CN113432109B - Double reheating gas boiler - Google Patents
Double reheating gas boiler Download PDFInfo
- Publication number
- CN113432109B CN113432109B CN202110719846.0A CN202110719846A CN113432109B CN 113432109 B CN113432109 B CN 113432109B CN 202110719846 A CN202110719846 A CN 202110719846A CN 113432109 B CN113432109 B CN 113432109B
- Authority
- CN
- China
- Prior art keywords
- flue
- gas
- temperature
- boiler
- low
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
Abstract
The invention discloses a secondary reheating gas boiler, which belongs to the technical field of power station boilers and comprises a boiler furnace, a horizontal flue connected with the boiler furnace and a tail flue connected with the horizontal flue, wherein the inlet section of the tail flue is divided into three front supporting flues, a middle supporting flue and a rear supporting flue which are arranged in parallel and are arranged from near to far relative to the boiler furnace; a low-temperature reheater and an economizer are sequentially arranged in the front branch flue and the middle branch flue along the flow direction of flue gas, and a high-temperature-level gas heater and an economizer are sequentially arranged in the rear branch flue along the flow direction of flue gas; the flue gas inlet of the low-temperature-level gas heater is connected with the outlet section of the tail flue, and the gas heated by the low-temperature-level gas heater is introduced into the gas inlet of the high-temperature-level gas heater, so that the purposes of reducing the heat absorption of the economizer, preventing the economizer from vaporization, simultaneously heating the gas, recovering the heat, reducing the smoke exhaust temperature, improving the boiler efficiency and reducing the unit coal consumption are achieved.
Description
Technical Field
The invention belongs to the technical field of power station boilers, and particularly relates to a double reheating gas boiler.
Background
In order to respond to the national policy requirements of environmental protection, energy conservation and low carbon emission, industrial waste gas (blast furnace gas, coke oven gas, converter gas, chemical tail gas, coking gas and the like) in the production process needs to be comprehensively recovered and recycled in both steel and iron bases and chemical bases so as to achieve the aim of environmental protection and zero emission. The power generation boiler represented by pure burning or mixed burning of industrial tail gas such as blast furnace gas, coke oven gas and the like well solves the problem of environmental pollution, saves energy consumption and meets the urgent requirement of reducing the cost of power generation boilers in steel bases and chemical bases.
The main combustible component CO in the blast furnace gas accounts for about 23 percentThe remainder being predominantly N 2 And CO 2 . The blast furnace gas combustion produces large amount of flue gas, the amount of flue gas per unit calorific value is 1.6-1.8 times of that of bituminous coal, the amount of air required for combustion is small, and the amount of flue gas is 1m 3 The gas combustion needs 0.595-0.85 m 3 Air, the generated smoke has a thickness of 1.6-1.8 m 3 The air-smoke ratio is not proportional, the exhaust gas temperature is difficult to be cooled to a lower level by air, a coal gas heater is usually arranged to reduce the exhaust gas temperature and improve the efficiency, and meanwhile, waste heat is utilized to heat coal gas, so that the fuel utilization rate is improved and the stable combustion is enhanced.
The development of the coal gas power generation technical parameters successively passes through a medium-temperature and medium-pressure first-generation coal gas power generation technology, a high-temperature and high-pressure second-generation coal gas power generation technology, a high-temperature and ultrahigh-pressure or ultrahigh-temperature and ultrahigh-pressure third-generation coal gas power generation technology, an ultrahigh-temperature and subcritical fourth-generation coal gas power generation technology and a supercritical (supercritical) fifth-generation coal gas power generation technology. The parameters of the main machine of the coal gas power generation technology are continuously improved, the power generation efficiency is also continuously improved, and remarkable force is contributed to the creation of value for environmental protection and enterprises.
The development of the double reheating gas boiler can realize the improvement of the parameters of the main machine and the higher generating efficiency of the unit. The existing gas boiler is basically a tail double-flue and single-reheat boiler, and no tail three-flue and double-reheat gas boiler exists in the existing engineering. The developed coal gas-fired three-flue and two-time reheating boiler can refer to a pulverized coal furnace, and the existing two-time reheating boiler with three flues at the tail part of the pulverized coal furnace is generally provided with three heating surfaces of a primary low-temperature superheater, a secondary low-temperature superheater and a low-temperature superheater. However, as the steam parameters of the boiler are improved, the proportion of the low excess heat absorption to the heat absorption of the superheater system is small (the low excess heat absorption only accounts for 5% of the heat absorption of the superheater system, and the low excess heat absorption can be eliminated by properly increasing the heat receiving area of the shielding and the high excess heat absorption. The low temperature only plays the roles of balancing the first and second low re-heat absorption, adjusting the temperature of the reheated steam and matching the smoke resistance among the three flues.
The small problems with low excess endotherm are as follows: the temperature of flue gas passing through the outlet/the inlet of the economizer is high, so that the vaporization of the economizer arranged below the lower part is easily caused, and the safe operation of a unit is influenced;
in order to reduce the heat consumption of the steam turbine, the feed water temperature of the boiler is greatly improved compared with the conventional project. In order to prevent the working medium at the outlet of the economizer from being vaporized, the heat absorption of the economizer is limited, the smoke temperature at the outlet of the economizer is increased, and the smoke exhaust temperature of the air preheater is increased, so that the boiler efficiency is reduced.
Disclosure of Invention
In view of the above, in order to solve the above problems in the prior art, the present invention provides a double reheat gas boiler to achieve the purposes of reducing heat absorption of an economizer, preventing vaporization of the economizer, recovering heat from heated gas, reducing exhaust gas temperature, improving boiler efficiency, and reducing unit coal consumption.
The technical scheme adopted by the invention is as follows: the utility model provides a two-shot gas boiler, includes boiler furnace, connects in boiler furnace's horizontal flue, still includes:
the inlet section of the tail flue is divided into three front flues, middle branch flues and rear branch flues which are arranged in parallel and are arranged from near to far relative to a boiler furnace; a low-temperature reheater and an economizer are sequentially arranged in the front flue and the middle flue along the flow direction of flue gas, and a high-temperature coal gas heater and an economizer are sequentially arranged in the rear flue along the flow direction of flue gas;
the flue gas inlet of the low-temperature-level gas heater is connected with the outlet section of the tail flue, and the gas heated by the low-temperature-level gas heater is introduced into the gas inlet of the high-temperature-level gas heater;
the arrangement of a low-temperature superheater is cancelled in the tail three-flue, a high-temperature-level gas heater is adopted, the heating area of shielding and overhigh heating area is properly increased, the temperature of the gas is further increased to about 265 ℃ from 165 ℃, and the high-temperature-level gas heater can reduce the smoke temperature at the inlet of a smoke well economizer behind a tail three-flue secondary reheating gas boiler, so that the vaporization of the economizer can be prevented;
meanwhile, the arrangement of the high-temperature-level gas heater can play a role in balancing the heat absorption of the primary and secondary low-temperature reheaters, adjusting the temperature of the reheated gas and matching the smoke resistance among the three flues; and the high-temperature-level gas heater absorbs more tail heat of the tail three-flue secondary reheating gas boiler, thereby being beneficial to reducing the smoke exhaust temperature of the air preheater, improving the temperature of the gas entering a hearth and improving the boiler efficiency.
Furthermore, smoke adjusting baffles are arranged at the outlets of the front flue, the middle flue and the rear flue, and the smoke temperature of the primary reheating and the secondary reheating is adjusted by adjusting the smoke proportion in the three flues through each baffle.
Furthermore, a screen type superheater is arranged at the top of the boiler furnace, a high-temperature superheater is arranged at the corner section of the boiler furnace, and a primary high-temperature reheater and a secondary high-temperature reheater are sequentially arranged in a horizontal flue of the boiler furnace.
Furthermore, the inlet section of the tail flue is divided into a front flue, a middle flue and a rear flue by a wrapping wall, the flow channel of the tail flue is separated through the wrapping wall, so that the flue gas flow channel specifications of the front support flue, the middle support flue and the rear support flue meet the design requirements.
Furthermore, the low-temperature reheater in the front flue and the middle flue comprises a low-temperature reheater vertical section and a low-temperature reheater horizontal section which are connected, and the low-temperature reheater vertical section and the low-temperature reheater horizontal section are sequentially arranged along the flow direction of the flue gas.
Further, an air preheater is arranged in an outlet section of the tail flue, and hot air heated by the air preheater is fed into the gas burner or the over-fire air nozzle; the low-temperature grade gas heater is arranged at the outlet of the air preheater, so that the purposes of reducing the exhaust gas temperature of the boiler and increasing the gas temperature can be achieved, the smoke temperature is reduced to 140 ℃ from 205 ℃, and the gas temperature is increased to about 165 ℃ from 40 ℃.
The invention has the beneficial effects that:
1. the secondary reheating gas boiler provided by the invention has the advantages that the tail flue is divided into three flues, the low-temperature heater in the secondary reheating flue is changed into the high-temperature gas heater, the high-temperature gas heater also has the effects of balancing the first-time low-temperature re-heat absorption, adjusting the reheating gas temperature and matching the smoke resistance among the three flues, meanwhile, the high-temperature gas heater can absorb more heat, the smoke temperature at the outlet of the high-temperature gas heater can be reduced to about 430 ℃ which is the same as the smoke temperature at the secondary low-temperature re-outlet, and even lower, so that the heat absorption of an economizer can be reduced, the vaporization of the economizer can be prevented, meanwhile, the heat can be recovered by heating the gas to the combustor, the smoke exhaust temperature is reduced, the boiler efficiency is improved, and the unit coal consumption is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of a double reheat gas boiler provided by the present invention;
the drawings are labeled as follows:
1-screen superheater, 2-high temperature superheater, 3-primary high temperature reheater, 4-secondary high temperature reheater, 5-primary low temperature reheater vertical section, 6-secondary low temperature reheater vertical section, 7-primary low temperature reheater horizontal section, 8-secondary low temperature reheater horizontal section, 9-high temperature grade gas heater, 10-front economizer, 11-middle economizer, 12-rear economizer, 13-front flue, 14-middle flue, 15-rear flue, 16-front flue gas adjusting baffle, 17-middle flue gas adjusting baffle, 18-rear flue gas adjusting baffle, 19-wrapping wall, 20-air preheater, 21-low temperature grade gas heater.
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is usually understood by those skilled in the art, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art; the drawings in the embodiments are provided to clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
In the embodiment, a double reheat gas boiler is specifically provided, which is a brand new double reheat gas boiler system adopting a tail three-flue arrangement, and a low-temperature superheater is not arranged in the system.
As shown in fig. 1, the double reheating gas boiler includes a boiler furnace, a horizontal flue connected to the boiler furnace, a tail flue connected to the horizontal flue, an air preheater, a low-temperature-stage gas heater, and the like.
The top of the boiler furnace is provided with a screen superheater, the folded corner section of the boiler furnace is provided with a high-temperature superheater, and a primary high-temperature reheater and a secondary high-temperature reheater are sequentially arranged in a horizontal flue of the boiler furnace. The gas and the air are combusted in the hearth through a specific combustor to generate flue gas, and the flue gas sequentially passes through a screen type superheater on the upper part of the hearth, a high-temperature superheater, a primary high-temperature reheater and a secondary high-temperature reheater of the horizontal flue and then enters the tail flue.
Divide into inlet section, interlude and export section with the afterbody flue, the inlet section of this afterbody flue links to each other with horizontal flue, and horizontal flue's flue gas lets in to the afterbody flue in. The inlet section of the tail flue is divided into three front flues, a middle branch flue and a rear flue which are arranged in parallel and are arranged from near to far relative to the boiler furnace (arranged from front to back relative to the furnace in the tail flue). In practical application, the inlet section of the tail flue is divided into a front flue, a middle flue and a rear flue through a wrapping wall, and the front flue, the middle flue and the rear flue are communicated with the horizontal flue.
A primary low-temperature reheater and a front economizer are sequentially arranged in the front-supporting flue along the direction of the flow direction of flue gas, and a front flue gas adjusting baffle is arranged at an outlet of the front-supporting flue; the primary low-temperature reheater comprises a primary low-temperature reheater vertical section and a primary low-temperature reheater horizontal section, the primary low-temperature reheater vertical section is connected with the primary low-temperature reheater horizontal section, the primary low-temperature reheater vertical section and the primary low-temperature reheater horizontal section are sequentially arranged along the direction of the flow direction of flue gas, and sufficient heat exchange between the primary low-temperature reheater vertical section and the primary low-temperature reheater horizontal section is achieved.
A secondary low-temperature reheater and a middle economizer are sequentially arranged in the middle branch flue along the flow direction of flue gas, and a middle flue gas adjusting baffle is arranged at an outlet of the middle branch flue; the secondary low-temperature reheater comprises a secondary low-temperature reheater vertical section and a secondary low-temperature reheater horizontal section, the secondary low-temperature reheater vertical section is connected with the secondary low-temperature reheater horizontal section, the secondary low-temperature reheater vertical section and the secondary low-temperature reheater horizontal section are sequentially arranged along the direction of the flow direction of flue gas, and sufficient heat exchange between the secondary low-temperature reheater vertical section and the secondary low-temperature reheater horizontal section and the flue gas is achieved.
High-temperature-level gas heaters and economizers are sequentially arranged in the rear branch flue along the flow direction of flue gas, a rear flue gas adjusting baffle is arranged at an outlet of the rear branch flue, the high-temperature-level gas heaters are arranged in the rear branch flue at the tail part, an original low-temperature superheater is omitted, the high-temperature-level gas heaters are arranged in the rear branch flue of the tail part three-flue secondary reheating boiler, the temperature of entering gas is further increased, the temperature of discharged smoke is reduced, the boiler efficiency is improved, and the safe and efficient operation of the boiler is facilitated. In order to match the high-temperature-level gas heater to increase the temperature of the gas, the low-temperature-level gas heater is also arranged, a flue gas inlet of the low-temperature-level gas heater is connected with an outlet section of the tail flue, a gas outlet of the low-temperature-level gas heater is connected with a gas inlet of the high-temperature-level gas heater, the flue gas discharged from the outlet section of the tail flue exchanges heat with the gas in the low-temperature-level gas heater, the gas heated by the low-temperature-level gas heater is introduced into the gas inlet of the high-temperature-level gas heater, and the gas further heated by the high-temperature-level gas heater is connected to the burner. The gas heater is divided into a high-temperature stage gas heater and a low-temperature stage gas heater, the high-temperature stage gas heater is used for balancing primary and secondary low heat absorption and adjusting the temperature of reheated steam, the high-temperature stage gas heater is matched with the smoke resistance among three flues, and the low-temperature stage gas heater is used for achieving the purposes of reducing the smoke exhaust temperature of the boiler and improving the gas temperature.
An air preheater is arranged in the outlet section of the tail flue, hot air heated by the air preheater is fed into the gas burner or the over-fire air nozzle, and the flue gas in the tail flue is subjected to heat exchange by the air preheater and then fed into the low-temperature-level gas heater for heat exchange, so that the temperature of the discharged flue gas is ensured to be lower.
Based on the double reheat gas boiler that provides, its theory of operation does:
after smoke passes through a primary low secondary vertical heating surface (a primary low-temperature reheater vertical section and a secondary low-temperature reheater vertical section), a secondary low secondary horizontal section (a primary low-temperature reheater horizontal section and a secondary low-temperature reheater horizontal section), a high-temperature-level gas heater and an economizer (a front economizer, a middle economizer and a rear economizer) which are arranged in 3 flues respectively, heat is transferred to the heating surfaces of all levels (steam is heated in the heating surfaces of all levels and then respectively enters the heating surface of the next level), and then enters an air preheater and the low-temperature-level gas heater, so that the smoke exhaust temperature of a boiler is further reduced, hot air heated by the air preheater is sent to the gas burner or an air-burning nozzle, and is combusted with gas in a hearth;
on the other hand, the gas (blast furnace gas or mixed gas of a blast furnace and a converter) firstly passes through the low-temperature stage gas heater, the low-temperature stage gas heater exchanges heat with the flue gas, so that the temperature of the flue gas discharged by the boiler after heat exchange is reduced, the temperature of the gas after heat absorption by the low-temperature stage gas heater is increased, the heated gas enters the high-temperature stage gas heater, and the further heated gas is connected to the burner.
In the above, because the front flue gas adjusting baffle, the middle flue gas adjusting baffle and the rear flue gas adjusting baffle are respectively arranged at the outlets of the three flues (the front flue, the middle flue and the rear flue) at the tail part, the 3 baffles adjust the steam temperature of the primary reheating and the secondary reheating by adjusting the flue gas proportion in the three flues.
Example 2
On the basis of the double reheat gas boiler provided in embodiment 1, in this embodiment, taking a 135MW parameter gas boiler project as an example, the gas heaters are arranged in two stages, namely, a high-temperature stage and a low-temperature stage, the low-temperature stage gas heater is arranged at the outlet of the air preheater, and the high-temperature stage gas heater is arranged in the rear flue at the tail of the boiler. The low-temperature grade gas heater heats the gas temperature from 40 ℃ to 165 ℃, and the exhaust gas temperature is reduced from 205 ℃ to 140 ℃. 30% of flue gas quantity passes through a rear tail flue under the BMCR working condition, the flue gas is used for a high-temperature-grade gas heater, and the flue gas portion of the rear flue can play the roles of balancing first-time low-heat re-absorption and second-time low-heat re-absorption, adjusting the temperature of reheated steam and matching the flue gas resistance among three flues; the temperature of the flue gas in the tail rear branch flue is reduced from 598 ℃ to 432 ℃, and the temperature of the coal gas is further heated from 165 ℃ to 265 ℃.
Compared with the existing boiler with double flues at the tail part, the embodiment can further heat the coal gas, improve the temperature of the coal gas, recover heat, reduce the temperature of exhaust smoke, improve the efficiency of the boiler and be beneficial to the safe and efficient operation of the boiler.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (6)
1. The utility model provides a two reheat gas boiler, includes boiler furnace, connects in boiler furnace's horizontal flue, its characterized in that still includes:
the inlet section of the tail flue is divided into three front flues, middle branch flues and rear branch flues which are arranged in parallel and are arranged from near to far relative to a boiler furnace; a low-temperature reheater and an economizer are sequentially arranged in the front flue and the middle flue along the flow direction of flue gas, and a high-temperature coal gas heater and an economizer are sequentially arranged in the rear flue along the flow direction of flue gas;
and a flue gas inlet of the low-temperature-level gas heater is connected with an outlet section of the tail flue, and the gas heated by the low-temperature-level gas heater is introduced into a gas inlet of the high-temperature-level gas heater.
2. The double reheat gas boiler of claim 1, wherein flue gas adjusting baffles are provided at the outlets of the front flue, the middle flue and the rear flue.
3. The double reheat gas boiler as set forth in claim 1, wherein a platen superheater is provided at the top of the boiler furnace, a high temperature superheater is provided at the corner section of the boiler furnace, and a primary high temperature reheater and a secondary high temperature reheater are provided in sequence in the horizontal flue of the boiler furnace.
4. The double reheat gas boiler as set forth in claim 1, wherein the inlet section of said back pass is divided into a front flue, a middle branch flue and a back flue by a wall packing.
5. The double reheat gas boiler of claim 1, wherein the low temperature reheater in the front flue and the middle flue includes a low temperature reheater vertical section and a low temperature reheater horizontal section connected, and the low temperature reheater vertical section and the low temperature reheater horizontal section are arranged in sequence along the flue gas flow direction.
6. The double reheat gas boiler of claim 1, wherein an air preheater is provided in the outlet section of the tail flue, and the hot air heated by the air preheater is fed to the gas burner or the over fire air nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110719846.0A CN113432109B (en) | 2021-06-28 | 2021-06-28 | Double reheating gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110719846.0A CN113432109B (en) | 2021-06-28 | 2021-06-28 | Double reheating gas boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113432109A CN113432109A (en) | 2021-09-24 |
| CN113432109B true CN113432109B (en) | 2023-03-07 |
Family
ID=77755127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110719846.0A Active CN113432109B (en) | 2021-06-28 | 2021-06-28 | Double reheating gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113432109B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110558B (en) * | 2021-11-12 | 2023-04-25 | 东方电气集团东方锅炉股份有限公司 | Reheat steam temperature control method of secondary reheat boiler based on flue gas baffle adjustment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006064188A (en) * | 2004-08-24 | 2006-03-09 | Babcock Hitachi Kk | Method and device for controlling reheater steam temperature for boiler |
| CN106247304A (en) * | 2016-08-31 | 2016-12-21 | 东方电气集团东方锅炉股份有限公司 | The double reheat boiler shape that a kind of afterbody three flue is arranged |
| CN106969638A (en) * | 2017-04-01 | 2017-07-21 | 江苏省冶金设计院有限公司 | Rotary hearth furnace fume afterheat gradient utilization system and application method |
| CN108119888A (en) * | 2018-01-26 | 2018-06-05 | 唐山瑞丰钢铁（集团）有限公司 | The subcritical gas generating system of superhigh temperature |
| CN208042106U (en) * | 2017-12-27 | 2018-11-02 | 广东东实开能能源有限公司 | A kind of coal gas high-temperature high-voltage power generation system |
| CN209196815U (en) * | 2018-12-06 | 2019-08-02 | 杭州锅炉集团股份有限公司 | The subcritical single reheat blast furnace gas boiler of superhigh temperature |
| CN110131699A (en) * | 2019-06-04 | 2019-08-16 | 中冶南方都市环保工程技术股份有限公司 | A kind of overcritical low-heat value gas electricity generation system and method |
| CN209445339U (en) * | 2018-11-20 | 2019-09-27 | 汤海军 | A kind of energy-saving and environment-friendly exhaust gas electricity generation boiler |
| CN211902933U (en) * | 2020-03-30 | 2020-11-10 | 哈尔滨锅炉厂有限责任公司 | High-low temperature gas heater series structure for gas boiler |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052407B (en) * | 2016-08-08 | 2018-06-01 | 中冶华天南京工程技术有限公司 | heating furnace waste heat comprehensive utilization system |
| CN208566737U (en) * | 2018-07-05 | 2019-03-01 | 阳春新钢铁有限责任公司 | A kind of gas boiler reducing exhaust gas temperature |
-
2021
- 2021-06-28 CN CN202110719846.0A patent/CN113432109B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006064188A (en) * | 2004-08-24 | 2006-03-09 | Babcock Hitachi Kk | Method and device for controlling reheater steam temperature for boiler |
| CN106247304A (en) * | 2016-08-31 | 2016-12-21 | 东方电气集团东方锅炉股份有限公司 | The double reheat boiler shape that a kind of afterbody three flue is arranged |
| CN106969638A (en) * | 2017-04-01 | 2017-07-21 | 江苏省冶金设计院有限公司 | Rotary hearth furnace fume afterheat gradient utilization system and application method |
| CN208042106U (en) * | 2017-12-27 | 2018-11-02 | 广东东实开能能源有限公司 | A kind of coal gas high-temperature high-voltage power generation system |
| CN108119888A (en) * | 2018-01-26 | 2018-06-05 | 唐山瑞丰钢铁（集团）有限公司 | The subcritical gas generating system of superhigh temperature |
| CN209445339U (en) * | 2018-11-20 | 2019-09-27 | 汤海军 | A kind of energy-saving and environment-friendly exhaust gas electricity generation boiler |
| CN209196815U (en) * | 2018-12-06 | 2019-08-02 | 杭州锅炉集团股份有限公司 | The subcritical single reheat blast furnace gas boiler of superhigh temperature |
| CN110131699A (en) * | 2019-06-04 | 2019-08-16 | 中冶南方都市环保工程技术股份有限公司 | A kind of overcritical low-heat value gas electricity generation system and method |
| CN211902933U (en) * | 2020-03-30 | 2020-11-10 | 哈尔滨锅炉厂有限责任公司 | High-low temperature gas heater series structure for gas boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113432109A (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104676573B (en) | A kind of 720 DEG C of efficient ultra supercritical double reheat station boilers | |
| CN206469237U (en) | The subcritical gas boilers of 150MW of pure burning blast-furnace gas | |
| CN205717146U (en) | A kind of ultrahigh pressure coal gas boiler | |
| CN103591575A (en) | Supercritical circulating fluidized bed boiler of 350MW and vapor circulation method | |
| CN103343955A (en) | Comprehensive recycling boiler device of extra coal gas and saturated steam of steel plant | |
| CN113432109B (en) | Double reheating gas boiler | |
| WO2018099345A1 (en) | Low calorific value coal gas power generation system and power generation method | |
| CN102661600A (en) | Clean-burning blast furnace gas boiler | |
| CN108119888A (en) | The subcritical gas generating system of superhigh temperature | |
| CN110360589A (en) | One kind realizing the low NO of semicoke by chemical chain space divisionxMix the electric power station system and method for burning | |
| CN101493289B (en) | Residual heat comprehensive utilization method for carbon calciner | |
| CN207778402U (en) | The subcritical gas generating system of superhigh temperature | |
| CN106766966A (en) | A kind of heater for rolling steel waste heat recycling system | |
| CN105953217B (en) | The 1000MW ultra supercritical double reheat boilers of high reheat steam temperature wide regulating ratio | |
| CN205316287U (en) | Steam system suitable for steam condition is 700 DEG C of grades and above power plant boiler | |
| CN205048409U (en) | Improved generation gas boiler structure | |
| CN209196815U (en) | The subcritical single reheat blast furnace gas boiler of superhigh temperature | |
| CN103343954B (en) | Quality-improved lignite combustion or blending combustion system | |
| Sidorkin et al. | Assessment of combustion of oil shale refinery by-products in a TP-101 boiler | |
| CN205878138U (en) | Wide turndown ratio's of high reheat steam temperature 1000MW ultra supercritical double reheat boiler | |
| CN203656913U (en) | 350MW supercritical circulating fluidized bed boiler | |
| CN102563597A (en) | 300MW co-combustion blast furnace gas boiler and mounting method | |
| CN206479053U (en) | A kind of heater for rolling steel waste heat recycling system | |
| CN210050992U (en) | Coal-fired boiler type hot-blast stove | |
| CN209113826U (en) | With the exhaust heat stepped gasification system utilized of coal gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |