CN217503637U - Gas combustion system of oxygen-enriched combustion-supporting air - Google Patents
Gas combustion system of oxygen-enriched combustion-supporting air Download PDFInfo
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- CN217503637U CN217503637U CN202221224256.7U CN202221224256U CN217503637U CN 217503637 U CN217503637 U CN 217503637U CN 202221224256 U CN202221224256 U CN 202221224256U CN 217503637 U CN217503637 U CN 217503637U
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- flue gas
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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 gas combustion system of oxygen-enriched combustion-supporting air, including the oxygen-enriched combustion-supporting air supply system, the gas combustion device, flue gas reflux system, the heating chamber, wherein the air inlet of the oxygen-enriched combustion-supporting air supply system communicates with the atmosphere, the gas outlet of the oxygen-enriched combustion-supporting air supply system and the gas supply system all link to each other with the gas combustion device, the gas combustion device is fixed to be set up in one end of heating chamber, the other end of heating chamber is equipped with the flue gas discharge port, the air inlet of flue gas reflux system links to each other with the flue gas discharge port, the exhaust outlet of flue gas reflux system links to each other with the gas combustion device; the flue gas reflux system consists of a flue gas condensing device and a flue gas reflux control valve, and the flue gas reflux control valve is connected in series with a flue gas outlet of the flue gas condensing device. The gas combustion system of the oxygen-enriched combustion-supporting air solves the problem that the combustion temperature of the oxygen-enriched combustion is too high and difficult to control in the prior art while the condition of nitrogen oxide combustion emission is reduced.
Description
Technical Field
The utility model particularly relates to a gas combustion technology field, concretely relates to gas combustion system of combustion-supporting wind of oxygen boosting.
Background
The oxygen-enriched combustion is a high-efficiency energy-saving combustion technology which separates part of nitrogen in air by adopting a technical means and enables air with oxygen content higher than 20.947% to participate in combustion as combustion-supporting air. The technology is applied to the fields of glass industry, metallurgical industry and heat energy engineering. However, oxygen-enriched air combustion can result in over-high combustion temperature and greatly increase the generation of pollutant nitrogen oxides.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is to provide a gas combustion system of oxygen-enriched combustion-supporting air for overcoming the defects of the prior art.
The utility model aims to overcome the defects of the prior art, the utility model provides a gas combustion system of oxygen-enriched combustion-supporting air, including the oxygen-enriched combustion-supporting air supply system, the gas combustion device, the flue gas reflux system, the heating chamber, wherein the air inlet of the oxygen-enriched combustion-supporting air supply system communicates with each other with the atmosphere, the gas outlet of the oxygen-enriched combustion-supporting air supply system and the gas supply system are both connected with the gas combustion device, the gas combustion device is fixedly arranged at one end of the heating chamber, the other end of the heating chamber is provided with a flue gas discharge port, the air inlet of the flue gas reflux system is connected with the flue gas discharge port, the exhaust outlet of the flue gas reflux system is connected with the gas combustion device; the flue gas reflux system consists of a flue gas condensing device and a flue gas reflux control valve, and the flue gas reflux control valve is connected in series with a flue gas outlet of the flue gas condensing device.
The utility model discloses further provide a pair of gas combustion system of combustion-supporting wind of oxygen boosting, its combustion-supporting wind feed system of oxygen boosting is by the fan, nitrogen gas separator, oxygen boosting air voltage regulator device is constituteed, the mouth that blows of fan links to each other with nitrogen gas separator's entry, nitrogen gas separator's nitrogen gas separation discharge port and atmosphere intercommunication, nitrogen gas separator's oxygen boosting air discharge port links to each other with oxygen boosting air voltage regulator device's air inlet, oxygen boosting air voltage regulator device's gas outlet links to each other with gas combustion device.
The utility model discloses a pair of gas combustion system of combustion-supporting wind of oxygen boosting, its gas supply system include gas pipeline, have concatenated the electromagnetism trip valve on the gas pipeline, still have concatenated the gas butterfly valve that is used for controlling the gas flow on being located the connecting tube of the outlet side of electromagnetism trip valve.
The utility model discloses further provide a gas combustion system of combustion-supporting wind of oxygen boosting, the inside flue gas passageway that sets up of its flue gas condensing equipment is spiral flue gas passageway or the circuitous flue gas passageway of continuous U type, is located and has seted up cooling medium on flue gas outlet and the lateral wall of entry of flue gas condensing equipment respectively and has inserted the mouth and connect the export.
The utility model has the advantages that: the utility model discloses a gas combustion system of combustion-supporting wind of oxygen boosting has solved the problem that the oxygen boosting burning combustion temperature was too high difficult to control under the prior art when reducing the condition that the nitrogen oxide burning discharged.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a block diagram of embodiment 1 of the present invention;
fig. 2 is a schematic view of the overall structure of embodiment 1 of the present invention;
fig. 3 is a block diagram of embodiment 2 of the present invention;
in the figure: 110. an oxygen-enriched combustion-supporting air supply system; 111. a fan; 112. a nitrogen separation device; 113. an oxygen-enriched air pressure stabilizer; 120. a gas supply system; 121. an electromagnetic cut-off valve; 122. a gas butterfly valve; 130. a gas combustion device; 140. a heating chamber; 141. a flue gas outlet; 150. a flue gas recirculation system; 151. a flue gas condensing unit; 152. flue gas backward flow control valve.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the following detailed description, it being understood that the preferred embodiments described herein are intended to illustrate and explain the present invention, and are not intended to limit the present invention.
As shown in fig. 1 and fig. 2, the gas combustion system of oxygen-rich combustion-supporting air includes an oxygen-rich combustion-supporting air supply system 110, a gas supply system 120, a gas combustion device 130, a flue gas recirculation system 150, and a heating chamber 140, wherein an air inlet of the oxygen-rich combustion-supporting air supply system 110 is communicated with the atmosphere, an air outlet of the oxygen-rich combustion-supporting air supply system 110 and the gas supply system 120 are both connected to the gas combustion device 130, the gas combustion device 130 is fixedly disposed at one end of the heating chamber 140, a flue gas discharge port 141 is disposed at the other end of the heating chamber 140, an air inlet of the flue gas recirculation system 150 is connected to the flue gas discharge port 141, and an air outlet of the flue gas recirculation system 150 is connected to the gas combustion device 130; the flue gas reflux system 150 is composed of a flue gas condensing device 151 and a flue gas reflux control valve 152, and the flue gas reflux control valve 152 is connected in series with a flue gas outlet of the flue gas condensing device 151.
Wherein, the oxygen-enriched combustion-supporting air supply system 110 is used for supplying oxygen-enriched combustion-supporting air to the gas combustion device 130; the gas supply system 120 is configured to supply gas to the gas combustion device 130; the flue gas recirculation system 150 is used for recirculating and cooling part of the flue gas exhausted from the heating chamber 140 and supplying the cooled flue gas to the gas combustion device 130, and the flue gas recirculation system 150 is provided with a flue gas recirculation control valve 152 for controlling the recirculation amount of the flue gas.
The oxygen-enriched combustion-supporting air supply system 110 is composed of a fan 111, a nitrogen separation device 112 and an oxygen-enriched air pressure stabilizing device 113, wherein a blowing port of the fan 111 is connected with an inlet of the nitrogen separation device 112, a nitrogen separation discharge port of the nitrogen separation device 112 is communicated with the atmosphere, an oxygen-enriched air discharge port of the nitrogen separation device 112 is connected with an air inlet of the oxygen-enriched air pressure stabilizing device 113, and an air outlet of the oxygen-enriched air pressure stabilizing device 113 is connected with a gas combustion device 130. The nitrogen separation device 112 is a common membrane separation air separation nitrogen making device in the market, and the fan 111 is provided with an adjustable strong fan with blowing pressure of 0.6-1.2 Mpa.
The gas supply system 120 includes a gas delivery pipe, an electromagnetic cut-off valve 121 is connected in series to the gas delivery pipe, and a gas butterfly valve 122 for controlling gas flow is connected in series to a connection pipe located at an outlet side of the electromagnetic cut-off valve 121.
The flue gas passageway arranged in the flue gas condensing device 151 is a spiral flue gas passageway or a continuous U-shaped roundabout flue gas passageway, and a cooling medium inlet and a cooling medium outlet are respectively arranged on the side walls of the flue gas outlet and the flue gas inlet of the flue gas condensing device 151. In actual work progress, can have more and need install air guide fan additional at flue gas condensing equipment 151's flue gas entry, can be fine with the leading-in flue gas condensing equipment 151 of flue gas in the flue gas discharge port 141, because the windage of the flue gas condensing equipment 151 of different installation models and structure is inequality, in order to reach the leading-in effect of good flue gas, propose to install air guide fan additional when necessary. The cooling medium is tap water in a room temperature environment.
Example 2
As shown in fig. 3, the difference between this embodiment and embodiment 1 is that an exhaust outlet of the flue gas recirculation system 150 is connected to the oxygen-enriched combustion-supporting air supply system 110, the cooled cold flue gas is firstly added to the oxygen-enriched combustion-supporting air supply system 110 to mix with the oxygen-enriched combustion-supporting air, and then enters the gas combustion device 130 to participate in combustion, and the flue gas recirculation system 150 is provided with a flue gas recirculation control valve 152 for controlling the recirculation amount of the flue gas.
Generally speaking, the oxygen-enriched combustion can increase the total combustion temperature, so that the generation of temperature type nitrogen oxides is increased, and because the radiation heat exchange effect of carbon dioxide is better than that of nitrogen, the flame temperature reduction degree is high, the combustion temperature can be greatly reduced under the condition of adding smoke with less nitrogen components, and the generation of nitrogen oxides can be reduced while the oxygen-enriched combustion is realized.
The blower of the oxygen-enriched combustion-supporting air supply system 110 supplies air to the nitrogen separation device 112, the air separates nitrogen in the nitrogen separation device 112, and the remaining oxygen-enriched air is subjected to pressure stabilization by the oxygen-enriched air pressure stabilization device 113 and then supplied to the gas combustion device 130.
The gas is supplied to the gas burner 130 through the electromagnetic shut-off valve 121 and the gas butterfly valve 122 of the gas supply system 120, the electromagnetic shut-off valve 121 controls the on/off of the gas, and the opening angle of the gas butterfly valve 122 controls the gas flow rate.
The flue gas is led out from the flue gas outlet 141 of the heating chamber 140, cooled in the flue gas condensing device 151, and the cooled flue gas is supplied to the combustion device 130, after condensed water is separated out from the flue gas, the main component is carbon dioxide, and the return flow of the flue gas is controlled by controlling the opening degree of the flue gas return flow control valve 152.
The combustion of the fuel gas, oxygen-enriched air, carbon dioxide is accomplished in the heating chamber 140 via the combustion device 130.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Further, the steps of the methods in the technical solution of the present application may be reversed, and the sequence may be changed while still falling within the scope of the present invention. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (4)
1. A gas combustion system of oxygen-enriched combustion-supporting air is characterized by comprising an oxygen-enriched combustion-supporting air supply system (110), a gas supply system (120), a gas combustion device (130), a flue gas reflux system (150) and a heating chamber (140), wherein an air inlet of the oxygen-enriched combustion-supporting air supply system (110) is communicated with the atmosphere, an air outlet of the oxygen-enriched combustion-supporting air supply system (110) and the gas supply system (120) are connected with the gas combustion device (130), the gas combustion device (130) is fixedly arranged at one end of the heating chamber (140), a flue gas outlet (141) is formed in the other end of the heating chamber (140), an air inlet of the flue gas reflux system (150) is connected with the flue gas outlet (141), and an air outlet of the flue gas reflux system (150) is connected with the gas combustion device (130); the flue gas reflux system (150) is composed of a flue gas condensing device (151) and a flue gas reflux control valve (152), and the flue gas reflux control valve (152) is connected to a flue gas outlet of the flue gas condensing device (151) in series.
2. An oxygen-enriched combustion-supporting air gas combustion system as claimed in claim 1, wherein the oxygen-enriched combustion-supporting air supply system (110) is composed of a blower (111), a nitrogen separation device (112) and an oxygen-enriched air pressure stabilizer (113), the blowing port of the blower (111) is connected with the inlet of the nitrogen separation device (112), the nitrogen separation discharge port of the nitrogen separation device (112) is communicated with the atmosphere, the oxygen-enriched air discharge port of the nitrogen separation device (112) is connected with the air inlet of the oxygen-enriched air pressure stabilizer (113), and the air outlet of the oxygen-enriched air pressure stabilizer (113) is connected with the gas combustion device (130).
3. An oxygen-enriched combustion-supporting air gas combustion system as claimed in claim 1 or 2, wherein the gas supply system (120) comprises a gas delivery pipeline, an electromagnetic cut-off valve (121) is connected in series on the gas delivery pipeline, and a gas butterfly valve (122) for controlling gas flow is connected in series on a connecting pipeline positioned at the outlet side of the electromagnetic cut-off valve (121).
4. The gas combustion system of oxygen-enriched combustion-supporting air according to claim 3, wherein the flue gas passageway arranged inside the flue gas condensing device (151) is a spiral flue gas passageway or a continuous U-shaped roundabout flue gas passageway, and the side walls of the flue gas outlet and the flue gas inlet of the flue gas condensing device (151) are respectively provided with a cooling medium inlet and a cooling medium outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221224256.7U CN217503637U (en) | 2022-05-19 | 2022-05-19 | Gas combustion system of oxygen-enriched combustion-supporting air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221224256.7U CN217503637U (en) | 2022-05-19 | 2022-05-19 | Gas combustion system of oxygen-enriched combustion-supporting air |
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| Publication Number | Publication Date |
|---|---|
| CN217503637U true CN217503637U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221224256.7U Active CN217503637U (en) | 2022-05-19 | 2022-05-19 | Gas combustion system of oxygen-enriched combustion-supporting air |
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| Country | Link |
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| CN (1) | CN217503637U (en) |
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- 2022-05-19 CN CN202221224256.7U patent/CN217503637U/en active Active
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