CN220034393U - Cracking furnace with auxiliary combustion chamber - Google Patents
Cracking furnace with auxiliary combustion chamber Download PDFInfo
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- CN220034393U CN220034393U CN202321610645.8U CN202321610645U CN220034393U CN 220034393 U CN220034393 U CN 220034393U CN 202321610645 U CN202321610645 U CN 202321610645U CN 220034393 U CN220034393 U CN 220034393U
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 75
- 238000005336 cracking Methods 0.000 title claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003546 flue gas Substances 0.000 claims abstract description 47
- 238000007599 discharging Methods 0.000 claims abstract description 44
- 239000010779 crude oil Substances 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000004821 distillation Methods 0.000 claims abstract description 21
- 238000000197 pyrolysis Methods 0.000 claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 239000000446 fuel Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000011033 desalting Methods 0.000 claims description 10
- 239000003245 coal Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model relates to the technical field of crude oil pyrolysis, in particular to a pyrolysis furnace with an auxiliary combustion chamber, which comprises the auxiliary combustion chamber and a combustion chamber, wherein the auxiliary combustion chamber is arranged at one side of the pyrolysis furnace; one end of the auxiliary feeding pipe is connected with the auxiliary combustion chamber, and the other end of the auxiliary feeding pipe is connected with the bottom of the primary distillation tower so as to realize that crude oil at the bottom of the primary distillation tower is conveyed into the auxiliary combustion chamber for heating; and one end of the auxiliary discharging pipe is connected with the auxiliary combustion chamber, and the other end of the auxiliary discharging pipe is connected with the atmospheric tower, so that crude oil in the auxiliary combustion chamber is conveyed into the atmospheric tower. One end of the smoke exhaust pipe is connected with the auxiliary combustion chamber, and the other end of the smoke exhaust pipe is connected with the convection section of the cracking furnace, so that the flue gas generated after the fuel in the auxiliary combustion chamber is conveyed into the convection section; the auxiliary combustion chamber is arranged, so that the auxiliary combustion chamber can be well adapted to different use scenes, and has high flexibility; meanwhile, the waste heat of the smoke generated in the auxiliary combustion chamber and the radiation section can be fully utilized, and the working efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of crude oil pyrolysis, in particular to a pyrolysis furnace with an auxiliary combustion chamber.
Background
In the process of preparing ethylene by cracking crude oil, the crude oil is preheated for the first time to reach the temperature required by electric desalting. After desalting, the desalted crude oil is preheated for the second time and is pre-separated in a primary distillation tower. The pre-separated primary tower bottom oil enters an atmospheric furnace for heating, then enters the atmospheric tower for distillation, and the raw materials required by cracking are obtained.
The heating of crude oil requires a large amount of heat, and if a large-scale normal pressure furnace is adopted for intensively heating the crude oil, the adjustment is not flexible enough, and the investment is high and the occupied area is large.
The utility model aims to heat the bottom oil of the fractionating tower by using an auxiliary combustion chamber, and jointly heat crude oil, desalted crude oil and ultrahigh pressure superheated steam by using flue gas of a cracking furnace and the auxiliary combustion chamber; the waste heat of the flue gas of the cracking furnace and the auxiliary combustion chamber can be fully utilized, and the operation adjustment is more flexible.
Disclosure of Invention
In view of the above problems in the prior art, the present utility model provides a pyrolysis furnace with an auxiliary combustion chamber.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
a cracking furnace with an auxiliary combustion chamber comprises,
the auxiliary combustion chamber is arranged at one side of the cracking furnace;
one end of the auxiliary feeding pipe is connected with the auxiliary combustion chamber, and the other end of the auxiliary feeding pipe is connected with the bottom of the primary distillation tower so as to realize that crude oil at the bottom of the primary distillation tower is conveyed into the auxiliary combustion chamber for heating;
one end of the auxiliary discharging pipe is connected with the auxiliary combustion chamber, and the other end of the auxiliary discharging pipe is connected with the atmospheric tower, so that crude oil in the auxiliary combustion chamber is conveyed into the atmospheric tower;
and one end of the smoke exhaust pipe is connected with the auxiliary combustion chamber, and the other end of the smoke exhaust pipe is connected with the convection section of the cracking furnace, so that the flue gas generated after the fuel in the auxiliary combustion chamber is conveyed into the convection section.
Preferably, the convection section is hollow; a chimney is arranged at one end of the convection section, which is far away from the radiation section;
the flue gas in the convection section exits the convection section from the stack.
Preferably, the convection section comprises a processing section and an energy-saving section,
the processing section is erected in the convection section and is positioned on the path of the flue gas flow so as to realize the processing treatment of crude oil and the conveying of the crude oil to the radiation section for cracking;
the energy-saving section is erected in the convection section and is positioned on the path of the flue gas flow so as to realize the use of external equipment after the water is processed;
the flue gas is used for realizing heating treatment on the processing section and the energy-saving section.
Preferably, the processing section comprises a first preheating section, a second preheating section, a third preheating section, a fourth preheating section and a fifth preheating section, wherein the first preheating section realizes crude oil feeding through a first feeding pipe and is connected with a de-electric desalting device through a first discharging pipe; the second preheating section is connected with the de-electric desalting device through a second feeding pipe and is connected with the primary distillation tower through a second discharging pipe; the third preheating section is connected with the atmospheric tower and the steam generator through a third feeding pipe and is connected with the fifth preheating section through a third discharging pipe; the fourth preheating section is connected with the steam generator through a fourth feeding pipe and is connected with the third discharging pipe through a fourth discharging pipe; the fifth preheating section is connected with the radiation section through a fifth discharging pipe.
Preferably, the energy-saving section comprises a coal-saving section, a first superheating section and a second superheating section,
the coal saving section is connected with the boiler through a sixth feeding pipe and is connected with the steam drum through a sixth discharging pipe;
the first superheating section is connected with the steam drum through a seventh feeding pipe, and is connected with the second superheating section through a seventh discharging pipe;
the second superheating section is connected with the external equipment through an eighth discharging pipe.
Preferably, the device also comprises a temperature regulator,
the temperature regulator is arranged at the seventh discharging pipe and is used for monitoring the temperature inside the eighth discharging pipe.
Preferably, a fifth preheating section, a second superheating section, a first superheating section, a fourth preheating section, a third preheating section, a second preheating section, a coal-saving section and a first preheating section are sequentially arranged in the convection section along the flow direction of the flue gas.
The utility model has at least the following beneficial effects:
1. through the setting of auxiliary combustion chamber, can satisfy the needs of the temperature that carries out distillation to crude oil in the atmospheric tower on the one hand, the flue gas that produces in the auxiliary combustion chamber of on the other hand itself has very high heat, so after entering convection section, in the flow in-process of flue gas, can provide a large amount of heat for convection section, satisfies convection section to a large amount of thermal demands.
2. The auxiliary combustion chamber belongs to external equipment and is connected with the cracking furnace only through the smoke exhaust pipe, so that the auxiliary combustion chamber has high flexibility in arrangement of the placement position and the shape structure, and can be well adapted to use in different environments.
3. The utility model can fully utilize the waste heat generated after the combustion of the gas fuel or the liquid fuel in the auxiliary combustion chamber, and improve the working efficiency.
Drawings
FIG. 1 is a schematic view of a pyrolysis furnace having an auxiliary combustion chamber in accordance with the present utility model;
fig. 2 is a cross-sectional view of a convection section in accordance with the present utility model.
The names of the parts indicated by the numerical references in the drawings are as follows:
110. an auxiliary combustion chamber; 111. an auxiliary feeding pipe; 112. an auxiliary discharging pipe; 113. a smoke exhaust pipe; 210. a pyrolysis furnace; 211. a convection section; 212. a radiation section; 220. a chimney; 230. a first preheating section; 231. a first feed tube; 232. a first discharge pipe; 240. a second preheating section; 241. a second feed tube; 242. a second discharge pipe; 250. a third preheating section; 251. a third feed tube; 252. a third discharge pipe; 260. a fourth preheating section; 261. a fourth feed tube; 262. a fourth discharge pipe; 270. a fifth preheating section; 271. a fifth discharge pipe; 280. a coal-saving section; 281. a sixth feed tube; 282. a sixth discharge pipe; 290. a first superheating section; 291. a seventh feed tube; 292. a seventh discharge tube; 310. a second superheating section; 311. and an eighth discharging pipe.
Detailed Description
For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples. It is to be understood that the examples are illustrative of the present utility model and are not intended to be limiting.
As shown in fig. 1-2, the present embodiment provides a pyrolysis furnace with an auxiliary combustion chamber, comprising,
an auxiliary combustion chamber 110 provided at one side of the pyrolysis furnace 210;
an auxiliary feeding pipe 111, one end of which is connected with the auxiliary combustion chamber 110, and the other end of which is connected with the bottom of the primary distillation tower, so as to realize that crude oil at the bottom of the primary distillation tower is conveyed into the auxiliary combustion chamber 110 for heating;
an auxiliary discharging pipe 112, one end of which is connected with the auxiliary combustion chamber 110, and the other end of which is connected with the atmospheric tower, so as to realize the transportation of the crude oil in the auxiliary combustion chamber 110 into the atmospheric tower;
and one end of the smoke exhaust pipe 113 is connected with the auxiliary combustion chamber 110, and the other end of the smoke exhaust pipe is connected with the convection section 211 of the cracking furnace 210, so that the smoke generated after the fuel in the auxiliary combustion chamber 110 is conveyed into the convection section 211.
In this embodiment, the auxiliary combustion chamber 110 may be an existing radiant chamber of a tube furnace.
In this embodiment, when in use, crude oil at the bottom of the primary distillation tower is conveyed to the auxiliary combustion chamber 110 through the auxiliary feeding pipe 111, the conveyed crude oil is heated in the auxiliary combustion chamber 110 through the combustion of gas fuel or liquid fuel, wherein the heated crude oil is conveyed to the atmospheric tower through the auxiliary discharging pipe 112 for distillation treatment, and flue gas generated after the combustion of the gas fuel or liquid fuel is conveyed to the inlet of the convection section 211 through the smoke exhaust pipe 113, so that the flue gas generated in the auxiliary combustion chamber 110 is mixed with flue gas generated in the radiation section 212 of the cracking furnace 210;
it should be noted that, since a large amount of heat is required for heating crude oil, and the volume of the cracking furnace 210 is relatively small, it is not practical to set up a combustion chamber in the cracking furnace 210, so to meet the requirement of a large amount of heat in the convection section 211, an auxiliary combustion chamber 110 is provided at one side of the cracking furnace 210, on one hand, the crude oil in the primary distillation tower can be heated and conveyed to the atmospheric tower, and the requirement of the atmospheric tower on the temperature for distilling the crude oil can be met, and on the other hand, the flue gas generated in the auxiliary combustion chamber 110 has a high heat, so after entering the convection section 211, in the flowing process of the flue gas, a large amount of heat can be provided for the convection section 211, and the requirement of the convection section 211 for a large amount of heat can be met.
It should be noted that, since the auxiliary combustion chamber 110 belongs to an external device and is connected with the pyrolysis furnace 210 only through the smoke exhaust pipe 113, the placement position and the shape configuration of the auxiliary combustion chamber 110 are highly flexible, and the auxiliary combustion chamber can be well adapted to use in different environments; meanwhile, the waste heat generated after the combustion of the gas fuel or the liquid fuel in the auxiliary combustion chamber 110 can be fully utilized.
In this embodiment, the convection section 211 is hollow; a chimney 220 is arranged at one end of the convection section 211 away from the radiation section 212;
the flue gas in the convection section 211 exits the convection section 211 from the stack 220.
Through the arrangement of the chimney 220 in this embodiment, after the flue gas in the auxiliary combustion chamber 110 enters the convection section 211 and is mixed with the flue gas generated at the radiation section 212, the flue gas flows from the inlet of the convection section 211 toward the direction of the chimney 220, so that the flue gas provides a large amount of heat for the convection section 211 in the flowing process, and finally the flue gas is discharged from the chimney 220 to the convection section 211.
In this embodiment, the convection section 211 includes a process section and an energy saving section,
the processing section is erected in the convection section 211 and is positioned on the path of the flue gas flow so as to realize the processing treatment of crude oil and convey the crude oil to the radiation section 212 for a cracking process;
the energy-saving section is erected in the convection section 211 and is positioned on the path of the flue gas flow so as to realize the use of external equipment after the water is processed;
the flue gas is used for realizing heating treatment on the processing section and the energy-saving section.
By the construction in this embodiment, the flue gas exchanges heat with the processing section and the energy-saving section in the process of flowing to the chimney 220, and the high-temperature flue gas increases the temperatures of the processing section and the energy-saving section;
after the external crude oil is conveyed into the processing section, the crude oil in the processing section exchanges heat with the flue gas at the same time, so that the temperature of the crude oil is increased, the heating treatment of the crude oil is realized, and finally the crude oil subjected to the heating treatment in the processing section is conveyed into the radiation section 212 for the cracking process;
and conveying the water with low temperature to the energy-saving section, wherein the water in the energy-saving section exchanges heat with the flue gas at the same time, so that the temperature of the water is increased, and the water is finally output in a liquid or gaseous form for use.
It can be understood that, because the temperature of the flue gas is relatively high, in order to fully utilize the heat of the flue gas and avoid waste, the energy-saving section is arranged, and the heat of the flue gas is utilized to the greatest extent.
It should be noted that, because the convection section 211 is hollow, and the processing section and the energy-saving section are both erected in the convection section 211, the processing section and the energy-saving section do not form an obstruction to the flow of the flue gas, so that the flue gas can smoothly flow towards the chimney 220, and simultaneously the heat exchange process with the processing section and the energy-saving section is satisfied.
In this embodiment, the processing section includes a first preheating section 230, a second preheating section 240, a third preheating section 250, a fourth preheating section 260, and a fifth preheating section 270, where the first preheating section 230 realizes crude oil feeding through a first feeding pipe 231, and is connected to a de-electric desalting device through a first discharging pipe 232; the second preheating section 240 is connected with the de-electric desalting device through a second feeding pipe 241 and is connected with the primary distillation tower through a second discharging pipe 242; the third preheating section 250 is connected with the atmospheric tower and the steam generator through a third feeding pipe 251 and is connected with the fifth preheating section 270 through a third discharging pipe 252; the fourth preheating section 260 is connected to the steam generator via a fourth feed line 261 and to the third discharge line 252 via a fourth discharge line 262; the fifth preheating section 270 is connected to the radiant section 212 via a fifth discharge line 271.
By the constitution in this embodiment, when in use, crude oil is inputted into the first preheating section 230 through the first feed pipe 231 for preheating, the preheated crude oil is then conveyed into the de-electric desalting device through the first discharge pipe 232 for treatment, the desalted crude oil after treatment by the de-electric desalting device is conveyed into the second preheating section 240 through the second feed pipe 241 for heating treatment, the desalted crude oil after heating is conveyed into the primary distillation tower through the second discharge pipe 242 for treatment, it should be noted that the crude oil after treatment by the primary distillation tower is conveyed into the auxiliary combustion chamber 110 through the auxiliary feed pipe 111 for heating, then conveyed into the atmospheric distillation tower through the auxiliary discharge pipe 112 for distillation treatment to form atmospheric distillate, the atmospheric distillate is conveyed into the third preheating section 250 through the third feed pipe 251 for heating treatment, it should be noted that the third feed pipe 251 is connected to the steam generator at the same time, so that the atmospheric distillate fed to the third preheating section 250 is mixed with steam, and at the same time, the steam generator feeds steam to the fourth preheating section 260 through the fourth feed pipe 261, and then the atmospheric distillate and steam in the third preheating section 250 are fed to the fifth preheating section 270 through the third discharge pipe 252 for heating treatment, and in this process, the fourth preheating section 260 is also connected to the third discharge pipe 252 through the fourth discharge pipe 262, so that the heated steam in the fourth preheating section 260 enters the third discharge pipe 252, and the atmospheric distillate is mixed with steam in the third discharge pipe 252 and fed to the fifth preheating section 270 for heating, and finally fed to the radiant section 212 through the fifth discharge pipe 271 for cracking.
In this embodiment, the energy saving section includes a coal saving section 280, a first superheating section 290 and a second superheating section 310,
the coal saving section 280 is connected with a boiler through a sixth feeding pipe 281 and is connected with a steam drum through a sixth discharging pipe 282;
the first superheating section 290 is connected with the steam drum through a seventh feeding pipe 291, and is connected with the second superheating section 310 through a seventh discharging pipe 292;
the second superheating section 310 is connected to the external apparatus through an eighth discharging pipe 311.
By the configuration in the embodiment, in use, water in the boiler is input into the coal saving section 280 through the sixth feed pipe 281 for heating treatment, and the heated water is conveyed into the steam drum through the sixth discharge pipe 282 in a gaseous state; saturated steam in the steam drum is conveyed to the first superheating section 290 through the seventh feeding pipe 291 for heating treatment, is conveyed to the second superheating section 310 through the seventh discharging pipe 292 for heating, is heated to a temperature required by external equipment, and is conveyed to the external equipment for use through the eighth discharging pipe 311.
In this embodiment, the temperature regulator is also included,
the temperature regulator is disposed at the seventh discharge pipe 292 and is used to monitor the temperature inside the eighth discharge pipe 311.
Through the construction in the embodiment, the temperature of the steam output to the external equipment in the eighth discharging pipe 311 can be preferably monitored, so as to ensure that the temperature of the steam can reach the temperature required by the use of the external equipment;
it should be noted that, when the temperature of the steam in the eighth discharging pipe 311 is higher than the temperature required by the external device, the seventh discharging pipe 292 may be connected to the boiler, and the connection between the seventh discharging pipe 292 and the boiler may be directly controlled by the temperature regulator or indirectly controlled by the control valve, and when the connection is opened, the low-temperature water in the boiler may enter the second superheating section 310 to implement the cooling treatment on the steam in the second superheating section 310, and it may be understood that the water entering the second superheating section 310 may also be converted into the steam at a high temperature and output.
In this embodiment, a fifth preheating section 270, a second superheating section 310, a first superheating section 290, a fourth preheating section 260, a third preheating section 250, a second preheating section 240, a coal-saving section 280 and a first preheating section 230 are sequentially disposed in the convection section 211 along the flow direction of the flue gas.
In this embodiment, since the temperature of the flue gas in the auxiliary combustion chamber 110 is highest when the flue gas enters the convection section 211, and the temperature of the flue gas gradually decreases in the process of flowing the flue gas to the chimney 220, the temperature of the convection section 211 also gradually decreases in the direction of flowing the flue gas, so that according to the different heat requirements, the fifth preheating section 270, the second superheating section 310, the first superheating section 290, the fourth preheating section 260, the third preheating section 250, the second preheating section 240, the coal-saving section 280 and the first preheating section 230 are sequentially arranged in order, so that the heat of the flue gas can be utilized to the greatest extent, and the working efficiency is improved.
In summary, the foregoing description is only of the preferred embodiments of the present utility model, and all equivalent changes and modifications made in accordance with the claims should be construed to fall within the scope of the utility model.
Claims (7)
1. A pyrolysis furnace with auxiliary combustion chamber, characterized in that: comprising the steps of (a) a step of,
the auxiliary combustion chamber is arranged at one side of the cracking furnace;
one end of the auxiliary feeding pipe is connected with the auxiliary combustion chamber, and the other end of the auxiliary feeding pipe is connected with the bottom of the primary distillation tower so as to realize that crude oil at the bottom of the primary distillation tower is conveyed into the auxiliary combustion chamber for heating;
one end of the auxiliary discharging pipe is connected with the auxiliary combustion chamber, and the other end of the auxiliary discharging pipe is connected with the atmospheric tower, so that crude oil in the auxiliary combustion chamber is conveyed into the atmospheric tower;
and one end of the smoke exhaust pipe is connected with the auxiliary combustion chamber, and the other end of the smoke exhaust pipe is connected with the convection section of the cracking furnace, so that the flue gas generated after the fuel in the auxiliary combustion chamber is conveyed into the convection section.
2. A pyrolysis furnace with an auxiliary combustion chamber as recited in claim 1, wherein: the convection section is hollow; a chimney is arranged at one end of the convection section, which is far away from the radiation section;
the flue gas in the convection section exits the convection section from the stack.
3. A pyrolysis furnace with an auxiliary combustion chamber as recited in claim 2, wherein: the convection section comprises a processing section and an energy-saving section,
the processing section is erected in the convection section and is positioned on the path of the flue gas flow so as to realize the processing treatment of crude oil and the conveying of the crude oil to the radiation section for cracking;
the energy-saving section is erected in the convection section and is positioned on the path of the flue gas flow so as to realize the use of external equipment after the water is processed;
the flue gas is used for realizing heating treatment on the processing section and the energy-saving section.
4. A pyrolysis furnace having an auxiliary combustion chamber as recited in claim 3, wherein: the processing section comprises a first preheating section, a second preheating section, a third preheating section, a fourth preheating section and a fifth preheating section, wherein the first preheating section realizes crude oil feeding through a first feeding pipe, and is connected with a de-electric desalting device through a first discharging pipe; the second preheating section is connected with the de-electric desalting device through a second feeding pipe and is connected with the primary distillation tower through a second discharging pipe; the third preheating section is connected with the atmospheric tower and the steam generator through a third feeding pipe and is connected with the fifth preheating section through a third discharging pipe; the fourth preheating section is connected with the steam generator through a fourth feeding pipe and is connected with the third discharging pipe through a fourth discharging pipe; the fifth preheating section is connected with the radiation section through a fifth discharging pipe.
5. A pyrolysis furnace having an auxiliary combustion chamber as recited in claim 3, wherein: the energy-saving section comprises a coal-saving section, a first superheating section and a second superheating section,
the coal saving section is connected with the boiler through a sixth feeding pipe and is connected with the steam drum through a sixth discharging pipe;
the first superheating section is connected with the steam drum through a seventh feeding pipe, and is connected with the second superheating section through a seventh discharging pipe;
the second superheating section is connected with the external equipment through an eighth discharging pipe.
6. A pyrolysis furnace with an auxiliary combustion chamber as recited in claim 5, wherein: also comprises a temperature regulator, wherein the temperature regulator is provided with a temperature control circuit,
the temperature regulator is arranged at the seventh discharging pipe and is used for monitoring the temperature inside the eighth discharging pipe.
7. A pyrolysis furnace with an auxiliary combustion chamber as recited in claim 5, wherein: the convection section is sequentially provided with a fifth preheating section, a second superheating section, a first superheating section, a fourth preheating section, a third preheating section, a second preheating section, a coal-saving section and a first preheating section along the flow direction of the flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321610645.8U CN220034393U (en) | 2023-06-22 | 2023-06-22 | Cracking furnace with auxiliary combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321610645.8U CN220034393U (en) | 2023-06-22 | 2023-06-22 | Cracking furnace with auxiliary combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220034393U true CN220034393U (en) | 2023-11-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321610645.8U Active CN220034393U (en) | 2023-06-22 | 2023-06-22 | Cracking furnace with auxiliary combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220034393U (en) |
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2023
- 2023-06-22 CN CN202321610645.8U patent/CN220034393U/en active Active
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