CN218510871U - Low NO in cracking furnace x Burner apparatus - Google Patents
Low NO in cracking furnace x Burner apparatus Download PDFInfo
- Publication number
- CN218510871U CN218510871U CN202222594717.6U CN202222594717U CN218510871U CN 218510871 U CN218510871 U CN 218510871U CN 202222594717 U CN202222594717 U CN 202222594717U CN 218510871 U CN218510871 U CN 218510871U
- Authority
- CN
- China
- Prior art keywords
- gas
- burning
- burner
- fuel
- coke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of chemical industry energy environmental protection, a low NO in cracking furnace is disclosed X The burner comprises a burner block, a burnt gas inlet pipe and a fuel inlet pipe, wherein the burner block is provided with a gas flow channel communicated with a hearth of the cracking furnace, the burner block is fixed on a furnace body of the cracking furnace, combustion-supporting gas enters the hearth through the gas flow channel, and burnt gas is burntThe two ends of the gas inlet pipe are respectively communicated with a coke-burning gas source and a gas flow passage, and the two ends of the fuel gas inlet pipe are respectively communicated with a fuel gas source and a hearth. The burning gas, the combustion-supporting gas and the fuel gas are mixed and burnt in the hearth, so that combustible particles in the burning gas are burnt, and the effect of reducing the particles in the burning gas is achieved.
Description
Technical Field
The utility model relates to a chemical industry energy environmental protection technical field especially relates to a low NO in pyrolysis furnace X A burner.
Background
The cracking furnace is a core device for producing ethylene, in actual work, coking can occur in a furnace tube of the cracking furnace to form coke scale along with the increase of the operation working time of the cracking furnace, if the coke scale is not processed in time, the energy consumption and the raw material consumption of the cracking furnace can be increased, the service life of the cracking furnace and the operation cycle of the cracking furnace are shortened, and therefore, the coke is required to be burnt.
In the process of coking treatment, the cracking furnace generates a large amount of coking gas which mainly comprises pollutants such as steam, particulate matters (coke powder, rust and the like), CO2 and the like, if the coking gas is directly discharged into the atmosphere, the coking gas is very unfavorable for environmental protection, and the coking gas (about 100-400 ℃) contains a large amount of waste heat, and if the coking gas is directly discharged into the atmosphere, the waste heat cannot be utilized.
In the prior art, the coke-burning gas is generally introduced into a coke-burning tank, particles in the coke-burning gas are separated in the coke-burning tank, and then the coke-burning gas is discharged into the atmosphere or introduced into a hearth of a cracking furnace, so that the treatment of the particles in the coke-burning gas and the utilization of waste heat are realized.
However, the coke-burning tank often cannot completely separate out the particles in the coke-burning gas, some particles still remain in the hearth of the cracking furnace and are incompletely combusted, the problem of environmental pollution still exists when the residual particles are discharged into the atmosphere from the hearth of the cracking furnace, and the problem of ash deposition on the hearth of the cracking furnace is easily caused by the residual particles.
Therefore, how to reduce the particulate matters in the coke-burning gas is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low NO in cracking furnace X The combustor can burn combustible particles in the burnt gas, and then the effect of reducing the particles in the burnt gas is achieved.
To achieve the purpose, the utility model adopts the following technical proposal:
low NO in cracking furnace X The burner and the cracking furnace comprise a furnace body, the furnace body is provided with a hearth, and low NO is contained in the cracking furnace X The burner includes:
the burner block can be fixed on the furnace body, the burner block is provided with a gas flow channel, the gas flow channel can be communicated with the hearth, and combustion-supporting gas can enter the hearth through the gas flow channel;
one end of the coke-burning gas inlet pipe is used for being communicated with a coke-burning gas source, and the other end of the coke-burning gas inlet pipe is communicated with the gas flow channel;
the one end of fuel intake pipe is used for with the fuel gas source intercommunication, the other end of fuel intake pipe can communicate with furnace.
Optionally, the other end of the coke-burning gas inlet pipe is provided with a coke-burning gas nozzle.
Optionally, the gas flow channel has an inlet end through which combustion-supporting gas enters the gas flow channel and an outlet end between which the char-combusting gas nozzle is disposed, the outlet end being disposed in the furnace.
Optionally, the other end of the fuel inlet pipe is provided with a fuel nozzle, and the fuel nozzle is positioned in the hearth.
Alternatively, the number of the fuel injectors is plural, and fuel gas injected from the plural fuel injectors is combusted to form combustion flames.
Optionally, a plurality of fuel nozzles are arranged around the coke-burning gas nozzle, and the coke-burning gas sprayed from the coke-burning gas nozzle can enter a high-temperature combustion area of the combustion flame.
Optionally, the burner further comprises a wind box, the wind box is communicated with the gas flow passage, and the wind box is used for introducing combustion-supporting gas into the gas flow passage.
Optionally, the coke-burning gas inlet pipe penetrates through the windbox.
Has the advantages that:
the utility model provides a low NO in cracking furnace X The combustor, including can fixing the burner block on the pyrolysis furnace body, set up gas flow channel on the burner block, combustion-supporting gas can get into the furnace of pyrolysis furnace through gas flow channel, the one end and the burnt gas source intercommunication of burnt gas intake pipe, the other end and the gas flow channel intercommunication of burnt gas intake pipe, make burnt gas can loop through burnt gas intake pipe and gas flow channel and get into the furnace of pyrolysis furnace, in gas flow channel, combustion-supporting gas and burnt gas mixture, in the furnace of pyrolysis furnace, the combustion-supporting gas that mixes with burnt gas mixes and burns with the fuel gas, make the combustible particles burning in the burnt gas, and then reached the effect that reduces combustible particles in the burnt gas.
Drawings
Fig. 1 is a schematic structural diagram of a burner provided by the present invention;
fig. 2 is a schematic structural diagram of a burner according to the present invention.
In the figure:
100. a furnace body; 110. a hearth; 200. a burner block; 210. a gas flow channel; 211. an air inlet end; 212. an air outlet end; 300. a coke-burning gas inlet pipe; 310. a scorching gas nozzle; 400. a fuel intake pipe; 410. a fuel injector; 500. an air box; 600. an air regulator.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
This example provides a low NO in the cracking furnace X The combustor can burn combustible particles in the coke-burning gas, so that the effect of reducing the particles in the coke-burning gas is achieved, and NO of the combustor can be reduced X The discharge of (2) is beneficial to environmental protection.
Specifically, as shown in fig. 1 and 2, the cracking furnace includes a furnace body 100, the furnace body 100 is provided with a hearth 110, and a low NO in the cracking furnace X The combustor includes burner block 200, burnt gas intake pipe 300 and fuel intake pipe 400, and burner block 200 can be fixed in on furnace body 100, and burner block 200 is equipped with gas runner 210, and gas runner 210 can communicate with furnace 110, combustion-supportingGas can get into furnace 110 through gas runner 210, the one end of burning gas intake pipe 300 be used for with burning gas source intercommunication, the other end and the gas runner 210 intercommunication of burning gas intake pipe 300, the one end of fuel intake pipe 400 be used for with fuel gas source intercommunication, the other end of fuel intake pipe 400 can communicate with furnace 110.
A low NO in the cracking furnace X The combustor is provided with the burnt gas intake pipe 300 with burnt gas source intercommunication, and set up the gas flow channel 210 that can let in combustion-supporting gas to furnace 110 on burner block 200, make the one end and the burnt gas source intercommunication of burnt gas intake pipe 300, the other end and the gas flow channel 210 intercommunication of burnt gas intake pipe 300, in gas flow channel 210, combustion-supporting gas and burnt gas mix, in furnace 110, combustion-supporting gas and fuel gas mix and burn, make the combustible particles burning in the burnt gas, and then reached the effect that reduces combustible particles in the burnt gas. Meanwhile, the coke-burning gas is introduced into the hearth 110 of the cracking furnace, so that the effect of recycling the waste heat of the coke-burning gas is achieved, and the full utilization of energy is realized. It should be noted that the coke-burning gas source may be a coke-burning tank, that is, a furnace tube of the cracking furnace is communicated with the coke-burning tank, and the coke-burning tank is communicated with the coke-burning gas inlet tube 300; the coke-burning gas source can also be other coke-burning gas processing units.
Alternatively, as shown in fig. 1 and 2, the other end of the coke-burning gas inlet pipe 300 is provided with a coke-burning gas nozzle 310, and the coke-burning gas is injected into the gas flow passage 210 through the coke-burning gas nozzle 310, so that combustible particulate matters in the coke-burning gas can enter the gas flow passage 210 relatively dispersedly.
Further, as shown in fig. 1 and fig. 2, the gas flow channel 210 has an air inlet end 211 and an air outlet end 212, the combustion-supporting gas enters the gas flow channel 210 through the air inlet end 211, the char-combusting gas nozzle 310 is disposed at the air inlet end 211 or between the air inlet end 211 and the air outlet end 212, and the air outlet end 212 is disposed in the furnace 110, so as to extend a flow tube pass of the char-combusting gas in the gas flow channel 210, improve the mixing uniformity of the char-combusting gas and the combustion-supporting gas in the gas flow channel 210, further enable combustible particles in the char-combusting gas entering the furnace 110 to be more uniformly and sufficiently combusted, improve the capability of the combustor for treating combustible particles in the char-combusting gas, and achieve the effect of further reducing the combustible particles in the char-combusting gas. Of course, in other embodiments, the char-combusting gas nozzle 310 may be disposed at the gas outlet end 212, depending on the actual use situation.
