[특허]Layered double hydroxide sorbents for the removal of SOx <B>from flue gas and other gas streams

Layered double hydroxide sorbents for the removal of SOx from flue gas and other gas streams 원문보기

IPC분류정보

국가/구분 United States(US) Patent 등록

국제특허분류(IPC7판)

B01J-020/04

B01J-020/06

B01J-020/08

출원번호 US-0589424 (1990-09-28)

발명자 / 주소

Pinnavaia Thomas J. (East Lansing MI) Amarasekera Jayantha (East Lansing MI) Polansky Christine A. (Ithaca MI)

출원인 / 주소

Board of Trustees operating Michigan State University (East Lansing MI 02)

인용정보 피인용 횟수 : 59 인용 특허 : 0

초록 ▼

Processes for removing noxious sulfur oxides from gas streams, particularly from flue gases of coal-burning power plants, using heated layered double hydroxide (LDH) sorbents are described. The sorbent compositions contain metal components, incorporated into the sorbents either by isomorphous replac

Processes for removing noxious sulfur oxides from gas streams, particularly from flue gases of coal-burning power plants, using heated layered double hydroxide (LDH) sorbents are described. The sorbent compositions contain metal components, incorporated into the sorbents either by isomorphous replacement of all or part of MII and/or MIII ions in layers of LDH structures or by impregnation as a metal salt, to promote the oxidation of sulfur dioxide.

대표청구항 ▼

A sorbent composition useful for removing sulfur oxides from flue gas and other gas streams which comprises contacting said gas streams with a heated sorbent composition wherein the said sorbent before being heated has a layered double hydroxide structure of the formula: [M1-xIIMxIII(OH)2](An-)x/n.p

A sorbent composition useful for removing sulfur oxides from flue gas and other gas streams which comprises contacting said gas streams with a heated sorbent composition wherein the said sorbent before being heated has a layered double hydroxide structure of the formula: [M1-xIIMxIII(OH)2](An-)x/n.pH2O wherein MII is a divalent metal cation and MIII is a trivalent metal cation, A is an interlayer anion of charge n-which forms a volatile gas at elevated temperatures, x is between 0.8 and 0.12, and contains an additional transition metal cation which is impregnated as a salt in admixture with the said sorbent composition and p is a number representing moles of water, wherein said additional metal cation which is impregnated as a salt into the sorbent composition is selected from the group consisting of metal cations which provide oxidation of sulfur dioxide to sulfur trioxide in an amount sufficient that said layered double hydroxide structure promotes the oxidation of the sulfur dioxide to the sulfur trioxide at sulfur dioxide oxidation conditions.

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국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01J-020/04 B01J-020/06 B01J-020/08
출원번호	US-0589424 (1990-09-28)
발명자 / 주소	Pinnavaia Thomas J. (East Lansing MI) Amarasekera Jayantha (East Lansing MI) Polansky Christine A. (Ithaca MI)
출원인 / 주소	Board of Trustees operating Michigan State University (East Lansing MI 02)
인용정보	피인용 횟수 : 59 인용 특허 : 0

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Layered double hydroxide sorbents for the removal of SOx from flue gas and other gas streams 원문보기

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