CN112377916A - Regenerative cooling system and method based on hydrocarbon fuel deep cracking reaction flow - Google Patents
Regenerative cooling system and method based on hydrocarbon fuel deep cracking reaction flow Download PDFInfo
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- CN112377916A CN112377916A CN202011250211.2A CN202011250211A CN112377916A CN 112377916 A CN112377916 A CN 112377916A CN 202011250211 A CN202011250211 A CN 202011250211A CN 112377916 A CN112377916 A CN 112377916A
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- fuel
- heat exchange
- liquid collecting
- collecting cavity
- exchange panel
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- 239000000446 fuel Substances 0.000 title claims abstract description 98
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 25
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 21
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 10
- 238000005336 cracking Methods 0.000 title claims abstract description 10
- 239000000571 coke Substances 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 18
- 230000008021 deposition Effects 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000002828 fuel tank Substances 0.000 claims description 12
- 239000000295 fuel oil Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 238000004939 coking Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 5
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 20
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- 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
- F02C7/22—Fuel supply systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a regenerative cooling system and a regenerative cooling method based on a hydrocarbon fuel deep cracking reaction flow, and belongs to the technical field of regenerative cooling. The invention can utilize the chemical heat sink of the hydrocarbon fuel to the utmost extent, and realize the wall surface cooling process under the extreme heat flow condition; the coking and deposition of the hydrocarbon fuel are effectively inhibited, coke particles can be discharged out of the system, the reliability of the system is maintained, and the risk that the coke blocks a fuel pipeline is completely eliminated; the system has strong adaptability, is suitable for any object adopting hydrocarbon fuel as an active cooling medium, and has high reliability.
Description
Technical Field
The invention belongs to the technical field of regenerative cooling, and particularly relates to a regenerative cooling system and method based on a hydrocarbon fuel deep cracking reaction flow.
Background
An endothermic reaction of hydrocarbon fuel, namely a 'deep cracking reaction', is an effective means which is expected to solve the problem of overheating of the wall surface of the combustion chamber, the technology can realize the cooling of the high-heat wall surface under the condition of not adding additional equipment, and the technology is a regeneration cooling technology with great prospect. Chinese patent publication No. CN 106322436 a discloses a microchannel regenerative-cooled micro combustor, in which a fuel microchannel is laid on a hot wall surface of the combustor, so as to effectively cool the wall surface of the combustor, and meanwhile, the heated fuel generates small molecule combustible gas due to thermal cracking reaction, thereby effectively improving ignition performance.
The Chinese patent with the publication number of CN 106322436A has the following disadvantages: no statement is made as to how coking deposits from fuel oil are treated during pyrolysis, literature [ aeronautics and dynamics, 2013, 28 (4): 832, 837 and [ Journal of Engineering for Gas Turbines and Power,2001,123, 741, 746] refer to hydrocarbon fuels (fuel oil) which are prone to coking at high temperature, and coking can block micro-channels, so that the high-temperature coking deposition of the fuel oil needs to be treated to ensure the normal operation of the regenerative cooling system.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: on one hand, the hydrocarbon fuel can work at a higher temperature, and the chemical heat sink advantage of the hydrocarbon fuel is fully exerted; on the other hand, the coke deposition is effectively prevented, the cooling runner is kept to work normally, and the stable work of a subsequent system is ensured.
(II) technical scheme
In order to solve the technical problem, the invention provides a regenerative cooling system based on a hydrocarbon fuel deep cracking reaction flow, which comprises a fuel tank, a fuel supply pump, an inlet liquid collecting cavity, a heat exchange panel, an outlet liquid collecting cavity, a cyclone separator, a carbon deposition tank, a high-temperature gas turbine and a gas nozzle, wherein the fuel tank is connected with the fuel supply pump;
the fuel tank is used for fuel storage equipment;
the fuel supply pump is used for pumping fuel stored in the fuel tank;
the fuel pumped by the fuel supply pump is injected into the inlet liquid collecting cavity, and the inlet liquid collecting cavity is internally provided with a flow disturbing device for uniformly distributing the fuel;
after being uniformly distributed by the inlet liquid collecting cavity, the fuel flows into the heat exchange panel and generates a heat exchange process with the wall surface of the channel in the heat exchange panel, so that the wall surface of the channel is cooled;
a secondary reflux groove is arranged in the middle of the heat exchange panel flow passage; the fuel absorbs heat in the heat exchange panel and then flows into the outlet liquid collecting cavity;
the high-temperature fuel vapor flowing out of the outlet liquid collecting cavity flows into a cyclone separator 6, and coke particles in the fuel vapor can be separated by the cyclone separator;
the carbon deposition tank is used for collecting coke particles separated from the cyclone separator;
the high-temperature gas turbine is driven by the fuel oil steam and is used for driving the fuel supply pump and the gas nozzle to work;
the gas nozzle is provided with a plurality of groups of spray holes on the upper surface and is used for realizing the injection of fuel steam.
Preferably, an inert coating is coated in a position 1/3-1/5 away from an outlet in a flow channel of the heat exchange panel.
Preferably, the ratio of the length of the channel of the secondary reflux groove to the total length of the flow channel is 1: 50-1: 100.
preferably, the cross-sectional area of the outlet liquid collecting cavity and the total area of the outlet of the heat exchange panel are designed according to the ratio of 10: 1-50: 1.
Preferably, the inlet flow velocity of the cyclone separator ranges from 5 m/s to 20 m/s.
Preferably, the volume ratio of the carbon deposition tank to the cyclone separator is 5: 1-20: 1.
Preferably, the inlet flow speed of the high-temperature gas turbine is 50-200 m/s.
Preferably, the area ratio of the total area of the spray holes of the gas nozzle to the cross section of the maximum position of the nozzle cavity is 1: 50-1: 200.
Preferably, the channel wall surface of the heat exchange panel is a metal wall surface.
The invention also provides a regenerative cooling method based on the system, which comprises the following steps:
the fuel supply pump is driven by the high-temperature gas turbine to pump the fuel stored in the fuel tank;
the fuel pumped by the fuel supply pump is injected into the inlet liquid collecting cavity, and the turbulence device contained in the inlet liquid collecting cavity realizes the uniform distribution of the fuel;
after being uniformly distributed by the inlet liquid collecting cavity, the fuel flows into the heat exchange panel and generates a heat exchange process with the wall surface of the channel in the heat exchange panel, so that the wall surface of the channel is cooled;
the fuel absorbs heat in the heat exchange panel and then flows into the outlet liquid collecting cavity;
high-temperature fuel vapor flowing out of the outlet liquid collecting cavity flows into the cyclone separator, and the cyclone separator separates out coke particles in the fuel vapor; simultaneously, the carbon accumulation tank collects coke particles separated from the cyclone separator;
the gas nozzle realizes the injection of fuel vapor.
(III) advantageous effects
The invention can utilize the chemical heat sink of the hydrocarbon fuel to the utmost extent, and realize the wall surface cooling process under the extreme heat flow condition; the coking and deposition of the hydrocarbon fuel are effectively inhibited, coke particles can be discharged out of the system, the reliability of the system is maintained, and the risk that the coke blocks a fuel pipeline is completely eliminated; the system has strong adaptability, is suitable for any object adopting hydrocarbon fuel as an active cooling medium, and has high reliability.
Drawings
FIG. 1 is a composition diagram of a hydrocarbon fuel deep cracking regeneration cooling system of the present invention.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The invention provides a deep cracking regeneration cooling system and method for hydrocarbon fuel, which can make the hydrocarbon fuel work at a higher temperature and give full play to the advantage of chemical heat sink of the hydrocarbon fuel; on the other hand, the coke deposition is effectively prevented, the cooling flow channel is kept to work normally, and meanwhile, the cyclone separator is arranged at the outlet of the cooling channel to separate out coke particles in high-temperature fuel gas, so that the stable work of a subsequent system is ensured.
Fig. 1 shows the system composition, the regenerative cooling system based on the hydrocarbon fuel deep cracking reaction flow is composed of nine parts, namely a fuel tank 1, a fuel supply pump 2, an inlet liquid collecting cavity 3, a heat exchange panel 4, an outlet liquid collecting cavity 5, a cyclone separator 6, a carbon deposition tank 7, a high-temperature gas turbine 8 and a gas nozzle 9, and the functions and the connection sequence of the parts are as follows:
the fuel tank 1 for a fuel storage facility;
the fuel supply pump 2 is used for pumping the fuel stored in the fuel tank 1, and the power of the fuel supply pump 2 is derived from a turbine driven by high-temperature fuel vapor;
the fuel pumped by the fuel supply pump 2 is injected into the inlet liquid collecting cavity 3, and a flow disturbing device is arranged in the inlet liquid collecting cavity 3 and used for uniformly distributing the fuel;
after being uniformly distributed by the inlet liquid collecting cavity 3, the fuel flows into the heat exchange panel 4 and is subjected to a heat exchange process with the metal wall surface of the heat exchange panel 4, so that the wall surface of the channel is cooled; an inert coating is coated at a position 1/3-1/5 away from an outlet in a flow channel of the heat exchange panel 4 so as to inhibit high-temperature coking;
4 runner middle parts of heat transfer panel are equipped with secondary backward flow groove, and the length of channel is 1 with the total length proportion of runner: 50-1: 100, effectively ensuring the uniform flow distribution of the second section; the fuel absorbs heat in the heat exchange panel 4 and then flows into the outlet liquid collecting cavity 5, and the cross-sectional area of the fuel and the total area of the outlet of the heat exchange panel 4 are designed according to the ratio of 10: 1-50: 1;
the high-temperature fuel steam flowing out of the outlet liquid collecting cavity 5 flows into the cyclone separator 6, the cyclone separator 6 can separate out coke particles in the high-temperature fuel steam, and the flow speed of a cyclone separation inlet ranges from 5 m/s to 20 m/s;
the carbon deposition tank 7 is used for collecting coke particles separated from the cyclone separator 6, and the volume ratio of the carbon deposition tank 7 to the cyclone separator 6 is 5: 1-20: 1;
the high-temperature gas turbine 8 is driven by high-temperature fuel oil steam and is used for driving the fuel supply pump 2 to work, and the inlet flow speed of the turbine is 50-200 m/s;
the gas nozzle 9 is used for high-speed injection of high-temperature fuel steam, a plurality of groups of spray holes are formed in the gas nozzle, and the area ratio of the total area of the spray holes to the cross section of the maximum position of the nozzle cavity is 1: 50-1: 200.
In the invention, the fuel supply pump is driven by the high-temperature gas turbine, and the high-temperature gas turbine is operated by high-temperature fuel steam, so that the heat energy of the fuel steam is effectively converted into kinetic energy, and the energy utilization efficiency of the whole system is improved; a flow disturbing device is arranged in the fuel inlet liquid collecting cavity, and the interference source can effectively ensure the uniform distribution of the flow of each channel; the middle part of the heat exchange panel runner is provided with a secondary reflux groove, and the ratio of the length of the channel to the total length of the runner is 1: 50-1: 100, effectively ensuring the uniform flow distribution of the second section; an inert coating is coated at a position 1/3-1/5 away from an outlet in a flow channel of the heat exchange panel, so that high-temperature coking deposition of hydrocarbon fuel can be effectively inhibited, and coke particles flow out of the heat exchange panel along with a main flow of high-temperature fuel gas; the cross section area of the outlet liquid collecting cavity and the total area of the outlet of the heat exchange panel are designed according to the ratio of 10: 1-50: 1, so that the coke particles can be effectively ensured to smoothly flow out of the outlet of the heat exchange panel; the cyclone separator can separate coke particles from high-temperature fuel steam, wherein the coke particles are deposited downwards into the carbon deposition tank under the action of centrifugal force, and the high-temperature gas is swirled to the high-temperature gas turbine to drive the turbine to do work.
Therefore, the system can utilize the chemical heat sink of the hydrocarbon fuel to the maximum extent and realize the wall surface cooling process under the condition of extreme heat flow in a limited way; the coking and deposition of the hydrocarbon fuel are effectively inhibited, coke particles can be discharged out of the system, the reliability of the system is maintained, and the risk that the coke blocks a fuel pipeline is completely eliminated; the system has strong adaptability, is suitable for any object adopting hydrocarbon fuel as an active cooling medium, and has high reliability.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A regenerative cooling system based on a hydrocarbon fuel deep cracking reaction flow is characterized by comprising a fuel tank, a fuel supply pump, an inlet liquid collecting cavity, a heat exchange panel, an outlet liquid collecting cavity, a cyclone separator, a carbon deposition tank, a high-temperature gas turbine and a gas nozzle;
the fuel tank is used for fuel storage equipment;
the fuel supply pump is used for pumping fuel stored in the fuel tank;
the fuel pumped by the fuel supply pump is injected into the inlet liquid collecting cavity, and the inlet liquid collecting cavity is internally provided with a flow disturbing device for uniformly distributing the fuel;
after being uniformly distributed by the inlet liquid collecting cavity, the fuel flows into the heat exchange panel and generates a heat exchange process with the wall surface of the channel in the heat exchange panel, so that the wall surface of the channel is cooled;
a secondary reflux groove is arranged in the middle of the heat exchange panel flow passage; the fuel absorbs heat in the heat exchange panel and then flows into the outlet liquid collecting cavity;
the high-temperature fuel vapor flowing out of the outlet liquid collecting cavity flows into a cyclone separator 6, and coke particles in the fuel vapor can be separated by the cyclone separator;
the carbon deposition tank is used for collecting coke particles separated from the cyclone separator;
the high-temperature gas turbine is driven by the fuel oil steam and is used for driving the fuel supply pump and the gas nozzle to work;
the gas nozzle is provided with a plurality of groups of spray holes on the upper surface and is used for realizing the injection of fuel steam.
2. The system of claim 1, wherein the inert coating is applied to the flow channel of the heat exchange panel from 1/3 to 1/5 of the outlet.
3. The system of claim 1, wherein the ratio of the length of the channel of the secondary recirculation tank to the total length of the flow channel is 1: 50-1: 100.
4. the system of claim 1, wherein the cross-sectional area of the outlet header and the total area of the heat exchange panel outlets are designed in a range of 10:1 to 50: 1.
5. The system of claim 1, wherein the cyclone has an inlet flow velocity in the range of 5 to 20 m/s.
6. The system of claim 1, wherein the volumetric ratio of the carbon deposition tank to the cyclone is 5:1 to 20: 1.
7. The system of claim 1, wherein the inlet flow velocity of the high temperature gas turbine is 50-200 m/s.
8. The system of claim 1, wherein the ratio of the total area of the spray holes of the gas nozzle to the area of the cross section of the maximum position of the nozzle cavity is 1: 50-1: 200.
9. The system of claim 1, wherein the channel walls of the heat exchange panels are metal walls.
10. A regenerative cooling method implemented based on the system of any one of claims 1 to 9, characterized by comprising the steps of:
the fuel supply pump is driven by the high-temperature gas turbine to pump the fuel stored in the fuel tank;
the fuel pumped by the fuel supply pump is injected into the inlet liquid collecting cavity, and the turbulence device contained in the inlet liquid collecting cavity realizes the uniform distribution of the fuel;
after being uniformly distributed by the inlet liquid collecting cavity, the fuel flows into the heat exchange panel and generates a heat exchange process with the wall surface of the channel in the heat exchange panel, so that the wall surface of the channel is cooled;
the fuel absorbs heat in the heat exchange panel and then flows into the outlet liquid collecting cavity;
high-temperature fuel vapor flowing out of the outlet liquid collecting cavity flows into the cyclone separator, and the cyclone separator separates out coke particles in the fuel vapor; simultaneously, the carbon accumulation tank collects coke particles separated from the cyclone separator;
the gas nozzle realizes the injection of fuel vapor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250211.2A CN112377916A (en) | 2020-11-10 | 2020-11-10 | Regenerative cooling system and method based on hydrocarbon fuel deep cracking reaction flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250211.2A CN112377916A (en) | 2020-11-10 | 2020-11-10 | Regenerative cooling system and method based on hydrocarbon fuel deep cracking reaction flow |
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| Publication Number | Publication Date |
|---|---|
| CN112377916A true CN112377916A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011250211.2A Pending CN112377916A (en) | 2020-11-10 | 2020-11-10 | Regenerative cooling system and method based on hydrocarbon fuel deep cracking reaction flow |
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| CN (1) | CN112377916A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982764Y (en) * | 2006-12-09 | 2007-11-28 | 奇瑞汽车有限公司 | Automobile air conditioner |
| CN102767922A (en) * | 2012-08-10 | 2012-11-07 | 天津三电汽车空调有限公司 | Distributing pipe for micro-channel heat exchanger and micro-channel heat exchanger |
| CN103421531A (en) * | 2013-07-19 | 2013-12-04 | 济南开发区星火科学技术研究院 | Method for restraining cracking furnace pipe from coking |
| CN111535939A (en) * | 2019-12-12 | 2020-08-14 | 西北工业大学 | Fuel injection system and method suitable for regenerative cooling detonation combustion chamber |
-
2020
- 2020-11-10 CN CN202011250211.2A patent/CN112377916A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982764Y (en) * | 2006-12-09 | 2007-11-28 | 奇瑞汽车有限公司 | Automobile air conditioner |
| CN102767922A (en) * | 2012-08-10 | 2012-11-07 | 天津三电汽车空调有限公司 | Distributing pipe for micro-channel heat exchanger and micro-channel heat exchanger |
| CN103421531A (en) * | 2013-07-19 | 2013-12-04 | 济南开发区星火科学技术研究院 | Method for restraining cracking furnace pipe from coking |
| CN111535939A (en) * | 2019-12-12 | 2020-08-14 | 西北工业大学 | Fuel injection system and method suitable for regenerative cooling detonation combustion chamber |
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Application publication date: 20210219 |