Pollutant emission control sorbents and methods of manufacture
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-020/02
B01J-020/06
B01J-020/16
B01J-020/10
B01D-053/64
출원번호
UP-0290631
(2005-11-30)
등록번호
US-7704920
(2010-05-20)
발명자
/ 주소
Yang, Xiaolin David
Tran, Pascaline Harrison
Shore, Lawrence
Speronello, Barry Keven
Mentz, Ronald Thomas
출원인 / 주소
BASF Catalysts LLC
대리인 / 주소
Servilla, Scott S.
인용정보
피인용 횟수 :
10인용 특허 :
33
초록▼
Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. The methods include mixing sorbent substrate particles with a sulfide salt and a metal salt to form a metal sulfid
Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. The methods include mixing sorbent substrate particles with a sulfide salt and a metal salt to form a metal sulfide on the outer surface of the sorbent particles.
대표청구항▼
What is claimed is: 1. A method of making sorbent particles for the removal of mercury and other pollutants from a gaseous stream comprising: mixing a solid metal salt with sorbent substrate particles having an outer surface; mixing a sulfide salt with the sorbent substrate particles by grinding, m
What is claimed is: 1. A method of making sorbent particles for the removal of mercury and other pollutants from a gaseous stream comprising: mixing a solid metal salt with sorbent substrate particles having an outer surface; mixing a sulfide salt with the sorbent substrate particles by grinding, milling or incipient wetness to form a metal sulfide on the outer surface of the particles; and drying the particles having a metal sulfide on the outer surface. 2. The method of claim 1, wherein the substrate particles are selected from the group consisting of alumina, silica, titania, zirconia, iron oxides, zinc oxide, rare earth oxides, metal carbonate, metal sulfate, aluminosilicates, zeolites, activated carbon, kaolin, metakaolin, fully calcined kaolin, talc, coal particles, dirt, and combinations thereof. 3. The method of claim 1, wherein no waste salts or solutions are generated from the method. 4. The method of claim 1, wherein the metal salts are salts selected from the group consisting of alkaline, alkaline earth metals and metals having an atomic number between 21 and 30, between 38 and 50 and between 56 and 79, and combinations thereof. 5. The method of claim 4, wherein the metal salt includes a metal selected from the group consisting of copper, titanium, tin, iron, manganese and combinations thereof. 6. The method of claim 4, wherein the metal salt is selected from the group consisting of nitrate, chloride, sulfate and acetate salts, and combinations thereof. 7. The method of claim 4, wherein the loading level of the metal salt is between about 1 and 20 weight percent. 8. The method of claim 1, wherein the sulfide salt is a sulfide precursor that forms the S−2 anion. 9. The method of claim 8, wherein the sulfide salt is selected from the group consisting of Na2S and (NH4)2S. 10. The method of claim 4, wherein the metal salt is a chloride or a mixture of chloride and another salt. 11. The method of claim 1, further comprising reducing the sorbent particle size to an average particle size of less than about 80 μm. 12. The method of claim 1, wherein the drying occurs at a temperature of between about 90° and 140° C. 13. The method of claim 1, wherein the metal sulfide is selected from the group consisting of copper sulfides, tin sulfides, manganese sulfides, titanium sulfides, iron sulfides and combinations thereof. 14. The method of claim 1, wherein the method does not utilize ion exchange to form the metal sulfide on the surface of the particles. 15. A sorbent made by the method of claim 1, the sorbent being effective to remove mercury from a flue gas stream. 16. A method of removing mercury and other pollutants from a flue gas stream comprising injecting a sorbent made by the method of claim 1 into a coal-fired boiler flue gas stream. 17. A sorbent comprising substrate particles containing a metal sulfide formed on the outer surface of the substrate particles by grinding, milling or incipient wetness, the metal sulfide selected from the group consisting of copper sulfide, tin sulfide, manganese sulfide, titanium sulfide, iron sulfide and combinations thereof the sorbent being effective for removal of mercury and other pollutants from a gas stream. 18. The sorbent of claim 17, wherein the substrate particles are selected from the group consisting of alumina, silica, titania, zirconia, iron oxides, zinc oxide, rare earth oxides, metal carbonate, metal sulfate, aluminosilicates, zeolites, activated carbon, kaolin, metakaolin, fully calcined kaolin, montmorillonite, talc, coal particles, dirt, and combinations thereof. 19. The method of claim 1, wherein the metal salt is mixed with the substrate particles followed by mixing the sulfide salt with the substrate particles and the metal salt. 20. The method of claim 1, wherein the sulfide salt is mixed with the substrate particles followed by mixing the metal salt with the substrate particles and the sulfide salt.
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이 특허에 인용된 특허 (33)
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Matviya Thomas M. (Pittsburgh PA) Gebhard Robert S. (Pittsburgh PA) Greenbank Michael (Monaca PA), Mercury adsorbent carbon molecular sieves and process for removing mercury vapor from gas streams.
Durham Michael D. (Castle Rock CO) Hyatt David E. (Littleton CO) Stewart Robin M. (Arvada CO) Schlager Richard J. (Aurora CO), Mercury removal apparatus and method.
Chang, Ramsay; Rostam-Abadi, Massoud; Sjostrom, Sharon, Method for removal of vapor phase contaminants from a gas stream by in-situ activation of carbon-based sorbents.
Cameron Charles (Paris FRX) Courty Philippe (Houilles FRX) Boitiaux Jean-Paul (Poissy FRX) Varin Philipe (Massy FRX) Leger Grard (Ecully FRX), Method of eliminating mercury or arsenic from a fluid in the presence of a mercury and/or arsenic recovery mass.
Biermann Joseph Jan Peter,NLX ; Bleijerveld Robert,NLX ; Voogt Nicolaas,NLX ; Hulscher Hendrik Jacobus,NLX, Methods of manufacturing hydraulic materials.
Pennline, Henry W.; Granite, Evan J.; Freeman, Mark C.; Hargis, Richard A.; O'Dowd, William J., Thief process for the removal of mercury from flue gas.
Smyrniotis, Christopher R.; Schulz, Kent W.; Rivera, Emelito P.; Fang, Mingming; Saratovsky, Ian, Dry processes, apparatus compositions and systems for reducing mercury, sulfur oxides and HCl.
McCullough, Thomas P.; Meyer, Gary Joel; Roper, Jr., Ralph E.; Kriech, Anthony J., Use of ferrous sulfide suspension for the removal of mercury from flue gases.
McCullough, Thomas P.; Meyer, Gary Joel; Roper, Jr., Ralph E.; Kriech, Anthony J., Use of ferrous sulfide suspension for the removal of mercury from flue gases.
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