US20160298041A1 - Fuel supply system for a gasification system - Google Patents
Fuel supply system for a gasification system Download PDFInfo
- Publication number
- US20160298041A1 US20160298041A1 US14/680,404 US201514680404A US2016298041A1 US 20160298041 A1 US20160298041 A1 US 20160298041A1 US 201514680404 A US201514680404 A US 201514680404A US 2016298041 A1 US2016298041 A1 US 2016298041A1
- Authority
- US
- United States
- Prior art keywords
- supply system
- fuel supply
- substance
- gasifier
- conveyance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/30—Fuel charging devices
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1693—Integration of gasification processes with another plant or parts within the plant with storage facilities for intermediate, feed and/or product
Definitions
- the subject matter disclosed herein relates to gasification systems and, more particularly, to a supply system for such gasification systems.
- a gasification process involves the partial combustion of substance (e.g., carbonaceous fuel, such as biomass or coal) inside of a gasification reactor to generate “producer gas.” This gas may then be used in a variety of applications.
- substance e.g., carbonaceous fuel, such as biomass or coal
- the carbonaceous fuel used for generation of the producer gas is routed to the gasification reactor from a supply.
- the fuel is typically in a solid state and therefore requires a medium to facilitate the flow of the fuel along a supply line to the gasification reactor.
- the gas used to facilitate the flow may be referred to as a conveyance gas (e.g., N2 and/or CO2).
- the conveyance gas Although beneficial for routing the solid fuel to the gasification system, it is not advantageous to route the conveyance gas to the gasification reactor. Doing so increases the required volume of the gasification reactor to accommodate the additional volume of gas being routed therein.
- the conveyance gas reduces the overall residence time of the reacting gas and fuel particles. Inclusion of the conveyance gas also increases the required size of equipment located downstream of the gasification reactor.
- the inert conveyance gas such as N2 acts as an impurity and is desirably separated from the producer gas, but is not cost effective and will affect overall plant thermal efficiency.
- a fuel supply system for a gasification system includes a gasifier.
- the fuel supply system also includes and a feed line for routing a substance and a conveyance fluid toward the gasifier.
- the supply system further includes a separation device located upstream of the gasifier and configured to receive the substance and the conveyance fluid from the feed line, the separation device separating the substance and the conveyance fluid, wherein only the substance is routed to the gasifier.
- a fuel supply system for a gasification system includes a gasifier.
- the fuel supply system also includes a storage structure containing carbonaceous fuel in a solid state.
- the fuel supply system further includes a pump operatively coupled to the storage structure and configured to pump the carbonaceous fuel.
- the fuel supply system yet further includes a pump manifold containing a conveyance gas for mixing with the carbonaceous fuel.
- the fuel supply system also includes a feed line for routing a mixture of the carbonaceous fuel and the conveyance gas toward the gasifier.
- the fuel supply system further includes a cyclone separator located immediately upstream of the gasifier and coupled to the gasifier with a feed injector, the cyclone separator configured to receive the carbonaceous fuel and the conveyance gas from the feed line, the cyclone separator separating the carbonaceous fuel and the conveyance gas, wherein only the carbonaceous fuel is routed to the gasifier.
- the FIGURE is a schematic illustration of a fuel supply system for a gasification system.
- a gasification system 10 is partially illustrated.
- a gasification system is configured to thermally convert a carbonaceous fuel into a more useful gaseous form of fuel (i.e., a fuel form that can be economically utilized with high energy recovery levels), referred to herein as “producer gas.”
- the gasification system 10 includes a gasifier 12 , within which the thermal conversion of the carbonaceous fuel is carried out.
- a supply system 14 is illustrated and is configured to store and route a substance to the gasifier 12 for reaction therein.
- the type of substance that is routed to the gasifier 12 by the supply system 14 may vary depending upon the particular application of use.
- the fuel substance is a carbonaceous fuel, such as coal in some embodiments, and will be referred to herein as such, however, it is to be appreciated that other carbonaceous fuels, such as biomass may be employed with the embodiments of the supply system 14 described herein.
- the substance is typically in a solid state, such as in a particulate form (e.g., powder).
- a substance storage structure 16 is provided to store the substance (e.g., carbonaceous fuel) in a ready state for routing to the gasifier 12 .
- the substance storage structure 16 may be a fully or partially enclosed container configured to store the substance.
- a pump 18 is operatively coupled to the storage structure 16 and initiates routing of the substance from the substance storage structure 16 toward the gasifier 12 .
- a pump manifold 20 is operatively coupled to the pump 18 and may be configured to be operatively coupled to one or more other pumps and substance storage structures.
- the pump manifold 20 contains a conveyance fluid therein.
- the conveyance fluid is a medium employed to facilitate routing of the substance to the gasifier 12 . This is beneficial due to the inertia of the solid state of the substance. While it is contemplated that the conveyance fluid is a liquid or two phase (i.e., liquid-gas) fluid, the conveyance fluid is typically a gas, such as nitrogen or carbon dioxide gas.
- the conveyance fluid may be stored in the pump manifold 20 at various pressures that may vary depending upon the particular application. In one example, the conveyance fluid is stored in the pump manifold 20 at a pressure of about 1000 psi.
- the substance and the conveyance fluid are mixed in the pump manifold 20 and routed along a feed line 22 toward the gasifier 12 .
- the separation device 24 is a cyclone separator that imparts a swirling of the mixture of substance and the conveyance fluid. The swirling is done a speed sufficient to force the solid particles (i.e., coal substance) toward and into contact with an inner wall 26 of the cyclone separator to cause the solid particles to fall toward a feed injector 28 of the gasifier 12 that facilitates a continuous flow of the solid particles into the gasifier 12 .
- the separation device 24 is located immediately upstream of the gasifier 12 . Regardless of the precise positioning of the separation device 24 , the gasifier 12 and the separation device 24 are operatively coupled in a manner that allows only the separated substance to enter the gasifier. In this manner, the gasifier remains free of the conveyance fluid that beneficially facilitates routing of the substance along the feed line 22 , while avoiding the undesirable effects of routing the conveyance fluid into the gasifier 12 .
- the cyclone separator described above as the separation device 24 is merely one example of a solid-gas separation device.
- Various alternative separation devices may be employed as the separation device 24 .
- a settling chamber, a baffle chamber, a louver, an impingement plate separator, a gravity spray wet scrubber, centrifugal separator, a packed scrubber, a jet scrubber, an expander separator (e.g., Venturi tube), a filtering separator, and an electrostatic precipitator are all separation devices that may be employed to facilitate the desired level of solid-gas separation of the substance and the conveyance gas.
- the preceding list of separation devices is merely illustrative and it is not intended to be limiting, as other separation devices may be suitable for effective separation.
- more than one separation device 24 may be employed to separate the substance and the conveyance gas.
- the devices may be arranged parallel to each other, in series with each other, or as an arrangement combining parallel and series.
- the separation device 24 routes the solid coal substance to the gasifier 12 and retains the conveyance fluid.
- the conveyance fluid is then routed out of the separation device 24 via an outlet line 30 that is operatively coupled to the separation device 24 .
- the outlet line 30 routes the conveyance fluid to a desired location.
- the separated conveyance fluid is recycled back to the pump manifold 20 for further routing of substance.
- the outlet line 30 routes a mixture of the substance and the conveyance fluid that has not been fully separated to a container or the like for further separation.
- the high pressure conveyance gas from outlet line 30 may be utilized for power generation through its expansion, thus increasing the overall thermal efficiency of the system.
- the separation device 24 separates the conveyance fluid from the solid substance just prior to feeding the solid substance to the gasifier 12 . Avoiding the presence of the conveyance gas in the gasifier 12 increases the overall residence time and therefore thermal conversion of the substance to producer gas. Additionally, the size of the gasifier 12 , as well as all downstream equipment, does not need to be increased to accommodate the conveyance fluid.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
A fuel supply system for a gasification system is provided. The fuel supply system includes a gasifier. The fuel supply system also includes and a feed line for routing a substance and a conveyance fluid toward the gasifier. The fuel supply system further includes a separation device located upstream of the gasifier and configured to receive the substance and the conveyance fluid from the feed line, the separation device separating the substance and the conveyance fluid, wherein only the substance is routed to the gasifier.
Description
- The subject matter disclosed herein relates to gasification systems and, more particularly, to a supply system for such gasification systems.
- A gasification process involves the partial combustion of substance (e.g., carbonaceous fuel, such as biomass or coal) inside of a gasification reactor to generate “producer gas.” This gas may then be used in a variety of applications. The carbonaceous fuel used for generation of the producer gas is routed to the gasification reactor from a supply. The fuel is typically in a solid state and therefore requires a medium to facilitate the flow of the fuel along a supply line to the gasification reactor. The gas used to facilitate the flow may be referred to as a conveyance gas (e.g., N2 and/or CO2).
- Although beneficial for routing the solid fuel to the gasification system, it is not advantageous to route the conveyance gas to the gasification reactor. Doing so increases the required volume of the gasification reactor to accommodate the additional volume of gas being routed therein. Alternatively, if the same size reactor is employed, the conveyance gas reduces the overall residence time of the reacting gas and fuel particles. Inclusion of the conveyance gas also increases the required size of equipment located downstream of the gasification reactor. Additionally for certain downstream chemical applications, the inert conveyance gas, such as N2, acts as an impurity and is desirably separated from the producer gas, but is not cost effective and will affect overall plant thermal efficiency.
- According to one aspect of the invention, a fuel supply system for a gasification system is provided. The fuel supply system includes a gasifier. The fuel supply system also includes and a feed line for routing a substance and a conveyance fluid toward the gasifier. The supply system further includes a separation device located upstream of the gasifier and configured to receive the substance and the conveyance fluid from the feed line, the separation device separating the substance and the conveyance fluid, wherein only the substance is routed to the gasifier.
- According to another aspect of the invention, a fuel supply system for a gasification system is provided. The fuel supply system includes a gasifier. The fuel supply system also includes a storage structure containing carbonaceous fuel in a solid state. The fuel supply system further includes a pump operatively coupled to the storage structure and configured to pump the carbonaceous fuel. The fuel supply system yet further includes a pump manifold containing a conveyance gas for mixing with the carbonaceous fuel. The fuel supply system also includes a feed line for routing a mixture of the carbonaceous fuel and the conveyance gas toward the gasifier. The fuel supply system further includes a cyclone separator located immediately upstream of the gasifier and coupled to the gasifier with a feed injector, the cyclone separator configured to receive the carbonaceous fuel and the conveyance gas from the feed line, the cyclone separator separating the carbonaceous fuel and the conveyance gas, wherein only the carbonaceous fuel is routed to the gasifier.
- These and other advantages and features will become more apparent from the following description taken in conjunction with the drawings.
- The subject matter, which is regarded as the invention, is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
- The FIGURE is a schematic illustration of a fuel supply system for a gasification system.
- The detailed description explains embodiments of the invention, together with advantages and features, by way of example with reference to the drawings.
- Referring to the Figure, a
gasification system 10 is partially illustrated. A gasification system is configured to thermally convert a carbonaceous fuel into a more useful gaseous form of fuel (i.e., a fuel form that can be economically utilized with high energy recovery levels), referred to herein as “producer gas.” Thegasification system 10 includes agasifier 12, within which the thermal conversion of the carbonaceous fuel is carried out. - A
supply system 14 is illustrated and is configured to store and route a substance to thegasifier 12 for reaction therein. The type of substance that is routed to thegasifier 12 by thesupply system 14 may vary depending upon the particular application of use. For example, the fuel substance is a carbonaceous fuel, such as coal in some embodiments, and will be referred to herein as such, however, it is to be appreciated that other carbonaceous fuels, such as biomass may be employed with the embodiments of thesupply system 14 described herein. Irrespective of the particular type of substance that is provided for gasification, the substance is typically in a solid state, such as in a particulate form (e.g., powder). - A
substance storage structure 16 is provided to store the substance (e.g., carbonaceous fuel) in a ready state for routing to thegasifier 12. Thesubstance storage structure 16 may be a fully or partially enclosed container configured to store the substance. Apump 18 is operatively coupled to thestorage structure 16 and initiates routing of the substance from thesubstance storage structure 16 toward thegasifier 12. - A
pump manifold 20 is operatively coupled to thepump 18 and may be configured to be operatively coupled to one or more other pumps and substance storage structures. Thepump manifold 20 contains a conveyance fluid therein. The conveyance fluid is a medium employed to facilitate routing of the substance to thegasifier 12. This is beneficial due to the inertia of the solid state of the substance. While it is contemplated that the conveyance fluid is a liquid or two phase (i.e., liquid-gas) fluid, the conveyance fluid is typically a gas, such as nitrogen or carbon dioxide gas. The conveyance fluid may be stored in thepump manifold 20 at various pressures that may vary depending upon the particular application. In one example, the conveyance fluid is stored in thepump manifold 20 at a pressure of about 1000 psi. The substance and the conveyance fluid are mixed in thepump manifold 20 and routed along afeed line 22 toward thegasifier 12. - Upstream of the
gasifier 12 is aseparation device 24 that is configured to receive the mixture of the substance and the conveyance fluid from thefeed line 22. The term “separation device” is used to generically define any assembly, device or system that separates a solid from a gas. In an exemplary embodiment, theseparation device 24 is a cyclone separator that imparts a swirling of the mixture of substance and the conveyance fluid. The swirling is done a speed sufficient to force the solid particles (i.e., coal substance) toward and into contact with aninner wall 26 of the cyclone separator to cause the solid particles to fall toward afeed injector 28 of thegasifier 12 that facilitates a continuous flow of the solid particles into thegasifier 12. In the illustrated embodiment, theseparation device 24 is located immediately upstream of thegasifier 12. Regardless of the precise positioning of theseparation device 24, thegasifier 12 and theseparation device 24 are operatively coupled in a manner that allows only the separated substance to enter the gasifier. In this manner, the gasifier remains free of the conveyance fluid that beneficially facilitates routing of the substance along thefeed line 22, while avoiding the undesirable effects of routing the conveyance fluid into thegasifier 12. - The cyclone separator described above as the
separation device 24 is merely one example of a solid-gas separation device. Various alternative separation devices may be employed as theseparation device 24. For example, a settling chamber, a baffle chamber, a louver, an impingement plate separator, a gravity spray wet scrubber, centrifugal separator, a packed scrubber, a jet scrubber, an expander separator (e.g., Venturi tube), a filtering separator, and an electrostatic precipitator are all separation devices that may be employed to facilitate the desired level of solid-gas separation of the substance and the conveyance gas. The preceding list of separation devices is merely illustrative and it is not intended to be limiting, as other separation devices may be suitable for effective separation. It is to be appreciated that more than oneseparation device 24 may be employed to separate the substance and the conveyance gas. In the case of a plurality of separation devices, the devices may be arranged parallel to each other, in series with each other, or as an arrangement combining parallel and series. - As described above, the
separation device 24 routes the solid coal substance to thegasifier 12 and retains the conveyance fluid. The conveyance fluid is then routed out of theseparation device 24 via anoutlet line 30 that is operatively coupled to theseparation device 24. Theoutlet line 30 routes the conveyance fluid to a desired location. In an exemplary embodiment, the separated conveyance fluid is recycled back to thepump manifold 20 for further routing of substance. Additionally, theoutlet line 30 routes a mixture of the substance and the conveyance fluid that has not been fully separated to a container or the like for further separation. Additionally, the high pressure conveyance gas fromoutlet line 30 may be utilized for power generation through its expansion, thus increasing the overall thermal efficiency of the system. - Advantageously, the
separation device 24 separates the conveyance fluid from the solid substance just prior to feeding the solid substance to thegasifier 12. Avoiding the presence of the conveyance gas in thegasifier 12 increases the overall residence time and therefore thermal conversion of the substance to producer gas. Additionally, the size of thegasifier 12, as well as all downstream equipment, does not need to be increased to accommodate the conveyance fluid. - While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.
Claims (19)
1. A fuel supply system for a gasification system comprising:
a gasifier;
a feed line for routing a substance and a conveyance fluid toward the gasifier; and
a separation device located upstream of the gasifier and configured to receive the substance and the conveyance fluid from the feed line, the separation device separating the substance and the conveyance fluid, wherein only the substance is routed to the gasifier.
2. The fuel supply system of claim 1 , wherein the separation device is located immediately upstream of the gasifier.
3. The fuel supply system of claim 1 , wherein the separation device comprises a cyclone separator.
4. The fuel supply system of claim 1 , wherein the separation device comprises an impingement plate.
5. The fuel supply system of claim 1 , wherein the separation device comprises a filtering separator.
6. The fuel supply system of claim 1 , wherein the separation device comprises an expander separator.
7. The fuel supply system of claim 1 , wherein the substance comprises a solid substance.
8. The fuel supply system of claim 7 , wherein the substance comprises coal.
9. The fuel supply system of claim 1 , wherein the conveyance fluid comprises a gas.
10. The fuel supply system of claim 9 , wherein the conveyance fluid comprises nitrogen.
11. The fuel supply system of claim 9 , wherein the conveyance fluid comprises carbon dioxide.
12. The fuel supply system of claim 1 , further comprising an outlet line operatively coupled to the separation device, the outlet line configured to route the conveyance fluid from the separation device.
13. The fuel supply system of claim 12 , wherein the outlet line routes the conveyance fluid and a portion of the substance to a container for separation.
14. The fuel supply system of claim 1 , further comprising:
a substance storage structure containing a substance supply; and
a pump operatively coupled to the substance storage structure and configured to pump the substance into the feed line.
15. The fuel supply system of claim 14 , further comprising a pump manifold containing the conveyance fluid for mixing with the substance.
16. The fuel supply system of claim 12 , wherein the conveyance gas routed through the outlet line undergoes expansion for power generation.
17. A fuel supply system for a gasification system comprising:
a gasifier;
a storage structure containing a carbonaceous fuel in a solid state;
a pump operatively coupled to the storage structure and configured to pump the carbonaceous fuel;
a pump manifold containing a conveyance gas for mixing with the carbonaceous fuel;
a feed line for routing a mixture of the carbonaceous fuel and the conveyance gas toward the gasifier; and
a cyclone separator located immediately upstream of the gasifier and coupled to the gasifier with a feed injector, the cyclone separator configured to receive the carbonaceous fuel and the conveyance gas from the feed line, the cyclone separator separating the carbonaceous fuel and the conveyance gas, wherein only the carbonaceous fuel is routed to the gasifier.
18. The fuel supply system of claim 17 , wherein the conveyance gas comprises nitrogen.
19. The fuel supply system of claim 16 , wherein the conveyance gas comprises carbon dioxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/680,404 US20160298041A1 (en) | 2015-04-07 | 2015-04-07 | Fuel supply system for a gasification system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US14/680,404 US20160298041A1 (en) | 2015-04-07 | 2015-04-07 | Fuel supply system for a gasification system |
Publications (1)
Publication Number | Publication Date |
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US20160298041A1 true US20160298041A1 (en) | 2016-10-13 |
Family
ID=57111650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/680,404 Abandoned US20160298041A1 (en) | 2015-04-07 | 2015-04-07 | Fuel supply system for a gasification system |
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US (1) | US20160298041A1 (en) |
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2015
- 2015-04-07 US US14/680,404 patent/US20160298041A1/en not_active Abandoned
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AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NAPHADE, PRAVIN SADASHIV;OPPENHEIM, JUDITH PAULINE;TABER, WADE ALBERT;SIGNING DATES FROM 20150223 TO 20150302;REEL/FRAME:035348/0236 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |