IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0869046
(2010-08-26)
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등록번호 |
US-8650915
(2014-02-18)
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발명자
/ 주소 |
- Borders, Harley Allen
- Nijakowski, Michael R
- Thome, William J
- McKenzie, Raymond L
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
69 |
초록
▼
Inorganic fiber production processes and systems are disclosed. One process includes providing a molten inorganic fiberizable material, forming substantially vertical primary fibers from the molten material, and attenuating the primary fibers using an oxy-fuel fiberization burner. Other processes in
Inorganic fiber production processes and systems are disclosed. One process includes providing a molten inorganic fiberizable material, forming substantially vertical primary fibers from the molten material, and attenuating the primary fibers using an oxy-fuel fiberization burner. Other processes include forming a composition comprising combustion gases, aspirated air and inorganic fibers, and preheating a fuel stream and/or an oxidant stream prior to combustion in a fiberization burner using heat developed during the process. Flame temperature of fiberization burners may be controlled by monitoring various burner parameters. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
대표청구항
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1. A system comprising: (a) an assembly comprising a molten inorganic fiberizable material container, and a bushing for forming substantially vertical primary fibers from the molten material; and(b) an oxy-fuel burner adapted to produce a flame and attenuate the substantially vertical primary fibers
1. A system comprising: (a) an assembly comprising a molten inorganic fiberizable material container, and a bushing for forming substantially vertical primary fibers from the molten material; and(b) an oxy-fuel burner adapted to produce a flame and attenuate the substantially vertical primary fibers, the oxy-fuel burner comprising a refractory burner block adapted to be in fluid connection with sources of primary oxidant and fuel, the refractory burner block having a fuel and primary oxidant entrance end and a flame exit end, the flame exit end having a substantially rectangular flame exit having a width greater than its height, the refractory burner block defining an internal combustion chamber and a slot through the burner block fluidly connecting the internal combustion chamber and the flame exit end, the slot having a height and width substantially the same as the flame exit, the combustion chamber height substantially greater than the height of the slot, and an oxygen manifold fluidly connected to the combustion chamber and adapted to route a gas with an oxygen molar concentration of at least 50% to the internal combustion chamber, the oxygen manifold comprising an upper manifold and a lower manifold each having a plurality of holes therein for accepting first ends of a corresponding plurality of tubes, each one of the tubes extending through a corresponding one of a plurality of non-horizontal passages through the refractory burner block, the non-horizontal passages extending trough the refractory burner block at positions intermediate the fuel and primary oxidant entrance end and the flame exit end. 2. The system of claim 1 comprising a compressor for compressing an oxidant. 3. The system of claim 1 comprising a heat exchanger for preheating the fuel and/or the primary oxidant and/or the gas with an oxygen molar concentration of at least 50% prior to combustion of the fuel in the burner using heat developed during attenuating the fibers, wherein the heat exchanger is a gas to gas heat exchanger adapted to exchange heat between a gaseous portion of a composition comprising hot combustion gases, aspirated air, and attenuated fibers and streams selected from the fuel, the primary oxidant, the gas with an oxygen molar concentration of at least 50%, and a mixture of the primary oxidant and the gas with an oxygen molar concentration of at least 50%. 4. The system of claim 1 comprising a combustion controller which receives input parameters selected from flame temperature, velocity of the fuel, velocity of the primary oxidant or the gas with an oxygen molar concentration of at least 50%, mass flow rate of the fuel, mass flow rate of the primary oxidant or the gas with an oxygen molar concentration of at least 50%, energy content of the fuel, temperature of the fuel as it enters the burner, temperature of the primary oxidant or the gas with an oxygen molar concentration of at least 50% as it enters the burner, pressure of the primary oxidant or the gas with an oxygen molar concentration of at least 50% entering the burner, humidity of the primary oxidant or the gas with an oxygen molar concentration of at least 50%, burner geometry, oxidation ratio, and combinations thereof, and employs a control algorithm to control flame temperature based on one or more of these input parameters. 5. A system comprising: (a) an assembly comprising a molten inorganic fiberizable material container, and a bushing for forming substantially vertical primary fibers from the molten material;(b) an oxy-fuel burner adapted to produce a flame by combusting a fuel with a primary oxidant and a separate secondary oxidant stream injected into a combustion chamber of the burner, the flame attenuating the substantially vertical primary fibers, the oxy-fuel burner comprising a refractory burner block adapted to be in fluid connection with sources of primary oxidant and fuel, the refractory burner block having a fuel and primary oxidant entrance end and a flame exit end, the flame exit end having a substantially rectangular flame exit having a width greater than its height, the refractory burner block defining an internal combustion chamber and a slot through the burner block fluidly connecting the internal combustion chamber and the flame exit end, the slot having a height and width substantially the same as the flame exit, the combustion chamber height substantially greater than the height of the slot, and an oxygen manifold fluidly connected to the combustion chamber and adapted to route the secondary oxidant stream comprising a gas with an oxygen molar concentration of at least 50% to the internal combustion chamber, the oxygen manifold comprising an upper manifold and a lower manifold each having a plurality of holes therein for accepting first ends of a corresponding plurality of tubes, each one of the tubes extending through a corresponding one of a plurality of non-horizontal passages through the refractory burner block, the non-horizontal passages extending through the refractory burner block at positions intermediate the fuel and primary oxidant entrance end and the flame exit end; and(c) a heat exchanger for preheating one or more of the primary oxidant, the secondary oxidant, or the fuel, prior to entering the burner using heat developed during attenuating the fibers, wherein the heat exchanger is adapted to exchange heat between a composition comprising hot combustion gases, aspirated air, and attenuated fibers and streams selected from the fuel, the primary oxidant, and the secondary oxidant. 6. The system of claim 5 comprising a combustion controller which receives input parameters selected from flame temperature, velocity of fuel, velocity of the primary oxidant or the secondary oxidant, mass flow rate of the fuel, mass flow rate of the primary oxidant or the secondary oxidant, energy content of the fuel, temperature of the fuel as it enters the burner, temperature of the primary oxidant or the secondary oxidant as it enters the burner, pressure of the primary oxidant or the secondary oxidant entering the burner, humidity of the primary oxidant or the secondary oxidant, burner geometry, oxidation ratio, and combinations thereof, and employs a control algorithm to control flame temperature based on one or more of these input parameters. 7. A system comprising: (a) an assembly comprising a molten inorganic fiberizable material container, and a bushing for forming substantially vertical primary fibers from the molten material; and(b) an oxy-fuel burner adapted to produce a flame and attenuate the substantially vertical primary fibers, the oxy-fuel burner comprising:an air-fuel mix manifold;a refractory burner block adapted to be in fluid connection with sources of primary oxidant, a gas with an oxygen molar concentration of at least 50%, and fuel, the refractory burner block having an air-fuel mixture entrance end fluidly connected to the air-fuel mix manifold, and a flame exit end, the flame exit end having a substantially rectangular flame exit having a width greater than its height, the refractory burner block defining a combustion chamber and a second chamber fluidly connecting the combustion chamber and the flame exit end; andan injector positioned between the air-fuel mix manifold and the refractory burner block, the injector comprising substantially concentric inner and outer members defining a cooling volume there between, the inner member defining a passage fluidly connecting the air-fuel mix manifold and the combustion chamber of the refractory burner block, the injector comprising one or more manifolds extending through the outer member and forming a portion of the inner member, first portions of the manifolds exposed to the passage and second portions of the manifolds exposed to the cooling volume, the one or more manifolds fluidly connecting a source selected from a source of a gas with an oxygen molar concentration of at least 50% and a source of fuel with the passage; andone or more inlet conduits fluidly connected to the injector for supplying the coolant to the cooling volume to cool the manifolds during combustion and one or more outlet conduits fluidly connected to the injector for collecting a warmed coolant from the cooling volume. 8. The system of claim 7 comprising a heat exchanger for preheating the fuel and/or the primary oxidant and/or the oxygen prior to combustion of the fuel in the burner using heat developed during attenuating the fibers, wherein the heat exchanger is a gas to gas heat exchanger adapted to exchange heat between a gaseous portion of a composition comprising hot combustion gases, aspirated air, and attenuated fibers and streams selected from the fuel, the primary oxidant, the gas with an oxygen molar concentration of at least 50%, and a mixture of the primary oxidant and the gas with an oxygen molar concentration of at least 50%. 9. The system of claim 7 comprising a combustion controller which receives input parameters selected from flame temperature, velocity of the fuel, velocity of the primary oxidant or the gas with an oxygen molar concentration of at least 50%, mass flow rate of the fuel, mass flow rate of the primary oxidant or the gas with an oxygen molar concentration of at least 50%, energy content of the fuel, temperature of the fuel as it enters the burner, temperature of the primary oxidant or the gas with an oxygen molar concentration of at least 50% as it enters the burner, pressure of the primary oxidant or the gas with an oxygen molar concentration of at least 50% entering the burner, humidity of the primary oxidant or the gas with an oxygen molar concentration of at least 50%, burner geometry, oxidation ratio, and combinations thereof, and employs a control algorithm to control flame temperature based on one or more of these input parameters. 10. A system comprising: (a) an assembly comprising a molten inorganic fiberizable material container, and a bushing for forming substantially vertical primary fibers from the molten material; and(b) an oxy-fuel burner adapted to produce a flame and attenuate the substantially vertical primary fibers, the oxy-fuel burner comprising:a plurality of oxygen conduits in a first horizontal plane having inlet ends and outlet ends, the inlet ends fluidly connected to a source of a gas with an oxygen molar concentration of at least 50%, and the outlet ends fluidly connected to an entrance to a refractory slot;a plurality of fuel conduits in a second horizontal plane, the second horizontal plane substantially parallel to the first horizontal plane, the plurality of fuel conduits having inlet ends and outlet ends, the inlet ends fluidly connected to a source of fuel, and the outlet ends fluidly connected to the entrance to the refractory slot;wherein the refractory slot defines a recess wherein the outlet ends of the oxygen conduits and the outlet ends of the fuel conduits are recessed from an exit of the refractory slot, and the plurality of oxygen conduits and the plurality of fuel conduits are adapted to disperse the fuel and the gas with an oxygen molar concentration of at least 50% uniformly and begin combusting the fuel in the refractory slot, the refractory slot adapted to direct a flame toward primary fibers to be fiberized. 11. The system of claim 10 comprising a heat exchanger for preheating the fuel and/or the gas with an oxygen molar concentration of at least 50% prior to combustion of the fuel in the burner using heat developed during attenuating the fibers, wherein the heat exchanger is a gas to gas heat exchanger adapted to exchange heat between a gaseous portion of a composition comprising hot combustion gases, aspirated air, and attenuated fibers and streams selected from the fuel, and the gas with an oxygen molar concentration of at least 50%. 12. The system of claim 10 comprising a combustion controller which receives input parameters selected from flame temperature, velocity of the fuel, velocity of gas with an oxygen molar concentration of at least 50%, mass flow rate of the fuel, mass flow rate of the gas with an oxygen molar concentration of at least 50%, energy content of the fuel, temperature of the fuel as it enters the burner, temperature of the gas with an oxygen molar concentration of at least 50% as it enters the burner, gas with an oxygen molar concentration of at least 50% entering the burner, humidity of the gas with an oxygen molar concentration of at least 50%, burner geometry, oxidation ratio, and combinations thereof, and employs a control algorithm to control flame temperature based on one or more of these input parameters.
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