Process and apparatus for making a mineral melt
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03B-003/02
C03B-005/12
C03B-005/235
출원번호
US-0522485
(2008-01-14)
등록번호
US-9688561
(2017-06-27)
우선권정보
EP-07250137 (2007-01-15)
국제출원번호
PCT/EP2008/000215
(2008-01-14)
§371/§102 date
20091013
(20091013)
국제공개번호
WO2008/086990
(2008-07-24)
발명자
/ 주소
Hansen, Lars Elmekilde
Boellund, Lars
Hansen, Lars Kresten
Hansen, Peter Farkas Binderup
Jensen, Leif Moeller
출원인 / 주소
ROCKWOOL INTERNATIONAL A/S
대리인 / 주소
McAndrews, Held & Malloy, Ltd.
인용정보
피인용 횟수 :
0인용 특허 :
14
초록▼
The invention relates to a method of making a mineral melt comprising providing a circulating combustion chamber (1) which comprises an upper zone (2), a lower zone (3) and a base zone (4), injecting particulate fuel, particulate mineral material and primary combustion gas which has optionally an ox
The invention relates to a method of making a mineral melt comprising providing a circulating combustion chamber (1) which comprises an upper zone (2), a lower zone (3) and a base zone (4), injecting particulate fuel, particulate mineral material and primary combustion gas which has optionally an oxygen level of at least 25% by volume into the upper zone of the circulating combustion chamber so that the fuel undergoes pyrolysis in the upper zone to produce char, thereby melting the particulate mineral materials to form a mineral melt and generating exhaust gases, injecting secondary combustion gas which has optionally an Oxygen level of at least 25% by volume into the lower zone of the circulating combustion chamber so that the char combusts, thereby completing combustion of the fuel, and separating the mineral melt from the hot exhaust gases so that the hot exhaust gases pass though an outlet in the circulating combustion chamber and the mineral melt collects in the base zone. The melt is optionally fiberized. The invention also relates to apparatus suitable for use in the method.
대표청구항▼
1. A method of making a mineral melt comprising providing a cyclone furnace which comprises an upper zone, a lower zone below the upper zone, a base zone below the lower zone, an exhaust gas outlet in the upper zone, and a mineral melt outlet in the base zone,injecting particulate fuel, particulate
1. A method of making a mineral melt comprising providing a cyclone furnace which comprises an upper zone, a lower zone below the upper zone, a base zone below the lower zone, an exhaust gas outlet in the upper zone, and a mineral melt outlet in the base zone,injecting particulate fuel, particulate mineral material, and primary combustion gas which has an oxygen level of at least 25% by volume into the upper zone of the cyclone furnace so that particulate fuel undergoes pyrolysis in the upper zone to produce char, the particulate mineral material melts in the upper zone to form a mineral melt, the mineral melt collects in the base zone as a melt pool, and hot exhaust gases are formed in the upper zone,injecting secondary combustion gas which has an oxygen level of at least 25% by volume into the lower zone of the cyclone furnace such that char combusts in the lower zone and hot exhaust gases are formed in the lower zone, andseparating the hot exhaust gases formed in the upper zone and the lower zone from the mineral melt so that hot exhaust gases pass through the exhaust gas outlet in the cyclone furnace. 2. A method according to claim 1, additionally comprising the step of making mineral fibers from the mineral melt by flowing the mineral melt from the melt pool through an outlet in the base zone to a fiberizer and forming fibers. 3. A method according to claim 1 wherein the lower zone of the cyclone furnace comprises plural lower zone inlets for the secondary combustion gas and the secondary combustion gas is injected into the lower zone through at least two lower zone inlets. 4. A method according to claim 1 wherein the secondary combustion gas is pure oxygen, the method further comprising adding liquid or gaseous fuel into the lower zone so as to form a flame in the lower zone. 5. A method of making mineral fibers comprising providing a cyclone furnace which comprises an upper zone, a lower zone below the upper zone and a base zone below the lower zone, an exhaust gas outlet in the upper zone, and a mineral melt outlet in the base zone,injecting particulate fuel, particulate mineral material and primary combustion gas into the upper zone of the cyclone furnace so that particulate fuel undergoes pyrolysis in the upper zone to produce char, the particulate mineral material melts in the upper zone to form a mineral melt, the mineral melt collects in the base zone as a melt pool, and exhaust gases are formed in the upper zone,injecting secondary combustion gas into the lower zone of the cyclone furnace such that char combusts in the lower zone and hot exhaust gases are formed in the lower zone,separating the hot exhaust gases formed in the upper zone and the lower zone from the mineral melt so that hot exhaust gases pass through the exhaust gas outlet in the cyclone furnace, andflowing the mineral melt from the melt pool through a mineral melt outlet in the base zone to a fiberizer and forming fibers. 6. A method according to claim 5 wherein at least one of the primary and the secondary combustion gas is oxygen-enriched air which contains at least 30% oxygen by volume. 7. A method according to claim 6 wherein the oxygen enriched air contains at least 35% oxygen by volume. 8. A method according to claim 6 wherein the oxygen enriched air contains at least 50% oxygen by volume. 9. A method according to claim 5 wherein the secondary combustion gas is injected into the lower zone through at least two inlets. 10. A method according to claim 5 wherein the secondary combustion gas is pure oxygen, the method further comprising adding liquid or gaseous fuel into the lower zone so as to form a flame in the lower zone. 11. A method according to claim 5 wherein the secondary combustion gas is injected into the lower zone through at least three inlets. 12. A method according to claim 5 wherein the primary combustion gas is oxygen-enriched air which contains at least 25% oxygen by volume. 13. A method according to claim 5 wherein the secondary combustion gas is oxygen-enriched air which contains at least 25% oxygen by volume. 14. A method according to claim 5 wherein at least one of the primary and the secondary combustion gas is oxygen-enriched air which contains at least 70% oxygen by volume. 15. A method according to claim 5 wherein at least one of the primary and the secondary combustion gas is pure oxygen. 16. A method according to claim 5 wherein the fiberizer is a spinning cup. 17. A method according to claim 5 wherein the fiberizer is a cascade spinner. 18. A method according to claim 5 wherein the particulate fuel is solid. 19. A method according to claim 5 wherein the particulate fuel is coal.
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이 특허에 인용된 특허 (14)
Hnat James G. (3774 Lewis Rd. Collegeville PA 19426), Apparatus for heat processing glass batch materials.
Cabrera Llanos,Roberto Marcos; Valadez Castillo,Rafael; Keer Rendon,Arturo, Method and system for feeding and burning a pulverized fuel in a glass melting furnace, and burner for use in the same.
LeBlanc John R. (Perrysburg OH) Dankert Thomas K. (Sylvania OH) Tuson Geoffrey B. (Yorktown Heights NY), Method of heating a charge, including injecting secondary oxidant into the output port.
Kunkle Gerald E. (New Kensington PA) Demarest Henry M. (Natrona Heights PA) Shelestak Larry J. (Bairdford PA), Method of melting raw materials for glass or the like using solid fuels or fuel-batch mixtures.
Demarest ; Jr. Henry M. (Natrona Heights PA) Kunkle Gerald E. (New Kensington PA) Moxie Clement C. (Natrona Heights PA), Method of melting raw materials for glass or the like with staged combustion and preheating.
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