CN113175396A - Mixed combustion power generation system utilizing high-concentration gas and low-concentration gas - Google Patents
Mixed combustion power generation system utilizing high-concentration gas and low-concentration gas Download PDFInfo
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- CN113175396A CN113175396A CN202110663416.1A CN202110663416A CN113175396A CN 113175396 A CN113175396 A CN 113175396A CN 202110663416 A CN202110663416 A CN 202110663416A CN 113175396 A CN113175396 A CN 113175396A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 29
- 238000010248 power generation Methods 0.000 title claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 101
- 238000002156 mixing Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims 2
- 230000008676 import Effects 0.000 claims 1
- 239000002918 waste heat Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/04—Gas-air mixing apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a mixed combustion power generation system utilizing high-concentration gas and low-concentration gas. The high-concentration and low-concentration gas mixed combustion power generation system solves the problem of matching and adjusting the gas concentration in the low-concentration gas combustion power generation process, realizes the mixed safe combustion power generation of low-concentration gas and high-concentration gas and the recovery of the waste heat of the flue gas, can be widely applied to various low-concentration gas combustion power generation systems, and realizes the efficient safe combustion power generation and the waste heat recovery and utilization of the low-concentration gas.
Description
Technical Field
The invention relates to the field of machinery, in particular to a power generation system by mixed combustion of high-concentration gas and low-concentration gas.
Background
At present, a gas combustion power generation system is mainly used for driving a generator to generate power by an internal combustion engine, a gas turbine, a Stirling engine, a steam turbine and the like, and in order to realize stable operation of a driving machine, the concentration of gas is generally required to be at least more than 9% V so as to meet the requirement of stable air-fuel ratio, realize stable combustion of the gas and drive the generator to generate power. For gas with the concentration lower than 9% V, such as coal bed gas, the environment pollution and resource waste caused by directly discharging the atmosphere are generally caused at present, and the gas needs to be recycled. For low-concentration gas, various restriction factors exist in the current utilization process, especially for gas which is mixed with air and is within an explosion limit range and has 5-9% V, safety must be ensured in the combustion power generation process, and in addition, because the low-concentration gas has a low heat value and cannot be directly combusted and utilized, high-concentration gas needs to be mixed in the utilization process so as to meet the air-fuel ratio requirements of normal combustion and power generation. The low-concentration gas is effectively utilized to burn and generate electricity, two key problems of safe mixing and stable burning need to be solved at the same time, and especially, the safety problem is easy to occur in the system starting and stopping process and the back application end backfire accident state, thereby influencing the safe utilization of the low-concentration gas.
Disclosure of Invention
In order to overcome the defects, the invention provides a power generation system by mixed combustion of high-concentration gas and low-concentration gas.
A power generation system utilizing mixed combustion of high-concentration gas and low-concentration gas comprises a low-concentration gas conveying pipeline and a high-concentration gas pipeline; the gas generator system is connected in the gas inlet system, the gas inlet system comprises a low-concentration gas conveying pipeline and a high-concentration gas pipeline, a gas inlet, a water ring vacuum pump, a flame arrester, a pressure detection sensor, a valve, a flowmeter, a concentration detector, a mixer, an emptying valve, a switching valve and a gas generator system are sequentially arranged on the low-concentration gas conveying pipeline, the gas generator system is arranged at the tail end of the mixer, a control valve is connected with a gas inlet, an air purging inlet is connected with the low-concentration gas conveying pipeline, the air purging inlet is connected with the low-concentration gas conveying pipeline at the right side of the gas inlet, a control valve II is arranged on the air purging inlet, a quick safety shut-off valve, a pressure sensor, a regulating valve and a flowmeter I are sequentially arranged on the high-concentration gas pipeline, the tail end of the high-concentration gas pipeline is connected with the mixer, and a smoke exhaust flue is arranged on the gas generator system, the upper part of the smoke exhaust flue is provided with a steam generator, and a coil pipe is arranged in the steam generator.
The mixer is provided with a mixing member and a safety fire retardant member.
The end of the mixer in the air inlet system is connected with a heating furnace. The tail end of a mixer in the air inlet system is respectively connected with the heating furnace and the gas generator system.
The mixing and allocating control system is respectively in wired connection with the quick safety shut-off valve, the pressure sensor, the regulating valve, the flowmeter, the first control valve, the second control valve, the second flowmeter, the concentration detector, the emptying valve and the switching valve.
Has the advantages that: the high-concentration and low-concentration gas mixed combustion power generation system solves the problem of matching and adjusting the gas concentration in the low-concentration gas combustion power generation process, realizes the mixed safe combustion power generation of low-concentration gas and high-concentration gas and the recovery of the waste heat of the flue gas, can be widely applied to various low-concentration gas combustion power generation systems, and realizes the efficient safe combustion power generation and the waste heat recovery and utilization of the low-concentration gas.
Drawings
Fig. 1 and 2 are schematic structural views of a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a third embodiment of the present invention.
In the figure: 1. the system comprises a low-concentration gas conveying pipeline, 2, a first control valve, 3, an air purging inlet, 4, a second control valve, 5, a high-concentration gas pipeline, 6, a quick safety cut-off valve, 7, a pressure sensor, 8, a regulating valve, 9, a first flowmeter, 10, a mixing and allocating control system, 11, a coil pipe, 12, a steam generator, 13, a smoke exhaust flue, 15, an emptying valve, 16, a gas generator system, 17, a switching valve, 18, a safe fire retardant component, 19, a mixing component, 20, a mixer, 21, a concentration detector, 22, a second flowmeter, 23, a valve, 24, a pressure detection sensor, 25, a fire retardant, 26, a water ring vacuum pump, 27, an air inlet, 28, an air inlet system, 29 and a heating furnace.
Detailed Description
As shown in fig. 1-4: when the gas generator works normally, low-concentration gas is introduced into the gas generator system 16 from the low-concentration gas conveying pipeline 1 through the water ring vacuum pump 26; the low-concentration gas passes through a flame arrester 25, the pressure sensor 24 detects the pressure of the low-concentration gas, the pressure sensor 24 determines that the low-concentration gas meets the requirement of normal working pressure, then the flow of the low-concentration gas is controlled through a regulating valve 23, the flow meter 22 detects whether the flow meets the requirement, and then the concentration detector 21 detects the concentration of the gas entering the mixer 20; according to the flow and the concentration of the low-concentration gas, the flow of the high-concentration gas is adjusted and controlled by controlling the regulating valve 8, the proper high-concentration gas is supplemented to meet the gas concentration suitable for combustion power generation, and the proper mixed gas concentration is adjusted and controlled by the flow control valve 8, the valve 23, the first flowmeter 9 and the second flowmeter 22 to meet the requirement of a gas power generation system. The mixing and blending control system 10 respectively controls the quick safety shut-off valve 6, the pressure sensor 7, the regulating valve 8, the flow meter 9, the first control valve 2, the second control valve 4, the valve 23, the second flow meter 22, the concentration detector 21, the emptying valve 15 and the switching valve 17. The mixing and blending control system 10 respectively controls the quick safety shut-off valve 6, the pressure sensor 7, the regulating valve 8, the flow meter 9, the control valve I2, the control valve II 4, the valve 23, the flow meter II 22, the concentration detector 21, the emptying valve 15 and the switching valve 17.
In order to prevent the power generation system 16 from backfiring in the combustion process, a fire retardant component 18 is arranged on a mixer 20, when in a starting stage or a shutdown stage and in a fault linkage state, high-concentration gas intake and low-concentration gas intake are cut off, the system enters a purging program, a low-concentration gas inlet valve 2 is closed at the moment, an air intake switching valve 4 is opened, a generator system shut-off valve 17 is closed, an emptying valve 15 is opened, a gas quick shut-off valve 6 is closed, air is introduced through a water ring pump 26 to perform system purging, and the safety of the system operation is ensured. The invention can utilize low-concentration gas to generate electricity, and simultaneously can recover the waste heat in the smoke exhaust by the waste heat recoverer 12 arranged on the smoke exhaust flue, and produce steam or hot water by the steam coil pipe 11 for civil heating or production heating. The mixer 20 in the air intake system 28 may be connected to a heating furnace 29, and the mixer 20 in the air intake system 28 may be connected to the heating furnace 29 and the gas generator system, respectively.
The high-concentration and low-concentration gas mixed combustion power generation system solves the problem of matching and adjusting the gas concentration in the low-concentration gas combustion power generation process, realizes the mixed safe combustion power generation of the low-concentration gas and the high-concentration gas and the recovery of the waste heat of the flue gas, can be widely applied to the low-concentration gas combustion power generation system, and realizes the efficient safe combustion power generation and the waste heat recovery and utilization of the low-concentration gas.
Claims (4)
1. The utility model provides an utilize high low concentration gas co-combustion power generation system, includes low concentration gas pipeline (1) and high concentration gas pipeline (5), its characterized in that: a mixer (20) in an air intake system (28) is connected with a gas generator system (16), the air intake system comprises a low-concentration gas conveying pipeline (1) and a high-concentration gas pipeline (5), an air inlet (27), a water ring vacuum pump (26), a flame arrester (25), a pressure detection sensor (24), a valve (23), a flowmeter (22), a concentration detector (21), the mixer (20), an emptying valve (15), a switching valve (17) and the gas generator system (16) are sequentially arranged on the low-concentration gas conveying pipeline (1), the gas generator system (16) at the tail end of the mixer (20), a control valve I (2) is connected with the air inlet (27), an air purging inlet (3) is connected with the low-concentration gas conveying pipeline (1), the air purging inlet (3) and the low-concentration gas conveying pipeline (1) are connected on the right side of the air inlet (27), install control valve two (4) on air purge import (3), install quick safety cut-off valve (6), pressure sensor (7), governing valve (8) and flowmeter (9) in proper order on high concentration gas pipeline (5), high concentration gas pipeline (5) end-to-end connection blender (20), flue (13) of discharging fume has on gas generator system (16), flue (13) upper portion of discharging fume has steam generator (12), is provided with coil pipe (11) in steam generator (12).
2. The system according to claim 1, wherein the system comprises: the mixer (20) is provided with a mixing member (19) and a safety fire retardant member (18).
3. The system according to claim 1, wherein the system comprises: the end of the mixer (20) in the air inlet system (28) is connected with a heating furnace (29).
4. The system according to claim 1, wherein the system comprises: the mixing and allocating control system (10) is respectively in wired connection with a quick safety cut-off valve (6), a pressure sensor (7), a regulating valve (8), a flowmeter (9), a control valve I (2), a control valve II (4), a valve (23), a flowmeter II (22), a concentration detector (21), an emptying valve (15) and a switching valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110663416.1A CN113175396A (en) | 2021-06-15 | 2021-06-15 | Mixed combustion power generation system utilizing high-concentration gas and low-concentration gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110663416.1A CN113175396A (en) | 2021-06-15 | 2021-06-15 | Mixed combustion power generation system utilizing high-concentration gas and low-concentration gas |
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| Publication Number | Publication Date |
|---|---|
| CN113175396A true CN113175396A (en) | 2021-07-27 |
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| CN202110663416.1A Pending CN113175396A (en) | 2021-06-15 | 2021-06-15 | Mixed combustion power generation system utilizing high-concentration gas and low-concentration gas |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2143930A1 (en) * | 2007-12-14 | 2010-01-13 | Mitsubishi Heavy Industries, Ltd. | Control method of gas engine system and that system |
| CN102562131A (en) * | 2010-12-24 | 2012-07-11 | 上海攀极投资有限公司 | Coal mine gas comprehensive application system and application method thereof |
| US20130055712A1 (en) * | 2010-05-31 | 2013-03-07 | Mitsubishi Heavy Industries, Ltd. | Gas engine |
| CN204619909U (en) * | 2015-05-25 | 2015-09-09 | 北京扬德环境科技股份有限公司 | The automatic mixing device of a kind of methane gas |
| CN111535786A (en) * | 2020-05-22 | 2020-08-14 | 山东理工大学 | Device and method for coal mine high-low negative pressure gas extraction mixing conveying power generation |
| CN112178460A (en) * | 2020-09-30 | 2021-01-05 | 山西凯嘉煤层气发电有限公司 | High-low concentration gas mixing system and gas mixing process control method thereof |
| CN112459929A (en) * | 2020-12-14 | 2021-03-09 | 湖南省力宇燃气动力有限公司 | Air supply system of low-concentration gas engine |
| CN112604597A (en) * | 2020-12-09 | 2021-04-06 | 河南理工大学 | High-low concentration gas mixing device and using method thereof |
| CN214836762U (en) * | 2021-06-15 | 2021-11-23 | 大连亿斯德特种智能装备有限公司 | Mixed combustion power generation system utilizing high-concentration gas and low-concentration gas |
-
2021
- 2021-06-15 CN CN202110663416.1A patent/CN113175396A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2143930A1 (en) * | 2007-12-14 | 2010-01-13 | Mitsubishi Heavy Industries, Ltd. | Control method of gas engine system and that system |
| US20130055712A1 (en) * | 2010-05-31 | 2013-03-07 | Mitsubishi Heavy Industries, Ltd. | Gas engine |
| CN102562131A (en) * | 2010-12-24 | 2012-07-11 | 上海攀极投资有限公司 | Coal mine gas comprehensive application system and application method thereof |
| CN204619909U (en) * | 2015-05-25 | 2015-09-09 | 北京扬德环境科技股份有限公司 | The automatic mixing device of a kind of methane gas |
| CN111535786A (en) * | 2020-05-22 | 2020-08-14 | 山东理工大学 | Device and method for coal mine high-low negative pressure gas extraction mixing conveying power generation |
| CN112178460A (en) * | 2020-09-30 | 2021-01-05 | 山西凯嘉煤层气发电有限公司 | High-low concentration gas mixing system and gas mixing process control method thereof |
| CN112604597A (en) * | 2020-12-09 | 2021-04-06 | 河南理工大学 | High-low concentration gas mixing device and using method thereof |
| CN112459929A (en) * | 2020-12-14 | 2021-03-09 | 湖南省力宇燃气动力有限公司 | Air supply system of low-concentration gas engine |
| CN214836762U (en) * | 2021-06-15 | 2021-11-23 | 大连亿斯德特种智能装备有限公司 | Mixed combustion power generation system utilizing high-concentration gas and low-concentration gas |
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Effective date of registration: 20240207 Address after: Building 3, Anshun building, Dafeng Road (shuiyoucheng), Hongqiao District, Tianjin Applicant after: China Coal Tianjin Design Engineering Co.,Ltd. Country or region after: China Applicant after: Yiside special intelligent equipment (Dalian) Co.,Ltd. Address before: 116051 113, Lushun Middle Road, Lushunkou District, Liaoning, Dalian Applicant before: Dalian Yiside Special Intelligent Equipment Co.,Ltd. Country or region before: China |
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Application publication date: 20210727 |