CN212901578U - Adjacent furnace flue gas rushing system - Google Patents
Adjacent furnace flue gas rushing system Download PDFInfo
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- CN212901578U CN212901578U CN202021538244.2U CN202021538244U CN212901578U CN 212901578 U CN212901578 U CN 212901578U CN 202021538244 U CN202021538244 U CN 202021538244U CN 212901578 U CN212901578 U CN 212901578U
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- boiler combustion
- flue gas
- air preheater
- combustion system
- fan
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses an adjacent stove flue gas dashes system of changeing belongs to thermal power technical field. The system comprises: at least two boiler combustion systems; the boiler combustion system includes: the system comprises a coal mill, a combustor, a hearth, an air preheater, a hot primary fan and a hot secondary fan; the burner is connected to the hearth; the outlet of the coal mill is connected with the inlet of the combustor; the outlet of the hearth is connected with the inlet of the air preheater. The utility model discloses in, introduce another boiler combustion system through the high temperature flue gas among one of them boiler combustion system through the pipeline, preheat each equipment among another boiler combustion system to when making another boiler combustion system light on, because the high temperature flue gas is to the heating of each part before lighting a fire, make the temperature of each part improve, carried out preheating treatment in advance, saved the partial loss of the oil for ignition, shortened the start-up time, reduced the heat loss of start-up.
Description
Technical Field
The utility model relates to a thermal power technology field, in particular to adjacent stove flue gas dashes system of changeing.
Background
The pulverized coal fired boiler of the power plant consumes a large amount of fuel oil for ignition starting, shutdown and low-load combustion supporting. In recent years, with the continuous rising of the oil price expansion by nearly 50%, the ignition combustion-supporting cost of the pulverized coal fired boiler of the power plant is greatly increased, and how to reduce the oil for the pulverized coal fired boiler of the power plant is urgent.
Therefore, in order to reduce the ignition combustion-supporting cost of the pulverized coal fired boiler of the power plant, an adjacent boiler flue gas flushing system is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to reduce the ignition combustion-supporting cost of the pulverized coal fired boiler of the power plant, the utility model provides an adjacent stove flue gas rushing-to-turn system. The system comprises: at least two boiler combustion systems; the boiler combustion system includes: the system comprises a coal mill, a combustor, a hearth, an air preheater, a hot primary fan and a hot secondary fan; the burner is connected to the hearth; the outlet of the coal mill is connected with the inlet of the combustor; the outlet of the hearth is connected with the inlet of the air preheater, and the outlets of the air preheater are connected with the inlet of the combustor and the inlet of the coal mill; the hot secondary fan is connected between the air preheater and the combustor; the hot primary fan is connected between the air preheater and the coal mill; the boiler combustion systems are communicated through pipelines.
Furthermore, a hot air adjusting door is arranged on the pipeline.
Furthermore, an adjacent boiler isolation door is arranged on the pipeline.
Furthermore, an ash discharging door is further arranged on the pipeline.
Further, the air preheater is also connected with a chimney.
Further, an induced draft fan is connected between the air preheater and the chimney.
Furthermore, a dust remover is connected between the air preheater and the induced draft fan.
The utility model provides a technical scheme's beneficial effect is: the utility model discloses in, introduce another boiler combustion system through the high temperature flue gas among one of them boiler combustion system through the pipeline, preheat each equipment among another boiler combustion system to when making another boiler combustion system light on, because the high temperature flue gas is to the heating of each part before lighting a fire, make the temperature of each part improve, carried out preheating treatment in advance, saved the partial loss of the oil for ignition, shortened the start-up time, reduced the heat loss of start-up. In addition, the boiler combustion systems can be mutually standby, when one of the boiler combustion systems fails due to primary air, the other boiler combustion system can provide standby air volume for the other boiler combustion system, and the continuity and the economy of boiler operation are improved.
Drawings
Fig. 1 is a schematic structural diagram of an adjacent furnace flue gas flushing system provided by the utility model.
Reference numerals: 1-a coal mill; 2-a burner; 3-hearth; 4-an air preheater; 5-a hot primary air blower; 6-a hot secondary fan; 7-a pipeline; 8-a hot air adjusting door; 9-adjacent boiler isolation door; 10-ash door; 11-a chimney; 12-a draught fan; 13-dust remover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The use of the terms "upper", "lower", "left", "right" and the like in the present invention is for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 1 is a schematic structural diagram of an adjacent furnace flue gas flushing system provided by the utility model. Referring to fig. 1, the system includes: at least two boiler combustion systems; the boiler combustion system includes: the device comprises a coal mill 1, a combustor 2, a hearth 3, an air preheater 4, a hot primary air fan 5 and a hot secondary air fan 6; the burner 2 is connected to the hearth 3; the outlet of the coal mill 1 is connected with the inlet of the combustor 2; the outlet of the hearth 3 is connected with the inlet of an air preheater 4, and the outlets of the air preheater 4 are connected with the inlet of the combustor 2 and the inlet of the coal mill 1; the hot secondary fan 6 is connected between the air preheater 4 and the burner 2; the hot primary air fan 5 is connected between the air preheater 4 and the coal mill 1; the boiler combustion systems are communicated through pipelines 7.
It should be noted that there are at least two boiler combustion systems in the present system, and two are exemplified in the present invention. Connecting the first boiler combustion system with a second boiler combustion system through a pipeline 7; before first boiler combustion system opened, open second boiler combustion system earlier, the pulverized coal that coal pulverizer 1 among the second boiler combustion system ground was made carries by hot primary air fan 5 and gets into combustor 2, then send into 3 burning in furnace through combustor 2, the high temperature flue gas of burning is in the boiler after releasing heat, flow in air heater 4, hot-air and the high temperature flue gas that come out from air heater 4 are divided into two strands, one strand gets into coal pulverizer 1 (primary air) through hot primary air fan 5, another strand is sent into furnace 3 (hot overgrate air) after directly getting into combustor 2 through hot secondary air fan 6.
After the second boiler combustion system is started, high-temperature flue gas enters the first boiler combustion system through the pipeline 7, the high-temperature flue gas flows through the coal mill 1, the combustor 2, the hearth 3, the air preheater 4 and the like of the first boiler combustion system and exchanges heat with the components, the body temperature of the components is increased, the starting time is longer, the higher the temperature of the components is, a high-temperature and high-heat preheating ignition premise is formed for the hearth 3 of the first boiler combustion system, and therefore when the first boiler combustion system is ignited, the temperature of each component is increased due to the fact that the high-temperature flue gas heats each component before ignition, preheating treatment is conducted in advance, partial loss of ignition oil is saved, the starting time is shortened, and heat loss of starting is reduced. Secondly, first boiler combustion system and second boiler combustion system can be each other for reserve, and when one of them was because of the wind trouble, the other can provide reserve amount of wind for it, has improved boiler operation's continuity and economic nature. In addition, if more boiler combustion systems need to be connected, the second boiler combustion system can be connected with a third boiler combustion system through a pipeline, and the like.
Further, a hot air adjusting door 8 is arranged on the pipeline 7. It should be noted that the duct 7 is provided with a hot air adjusting door 8, and the hot air adjusting door 8 can adjust the high-temperature flue gas air volume of one of the boiler combustion systems to enter the other boiler combustion system connected thereto.
Further, an adjacent boiler isolation door 9 is arranged on the pipeline 7. It should be noted that two connected boiler combustion systems can be isolated through the adjacent boiler isolation door 9, and the adjacent boiler combustion systems can be opened when in use.
Further, the duct 7 is also provided with a dust door 10. It should be noted that, when high-temperature flue gas is transported through the duct 7 for a long time, ash burning pulverized coal is generated in the duct 7, and the generated ash can be discharged through the ash discharge door 10.
Further, the air preheater 4 is also connected to the stack 11. It should be noted that after one of the boiler combustion systems completes preheating the other boiler combustion system, the high-temperature flue gas combusted in the furnace 3 of the boiler combustion system releases heat in the boiler, and then flows to the air preheater 4, and can be discharged through the chimney 11.
Further, an induced draft fan 12 is connected between the air preheater 4 and the chimney 11. So that the high-temperature flue gas can be introduced into the chimney 11 through the induced draft fan 12.
Further, a dust remover 13 is connected between the air preheater 4 and the induced draft fan 12. So that the dust in the high temperature flue gas can be separated by the dust separator 13.
The utility model discloses a complete work flow can be: before first boiler combustion system opens, open second boiler combustion system earlier, coal pulverizer 1 grinds the coal cinder into the buggy, carry the buggy by hot primary air fan 5 and get into combustor 2, then send into 3 burning in furnace through combustor 2, the high temperature flue gas of burning is after releasing heat in the boiler, flow to air heater 4 in, it is divided into two strands after 4 come out from air heater, one is by getting into coal pulverizer 1 through hot primary air fan 5, another strand is sent into furnace 4 after 6 entering combustor 2 of hot secondary air fan directly. After the second boiler combustion system is opened, the hot air adjusting door 8 and the adjacent boiler isolation door 9 are opened, high-temperature flue gas is introduced into the first boiler combustion system through the pipeline 7, all equipment of the first boiler combustion system is preheated, and the ash door 10 can be opened to discharge accumulated ash in the using process. After preheating, can close isolation door 9 and isolate, the hot air that comes out from air heater 4 this moment is divided into two strands, gets into coal pulverizer 1 and combustor 2 respectively, and the high temperature flue gas that comes out from air heater 4 introduces through draught fan 12, discharges by chimney 11 after removing dust through dust remover 13.
It is worth explaining, in the utility model discloses in, introduce another boiler combustion system through the high temperature flue gas among the pipeline with one of them boiler combustion system, preheat each equipment among another boiler combustion system, thereby when making another boiler combustion system ignite, because the heating of high temperature flue gas to each part before the ignition, make the temperature of each part improve, carry out preheating treatment in advance, the partial loss of the oil for the ignition has been saved, the activation time has been shortened, the heat loss of start-up has been reduced. In addition, the boiler combustion systems can be mutually standby, when one of the boiler combustion systems fails due to primary air, the other boiler combustion system can provide standby air volume for the other boiler combustion system, and the continuity and the economy of boiler operation are improved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. An adjacent furnace flue gas rushing-transferring system, which is characterized by comprising: at least two boiler combustion systems; the boiler combustion system includes: the device comprises a coal mill (1), a combustor (2), a hearth (3), an air preheater (4), a primary hot air fan (5) and a secondary hot air fan (6);
the burner (2) is connected to the hearth (3); the outlet of the coal mill (1) is connected with the inlet of the combustor (2); the outlet of the hearth (3) is connected with the inlet of the air preheater (4), and the outlets of the air preheater (4) are connected with the inlet of the combustor (2) and the inlet of the coal mill (1); the hot overfire air fan (6) is connected between the air preheater (4) and the burner (2); the hot primary fan (5) is connected between the air preheater (4) and the coal mill (1); the boiler combustion systems are communicated through pipelines (7).
2. The adjacent furnace flue gas flushing system according to claim 1, wherein a hot air adjusting door (8) is arranged on the pipeline (7).
3. The adjacent furnace flue gas flushing system according to claim 1, wherein the pipeline (7) is further provided with an isolation door (9).
4. The adjacent furnace flue gas flushing system according to claim 1, wherein the pipeline (7) is further provided with an ash door (10).
5. The adjacent furnace flue gas washover system according to claim 1, characterized in that the air preheater (4) is further connected with a chimney (11).
6. The adjacent furnace flue gas washover system according to claim 5, characterized in that an induced draft fan (12) is connected between the air preheater (4) and the chimney (11).
7. The adjacent furnace flue gas flushing system according to claim 6, wherein a dust remover (13) is connected between the air preheater (4) and the induced draft fan (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021538244.2U CN212901578U (en) | 2020-07-29 | 2020-07-29 | Adjacent furnace flue gas rushing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021538244.2U CN212901578U (en) | 2020-07-29 | 2020-07-29 | Adjacent furnace flue gas rushing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212901578U true CN212901578U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021538244.2U Active CN212901578U (en) | 2020-07-29 | 2020-07-29 | Adjacent furnace flue gas rushing system |
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| CN (1) | CN212901578U (en) |
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2020
- 2020-07-29 CN CN202021538244.2U patent/CN212901578U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A flue gas impulse rotation system of adjacent furnace Effective date of registration: 20210813 Granted publication date: 20210406 Pledgee: Bank of Xi'an Limited by Share Ltd. future branch Pledgor: SHAANXI WANFANG ENERGY SAVING SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021610000210 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |