CN115854554A - Hydrogen-fired heating furnace suitable for oil field station - Google Patents
Hydrogen-fired heating furnace suitable for oil field station Download PDFInfo
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- CN115854554A CN115854554A CN202211552421.6A CN202211552421A CN115854554A CN 115854554 A CN115854554 A CN 115854554A CN 202211552421 A CN202211552421 A CN 202211552421A CN 115854554 A CN115854554 A CN 115854554A
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- Prior art keywords
- hydrogen
- fire tube
- furnace
- oil field
- natural gas
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 38
- 239000001257 hydrogen Substances 0.000 claims abstract description 77
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 77
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 73
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000002485 combustion reaction Methods 0.000 claims abstract description 48
- 239000003345 natural gas Substances 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 9
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 3
- 230000008602 contraction Effects 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000002803 fossil fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
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Abstract
The invention discloses a hydrogen-burning heating furnace suitable for an oil field station, which comprises: the device comprises a furnace body, a combustion chamber, a heating coil, a burner, a fire tube, an operation room, a chimney and a smoke tube; the burner is partially arranged in the furnace body and partially in the operating room, the chimney is positioned at one side of the furnace body, and the heating coil is positioned in the upper spaces of the combustion chamber and the smoke pipe; the combustor is a hydrogen combustor, and the fuel of the hydrogen combustor is a mixed gas of hydrogen and natural gas; the fire tube is a lengthened fire tube. The invention combines the combustion characteristics of hydrogen and natural gas, and meets the hydrogen combustion requirement by optimizing the structure of the fire tube and the burner.
Description
Technical Field
The invention relates to the technical field of new energy and renewable energy, in particular to a hydrogen-fired heating furnace suitable for an oil field station.
Background
At present, the conventional heating furnace for the oil field is mainly a fuel oil and fuel associated gas heating furnace, and comprises a water jacket furnace, a tubular furnace, a vacuum phase change furnace and the like, wherein the vacuum phase change furnace is commonly used. The vacuum phase-change heating furnace adopts a steam phase-change heat transfer mode, the heat exchanger is positioned in a steam space at the upper parts of the fire tube and the smoke tube, and combustion heat is efficiently transferred through the fire tube and the smoke tube to heat and boil intermediate medium water. The water vapor and the outer wall surface of the heat exchanger carry out phase change heat exchange to release a large amount of phase change latent heat (about 2200 kJ/kg), the water vapor is changed into liquid water with the same temperature from a gas state, the water vapor falls back to the liquid surface and is reheated, and the medium in the heat exchanger is heated in a circulating and reciprocating way. The fire tube, the smoke tube, the coil heat exchanger and the steam-water medium in the pot of the vacuum phase-change heating furnace form a 'giant heat pipe', and a high-efficiency superconducting heat transfer system is formed. Air in the furnace shell is exhausted when the heating furnace is started for the first time, and a superconducting heat transfer environment is established for water vapor phase change heat transfer, so that the heat exchange effect outside the tube cannot be influenced even if a shell-and-tube heat exchanger with a larger unit volume heat exchange area is adopted. Because the furnace shell is vacuum and oxygen-free, the fire tube, the smoke tube, the coil and the components in the furnace are not corroded, the service life is long; meanwhile, the furnace shell runs in a closed mode, the possibility of water loss does not exist, water is not required to be supplemented, calcium and magnesium ions and oxygen are not brought in, scaling is avoided, and the heating furnace can always keep high efficiency.
The conventional oil field heating furnace has the following problems:
1. fuel oil and natural gas can only be used as fuels, so that the oil consumption and the gas consumption are high, and the fossil fuel has high energy consumption;
2. carbon emissions are above standard.
Prior patent CN214468620U describes a hydrogen combustion heating furnace comprising: a combustion chamber is arranged in the furnace body, and a combustion furnace outlet is arranged at the first end of the furnace body; the hydrogen channel is arranged in the furnace body and is positioned between the combustion chamber and the inner side surface of the second end of the furnace body, and the hydrogen channel is communicated with the combustion chamber; the oxygen passage is arranged in the middle of the second end of the furnace body in a penetrating way, the first end of the oxygen passage penetrates through the hydrogen passage to be inserted into the combustion chamber, and the second end of the oxygen passage is exposed out of the second end of the furnace body; the baffle plate is arranged in the hydrogen channel and is connected with the inner side wall of the furnace body. Carry hydrogen and oxygen in order to burn in to the furnace body through setting up hydrogen passageway and oxygen passageway on the furnace body to through set up the baffling board in the furnace body, in order carrying out the hydrogen reposition of redundant personnel, can realize in shorter combustion chamber that hydrogen partial combustion produces high-temperature gas, can make cold and hot gas misce bene rapidly simultaneously, make the gas temperature of combustor export even, and then realize the effect of follow-up buggy quick even intensification. The method is characterized in that a coal hydro-gasification heating furnace is used for generating methane-rich synthetic gas, high value-added aromatic oil products and high-heat-value semicoke; is not suitable for hydrogen combustion heat supply of oil field stations.
CN208170386U describes a natural gas and hydrogen mixed combustion device, which includes a burner, a gas mixing device and a control system, wherein the gas mixing device includes a natural gas pipeline, a hydrogen pipeline and a mixed gas pipeline; it is not a furnace and is not suitable for use in oil field sites.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a hydrogen-burning heating furnace suitable for an oil field station, which mainly utilizes burning hydrogen to supply heat for the station.
The invention discloses a hydrogen-burning heating furnace suitable for an oil field station, which comprises: the device comprises a furnace body, a combustion chamber, a heating coil, a burner, a fire tube, an operation room, a chimney and a smoke tube; the burner is partially arranged in the furnace body and partially arranged in the operation room, the chimney is positioned at one side of the furnace body, and the heating coil is positioned in the upper spaces of the combustion chamber and the smoke pipe; wherein,
the combustor is a hydrogen combustor, and the fuel of the hydrogen combustor is a mixed gas of hydrogen and natural gas; the fire tube is a lengthened fire tube.
As a further improvement of the invention, the hydrogen burner comprises a shell, wherein a fixed frame is arranged in the shell and divides the shell into a combustion cavity and an air supply cavity;
the inner side of the fixing frame is sequentially provided with a double-swirl blade and a natural gas nozzle, a plurality of hydrogen nozzles are annularly distributed on the fixing frame, the outer side of each hydrogen nozzle is provided with a swirl blade, and each hydrogen nozzle is provided with a Venturi convergent-divergent nozzle;
the end part of the air supply cavity is provided with a fan, the natural gas nozzle is connected with a natural gas combustion pipeline, and the hydrogen nozzle is connected with a hydrogen pipeline.
As a further improvement of the invention, the hydrogen adding proportion in the mixed gas is less than 24%.
As a further improvement of the invention, the length of the fire tube is used for ensuring the hydrogen to be fully combusted.
As a further improvement of the invention, the fire tube has a length of 6m.
As a further improvement of the invention, the furnace body is made of Q235B material.
As a further improvement of the invention, the fire tube is made of Q245R material.
Compared with the prior art, the invention has the beneficial effects that:
the invention combines the combustion characteristics of hydrogen and natural gas, and meets the hydrogen combustion requirement by optimizing the structure of the fire tube and the burner; through developing experimental research, the matching of hydrogen combustion and energy consumption requirements of an oil field station is realized, the problem that a conventional heating furnace cannot combust hydrogen is solved, and the hydrogen is used as fuel to combust in the heating furnace so as to provide heating for various places of an oil field; the invention can reduce the fossil fuel energy consumption and carbon emission of the oil field block, and realize the high-efficiency substitution of clean energy of each station of the oil field.
Drawings
FIG. 1 is a schematic structural diagram of a hydrogen-fired furnace suitable for an oil field station according to an embodiment of the present invention;
fig. 2 is a schematic view of the structure of the burner of fig. 1.
In the figure:
1. a chimney; 2. an operation room; 3. a burner; 4. a furnace body; 5. a heating coil; 6. a smoke pipe; 7. a fire tube; 8. a combustion chamber;
3-1, a combustion chamber; 3-2, hydrogen nozzles; 3-3, swirl vanes; 3-4, a Venturi scaling nozzle; 3-5, fixing frames; 3-6, track; 3-7, double swirl vanes; 3-8, hydrogen pipeline; 3-9, natural gas nozzles; 3-10, a natural gas combustion pipeline; 3-11 and a fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the present invention provides a hydrogen-fired heating furnace suitable for an oil field station, comprising: the device comprises a furnace body 4, a combustion chamber 8, a heating coil 5, a burner 3, a fire tube 7, an operation room 2, a chimney 1 and a smoke tube 6; wherein, the combustion chamber 8, the fire tube 7, the heating coil 5 and the smoke tube 6 are positioned in the furnace body 4, the burner 3 is partially positioned in the furnace body 4 and partially positioned in the operation room 2, the chimney 1 is positioned at one side of the furnace body 4, and the heating coil 5 is positioned in the upper space of the combustion chamber 8 and the smoke tube 6; the invention optimizes the proportion of hydrogen and natural gas aiming at the combustion characteristics of the hydrogen and the natural gas, and realizes the heating furnace for the oil field by taking the hydrogen as fuel through improving the structure of the burner and the fire tube; the method specifically comprises the following steps:
the burner 3 of the present invention is a hydrogen burner, as shown in fig. 2, the hydrogen burner comprising: the device comprises a shell, a combustion chamber 3-1, a hydrogen nozzle 3-2, swirl vanes 3-3, a Venturi scaling nozzle 3-4, a fixing frame 3-5, a track 3-6, double swirl vanes 3-7, a hydrogen pipeline 3-8, a natural gas nozzle 3-9, a natural gas combustion pipeline 3-10 and a fan 3-11; wherein, the outer wall of the shell is provided with a track 3-6, the shell is internally provided with a fixed mount 3-5 and is divided into a combustion cavity 3-1 and an air supply cavity; the inner side of the fixed frame 3-5 is sequentially provided with a double-swirl blade 3-7 and a natural gas nozzle 3-9, a plurality of hydrogen nozzles 3-2 are annularly distributed on the fixed frame 3-5, the outer side of each hydrogen nozzle 3-2 is provided with a swirl blade 3-3, and each hydrogen nozzle 3-2 is provided with a Venturi convergent-divergent nozzle 3-4; the end part of the air supply cavity is provided with a fan 3-11, a natural gas nozzle rail 3-9 is connected with a natural gas combustion pipeline 3-10, and a hydrogen nozzle 3-2 is connected with a hydrogen pipeline 3-8. The hydrogen combustor adopts a diffusion type combustion mode, is annularly arranged and is provided with a plurality of hydrogen combustion nozzles, and combustion air tangentially enters the furnace from the double-swirl vanes 3-7 and is mixed with the injected hydrogen, so that the hydrogen and the air are well mixed and combusted; the conical nozzles are adopted, so that the air flow velocity of the nozzles is uniform as much as possible, and the air flow velocity of each point under the lowest load is ensured to be higher than the flame propagation velocity; the small fire holes are adopted, so that the heat dissipation of the wall of the fire hole to the flame is increased, and the flame propagation speed is reduced.
The fuel of the hydrogen burner is the mixed gas of hydrogen and natural gas, the hydrogen density is one tenth of the natural gas, the flame speed is eight times of methane, and the heat value of the hydrogen is 1.4 multiplied by 10 8 J/kg, natural gas heat value of 5X 10 7 J/kg; the invention preferably has the hydrogen loading proportion in the mixed gas less than 24 percent, and avoids the problem that the temperature is increased due to overhigh proportion, thereby causing the increase of NOx emission.
The fire tube 7 is a lengthened fire tube, and the length of the fire tube is used for ensuring the hydrogen to be fully combusted. Wherein, the fire tube length of the heating furnace which is commonly used at present is 4.2m, while the fire tube length of the hydrogen heating furnace is larger than that of the common fire tube, the length is improved to 6m, and the hydrogen is ensured to be fully combusted.
Furthermore, the furnace body 4 adopts Q235B material, has good toughness and castability, and is easy to punch and weld; the fire tube 7 is made of Q245R material and has good temperature resistance and corrosion resistance.
When the device is used, hydrogen and natural gas enter the combustion chamber 8 through the gas inlet valve group for combustion, the combustion heat is efficiently transferred through the combustion chamber 8 and the smoke pipe 6, the heat is transferred to intermediate medium water, the water is heated and then evaporated into saturated vapor, the saturated vapor rises to the heated coil pipe 5 on the upper layer of the furnace body 4 and contacts with the heated medium, the vapor releases condensation heat and is transferred to the heated medium, the heated medium is heated, and the vapor is condensed into condensed water and naturally falls to the water space of the heating furnace; the heating is repeated in such a way, so that the temperature rise of the heated medium is realized.
The invention has the advantages that:
the combustion characteristics of hydrogen and natural gas are combined, and the structure of the fire tube and the burner is optimized, so that the combustion requirement of the hydrogen is met; through developing experimental research, the hydrogen combustion and energy consumption requirements of an oil field station are matched, the problem that the conventional heating furnace cannot combust hydrogen is solved, and the hydrogen is used as fuel to combust in the heating furnace so as to provide heating for all places of an oil field; the invention can reduce the fossil fuel energy consumption and carbon emission of the oil field block, and realize the high-efficiency substitution of clean energy of each station and each yard of the oil field.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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 present invention.
Claims (7)
1. A hydrogen-fired furnace suitable for use in an oil field site, comprising: the device comprises a furnace body, a combustion chamber, a heating coil, a burner, a fire tube, an operation room, a chimney and a smoke tube; the burner is partially arranged in the furnace body and partially arranged in the operation room, the chimney is positioned at one side of the furnace body, and the heating coil is positioned in the upper spaces of the combustion chamber and the smoke pipe; it is characterized in that the preparation method is characterized in that,
the combustor is a hydrogen combustor, and the fuel of the hydrogen combustor is a mixed gas of hydrogen and natural gas; the fire tube is a lengthened fire tube.
2. A hydrogen-fired heating furnace suitable for use in an oil field station as claimed in claim 1 wherein the hydrogen burner comprises a housing, the housing having a mounting bracket therein and dividing the housing into a combustion chamber and a supply chamber;
the inner side of the fixing frame is sequentially provided with a double-swirl blade and a natural gas nozzle, a plurality of hydrogen nozzles are annularly distributed on the fixing frame, the outer side of each hydrogen nozzle is provided with a swirl blade, and each hydrogen nozzle is provided with a Venturi contraction and expansion nozzle;
the end part of the air supply cavity is provided with a fan, the natural gas nozzle is connected with a natural gas combustion pipeline, and the hydrogen nozzle is connected with a hydrogen pipeline.
3. The hydrogen-fired furnace suitable for use in an oil field station according to claim 1, wherein the hydrogen loading ratio in the mixed gas is less than 24%.
4. A hydrogen-fired furnace as claimed in claim 1 adapted for use in an oil field station, wherein the length of the flame tube is such as to ensure adequate combustion of the hydrogen.
5. The hydrogen-fired furnace suitable for use in an oilfield site of claim 4, wherein the fire tube has a length of 6m.
6. The hydrogen-fired furnace as claimed in claim 1, wherein the furnace body is made of Q235B.
7. The hydrogen-fired furnace as claimed in claim 1, wherein the fire tube is made of Q245R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211552421.6A CN115854554A (en) | 2022-12-05 | 2022-12-05 | Hydrogen-fired heating furnace suitable for oil field station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211552421.6A CN115854554A (en) | 2022-12-05 | 2022-12-05 | Hydrogen-fired heating furnace suitable for oil field station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115854554A true CN115854554A (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211552421.6A Pending CN115854554A (en) | 2022-12-05 | 2022-12-05 | Hydrogen-fired heating furnace suitable for oil field station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115854554A (en) |
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2022
- 2022-12-05 CN CN202211552421.6A patent/CN115854554A/en active Pending
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