CN218455235U - Oxygen-enriched combustion-supporting system of gas kiln - Google Patents
Oxygen-enriched combustion-supporting system of gas kiln Download PDFInfo
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- CN218455235U CN218455235U CN202221618574.1U CN202221618574U CN218455235U CN 218455235 U CN218455235 U CN 218455235U CN 202221618574 U CN202221618574 U CN 202221618574U CN 218455235 U CN218455235 U CN 218455235U
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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
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Abstract
An oxygen-enriched combustion-supporting system of a gas kiln belongs to the technical field of gas industrial kilns. The method is characterized in that: comprises a gas mixing device communicated with a gas inlet of a burner (7), and the gas mixing device is provided with an oxygen-enriched air input port and a fuel gas input port. This gas of gas kiln oxygen boosting combustion-supporting system and oxygen-enriched air mix earlier in gas mixing arrangement, then send the gas after mixing into the combustor burning in, it directly blows in the kiln to have solved the air, make the problem of temperature reduction in the kiln, can also avoid the air to spout into in the kiln, cause the influence to the burning of fuel in the kiln, and the content of nitrogen gas is low in the oxygen-enriched air, the volume of exhaust nitrogen gas has been reduced, avoid nitrogen gas discharge to take away a large amount of heats, guarantee the temperature stability in the kiln, and make things convenient for the temperature in the accurate control kiln.
Description
Technical Field
An oxygen-enriched combustion-supporting system of a gas kiln belongs to the technical field of gas industrial kilns.
Background
The gas burning kiln is one kiln with gas as burning heat source and is used mainly in the calcining of ceramic, glass, etc. the gas may be natural gas, coal gas or liquefied gas as required. In the using process of the gas kiln, the high-temperature resistant spray head is used for directly sending gas into the gas kiln, and combustion-supporting air is also directly sprayed into the kiln, so that the gas is fully combusted, however, nitrogen in the air accounts for most of the air, after oxygen is consumed, a large amount of heat can be taken away by hot nitrogen continuously discharged from the kiln, and in addition, the air is sprayed into the kiln, so that the furnace temperature of the kiln can be influenced, the combustion of the gas can be influenced, the temperature of the kiln is unstable, and the temperature of the kiln is difficult to accurately control.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the oxygen-enriched combustion-supporting system of the gas kiln can be used for overcoming the defects of the prior art and mixing gas and oxygen-enriched air preferentially and then spraying the gas and the oxygen-enriched air into a combustor for combustion.
The utility model provides a technical scheme that its technical problem adopted is: the oxygen-enriched combustion-supporting system of the gas kiln is characterized in that: comprises a gas mixing device communicated with a gas inlet of a burner, and the gas mixing device is provided with an oxygen-enriched air input port and a fuel gas input port.
Preferably, the gas mixing device comprises an ejector, a medium outlet of the ejector is communicated with a gas inlet of the burner, a high-pressure medium inlet of the ejector is the gas input port, and a low-pressure medium inlet of the ejector is the oxygen-enriched air input port.
Preferably, the gas mixing device further comprises a flow regulating device, and the oxygen-enriched air input port or the fuel gas input port of the gas mixing device is connected with the flow regulating device. The flow of the oxygen-enriched air or the fuel gas is conveniently adjusted through the flow adjusting device, so that the volume ratio of the oxygen-enriched air to the fuel gas in the gas mixing device is controlled, and the explosion limit is avoided.
Preferably, the oxygen-enriched air input port of the gas mixing device is connected with a flow regulating device.
Preferably, the flow regulating device is a regulating valve.
Preferably, the system also comprises an oxygen-enriched air flow meter and a fuel gas flow meter, wherein the oxygen-enriched air flow meter is communicated with the oxygen-enriched air input port, and the fuel gas flow meter is communicated with the fuel gas input port.
Preferably, the device also comprises a control device, a flow detection module and a flow adjusting device, wherein the oxygen-enriched air input port and the fuel gas input port are both connected with the flow detection module, the oxygen-enriched air input port or the fuel gas input port is connected with the flow adjusting device, the signal output end of each flow detection module is connected with the signal input end of the control device, and the signal output end of the control device is connected with the flow adjusting device. The control device can monitor the flow of the fuel gas and the flow of the oxygen-enriched air in real time, and adjust the flow of the oxygen-enriched air or the fuel gas through the flow adjusting device, so that the volume ratio of the oxygen-enriched air to the fuel gas is prevented from reaching an explosion limit.
Preferably, the device further comprises an alarm, and the signal output end of the control device is connected with the alarm.
Compared with the prior art, the utility model discloses the beneficial effect who has is:
this gas of gas kiln oxygen boosting combustion-supporting system and oxygen boosting air mix earlier in gas mixing arrangement, then send the gas after mixing into the combustor in the burning, solved the air and directly blown in the kiln, the problem of the temperature reduction in the messenger's kiln, can also avoid the air to spout into in the kiln, cause the influence to the burning of fuel in the kiln, and the content of nitrogen gas is low in the oxygen boosting air, the volume of discharged nitrogen gas has been reduced, avoid nitrogen gas discharge to take away a large amount of heats, guarantee the temperature stability in the kiln, and make things convenient for the temperature in the accurate control kiln.
Drawings
FIG. 1 is a schematic structural diagram of an oxygen-enriched combustion-supporting system of a gas furnace.
In the figure: 1. an oxygen-enriched air input pipe 2, a regulating valve 3, an actuator 4, an oxygen-enriched air flow meter 5, a fuel gas flow meter 6, an injector 7, a burner 8, a kiln 9 and a fuel gas pipe.
Detailed Description
The present invention is further described with reference to specific embodiments, however, it will be understood by those skilled in the art that the detailed description given herein with respect to the drawings is for better explanation and that the present invention is necessarily to be construed as limited to those embodiments, and equivalents or common means thereof will not be described in detail but will fall within the scope of the present application.
Fig. 1 is a preferred embodiment of the present invention, and the present invention will be further explained with reference to fig. 1.
An oxygen-enriched combustion-supporting system of a gas kiln comprises a gas mixing device communicated with a gas inlet of a combustor 7, wherein an oxygen-enriched air input port and a gas input port are arranged on the gas mixing device. This gas of gas furnace oxygen boosting combustion system and oxygen enriched air mix earlier in gas mixing arrangement, then gas after will mixing sends into combustor 7 internal combustion, it directly blows in the kiln 8 to have solved the air, make the problem of temperature reduction in the kiln 8, can also avoid the air to spout into in the kiln 8, the burning of gas causes the influence in the kiln 8, and the content of nitrogen gas is low in the oxygen enriched air, the volume of exhaust nitrogen gas has been reduced, avoid nitrogen gas discharge to take away a large amount of heats, guarantee the temperature stability in the kiln 8, and make things convenient for the temperature in the accurate control kiln 8. The oxygen-enriched combustion-supporting system of the gas kiln is suitable for all gas industrial kilns.
Specifically, the method comprises the following steps: as shown in fig. 1: this gas kiln oxygen boosting combustion-supporting system still includes oxygen-enriched air input tube 1 and gas pipe 9, and in this embodiment, the gas mixing device is sprayer 6, and the medium export of sprayer 6 is linked together through the air inlet of conveyer pipe with combustor 7, and the gas outlet of gas pipe 9 is linked together with the high-pressure medium entry of sprayer 6, and the gas outlet of oxygen-enriched air input tube 1 is linked together with the low pressure medium entry of sprayer 6. The external gas of input port of gas pipe 9, oxygen making equipment is connected to the air inlet of oxygen-enriched air input pipe 1, and in this embodiment, oxygen making equipment adopts oxygen-enriched membrane method system oxygen, can also have other current oxygen making equipment system oxygen. The ejector 6 is a venturi gas ejector.
This combustion-supporting system of gas kiln oxygen boosting still includes flow measurement module and flow control module, and wherein flow measurement module includes oxygen boosting air flow meter 4 and gas flowmeter 5, and flow control module is governing valve 2, and oxygen boosting air flow meter 4 is installed on the empty input tube of oxygen boosting 1 to the flow of oxygen boosting air in the real-time supervision oxygen boosting air input tube 1, gas flowmeter 5 is installed on gas pipe 9, and the flow of the interior gas of real-time supervision gas pipe 9. The gas pipe 9 or the oxygen-enriched air input pipe 1 is provided with an adjusting valve 2, and in the embodiment, the oxygen-enriched air input pipe 1 is provided with the adjusting valve 2.
This combustion-supporting system of gas kiln oxygen boosting can also only set up oxygen boosting air flowmeter 4 and gas flowmeter 5, and oxygen boosting air input pipe 1 and gas pipe 9 all pass through stop valve control break-make, and when the flow of oxygen boosting air input pipe 1 or the flow of gas pipe 9 take place unusually, close gas pipe 9 through the stop valve can.
This combustion-supporting system of gas kiln oxygen boosting still includes controlling means and alarm, and in this embodiment, controlling means is the PLC controller, and oxygen boosting air flow meter 4 and gas flowmeter 5's signal output part all links to each other with the signal input part of PLC controller, and the signal output part of PLC controller links to each other with the signal input part of the executor 3 of governing valve 2, and the signal output part of PLC controller still links to each other with the alarm.
The working process of the oxygen-enriched combustion-supporting system of the gas kiln comprises the following steps: the gas is sent into the ejector 6, and the oxygen-enriched air is sucked through the ejector 6, the oxygen-enriched air is micro-positive pressure, the pressure of the oxygen-enriched air is less than or equal to 1kPa, the air quantity of the oxygen-enriched air cannot influence combustion, and the original combustion environment in the kiln 8 cannot be interfered or influenced. The oxygen concentration in the oxygen-enriched air is stabilized at 30% +/-2%, and the air quantity of the oxygen-enriched air generated by a single oxygen-enriched membrane is 30m 3 And/h, premixing the fuel gas and the oxygen-enriched air in the ejector 6, wherein the volume ratio of the fuel gas to the oxygen-enriched air is 1:1.
The premixed fuel gas and the oxygen-enriched air with the concentration of 30% are sprayed into the kiln, the purpose of oxygen-enriched local combustion supporting is achieved, and compared with the mode that the air is directly sprayed to the position close to a nozzle, the spraying amount of the oxygen-enriched air is reduced, the emission of nitrogen is further reduced, and the loss of heat is greatly reduced.
The PLC monitors the flow of the oxygen-enriched air in real time through the oxygen-enriched air flow meter 4, monitors the flow of the fuel gas in real time through the fuel gas flow meter 5, can ensure that the volume ratio of the fuel gas and the oxygen-enriched air in the ejector 6 is 1:1, and avoids the proportion of the fuel gas and the oxygen-enriched air from reaching the explosion limit. And the automatic shutdown of the oxygen-enriched air can be realized, the alarm is given, and the explosion is avoided.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (6)
1. An oxygen-enriched combustion-supporting system of a gas kiln is characterized in that: comprises a gas mixing device communicated with a gas inlet of a burner (7), wherein the gas mixing device is provided with an oxygen-enriched air inlet and a fuel gas inlet;
the gas mixing device comprises an ejector (6), a medium outlet of the ejector (6) is communicated with a gas inlet of a combustor (7), a high-pressure medium inlet of the ejector (6) is the gas input port, and a low-pressure medium inlet of the ejector (6) is the oxygen-enriched air input port; mixing fuel gas and oxygen-enriched air in a gas mixing device, and then feeding the mixed gas into a combustor for combustion;
the flow regulating device comprises a control device, a flow detection module and a flow regulating device, wherein the oxygen-enriched air input port and the fuel gas input port are both connected with the flow detection module, the oxygen-enriched air input port or the fuel gas input port is connected with the flow regulating device, the signal output end of each flow detection module is connected with the signal input end of the control device, and the signal output end of the control device is connected with the flow regulating device.
2. An oxygen-enriched combustion-supporting system of a gas-fired kiln as claimed in claim 1, characterized in that: the gas mixing device is characterized by also comprising a flow regulating device, wherein the oxygen-enriched air input port or the fuel gas input port of the gas mixing device is connected with the flow regulating device.
3. An oxygen-enriched combustion-supporting system of a gas-fired kiln as claimed in claim 2, characterized in that: the oxygen-enriched air input port of the gas mixing device is connected with a flow regulating device.
4. An oxygen-enriched combustion-supporting system of a gas-fired kiln as claimed in claim 2 or 3, characterized in that: the flow regulating device is a regulating valve (2).
5. An oxygen-enriched combustion-supporting system of a gas-fired kiln as claimed in claim 1, 2 or 3, characterized in that: the oxygen-enriched air flow meter is characterized by further comprising an oxygen-enriched air flow meter (4) and a fuel gas flow meter (5), wherein the oxygen-enriched air flow meter (4) is communicated with the oxygen-enriched air input port, and the fuel gas flow meter (5) is communicated with the fuel gas input port.
6. An oxygen-enriched combustion-supporting system of a gas-fired kiln as claimed in claim 1, characterized in that: the alarm device is characterized by further comprising an alarm device, and the signal output end of the control device is connected with the alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221618574.1U CN218455235U (en) | 2022-06-27 | 2022-06-27 | Oxygen-enriched combustion-supporting system of gas kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221618574.1U CN218455235U (en) | 2022-06-27 | 2022-06-27 | Oxygen-enriched combustion-supporting system of gas kiln |
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| Publication Number | Publication Date |
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| CN218455235U true CN218455235U (en) | 2023-02-07 |
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| CN202221618574.1U Active CN218455235U (en) | 2022-06-27 | 2022-06-27 | Oxygen-enriched combustion-supporting system of gas kiln |
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| CN (1) | CN218455235U (en) |
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- 2022-06-27 CN CN202221618574.1U patent/CN218455235U/en active Active
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