Alternatively, as shown in fig. 1 and 2, the other end of the fuel inlet pipe 400 is provided with a fuel injector 410, the fuel injector 410 is located in the furnace 110, and the fuel gas is injected into the furnace 110 through the fuel injector 410.
Further, as shown in fig. 1 and 2, the number of the fuel injectors 410 is plural, and fuel gas injected from the plural fuel injectors 410 is combusted to form combustion flames.
Preferably, as shown in fig. 1 and fig. 2, a plurality of fuel nozzle 410 encircle burnt gas shower nozzle 310 and set up, make the burnt gas that is located a plurality of fuel nozzle 410 by burnt gas shower nozzle 310 spun, and the injection direction of fuel nozzle 410 and the injection direction phase-match of burnt gas shower nozzle 310, and then can get into burning flame's high temperature combustion zone by burnt gas shower nozzle 310 spun burnt gas, be favorable to burning the abundant burning of combustible particle thing in the gas, and also be favorable to cooling high temperature combustion zone, and then reach the effect that reduces combustor nitrogen oxide emission, be favorable to the environmental protection. It should be noted that, the above-mentioned matching between the injection direction of the fuel nozzle 410 and the injection direction of the coke-burning gas nozzle 310 means that the injection direction of the fuel nozzle 410 and the injection direction of the coke-burning gas nozzle 310 are arranged at an acute angle, so that the coke-burning gas sprayed from the coke-burning gas nozzle 310 can be sprayed into a high-temperature combustion area of a combustion flame, and the specific angle between the injection direction of the fuel nozzle 410 and the injection direction of the coke-burning gas nozzle 310 can be determined by Computational Fluid Dynamics (CFD) simulation. In addition, in the present embodiment, the injection direction of the coke-burning gas injector 310 is parallel to the axis of the gas channel 210, and in other embodiments, if the injection direction of the coke-burning gas injector 310 is not parallel to the axis of the gas channel 210, the coke-burning gas injector 310 may be disposed at the gas outlet end 212 of the gas channel 210.
Further, as shown in fig. 1 and fig. 2, the number of the coke-burning gas nozzles 310 is plural, so as to increase the introduction amount of the coke-burning gas in the high-temperature combustion zone, improve the efficiency of treating combustible particulate matters in the coke-burning gas, and further reduce the temperature of the high-temperature combustion zone, thereby further reducing the discharge amount of nitrogen oxides of the combustor.
Optionally, as shown in fig. 1 and fig. 2, the burner further includes a windbox 500, the windbox 500 is communicated with the gas flow channel 210, the windbox 500 is used for introducing combustion-supporting gas into the gas flow channel 210, further, the burner further includes a wind regulator 600, the wind regulator 600 is communicated with the windbox 500, and the wind regulator 600 is used for introducing combustion-supporting gas into the windbox 500.
Optionally, as shown in fig. 1 and fig. 2, the coke-burning gas inlet pipe 300 is inserted into the wind box 500, so that the overall occupied space of the burner is reduced, the operation of inserting the coke-burning gas inlet pipe 300 into the burner block 200 is omitted, the production process of the burner is simplified, and the production efficiency of the burner is improved.
It should be noted that the arrangement and injection direction of the fuel injector 410, the arrangement and injection direction of the char-combusting gas injector 310, and the design of the gas flow passages 210 described above may be determined by Computational Fluid Dynamics (CFD) simulations.
It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. Low NO in cracking furnace X A burner, the cracking furnace comprises a furnace body (100), the furnace body (100) is provided with a hearth (110), and the burner is characterized in that the low NO in the cracking furnace X The burner includes:
the burner block (200) can be fixed on the furnace body (100), the burner block (200) is provided with a gas flow channel (210), the gas flow channel (210) can be communicated with the hearth (110), and combustion-supporting gas can enter the hearth (110) through the gas flow channel (210);
the device comprises a gas channel (210), a gas inlet pipe (300) for burning gas, a gas outlet pipe (300) for burning gas and a gas outlet pipe (300) for burning gas, wherein one end of the gas inlet pipe (300) for burning gas is communicated with a gas source for burning gas, and the other end of the gas inlet pipe (300) for burning gas is communicated with the gas channel;
the furnace comprises a fuel inlet pipe (400), one end of the fuel inlet pipe (400) is used for being communicated with a fuel gas source, and the other end of the fuel inlet pipe (400) can be communicated with the furnace chamber (110).
2. A low NO in cracking furnace according to claim 1 X The burner is characterized in that the other end of the coke-burning gas inlet pipe (300) is provided with a coke-burning gas nozzle (310).
3. A low NO in the cracking furnace according to claim 2 X The burner is characterized in that the gas flow channel (210) is provided with an air inlet end (211) and an air outlet end (212), the combustion-supporting gas enters the gas flow channel (210) through the air inlet end (211), the coke-burning gas nozzle (310) is arranged at the air inlet end (211) or between the air inlet end (211) and the air outlet end (212), and the air outlet end (212) is arranged in the hearth (110).
4. The cracking furnace of claim 3, wherein the content of NO in the cracking furnace is low X The burner is characterized in that the other end of the fuel inlet pipe (400) is provided with a fuel nozzle (410), and the fuel nozzle (410) is positioned in the hearth (110).
5. A low NO in the cracking furnace according to claim 4 X The burner is characterized in that the number of the fuel nozzles (410) is multiple, and fuel gas sprayed by the fuel nozzles (410) is combusted to form combustion flame.
6. A low NO in the cracking furnace according to claim 5 X Burner, characterized in that a plurality of said fuel injector (410) ringsThe burning gas nozzle is arranged around the burning gas nozzle (310), and the burning gas sprayed by the burning gas nozzle (310) can enter a high-temperature burning area of the burning flame.
7. A pyrolysis furnace as claimed in any one of claims 1 to 6 having a low NO content X The burner is characterized by further comprising a wind box (500), wherein the wind box (500) is communicated with the gas flow channel (210), and the wind box (500) is used for introducing the combustion-supporting gas into the gas flow channel (210).
8. A low NO in cracking furnace according to claim 7 X The burner is characterized in that the coke-burning gas inlet pipe (300) penetrates through the air box (500).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222594717.6U CN218510871U (en) | 2022-09-29 | 2022-09-29 | Low NO in cracking furnace x Burner apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222594717.6U CN218510871U (en) | 2022-09-29 | 2022-09-29 | Low NO in cracking furnace x Burner apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218510871U true CN218510871U (en) | 2023-02-21 |
Family
ID=85213807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222594717.6U Active CN218510871U (en) | 2022-09-29 | 2022-09-29 | Low NO in cracking furnace x Burner apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218510871U (en) |
-
2022
- 2022-09-29 CN CN202222594717.6U patent/CN218510871U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104508374A (en) | Gaseous fuel burner with high energy and combustion efficiency, low pollutant emission and increased heat transfer | |
| CN114085990B (en) | Micro-fine particle biomass fuel and hydrogen-containing gas coupled injection sintering energy-saving emission-reducing method | |
| CN111928237A (en) | Mixed combustion nozzle based on mixed combustion chemical waste gas of circulating fluidized bed boiler and mixed combustion method | |
| CN102635849A (en) | Burner specific for gasifying biological alcohol base fuel and burning method thereof | |
| TW201037069A (en) | Carbonization plant with waste gas recirculation | |
| CN112555828A (en) | Hearth and combustor cooling type surface cold flame premixing gas boiler | |
| CN103868055B (en) | A kind of fuel gas with low heat value that is suitable for cuts stream steady combustion heat storage burner compound with direct current | |
| CN108870383B (en) | Low NOx combustion system of pulverized coal boiler | |
| CN107099336B (en) | Cement decomposing furnace high temperature tertiary air coal gasification fires NO_x Reduction by Effective system again | |
| CN104595927B (en) | Low heat value of gas turbine fuel combustion chamber | |
| CN218510871U (en) | Low NO in cracking furnace x Burner apparatus | |
| CN201293319Y (en) | Flame adjustable single thermal storage burner | |
| CN110160038B (en) | Semi-gasification combustion pressure-bearing boiler for biomass briquette | |
| CN106439803A (en) | Liquid light hydrocarbon fuel gasification and combustion system | |
| CN208038322U (en) | A kind of lime shaft kiln cooling air cyclic utilization system | |
| CN115654481A (en) | Low NO in cracking furnace x Burner and method for treating char gas | |
| CN203744238U (en) | Tangential and direct flows combined combustion stabilizing and heat storage combusting device suitable for low-calorific-value fuel gas | |
| CN2924322Y (en) | Multi-group mixed combustion apparatus | |
| CN114811582A (en) | Double-swirl low-nitrogen combustor | |
| CN203385195U (en) | Porous medium flue gas hot blast stove capable of mixing cold air | |
| CN209977990U (en) | Low-nitrogen full-premixing steam boiler | |
| CN108821615B (en) | Injector for annular sleeve kiln | |
| CN218295710U (en) | Burner with a burner head | |
| CN207455593U (en) | Suitable for the energy-saving low-NOx combustor of biomass marsh gas | |
| CN210345878U (en) | Low-nitrogen low-oxygen-content flue gas furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |