CN219243569U - Improve wind cigarette system of thermal efficiency - Google Patents
Improve wind cigarette system of thermal efficiency Download PDFInfo
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- CN219243569U CN219243569U CN202223587605.4U CN202223587605U CN219243569U CN 219243569 U CN219243569 U CN 219243569U CN 202223587605 U CN202223587605 U CN 202223587605U CN 219243569 U CN219243569 U CN 219243569U
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- flue gas
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- dust collector
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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 a flue gas system for improving the heat efficiency, which relates to the technical field of boilers and comprises a boiler body, wherein a screen type superheater is arranged in the boiler body, a flue gas outlet of the boiler body is connected with a gas-cooled separator, and the upper end of the gas-cooled separator is communicated with a burnout chamber; the burnout chamber is communicated with the circulator; the circulating device is communicated with the cyclone dust collector and the cloth bag dust collector, when the circulating device is used, the boiler body heats water in the screen type superheater, flue gas enters the air-cooled separator for separating flue gas from dust, the flue gas enters the circulating device after passing through the burnout chamber, and hot flue gas can preheat air in the secondary air preheater and the primary air preheater, so that heat exchange is realized; then the flue gas enters the cyclone dust collector to separate smoke and dust again, the flue gas is purified by the bag-type dust collector, and then the induced draft fan conveys the flue gas to a chimney to be discharged, so that the pollution to the atmosphere is avoided, and the environmental protection performance is improved.
Description
Technical Field
The utility model particularly relates to the technical field of boilers, in particular to a flue gas system for improving thermal efficiency.
Background
The boiler is an energy conversion device, the energy input to the boiler is chemical energy and electric energy in fuel, and the boiler outputs steam, high temperature water or organic heat carrier with certain heat energy. The boiler is a water container heated on fire, the boiler is a place where fuel is burned, and the boiler comprises two parts of a boiler and a boiler. The hot water or steam generated in the boiler can directly provide heat energy required by industrial production and people living, and can also be converted into mechanical energy through a steam power device or converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, and is mainly used for life and has a small amount of application in industrial production. Steam generating boilers are called steam boilers, often referred to simply as boilers, and are used in many thermal power stations, ships, locomotives and industrial and mining enterprises.
In order to improve the energy-saving effect of the boiler and the heat exchange efficiency, many manufacturers reform the flue gas and wind system of the boiler.
Chinese patent publication No. CN 215808447U discloses a boiler energy-saving air-smoke system, it includes circulating fluidized bed boiler and air preheater, both sides all are provided with four first coal feeders about the circulating fluidized bed boiler, the first coal feeder outside all is provided with the overgrate air pipe, circulating fluidized bed boiler right side is provided with the economizer, both sides all are provided with flue gas pipeline about the economizer right side, flue gas pipeline right side all is provided with air preheater, air preheater left side top all is provided with the tuber pipe, air preheater right side middle part all is provided with the forced draught blower, the forced draught blower inboard all is provided with the dust remover, the dust remover right side all is provided with the draught fan, the draught fan below is provided with the chimney, air preheater right side evenly is provided with two primary fans and two overgrate air machines.
The air and smoke system in the patent simply improves the air inlet system of the boiler to sequentially improve the combustion efficiency of the boiler, but the air inlet at the mouth of the boiler can lead to incomplete combustion of fuel to be discharged along with smoke, so that the fuel is not fully combusted, the fuel consumption is increased, and the boiler is difficult to achieve the effects of environmental protection and energy saving in operation; is not reusable for wasted fuel.
Disclosure of Invention
The utility model aims to provide a flue gas system for improving the heat efficiency, which is used for solving the problems that the prior flue gas system provided in the background art only simply improves an air inlet system of a boiler to sequentially improve the combustion efficiency of the boiler, but air inlet at a boiler mouth can lead incompletely combusted fuel to be discharged along with flue gas, so that the fuel is insufficiently combusted, the fuel consumption is increased, and the boiler is difficult to play the effects of environmental protection and energy saving when in operation; the technical problem that the wasted fuel can not be reused.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the air and smoke system for improving the heat efficiency comprises a boiler body, wherein a screen type superheater is arranged in the boiler body, an air-cooling separator is connected to a smoke outlet of the boiler body, and the upper end of the air-cooling separator is communicated with a burnout chamber; the burnout chamber is communicated and connected with the circulator; the circulator is communicated with the cyclone dust collector and the cloth bag dust collector; the cloth bag dust collector is connected with the induced draft fan through a pipeline, and the induced draft fan is also connected with the chimney through a pipeline;
a plurality of low-temperature economizers are sequentially arranged in the circulator from top to bottom, and a plurality of secondary air-air pre-heaters, a primary air-air pre-heater and an energy-saving device are arranged below the low-temperature economizers;
the bottom of the air-cooled separator is connected with the feed inlet of the boiler body.
As a further technical scheme of the utility model, the boiler body comprises a hearth, a main bed air chamber is arranged right below the hearth, and an ignition air valve is arranged below the main bed air chamber;
the two sides of the main bed air chamber are provided with a front auxiliary bed air chamber and a rear auxiliary bed air chamber, and auxiliary bed secondary air valves are arranged at the front auxiliary bed air chamber and the rear auxiliary bed air chamber.
As a further technical scheme of the utility model, a front wall secondary air valve and a rear wall secondary air valve are arranged at the two sides of the boiler body and near the screen type superheater.
As a further technical scheme of the utility model, the ignition air valve is connected with the primary air preheater through an air pipe; the plurality of primary air-air pre-heaters are mutually connected in series and are connected with the air outlet of the primary air blower; the primary air blower.
As a further technical scheme of the utility model, the secondary air valve of the auxiliary bed, the secondary air valve of the front wall and the secondary air valve of the rear wall are all connected with the secondary air pre-heaters through pipelines, a plurality of the secondary air pre-heaters are connected in series and are connected with the primary air blower, and a muffler is also connected at the air inlet of the primary air blower.
As a further technical scheme of the utility model, a material-reversing fluidization air valve is also arranged at the joint of the air-cooled separator and the boiler body, and the material-reversing fluidization air valve is connected with a recirculation fan through a pipeline; the air inlet of the recirculation fan is connected to a pipeline between the induced draft fan and the chimney through a pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
1. when the air conditioner is used, the boiler body heats water in the screen type superheater so as to form steam, so that the steam is convenient to use later, the flue gas enters the air-cooled separator to separate the flue gas from dust, the flue gas enters the circulator after being burnt out of the chamber, and the hot flue gas can preheat air in the secondary air preheater and the primary air preheater so as to realize heat exchange; then the flue gas enters a cyclone dust collector to separate smoke dust again, the flue gas is purified by a bag-type dust collector, dust in the flue gas is reduced, and finally the flue gas is conveyed to a chimney by a draught fan to be discharged, so that the discharge quality of the flue gas is improved, and the pollution to the atmosphere is avoided;
2. according to the utility model, the primary fan conveys external cold air into the primary air-air preheater for preheating treatment, and then conveys the cold air to the ignition air valve through the pipeline to provide hot air for combustion supporting of the boiler body, so that the humidity of air can be reduced, the condition that the temperature in a hearth is reduced due to the entering of the cold air is avoided, and the thermal efficiency of the boiler is improved;
3. according to the utility model, the secondary air blower conveys external cold air into the secondary air preheater for preheating treatment, and then conveys the cold air into the secondary air valve of the secondary bed, the secondary air valve of the front wall and the secondary air valve of the rear wall through pipelines, so that the air content in a hearth is increased, the combustion effect of flame is ensured, and the combustion effect of fuel is improved;
4. according to the utility model, as a plurality of air inlets are formed, insufficient fuel is inevitably discharged along with flue gas, and the insufficient fuel is returned to the boiler body under the action of the air-cooled separator, so that the recycling of combustible materials is realized, the combustion effect of the materials is greatly improved, a better energy-saving effect is achieved, and the production cost of enterprises is reduced; the recirculation fan conveys the hot air output by the induced draft fan to the position of the material reversing fluidization air valve through a pipeline, blows the insufficiently combusted materials, ensures that the materials return to the hearth, and improves the feeding efficiency.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged schematic view of fig. 1 at a in the present utility model.
Fig. 3 is an enlarged schematic view of fig. 1 at B in the present utility model.
Fig. 4 is a schematic view of a part of the structure of fig. 1 in the present utility model.
In the figure: the boiler comprises a boiler body, a 2-screen superheater, a 3-air-cooled separator, a 4-burnout chamber, a 5-circulator, a 6-secondary air preheater, a 7-primary air preheater, an 8-economizer, a 9-cyclone dust collector, a 10-bag dust collector, an 11-induced draft fan, a 12-chimney, a 13-recirculation fan, a 14-secondary fan, a 15-primary fan, a 16-material-reversing fluidization air valve, a 17-secondary bed secondary air valve, an 18-ignition air valve, a 19-front wall secondary air valve and a 20-back wall secondary air valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, in an embodiment of the present utility model, a flue gas system for improving thermal efficiency includes a boiler body 1, wherein a screen superheater 2 is disposed in the boiler body 1, and a gas-cooled separator 3 is connected to a flue gas outlet of the boiler body 1, and an upper end of the gas-cooled separator 3 is communicated with a burnout chamber 4; the burnout chamber 4 is communicated and connected with the circulator 5; the circulator 5, the cyclone dust collector 9 and the cloth bag dust collector 10 are communicated; the bag-type dust collector 10 is connected with a draught fan 11 through a pipeline, and the draught fan 11 is also connected with a chimney 12 through a pipeline;
a plurality of low-temperature economizers are sequentially arranged in the circulator 5 from top to bottom, and a plurality of secondary air-air pre-heaters 6, a primary air-air pre-heater 7 and an economizer 8 are arranged below the low-temperature economizers;
the bottom of the air-cooled separator 3 is connected with the feed inlet of the boiler body 1.
By adopting the technical scheme, when the boiler is used, the boiler body 1 heats water in the screen type superheater 2 so as to form steam, so that the steam is convenient to use later, the flue gas enters the air-cooled separator 3 for separating the flue gas from dust, the flue gas enters the circulator 5 after passing through the burnout chamber 4, and hot flue gas can preheat air in the secondary air preheater 6 and the primary air preheater 7 so as to realize heat exchange; and then the flue gas enters the cyclone dust collector 9 to separate smoke and dust again, and then the flue gas is purified by the bag-type dust collector 10, so that dust in the flue gas is reduced, and finally the flue gas is conveyed to the chimney 12 by the induced draft fan 11 to be discharged, so that the discharge quality of the flue gas is improved, and the pollution to the atmosphere is avoided.
In this embodiment, the boiler body 1 includes a furnace, and a main bed air chamber is disposed right below the furnace, and an ignition air valve 18 is disposed below the main bed air chamber;
a front auxiliary bed air chamber and a rear auxiliary bed air chamber are arranged on two sides of the main bed air chamber, and auxiliary bed secondary air valves 17 are arranged at the positions of the front auxiliary bed air chamber and the rear auxiliary bed air chamber.
Specifically, the ignition air valve 18 is connected with the primary air preheater 7 through an air pipe; the plurality of primary air pre-heaters 7 are mutually connected in series and are connected with the air outlet of the primary air blower 15; the primary air blower 15.
Through adopting above-mentioned technical scheme, primary fan 15 carries the warm-air treatment in carrying primary air preheater 7 with external cold wind, later carries to ignition blast gate 18 department through the pipeline, for the combustion-supporting of boiler body 1 provides hot-blast to this humidity that can reduce the air, avoid cold wind to get into and the condition that leads to the temperature to reduce appears in the furnace, has improved the thermal efficiency of boiler.
In this embodiment, a front wall secondary air valve 19 and a rear wall secondary air valve 20 are disposed on both sides of the boiler body 1 and near the screen superheater 2.
Specifically, the secondary air valve 17, the secondary air valve 19 on the front wall and the secondary air valve 20 on the rear wall are all connected with the secondary air pre-heater 6 through pipelines, a plurality of the secondary air pre-heaters 6 are connected in series and are connected with the primary air fan 15, and a muffler is further connected at the air inlet of the primary air fan 15.
Through adopting above-mentioned technical scheme, secondary air machine 14 carries the external cold wind to the secondary air preheater 6 in carry out preheating treatment, later carries in to secondary air valve 17 of auxiliary bed, preceding wall secondary air valve 19 and back wall secondary air valve 20 through the pipeline to this increases the air content in the furnace, guarantees the combustion effect of flame, improves the combustion effect of fuel.
In the embodiment, a material-reversing fluidization air valve 16 is further arranged at the joint of the air-cooled separator 3 and the boiler body 1, and the material-reversing fluidization air valve 16 is connected with the recirculation fan 13 through a pipeline; the air inlet of the recirculating fan 13 is connected with a pipeline between the induced draft fan 11 and the chimney 12 through a pipeline.
As further optimization, because of the air inlet at multiple positions, insufficient fuel is inevitably floated along with the flue gas, and the insufficient fuel is returned to the boiler body 1 under the action of the air-cooled separator 3, so that the recycling of combustible materials is realized, the combustion effect of the materials is greatly improved, a better energy-saving effect is achieved, and the production cost of enterprises is reduced; the recirculation fan 13 conveys the hot air output by the induced draft fan 11 to the position of the material reversing fluidization air valve 16 through a pipeline, blows the insufficiently combusted materials, ensures that the materials are returned to the hearth, and improves the feeding efficiency.
The working principle of the utility model is as follows: when the boiler is used, the boiler body 1 heats water in the screen type superheater 2 so as to form steam, so that the steam is convenient to use later, the flue gas enters the air-cooled separator 3 and then is separated from dust, the flue gas enters the circulator 5 after passing through the burnout chamber 4, and hot flue gas can preheat air in the secondary air preheater 6 and the primary air preheater 7 so as to realize heat exchange; then the flue gas enters a cyclone dust collector 9 to separate smoke and dust again, the flue gas is purified by a bag-type dust collector 10, dust in the flue gas is reduced, and finally the flue gas is conveyed to a chimney 12 by a draught fan 11 to be discharged, so that the discharge quality of the flue gas is improved, and the pollution to the atmosphere is avoided;
the primary air blower 15 conveys external cold air into the primary air preheater 7 for preheating treatment, and then conveys the cold air into the ignition air valve 18 through a pipeline to supply hot air for combustion supporting of the boiler body 1, so that the humidity of the air can be reduced, the condition that the temperature in a hearth is reduced due to the entering of the cold air is avoided, and the heat efficiency of the boiler is improved;
the secondary air blower 14 conveys external cold air into the secondary air preheater 6 for preheating treatment, and then conveys the cold air into the secondary air valve 17 of the secondary bed, the secondary air valve 19 of the front wall and the secondary air valve 20 of the rear wall through pipelines, so that the air content in a hearth is increased, the combustion effect of flame is ensured, and the combustion effect of fuel is improved;
because of the air inlet at a plurality of positions, the fuel which is not fully combusted is inevitably floated along with the flue gas, and the fuel which is not fully combusted returns to the boiler body 1 under the action of the air-cooled separator 3, thereby realizing the recycling of combustible materials, greatly improving the combustion effect of the materials, playing a good role in saving energy and reducing the production cost of enterprises; the recirculation fan 13 conveys the hot air output by the induced draft fan 11 to the position of the material reversing fluidization air valve 16 through a pipeline, blows the insufficiently combusted materials, ensures that the materials are returned to the hearth, and improves the feeding efficiency.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A flue gas system for improving thermal efficiency, characterized in that: the boiler comprises a boiler body (1), wherein a screen type superheater (2) is arranged in the boiler body (1), an air-cooling separator (3) is connected to a smoke outlet of the boiler body (1), and the upper end of the air-cooling separator (3) is communicated with a burnout chamber (4); the burnout chamber (4) is communicated and connected with the circulator (5); the circulator (5) is communicated with the cyclone dust collector (9) and the cloth bag dust collector (10); the cloth bag dust collector (10) is connected with the induced draft fan (11) through a pipeline, and the induced draft fan (11) is also connected with the chimney (12) through a pipeline;
a plurality of low-temperature economizers are sequentially arranged in the circulator (5) from top to bottom, and a plurality of secondary air-air pre-heaters (6), primary air-air pre-heaters (7) and an energy-saving device (8) are arranged below the low-temperature economizers;
the bottom of the air-cooled separator (3) is connected with the feed inlet of the boiler body (1).
2. The thermal efficiency enhancement air and smoke system according to claim 1, wherein: the boiler body (1) comprises a hearth, a main bed air chamber is arranged right below the hearth, and an ignition air valve (18) is arranged below the main bed air chamber;
front auxiliary bed air chambers and rear auxiliary bed air chambers are arranged on two sides of the main bed air chamber, and auxiliary bed secondary air valves (17) are arranged at the front auxiliary bed air chambers and the rear auxiliary bed air chambers.
3. The thermal efficiency enhancement air and smoke system according to claim 2, wherein: the boiler is characterized in that a front wall secondary air valve (19) and a rear wall secondary air valve (20) are arranged on two sides of the boiler body (1) and close to the screen type superheater (2).
4. The thermal efficiency enhancement air and smoke system according to claim 2, wherein: the ignition air valve (18) is connected with the primary air-air preheater (7) through an air pipe; the plurality of primary air pre-heaters (7) are mutually connected in series and are connected with the air outlet of the primary air blower (15); the primary air blower (15).
5. A thermal efficiency enhancement air and smoke system according to claim 3, wherein: the auxiliary bed secondary air valve (17), the front wall secondary air valve (19) and the rear wall secondary air valve (20) are all connected with the secondary air pre-heaters (6) through pipelines, a plurality of the secondary air pre-heaters (6) are connected in series and connected with the primary air fan (15), and a muffler is further connected at the air inlet of the primary air fan (15).
6. The thermal efficiency enhancement air and smoke system according to claim 1, wherein: the joint of the air-cooled separator (3) and the boiler body (1) is also provided with a material-reversing fluidization air valve (16), and the material-reversing fluidization air valve (16) is connected with the recirculation fan (13) through a pipeline; the air inlet of the recirculation fan (13) is connected to a pipeline between the induced draft fan (11) and the chimney (12) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223587605.4U CN219243569U (en) | 2022-12-30 | 2022-12-30 | Improve wind cigarette system of thermal efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223587605.4U CN219243569U (en) | 2022-12-30 | 2022-12-30 | Improve wind cigarette system of thermal efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219243569U true CN219243569U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223587605.4U Active CN219243569U (en) | 2022-12-30 | 2022-12-30 | Improve wind cigarette system of thermal efficiency |
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|---|---|
| CN (1) | CN219243569U (en) |
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2022
- 2022-12-30 CN CN202223587605.4U patent/CN219243569U/en active Active
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