim 21 words

An adsorbent as claimed in claim 9, wherein the activated carbon is one having as supported thereon sulfur and ferrous sulfate.

Claim 18

Dependent Claim 23 words

An adsorbent as claimed in claim 9, wherein the activated carbon is one having as supported thereon sulfur, potassium iodide and ferrous sulfate.

Claim 19

Dependent Claim 37 words

A process for producing an activated carbon having sulfur as supported thereon, which comprises mixing activated carbon with finely powdered sulfur and heating the resultant mixture at 110° to 350° C. for not less than 30 minutes.

Claim 20

Dependent Claim 37 words

A process for producing an activated carbon having sulfur as supported thereon, which comprises mixing activated carbon with finely powdered sulfur and heating the resultant mixture at 110° to 350° C. for not less than 30 minutes.

Claim 21

Dependent Claim 18 words

A process as claimed in claim 17, wherein the resultant mixture is heated at 110° to 300° C.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1988-02-19	1988-08-20	1989-02-19	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1992-02-19	1992-08-20	1993-02-19	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1996-02-19	1996-08-20	1997-02-19	$7700.00	Window Closed / Lapsed

Process for removal of mercury vapor and adsorbent therefor

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