AU2009101241A4 - Combustion and heat exchange system for indirectly fired gas turbine - Google Patents
Combustion and heat exchange system for indirectly fired gas turbine Download PDFInfo
- Publication number
- AU2009101241A4 AU2009101241A4 AU2009101241A AU2009101241A AU2009101241A4 AU 2009101241 A4 AU2009101241 A4 AU 2009101241A4 AU 2009101241 A AU2009101241 A AU 2009101241A AU 2009101241 A AU2009101241 A AU 2009101241A AU 2009101241 A4 AU2009101241 A4 AU 2009101241A4
- Authority
- AU
- Australia
- Prior art keywords
- ash
- combustion
- combustion chamber
- fuel
- air
- 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.)
- Ceased
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 24
- 239000000446 fuel Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000002028 Biomass Substances 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000010304 firing Methods 0.000 claims 1
- 239000000295 fuel oil Substances 0.000 claims 1
- 239000004071 soot Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000537377 Fraxinus berlandieriana Species 0.000 description 1
- 241000565362 Fraxinus velutina Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000004058 oil shale Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/26—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension
- F02C3/28—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension using a separate gas producer for gasifying the fuel before combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C1/00—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid
- F02C1/04—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid the working fluid being heated indirectly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
- F02C7/10—Heating air supply before combustion, e.g. by exhaust gases by means of regenerative heat-exchangers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
COMBUSTION AND HEAT EXCHANGE SYSTEM FOR INDIRECTLY FIRED GAS TURBINE This invention relates to an improvement of the methods used to supply thermal energy by means of combustion and heat exchange to indirectly fired gas turbine engines using a large variety of fuels including but not limited to Biomass, waste products, coal, tar, oils sands, oil shale etc. One of the major issues confronting the use of gas turbine engines is the very tight fuel quality constraints designed to protect the gas turbine from damage from erosion, corrosion or chemical damage. There have been previous attempts to power gas turbines using fuels not meeting these tight specifications however to date they have been inefficient due to fuel pre-processing or still allow a portion of damaging combustion products to come into contact with the turbine components. These problems are overcome by the present invention which consists of An arrangement to supply thermal energy to the air in a gas turbine engine to power the gas turbine engine and any other device powered by said gas turbine engine consisting of 1. A gas turbine engine consisting of air compression and turbine expansion sections where a. air is compressed using axial flow of radial compressors b. said air then passes through a heat exchanger to recover heat from combustion of fuel c. said air passes through a trim combustion chamber to provide for quick start up d. said air expands through a turbine or turbines to provide the energy required for the air compressor and to drive external load e. said air is exhausted from the turbine to become the combustion air mixing with various fuels in the high residence time cyclonic furnace causing a rapid temperature rise of combustion products to form. f. The combustion products from (e) pass over the heat exchangers from (b) to provide the heat for expansion of the air driving the turbine. 2. A trim combustion chamber comprising of a. A combustion system for sufficiently volatile fuels b. A system of ignition for said fuels c. A method of controlling fuel loading to trim the heat output of the combustion chamber 3. A high residence time cyclonic combustion chamber consisting of a. A chamber where a variety of solid. Liquid or gaseous fuel can be combusted b. A vertical cylinder connected to a tapered end in used to separate ash using centripetal acceleration c. An annular rectangular section ring is used to maintain larger fuel particles in the air stream to ensure complete combustion d. The chamber is refractory lined of constructed of high temperature metal with cooled outer surfaces e. The ash discharges via gravity is a molten, powdered or granular form. f. A fuel feeding system for solid. liquid or gaseous fuels 4. A system of gravity ash removal and quenching where a. Ash drains from the unit under the influence of gravity b. Ash is quenched in a vessel sealed by a water or other suitable liquid c. Saturated ash is removed by mechanical means or liquid blowdown 5. High Temperature Radiant and convection heat exchangers consisting off a. A high temperature radiant section i. Said radiant heat exchange section is constructed of suitable material to withstand the internal pressure and the extreme heat of combustion where ii. Said radiant heat exchanger having sufficient area to limit the thermal flux to that below which the material can accommodate iii. Said radiant heat exchanger having internal fins or similar to facilitate the rapid extraction of heat from the heat exchanger surface b. A high temperature convection heat exchange section where i. Said radiant heat exchange section is constructed of suitable material to withstand the internal pressure and the heat from combustion products ii. Said convection heat exchanger is comprised of plate heat exchanger or tube sections iii. Said heat exchanger has sufficient area to limit the thermal flux to that below which the material can accommodate. 6. A method of de-fouling the heat exchangers in place consisting of a. An ash blowing system where compressed fluid is used to create a high velocity pulse of air onto the heat exchange surface in order to remove surface build up / fouling b. Fluid from (a) can be supplied by an external compressor or (b) can be air from the compressed air section of the gas turbine where i. Only a small proportion (<1%) of the compressed air in (b) is used for this purpose ii. The air is continuously bled into a receiver vessel of such volume and at such a rate as to cause no appreciable disturbance to the air flowing through the turbine iii. The air is directed as a series of rapid pulses through the heat exchanger to continuously move it along the heat exchanger to exit. iv. The air is preheated to reduce consumption and increase volume/effectiveness. Written by Bevan Dooley BTOLA Pty Ltd
Claims (10)
1. A method of indirect firing of Gas Turbine engines using high residence time cyclonic combustion chamber and high temperature heat exchangers allowing the use of poor quality lower value fuels such as biomass, waste material, heavy oils, dirty gases, high ash fuels etc without the need for extensive fuel processing to fuel the turbine engine
2. Only clean air passes through the turbine engine of claim (1)
3. High temperature heat exchanger of claim (1) are of sufficient size and design to transfer heat to the working fluid while remaining within their design limits
4. Where the cyclonic combustion chamber of claim (1) consists of a tapered cylindrical vessel where fuel and air is directed tangentially to ensure that fuel and ash a thrown to the wall of the vessel.
5. Where a cyclonic combustion chamber of claim (4) facilitates the complete combustion of fuels and facilitates the removal of ash
6. The cyclonic combustion chamber of claim (4) is designed to continuously removed ash in a granular of molten state
7. The discharge air stream for the turbine in claim (1) is used as the combustion air supply to the combustion chamber in Claim (4)
8. An ash removal system continuously removes ash for the combustion cyclone
9. The Ash removal system of claim (4) allows the quenching of the ash in a fluid and removal by blow down or mechanical means
10. A system of removing soot, ash and other fouling agents from the heat exchange sections of claim (2) is continuously removed by direction of high energy fluid streams Applicants Date Bevan Dooley 01 December 2009 David Dooley
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2009101241A AU2009101241A4 (en) | 2009-12-01 | 2009-12-01 | Combustion and heat exchange system for indirectly fired gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2009101241A AU2009101241A4 (en) | 2009-12-01 | 2009-12-01 | Combustion and heat exchange system for indirectly fired gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2009101241A4 true AU2009101241A4 (en) | 2010-01-07 |
Family
ID=41480477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2009101241A Ceased AU2009101241A4 (en) | 2009-12-01 | 2009-12-01 | Combustion and heat exchange system for indirectly fired gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2009101241A4 (en) |
-
2009
- 2009-12-01 AU AU2009101241A patent/AU2009101241A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |