CN215216317U - Membrane-method oxygen-enriched local combustion-supporting system - Google Patents
Membrane-method oxygen-enriched local combustion-supporting system Download PDFInfo
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- CN215216317U CN215216317U CN202120418503.6U CN202120418503U CN215216317U CN 215216317 U CN215216317 U CN 215216317U CN 202120418503 U CN202120418503 U CN 202120418503U CN 215216317 U CN215216317 U CN 215216317U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a membrane oxygen-enriched local combustion-supporting system, which comprises an air filtering device (1), a fan (2), an oxygen-enriched generator (3), a vacuum pump (4), a fan (5), an oxygen-enriched nozzle system (6) and an oxygen-enriched nozzle system II (7); oxygen-enriched air (oxygen concentration is 29 +/-2%) prepared by the oxygen-enriched generator (3) through a membrane method is partially sent to the square box furnace through the special oxygen-enriched nozzle system (6) for combustion supporting, and partially sent to the cylindrical furnace through the special oxygen-enriched nozzle system II (7) for combustion supporting. The utility model can accelerate the fuel burning speed and promote the complete burning; the ignition temperature and the activation energy of the fuel are reduced, and the burnout time is reduced; the heat efficiency of the boiler is improved, energy is saved, emission is reduced, and good economic benefit and social benefit are obtained.
Description
Technical Field
The utility model relates to a petrochemical field, in particular to petroleum refining enterprise aviation kerosene hydrogenation unit square chest stove and the local combustion-supporting of embrane method oxygen boosting of drum stove.
Background
Petroleum refining enterprises have various heating furnaces, wherein a lot of heating furnace equipment are old, the exhaust gas temperature is higher, the thermal efficiency is low, and a lot of energy waste is caused. During the thirteen-five period, the comprehensive energy consumption of oil refining is reduced by 2 kg standard oil/ton, and the comprehensive energy consumption of ethylene is reduced by 26 kg standard coal/ton.
The oxygen-enriched combustion technology refers to that fuel is combusted in an oxygen-enriched atmosphere with the oxygen concentration higher than that of common air (the oxygen concentration is 21%), is a high-efficiency energy-saving and emission-reducing combustion technology, is also a significant energy-saving and emission-reducing technology recommended by China for many times, and has many successful applications in the fields of glass industry, metallurgical industry and petroleum refining.
The oxygen-enriched combustion technology can improve the flame temperature and blackness; the combustion speed is accelerated, and the complete combustion is promoted; the ignition temperature and the activation energy of the fuel are reduced, and the burnout time is reduced; the excess air coefficient is reduced, the flue gas amount after combustion is reduced, the heat efficiency of the boiler can be improved, the heat energy use efficiency is obviously improved, and the like.
Membrane method oxygen enrichment: oxygen in the air is driven to pass through preferentially under the driving of pressure difference by utilizing different permeation rates of all components in the air when the components penetrate through the polymer membrane, so that the oxygen-enriched air with stable oxygen concentration and flow is obtained. Is suitable for preparing oxygen enrichment on a medium and small scale, small occupied area of equipment and long service life of the oxygen enrichment membrane component.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a membrane method oxygen-enriched local combustion-supporting device and a system for a square box furnace and a cylinder furnace of a aviation kerosene hydrogenation device in petroleum refining enterprises, which can accelerate the combustion speed of fuel and promote the complete combustion; the ignition temperature and the activation energy of the fuel are reduced, and the burnout time is reduced; the heat efficiency of the boiler is improved, energy is saved, emission is reduced, and good economic benefit and social benefit are obtained.
The technical scheme of the utility model is realized like this: a membrane oxygen-enriched local combustion-supporting system comprises an air filtering device (1), a first fan (2), an oxygen-enriched generator (3), a vacuum pump (4), a second fan (5), an oxygen-enriched nozzle system (6) and an oxygen-enriched nozzle system II (7); oxygen-enriched air (oxygen concentration is 29 +/-2%) prepared by the oxygen-enriched generator (3) through a membrane method is partially sent to the square box furnace through the oxygen-enriched nozzle system (6) for combustion supporting, and partially sent to the cylindrical furnace through the oxygen-enriched nozzle system II (7) for combustion supporting.
The air input end (8) is connected with the input end of the air filtering device (1), and the output end of the air filtering device (1) is connected with the input end of the fan (2).
The output end of the fan (2) is connected with the input end of the oxygen-enriched generator (3).
The discharge end (10) of the oxygen-enriched generator (3) is discharged on site, and the output end of the oxygen-enriched generator (3) is connected with the input end of the vacuum pump (4).
The output end of the vacuum pump (4) is connected with the input end of the fan (5) and the input end of the fan bypass (9).
The fan (5) and the fan bypass (9) are arranged in parallel. The fan (5) or the fan bypass (9) can be independently started according to the process requirements of the system.
The output end of the fan (5) and the output end of the fan bypass (9) are connected with the input end of the special oxygen-enriched nozzle system I (6) and the input end of the special oxygen-enriched nozzle system II (7).
The output end of the fan (5) and the output end of the fan bypass (9) are connected with the oxygen-enriched pressure monitoring system (13), and the oxygen-enriched pressure monitoring system (13) is provided with a self-operated pressure regulating valve.
The air filtering device (1) is designed according to the ventilation volume and consists of four stages of filtering cotton, a G4 primary filter, an FV middle-effect filter and a 10-HV high-efficiency filter, and dust and solid particles in the air input end (8) are effectively removed.
The oxygen-enriched generator (3) is composed of a high-molecular roll type oxygen-enriched membrane component which preferentially permeates oxygen, a vacuum uniform distributor, a shell and the like.
The output end of the oxygen-enriched nozzle system (6) is connected with the input end (11) of the square box furnace. The oxygen-enriched nozzle system (6) is composed of a high-temperature-resistant nozzle, a heat-resistant steel pipe, a high-temperature metal hose and the like.
The output end of the oxygen-enriched nozzle system II (7) is connected with the input end (12) of the cylindrical furnace. And the oxygen-enriched nozzle system II (7) comprises a high-temperature-resistant nozzle, a heat-resistant steel pipe, a high-temperature metal hose and the like.
The output ends of the first oxygen-enriched nozzle system (6) and the second oxygen-enriched nozzle system (7) output oxygen-enriched air quantities through valve opening regulation and control on corresponding pipelines.
The total oxygen-enriched air volume of the system is separated and prepared by the high molecular roll type oxygen-enriched membrane component in the oxygen-enriched generator (3), and each high molecular roll type oxygen-enriched membrane component: under the conditions of absolute pressure less than or equal to 0.025MPa, temperature 20 +/-2 deg.C, humidity less than 70% and air inlet amount greater than or equal to 10 times of oxygen-enriched air amount, oxygen-enriched concentration is 29.0 +/-2 (V)%, and oxygen-enriched flow is 14 +/-3 Nm3/hr。
The utility model is used for petroleum refining enterprise aviation kerosene hydrogenation unit side case stove and the local combustion-supporting equipment of embrane method oxygen boosting and system of drum stove generally adopt the negative pressure operation, and air input end (8) are sent into rich oxygen generator (3) by fan (2) and are separated after dust and solid particle wherein through air filter (1) desorption. The discharge end (10) at the upper part of the oxygen-rich generator (3) is rich in nitrogen and discharged on site, and oxygen-rich air at the output end of the oxygen-rich generator (3) is pumped by the vacuum pump (4) and then is sent to the second fan (5) and the fan bypass (9). The second fan (5) and the fan bypass (9) are arranged in parallel, and the second fan (5) is selectively started to send the oxygen-enriched air or the fan bypass (9) is started to send the oxygen-enriched air by means of negative pressure in the boiler according to the working condition of the boiler. Part of the oxygen-enriched air (with the oxygen concentration of 29 +/-2%) is sent to the square box furnace for combustion supporting through the oxygen-enriched nozzle system (6), and the other part of the oxygen-enriched air is sent to the cylindrical furnace for combustion supporting through the oxygen-enriched nozzle system (7). High-quality oxygen-enriched air is sprayed into the furnace at high speed through the oxygen-enriched nozzle, so that the carbon content of fly ash can be reduced, and NOx can be reduced; and negative pressure is formed to entrain surrounding unburnt substances to be fully combusted in the hearth in time, and relatively less combustion-supporting air is used as far as possible to obviously improve the central temperature of flame and obviously increase radiant heat so as to achieve the purposes of energy conservation, emission reduction and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a system.
In the figure: 1, an air filtering device; 2, a first fan; 3, an oxygen-rich generator; 4, a vacuum pump; 5, a second fan; 6, the oxygen-enriched nozzle system is uniform; 7, an oxygen-enriched nozzle system II; 8, an air input end; 9, a fan bypass; 10, the discharge end of the oxygen-enriched generator; 11, square box furnace input end; 12, a cylinder furnace input end; 13, an oxygen-enriched pressure monitoring system.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A membrane oxygen-enriched local combustion-supporting system comprises an air filtering device 1, a first fan 2, an oxygen-enriched generator 3, a vacuum pump 4, a second fan 5, an oxygen-enriched nozzle system 6 and an oxygen-enriched nozzle system 7; oxygen-enriched air (oxygen concentration is 29 +/-2%) prepared by the oxygen-enriched generator 3 through a membrane method is partially sent to the square box furnace through the oxygen-enriched nozzle system 6 for combustion supporting, and partially sent to the cylindrical furnace through the oxygen-enriched nozzle system II 7 for combustion supporting.
The air input end 8 is connected with the input end of the air filtering device 1, and the output end of the air filtering device 1 is connected with the input end of the fan 2.
The output end of the fan 2 is connected with the input end of the oxygen-enriched generator 3.
The discharge end 10 of the oxygen-rich generator 3 is discharged in situ, and the output end of the oxygen-rich generator 3 is connected with the input end of the vacuum pump 4.
The output end of the vacuum pump 4 is connected with the input end of the fan 5 and the input end of the fan bypass 9.
The fan 5 and the fan bypass 9 are arranged in parallel. The fan 5 or the fan bypass 9 can be turned on individually according to system process requirements.
The output end of the fan 5 and the output end of the fan bypass 9 are connected with the input end of the special oxygen-enriched nozzle system 6 and the input end of the special oxygen-enriched nozzle system II 7.
The output end of the fan 5 and the output end of the fan bypass 9 are connected with the oxygen-enriched pressure monitoring system 13, and the oxygen-enriched pressure monitoring system 13 is provided with a self-operated pressure regulating valve.
The air filtering device 1 is designed according to the ventilation quantity, is composed of four stages of filtering cotton, a G4 primary filter, an FV middle-effect filter and a 10-HV high-efficiency filter, and effectively removes dust and solid particles in the air input end 8.
The oxygen-enriched generator 3 is composed of a high molecular roll type oxygen-enriched membrane component which preferentially permeates oxygen, a vacuum uniform distributor, a shell and the like.
The output end of the oxygen-enriched nozzle system 6 is connected with the input end 11 of the square box furnace. The oxygen-enriched nozzle system 6 comprises a high-temperature-resistant nozzle, a heat-resistant steel pipe, a high-temperature metal hose and the like.
The output end of the second oxygen-enriched nozzle system 7 is connected with the input end 12 of the cylindrical furnace. The second oxygen-enriched nozzle system 7 is composed of a high-temperature-resistant nozzle, a heat-resistant steel pipe, a high-temperature metal hose and the like.
The output oxygen-enriched air quantity of the output end of the oxygen-enriched nozzle system I6 and the output end of the oxygen-enriched nozzle system II 7 is regulated and controlled by the valve opening on the corresponding pipeline.
The total oxygen-enriched air volume of the system is separated and prepared by high molecular roll type oxygen-enriched membrane components in the oxygen-enriched generator 3, and each high molecular roll type oxygen-enriched membrane component: under the conditions of absolute pressure less than or equal to 0.025MPa, temperature 20 +/-2 deg.C, humidity less than 70% and air inlet amount greater than or equal to 10 times of oxygen-enriched air amount, oxygen-enriched concentration is 29.0 +/-2 (V)%, and oxygen-enriched flow is 14 +/-3 Nm3/hr。
The utility model is used for petroleum refining enterprise aviation kerosene hydrogenation unit side case stove and the local combustion-supporting equipment of embrane method oxygen boosting and system of drum stove generally adopt the negative pressure operation, and air input 8 is after dust and solid particle wherein of air filter 1 desorption, send into rich oxygen generator 3 by fan one 2 and separate. The discharge end 10 at the upper part of the oxygen-rich generator 3 is discharged with rich nitrogen on site, and the oxygen-rich air at the output end of the oxygen-rich generator 3 is pumped by the vacuum pump 4 and then is sent to the second fan 5 and the fan bypass 9. The second fan 5 and the fan bypass 9 are arranged in parallel, and according to the working condition of the boiler, the second fan 5 is selected to be started to send oxygen-enriched air, or the fan bypass 9 is started to send the oxygen-enriched air by means of negative pressure in the boiler. Oxygen-enriched air (oxygen concentration is 29 +/-2%) is partially sent to the square box furnace for combustion supporting through the oxygen-enriched nozzle system 6, and is partially sent to the cylindrical furnace for combustion supporting through the oxygen-enriched nozzle system two 7. High-quality oxygen-enriched air is sprayed into the furnace at high speed through the oxygen-enriched nozzle, so that the carbon content of fly ash can be reduced, and NOx can be reduced; and negative pressure is formed to entrain surrounding unburnt substances to be fully combusted in the hearth in time, and relatively less combustion-supporting air is used as far as possible to obviously improve the central temperature of flame and obviously increase radiant heat so as to achieve the purposes of energy conservation, emission reduction and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope of the present invention.
Claims (5)
1. A membrane oxygen-enriched local combustion-supporting system is characterized by comprising an air filtering device (1), a first fan (2), an oxygen-enriched generator (3), a vacuum pump (4), a second fan (5), an oxygen-enriched nozzle system (6) and an oxygen-enriched nozzle system (7);
the air input end (8) is connected with the input end of the air filtering device (1), and the output end of the air filtering device (1) is connected with the input end of the first fan (2);
the output end of the first fan (2) is connected with the input end of the oxygen-enriched generator (3);
the output end of the oxygen-enriched generator (3) is connected with the input end of the vacuum pump (4);
the output end of the vacuum pump (4) is connected with the input end of the second fan (5) and the input end of the fan bypass (9);
the output end of the second fan (5) is connected with the input end of the first oxygen-enriched nozzle system (6) and the input end of the second oxygen-enriched nozzle system (7).
2. A membrane-method oxygen-enriched local combustion-supporting system according to claim 1, wherein a fan bypass (9) is connected between the output end of the vacuum pump (4) and the output end of the second fan (5) to enable the second fan (5) and the fan bypass (9) to be connected in parallel.
3. A membrane process oxygen-enriched local combustion-supporting system according to claim 1 or 2, wherein the air filtering device (1) comprises a four-stage filtering assembly of filter cotton, a G4 primary filter, an FV intermediate filter and a 10 HV high-efficiency filter.
4. The membrane-method oxygen-enriched local combustion-supporting system according to claim 1 or 2, wherein a polymer roll-type oxygen-enriched membrane component is arranged in the oxygen-enriched generator (3).
5. The membrane-method oxygen-enriched local combustion-supporting system according to claim 2, characterized in that: the output end of the second fan (5) and the output end of the fan bypass (9) are connected with an oxygen-enriched pressure monitoring system (13), and the oxygen-enriched pressure monitoring system (13) is provided with a self-operated pressure regulating valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120418503.6U CN215216317U (en) | 2021-02-26 | 2021-02-26 | Membrane-method oxygen-enriched local combustion-supporting system |
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| CN202120418503.6U CN215216317U (en) | 2021-02-26 | 2021-02-26 | Membrane-method oxygen-enriched local combustion-supporting system |
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| CN215216317U true CN215216317U (en) | 2021-12-17 |
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