CN220828844U - Novel combustion type three-pressure steam superheating furnace system - Google Patents
Novel combustion type three-pressure steam superheating furnace system Download PDFInfo
- Publication number
- CN220828844U CN220828844U CN202322616545.2U CN202322616545U CN220828844U CN 220828844 U CN220828844 U CN 220828844U CN 202322616545 U CN202322616545 U CN 202322616545U CN 220828844 U CN220828844 U CN 220828844U
- Authority
- CN
- China
- Prior art keywords
- pressure
- heating surface
- medium
- section
- flue
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 81
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 22
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims description 20
- 229910021529 ammonia Inorganic materials 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 11
- 230000003134 recirculating effect Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000006227 byproduct Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model provides a novel combustion type three-pressure steam superheating furnace system, which comprises an adiabatic hearth, wherein high-temperature flue gas in the adiabatic hearth sequentially flows through a high-pressure superheater three-section heating surface, a high-pressure superheater two-section heating surface, a medium-pressure superheater two-section heating surface, a secondary medium-pressure superheater two-section heating surface, a high-pressure superheater one-section heating surface, a medium-pressure superheater one-section heating surface, a secondary medium-pressure superheater one-section heating surface, a recycling interface section flue, an outlet flue and a flue gas air preheater, and then is discharged through a chimney; the heating surfaces with three different pressures are arranged in a crossed manner, so that saturated steam with each pressure can be heated to rated parameters.
Description
Technical Field
The utility model relates to the technical field of steam superheaters, in particular to a novel combustion type three-pressure steam superheater system.
Background
The steam superheating furnace is one of key equipment in petrochemical equipment, uses process byproduct fuel gas as fuel, uses engineering surplus purified gas to supplement, and is used for heating redundant process byproduct saturated steam after heat balance of whole plant, and the generated superheated steam is used for driving rotating equipment so as to be beneficial to energy conservation and consumption reduction and energy conservation.
However, the conventional steam superheaters have the following problems: (1) The furnace tube arranged in the radiation chamber generally adopts a vertically arranged coiled tube structure, and the furnace tube is easy to be heated and deformed due to the fact that the temperature of the flue gas in the radiation chamber is highest, and the service life of the furnace tube is difficult to meet design requirements; (2) The quantity of the superheated steam is generally only one to two, and no reliable outlet steam temperature regulation measures exist, so that the fluctuation range of the superheated steam outlet temperature is large; (3) The existing steam superheating furnace structure and system are difficult to fully produce saturated steam with various different superheating parameters.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art, and provides a novel combustion type three-pressure steam superheating furnace system, which is realized by the following technical scheme:
The novel combustion type three-pressure steam superheating furnace system comprises an adiabatic hearth, wherein the adiabatic hearth is a vertically arranged flue structure; the bottom of the heat-insulating hearth is provided with a burner; the flue gas outlet at the upper part of the heat-insulating hearth is sequentially connected with a third-section heating surface of the high-pressure superheater, a second-section heating surface of the medium-pressure superheater, a first-section heating surface of the high-pressure superheater, a first-section heating surface of the medium-pressure superheater, a flue of a recirculation interface section, an outlet flue and a flue gas air preheater;
the device comprises a blower and a recirculating fan, wherein the blower is connected with a flue gas air preheater; one end of the recirculation fan is connected with the flue of the recirculation interface section, and the other end is connected with the adiabatic furnace chamber
The high-pressure water spray desuperheater is arranged in a steam pipeline between a third-section heating surface of the high-pressure superheater and a second-section heating surface of the high-pressure superheater;
the water spraying attemperator comprises a medium-pressure section, a water spraying attemperator and a water spraying attemperator, wherein the water spraying attemperator is arranged in a steam pipeline between a first-section heating surface of the medium-pressure superheater and a second-section heating surface of the medium-pressure superheater;
The water spraying attemperator comprises a secondary medium pressure section, and is arranged in a steam pipeline between a primary heating surface of the secondary medium pressure superheater and a secondary heating surface of the secondary medium pressure superheater.
Optionally or preferably, the flue gas treatment device further comprises an ammonia spraying flue and a denitration flue; the ammonia spraying flue is arranged between the second-section heating surface of the secondary medium-pressure superheater and the first-section heating surface of the high-pressure superheater; the denitration flue is arranged between the first-section heating surface of the high-pressure superheater and the first-section heating surface of the medium-pressure superheater.
Optionally or preferably, the ammonia spraying flue is transversely arranged above the secondary medium-pressure superheater second-section heating surface and the high-pressure superheater first-section heating surface; one end of the ammonia spraying flue is connected with the second section heating surface of the secondary medium-pressure superheater through the first steering flue, and the other end of the ammonia spraying flue is connected with the first section heating surface of the high-pressure superheater through the second steering flue.
Alternatively or preferably, the number of blowers and recirculation blowers is two.
Optionally or preferably, the device also comprises a high-pressure steam temperature and pressure reducing device; the high-pressure steam temperature and pressure reducing device is arranged at the steam inlet end.
Optionally or preferably, the number of the high-pressure steam temperature and pressure reducing devices is two, the two high-pressure steam temperature and pressure reducing devices are respectively arranged on a connecting pipe of high-pressure saturated steam and medium-pressure saturated steam and a connecting pipe of high-pressure saturated steam and sub-medium-pressure saturated steam, flow valves are arranged on pipelines connected with the high-pressure steam temperature and pressure reducing devices, and saturated steam in the high-pressure saturated steam pipe can be sent to the medium-pressure saturated steam pipe or the sub-medium-pressure saturated steam pipe after temperature and pressure reduction.
Based on the technical scheme, the following technical effects can be produced:
The novel combustion type three-pressure steam superheating furnace system provided by the utility model can be used for producing saturated steam with three different parameters of high pressure, medium pressure and secondary medium pressure; can reduce combustion temperature, stabilize steam temperature fluctuation, and prolong the service life of equipment.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the apparatus of the present utility model (excluding a steam-water system);
FIG. 2 is a schematic diagram of a flue gas system according to the present utility model;
FIG. 3 is a schematic view of a steam-water system according to the present utility model;
The drawings illustrate:
The heat-insulating furnace chamber, the 2-burner, the 3-high pressure superheater three-section heating surface, the 4-high pressure superheater two-section heating surface, the 5-medium pressure superheater two-section heating surface, the 6-medium pressure superheater two-section heating surface, the 7-high pressure superheater one-section heating surface, the 8-medium pressure superheater one-section heating surface, the 9-medium pressure superheater one-section heating surface, the 10-recycling interface section flue, the 11-outlet flue, the 12-flue gas air preheater, the 13-blower, the 14-recycling fan, the 15-high pressure section water spray desuperheater, the 16-medium pressure section water spray desuperheater, the 17-medium pressure section water spray desuperheater, the 18-ammonia spray flue, the 19-denitration flue, the 20-diversion flue one and the 21-diversion flue two.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and the following embodiments and features of the embodiments may be combined with each other without conflict.
In a preferred embodiment:
The embodiment provides a novel combustion type three-pressure steam superheating furnace system, which is shown in fig. 1-3, and comprises an adiabatic furnace chamber 1, wherein the adiabatic furnace chamber 1 is of a vertically arranged flue structure, a heating surface is not arranged in the adiabatic furnace chamber, fuel is fully combusted in the adiabatic furnace chamber 1, and combusted flue gas and recycled flue gas are fully mixed in the furnace chamber, so that the flue gas temperature at each position is kept consistent when the flue gas enters the heating surface, and the condition that the heating surface is heated unevenly is avoided.
The bottom of the heat-insulating hearth 1 is provided with a burner 2, and a plurality of fuel gases and surplus purified gas which are replenished when the fuel is insufficient are produced as by-products in the process, and are conveyed to the burner through a fuel gas pipeline and enter the burner 2 for combustion.
The high-temperature flue gas uniformly mixed in the adiabatic furnace 1 sequentially flows through a high-pressure superheater three-section heating surface 3, a high-pressure superheater two-section heating surface 4, a medium-pressure superheater two-section heating surface 5, a secondary medium-pressure superheater two-section heating surface 6, a first turning flue 20, an ammonia spraying flue 18, a second turning flue 21, a high-pressure superheater one-section heating surface 7, a medium-pressure superheater one-section heating surface 8, a secondary medium-pressure superheater one-section heating surface 9, a recirculation interface section flue 10, an outlet flue 11 and a flue gas air preheater 12, and then is introduced into a chimney for emission; the heating surfaces with three different pressures are arranged in a crossing way, so that saturated steam with each pressure can be heated to rated parameters;
specifically, the high-pressure saturated steam is superheated to the steam pressure of 9.8-13.7 MPa, and the steam temperature is 500-540 ℃; the medium-pressure saturated steam is superheated to the steam pressure of 3.8-5.3 MPa, and the steam temperature is 400-500 ℃; the secondary medium pressure saturated steam is overheated to steam pressure of 0.8-3.8 MPa and steam temperature of 300-400 ℃; further, denitration treatment is carried out by adopting an SCR process.
Comprises a blower 13 and a recirculation fan 14, wherein the blower 13 is connected with the flue gas air preheater 12; one end of the recirculation fan 14 is connected with the recirculation interface section flue 10, and the other end is connected with the adiabatic furnace 1;
Further, in the present embodiment, as shown in fig. 2, the number of the blowers 13 and the recirculation fans 14 is two; further, the two blowers 13 are used for one, cold air is blown into the flue gas air preheater 12 for heating, and heated hot air is mixed with fuel through a burner for combustion; further, the recirculation fan 14 is used for one time, and the recirculation fan 14 can extract a part of flue gas from the recirculation interface section flue 10 and send the flue gas into the heat-insulating hearth 1 and the combustor 2 to be mixed with high-temperature flue gas generated by combustion, so that the theoretical combustion temperature of the heat-insulating hearth 1 is reduced, and the generation of NOx is reduced.
The high-pressure section water spraying attemperator 15 is arranged in a steam pipeline between the high-pressure superheater three-section heating surface 3 and the high-pressure superheater two-section heating surface 4, as shown in fig. 3, high-pressure saturated steam sequentially passes through the high-pressure superheater one-section heating surface 7, the high-pressure superheater two-section heating surface 4 and the high-pressure superheater three-section heating surface 3 to be heated, and the high-pressure section water spraying attemperator 15 can adjust the high-pressure superheated steam outlet air temperature to ensure that the high-pressure superheated steam outlet parameters meet the design requirements.
The medium-pressure section water spray attemperator 16 is arranged in a steam pipeline between the first section heating surface 8 of the medium-pressure superheater and the second section heating surface 5 of the medium-pressure superheater, medium-pressure saturated steam sequentially passes through the first section heating surface 8 of the medium-pressure superheater and the second section heating surface 5 of the medium-pressure superheater to be heated, and the medium-pressure section water spray attemperator 16 can be used for adjusting the air temperature of a high-pressure superheated steam outlet so as to ensure that parameters of the medium-pressure superheated steam outlet meet design requirements.
The secondary medium pressure section water spray attemperator 17 is arranged in a steam pipeline between a primary heating surface 9 of the secondary medium pressure superheater and a secondary heating surface 6 of the secondary medium pressure superheater, medium pressure saturated steam sequentially passes through the primary heating surface 9 of the secondary medium pressure superheater and the secondary heating surface 6 of the secondary medium pressure superheater to be heated, and the secondary medium pressure section water spray attemperator 17 can adjust the temperature of a secondary medium pressure superheated steam outlet, so that the parameters of the secondary medium pressure superheated steam outlet can meet design requirements.
Further, in this embodiment, as shown in fig. 3, the device further includes a high-pressure steam temperature and pressure reducing device, the secondary medium pressure, medium pressure and high-pressure saturated steam come from three different upstream process devices, and when load fluctuation or failure shutdown occurs in the process devices of the upstream byproduct medium-pressure saturated steam and the secondary medium-pressure saturated steam, a part of the high-pressure saturated steam is subjected to temperature and pressure reduction and is sent to a medium-pressure saturated steam or secondary medium-pressure saturated steam pipeline, and the flow ratio of the three types of steam is adjusted, so that the purposes of avoiding overburning caused by insufficient flow of the medium-pressure superheater and the secondary medium-pressure superheater and heating three steam parameters to rated parameters are achieved.
The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (6)
1. A novel combustion type three-pressure steam superheating furnace system, which is characterized in that:
The furnace comprises an adiabatic furnace chamber (1), wherein the adiabatic furnace chamber (1) is a vertically arranged flue structure; the bottom of the heat-insulating hearth (1) is provided with a burner (2); the flue gas outlet at the upper part of the heat-insulating hearth (1) is sequentially connected with a high-pressure superheater three-section heating surface (3), a high-pressure superheater two-section heating surface (4), a medium-pressure superheater two-section heating surface (5), a secondary medium-pressure superheater two-section heating surface (6), a high-pressure superheater one-section heating surface (7), a medium-pressure superheater one-section heating surface (8), a secondary medium-pressure superheater one-section heating surface (9), a recirculation interface section flue (10), an outlet flue (11) and a flue gas air preheater (12);
Comprises a blower (13) and a recirculation fan (14), wherein the blower (13) is connected with the flue gas air preheater (12); one end of the recirculation fan (14) is connected with the recirculation interface section flue (10), and the other end of the recirculation fan is connected with the heat-insulating hearth (1);
The high-pressure water spray desuperheater comprises a high-pressure section water spray desuperheater (15) which is arranged in a steam pipeline between a three-section heating surface (3) of the high-pressure superheater and a two-section heating surface (4) of the high-pressure superheater;
The device comprises a medium-pressure section water spraying attemperator (16) which is arranged in a steam pipeline between a first-section heating surface (8) of the medium-pressure superheater and a second-section heating surface (5) of the medium-pressure superheater;
The device comprises a secondary medium pressure section water spraying attemperator (17) which is arranged in a steam pipeline between a primary heating surface (9) of the secondary medium pressure superheater and a secondary heating surface (6) of the secondary medium pressure superheater.
2. A novel combustion type three-pressure steam superheating furnace system according to claim 1, characterized in that: the device also comprises an ammonia spraying flue (18) and a denitration flue (19); the ammonia spraying flue (18) is arranged between the secondary medium-pressure superheater second-section heating surface (6) and the high-pressure superheater first-section heating surface (7); the denitration flue (19) is arranged between the section of heating surface (7) of the high-pressure superheater and the section of heating surface (8) of the medium-pressure superheater.
3. A novel combustion type three-pressure steam superheating furnace system according to claim 2, characterized in that: the ammonia spraying flue (18) is transversely arranged above the secondary medium-pressure superheater second-section heating surface (6) and the high-pressure superheater first-section heating surface (7); one end of the ammonia spraying flue (18) is connected with the second section heating surface (6) of the secondary medium-pressure superheater through a first steering flue (20), and the other end of the ammonia spraying flue is connected with the first section heating surface (7) of the high-pressure superheater through a second steering flue (21).
4. A novel combustion type three-pressure steam superheating furnace system according to claim 1, characterized in that: the number of the blowers (13) and the number of the recirculating fans (14) are two.
5. A novel combustion type three-pressure steam superheating furnace system according to claim 1, characterized in that: the device also comprises a high-pressure steam temperature and pressure reducing device; the high-pressure steam temperature and pressure reducing device is arranged at the steam inlet end.
6. A novel combustion type triple pressure steam superheating furnace system according to claim 5, characterized in that: the high-pressure steam temperature and pressure reducing devices are two in number and are respectively arranged on a connecting pipe of high-pressure saturated steam and medium-pressure saturated steam and a connecting pipe of high-pressure saturated steam and secondary medium-pressure saturated steam, flow valves are arranged on pipelines communicated with the high-pressure steam temperature and pressure reducing devices, and saturated steam in the high-pressure saturated steam pipe can be sent to the medium-pressure saturated steam pipe or the secondary medium-pressure saturated steam pipe after temperature and pressure reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322616545.2U CN220828844U (en) | 2023-09-26 | 2023-09-26 | Novel combustion type three-pressure steam superheating furnace system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322616545.2U CN220828844U (en) | 2023-09-26 | 2023-09-26 | Novel combustion type three-pressure steam superheating furnace system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220828844U true CN220828844U (en) | 2024-04-23 |
Family
ID=90721822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322616545.2U Active CN220828844U (en) | 2023-09-26 | 2023-09-26 | Novel combustion type three-pressure steam superheating furnace system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220828844U (en) |
-
2023
- 2023-09-26 CN CN202322616545.2U patent/CN220828844U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108119200A (en) | A kind of new bottom type back pressure heat supply steam turbine and its operation method | |
| CN103344124A (en) | Lime kiln waste gas waste heat electricity generating system with by-product coal gas afterburning function | |
| CN103234364B (en) | Device with griddle and process for generating power by efficiently recycling sinter waste heat | |
| CN207778402U (en) | The subcritical gas generating system of superhigh temperature | |
| CN104420995A (en) | Combined Cycle System and operating method thereof, and corresponding heat recovery steam generator | |
| US20140116023A1 (en) | Power plant emissions reduction | |
| CN106122938A (en) | A kind of can the double reheat system of power station boiler of homoiothermic flexibly | |
| CN206694081U (en) | A kind of heat regenerative system for thermal power plant | |
| CN220828844U (en) | Novel combustion type three-pressure steam superheating furnace system | |
| CN107327827A (en) | A kind of large-scale steam-water dual-purpose type boiler | |
| CN109339881B (en) | Starting process NO of gas turbine combined cycle unit 2 Emission control system and method | |
| CN108916864B (en) | Supercritical carbon dioxide cyclone furnace for reducing nitrogen oxides based on ammonia spraying in high-temperature reduction zone | |
| CN103528047B (en) | A kind of steam soot blowing for the tower direct current cooker in thermal power plant regulates the method for reheat steam temperature | |
| CN213577455U (en) | Stable denitration device commissioning system for shutdown emergency operation of coal electric unit without stopping furnace | |
| CN109140492B (en) | Boiler smoke-wind coupling waste heat recovery system | |
| EP1824616A1 (en) | Device and method for boiler superheat temperature control | |
| CN113107621A (en) | 650 ℃ high-efficiency supercritical (super-supercritical) coal-fired power generation system | |
| CN112082147A (en) | Low-pressure superheater system of waste heat boiler | |
| CN111288810A (en) | Device and method for efficiently generating power by using waste heat steam of converter | |
| CN106678863B (en) | A kind of cigarette water composite heating system and method for lignite-fired unit | |
| US20050072379A1 (en) | Device and method for boiler superheat temperature control | |
| CN221035716U (en) | System for improving SCR region temperature in wide-load denitration of coal-fired power plant | |
| CN216953013U (en) | Unit depth peak regulation system | |
| CN219014372U (en) | Coal-fired boiler utilizing steam turbine to heat | |
| CN213207805U (en) | Ultrahigh-pressure reheaterless CFB boiler arrangement structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |