CN208372792U - The smoke processing system of garbage incinerating power plant - Google Patents
The smoke processing system of garbage incinerating power plant Download PDFInfo
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- CN208372792U CN208372792U CN201820524701.9U CN201820524701U CN208372792U CN 208372792 U CN208372792 U CN 208372792U CN 201820524701 U CN201820524701 U CN 201820524701U CN 208372792 U CN208372792 U CN 208372792U
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Abstract
The utility model provides a kind of smoke processing system of garbage incinerating power plant comprising: gas cleaning subsystem is configured to carry out purified treatment to the flue gas that waste incinerator is discharged；White device is taken off, is configured to that the flue gas is made to be changed into de- white cigarette gas；First flue gas-flue gas heat-exchange unit is configured to make flue gas by the gas cleaning subsystem processes and the de- white cigarette gas to carry out heat exchange, and flue gas by the gas cleaning subsystem processes and described take off take off white device into described after white flue gas heat exchange；Gas fired-boiler is configured to generate high-temperature flue gas using the biogas combustion generated in trash repository；Second flue gas-flue gas heat-exchange unit is configured to that de- white cigarette gas is made to carry out heat exchange with from high-temperature flue gas, and the de- white cigarette gas after heating is discharged by chimney.The smoke processing system of garbage incinerating power plant according to the present utility model, which has saved the energy and relieved biogas, leads to the security risk of waste incineration furnace coking.
Description
Technical field
The utility model relates to flue gas of refuse burning processing techniques, in particular to a kind of cigarette of garbage incinerating power plant
Gas processing system.
Background technique
As the treating capacity of garbage incinerating power plant is increasing, garbage incinerating power plant scale is increasing, rubbish
Storage amount also increases with it, therefore a large amount of biogas generated are difficult to handle.In existing garbage incinerating power plant, major part is all
Biogas is returned spray waste incinerator to burn, but return spray biogas to upset the flow field in waste incinerator, leads to incinerator knot
Burnt phenomenon is serious, buries major hidden danger for the safe operation of garbage incinerating power plant；Also there is burning power plant will be in trash repository
The biogas of generation draws building and directly burns, although this method effectively prevents burning furnace coking, heat has been wasted, to rubbish
Rubbish burns power plant and causes the loss in economic benefit.
In addition, it is de- that there are a large amount of thermal loss, especially wet processes in current flue gas of garbage furnace treatment process
After sour and de- Cynanchum glaucescens, this is because before wet process depickling and Tuo Bai, former 110 DEG C or so of flue gas will cool to 45 DEG C or so, and
Take off it is white after flue gas also need again by GGH (flue gas-flue gas) heat exchanger and SGH (steam-flue gas) heat exchanger be heated to 120 DEG C with
On, and the steam that the SGH heat exchanger in process system needs to extract in steam turbine is heated, therefore reduces power plants generating electricity effect
Rate.
Therefore, it is necessary to a kind of smoke processing system of garbage incinerating power plant be proposed, at least partly to solve above-mentioned ask
Topic.
Utility model content
A series of concept of reduced forms is introduced in utility model content part, this will be in specific embodiment part
Middle further description.The utility model content part of the utility model is not meant to attempt to limit claimed
Technical solution key feature and essential features, do not mean that the guarantor for attempting to determine technical solution claimed more
Protect range.
In order at least be partially solved the above problem, the utility model discloses at a kind of flue gas of garbage incinerating power plant
Reason system comprising:
Gas cleaning subsystem, the gas cleaning subsystem are configured to purify the flue gas that waste incinerator is discharged
Processing, to remove the pollutant in the flue gas；
Take off white device, it is described to take off white device and be configured to remove sour gas and moisture in the flue gas, make the flue gas
It is changed into de- white cigarette gas；
First flue gas-flue gas heat-exchange unit, the first flue gas-flue gas heat-exchange unit are configured to make by gas cleaning
The flue gas of system processing and the de- white cigarette gas carry out heat exchange, to heat the de- white cigarette gas, by gas cleaning
The flue gas of system processing and described take off take off white device into described after white flue gas heat exchange；
Gas fired-boiler, the gas fired-boiler are configured to generate high-temperature flue gas using the biogas combustion generated in trash repository；
Second flue gas-flue gas heat-exchange unit, the second flue gas-flue gas heat-exchange unit are configured to make from first flue gas-
The de- white cigarette gas of flue gas heat-exchange unit carries out heat exchange with the high-temperature flue gas from the gas fired-boiler, so that the de- white cigarette gas
Temperature further increases, and the de- white cigarette gas after heating is discharged by chimney.
In one embodiment of the utility model, the gas cleaning subsystem includes:
Extracting tower, the extracting tower are configured to carry out depickling to the flue gas that the garbage incinerator grates go out using deacidification agent
Processing, to remove the sour gas in the flue gas；
Dust-extraction unit, the dust-extraction unit are configured to be dusted processing to the flue gas by extracting tower processing, with
Remove the particulate matter in the flue gas；
Denitrification apparatus, the denitrification apparatus are configured to carry out denitration process to the flue gas Jing Guo the dust-extraction unit dedusting,
To remove the nitrogen oxides in the flue gas.
In one embodiment of the utility model, the gas cleaning subsystem further include:
Steam-flue gas heat-exchange unit, the steam-flue gas heat-exchange unit are configured to heat using the steam in temperature of power plant steam turbine
The flue gas handled by the dust-extraction unit.
In one embodiment of the utility model, the dust-extraction unit includes bag filter.
In one embodiment of the utility model, the denitrification apparatus includes SCR denitration device.
The smoke processing system of garbage incinerating power plant according to the present utility model, by increasing gas fired-boiler and flue gas-
Flue gas heat-exchange unit generates biogas generation high-temperature flue gas using trash repository and reaches required smoke evacuation temperature to heat de- white cigarette gas
Degree, has saved extraction flow of steam, improves the economic benefit of burning power plant, and due to utilizing gas fired-boiler after-flame mesh
The preceding biogas for needing back to spray waste incinerator, in the same of the biogas safely and efficiently generated using trash repository in burning power plant
When, having saved the energy and having relieved biogas leads to the security risk of waste incineration furnace coking.
Detailed description of the invention
The following drawings of the utility model is used to understand the utility model in this as a part of the utility model.Attached drawing
In show the embodiments of the present invention and its description, for explaining the principles of the present invention.
In attached drawing:
Fig. 1 shows the structural representation of the smoke processing system of the garbage incinerating power plant according to an embodiment of the present invention
Figure.
Description of symbols:
1 waste incinerator
2 extracting towers
3 dust-extraction units
4 steam-flue gas heat-exchange unit
5 denitrification apparatus
6 first flue gases-flue gas heat-exchange unit
7 take off white device
8 gas fired-boilers
9 second flue gases-flue gas heat-exchange unit
10 trash repositories
11 chimneys
100 are used for the smoke processing system of waste incineration combined power generation plant
Specific embodiment
In the following description, a large amount of concrete details are given more thoroughly to manage in order to provide to the utility model
Solution.It will be apparent, however, to one skilled in the art that the utility model embodiment may not need one or more
These details and be carried out.In other examples, in order to avoid obscuring with the utility model embodiment, for ability
Some technical characteristics well known to domain are not described.
In order to thoroughly understand the utility model embodiment, detailed structure will be proposed in following description.Obviously, this reality
The specific details that those skilled in the art is familiar with are not limited to the execution of new embodiment.The utility model it is preferable
Embodiment is described in detail as follows, however other than these detailed descriptions, the utility model can also have other embodiments.
In current waste incineration and generating electricity flue gas treating process, burn the flue gas of generation generally at 190 DEG C~220 DEG C into
Enter and carry out depickling in dry-process deacidification tower, about 150 DEG C of flue gas, which enters in deduster, after depickling divides the dust in flue gas
Drop to about 140 DEG C from and by flue-gas temperature, the flue gas again through SGH (steam-flue gas) heat exchanger be heated to 170 DEG C or so it is laggard
Row SCR denitration reaction, then again through GGH (flue gas-flue gas heat-exchange unit) and take off it is white after flue gas (about 45 DEG C) exchange heat, will take off
Flue gas after white is to 100 DEG C or so, and former flue gas is also cooled to 110 DEG C or so, last 100 DEG C take off it is white after flue gas warp
SGH (steam-flue gas heat-exchange unit) is heated to 120 DEG C or more and is emitted into atmosphere.Work is handled in existing flue gas of garbage furnace
In skill, there are after a large amount of thermal loss, especially wet process depickling and de- Cynanchum glaucescens, former 110 DEG C of flue gas will cool to 45 DEG C and take off
Bai Houzai is heated to 120 DEG C or more by GGH heat exchanger and SGH heat exchanger, and the SGH heat exchanger in process system needs to extract vapour
Steam in turbine is heated, therefore reduces power plants generating electricity efficiency.
In addition, as previously mentioned, the smoothness in waste incinerator can be disturbed and cause to burn by returning the biogas being sprayed onto waste incinerator
Furnace coking is burnt, buries major hidden danger for the safe operation of burning power plant.
The utility model proposes a kind of smoke processing system of garbage incinerating power plant based on this, to solve the above problems,
It is described in detail below with reference to smoke processing system of the Fig. 1 to the garbage incinerating power plant of an embodiment of the present invention.
The smoke processing system 100 of garbage incinerating power plant provided in this embodiment is used for combined power generation plant waste incineration
The flue gas that furnace generates is handled, and to reduce environmental pollution, and improves the economic benefit and generating efficiency in power plant, reduces power generation
The security risk of factory.
As shown in Figure 1, the smoke processing system 100 of garbage incinerating power plant provided in this embodiment includes extracting tower 2, removes
Dirt device 3, denitrification apparatus 5, the first flue gas-flue gas heat-exchange unit 6, takes off white device 7,8 and of gas fired-boiler at steam-flue gas heat-exchange unit 4
Second flue gas-flue gas heat-exchange unit 9.
Wherein, extracting tower 2, dust-extraction unit 3, steam-flue gas heat-exchange unit 4 and denitrification apparatus 5 form gas cleaning subsystem,
Flue gas for garbage incinerator 1 to be discharged carries out purified treatment, to remove the pollutant in the flue gas.
Specifically, extracting tower 2 is connected to the smoke exhaust system of waste incinerator 1, for waste incinerator 1 (such as
Furnace grate) generate flue gas carry out depickling processing, that is, removing flue gas in hydrogen chloride, sulfur dioxide, sulfur trioxide, fluorination
The sour gas such as hydrogen.Illustratively, in the present embodiment, extracting tower 2 is half-dried reaction tower, and deacidification agent uses Ca (OH)2.Rubbish
The flue gas of generation of burning away the refuse in incinerator 1 is entered in extracting tower 2 by pipeline via the smoke inlet of extracting tower 2, into de-
Flue gas in acid tower 2 is about 190 DEG C~220 DEG C, and deacidification agent is entered in extracting tower by deacidification agent entrance, with the acidity in flue gas
Gas reaction, to remove the sour gas in flue gas.Flue gas is passed through after 2 depickling of extracting tower processing and is discharged by exhanst gas outlet,
The temperature of flue gas is reduced to 150 DEG C or so at this time, then enters dedusting dress via the smoke inlet of dust-extraction unit 3 by connecting pipe
It sets in 3.
Dust-extraction unit 3 is configured to be dusted processing to the flue gas by the extracting tower 2 processing, to remove the flue gas
In particulate matter.Illustratively, in the present embodiment, dust-extraction unit 3 uses bag filter, and flue gas is after the processing of depickling 2
Into bag filter, it is dusted processing in bag filter, removes the particulate matters such as the flying dust in flue gas.Bag filter
It is a kind of sack cleaner, by filter bag trapping, removing particulate matter, mainly by upper box body, middle part cabinet, lower part box (ash
Bucket), the parts composed structure such as soot cleaning system and ash exhauster, use structure commonly used in the art, it is not limited here.At this
In embodiment, ash bucket preferably uses big grey bucket structure, that is, is open larger, to prevent from blocking.
Flue gas is discharged after the processing of dust-extraction unit 3 via the exhanst gas outlet of dust-extraction unit 3, at this time the temperature drop of flue gas
It is 140 DEG C or so, then passes through connecting pipe and enter in steam-flue gas heat-exchange unit 4.In steam-flue gas heat-exchange unit 4, flue gas
Heat exchange is carried out with the steam extracted out from the steam turbine (not shown) in power plant, to increase temperature, flue gas is in steam-flue gas heat exchange
170 DEG C of suitable denitration reaction are risen to temperature after steam heat-exchanging in device 4, are then entered in denitrification apparatus 5 by connecting pipe.
Denitrification apparatus 5 is configured to carry out denitration process to the flue gas Jing Guo 3 dedusting of dust-extraction unit, to remove the cigarette
Nitrogen oxides in gas.Illustratively, denitrification apparatus 5 is filled using SCR (selective catalytic reduction) denitration in the present embodiment
It sets.
Flue gas by gas cleaning subsystem purified treatment subsequently enters to take off and carries out taking off white processing in white device 7, i.e., into
One step removes moisture in sour gas and flue gas in flue gas, to be changed into de- white cigarette gas.Taking off white device 7 can be de- for wet process
Acid tower removes moisture and sour gas in flue gas in such a way that deacidification agent is by wet process depickling.Flue gas take off white device 7 take off it is white
Afterwards, temperature is down to about 65 DEG C or so by 100 DEG C or so, is unfavorable for being expelled in atmosphere from chimney 13, therefore also needs to de-
White flue gas is heated, to increase its temperature.
In the present embodiment, in order to make full use of the heat of the flue gas being discharged from denitrification apparatus 5, in denitrification apparatus 5 and de-
First flue gas-flue gas heat-exchange unit 6 is set between white device 7, not de- white cigarette gas from denitrification apparatus 5 and carrys out the white device 7 of autospasy
De- white cigarette gas heat exchange is carried out in the first flue gas-flue gas heat-exchange unit 6, after heat exchange, not taking off from denitrification apparatus 5 is white
Flue-gas temperature is reduced to about 100 DEG C by about 170 DEG C, takes off about 65 DEG C of 110 DEG C of the moon or so of the raisings of white flue-gas temperature.
Further, in the present embodiment, in order to improve the economic benefit and generating efficiency in power plant, power plant is reduced
Security risk, removal are originally arranged in the SGH heat exchanger before chimney, increase gas fired-boiler 8 and the second flue gas-flue gas heat exchange
Device 9.Gas fired-boiler 8 is connected to the trash repository 10 of garbage incinerating power plant, and the biogas that trash repository 10 generates is passed through combustion as fuel
It burns in gas boiler 8, and generates high-temperature flue gas, which, which enters, passes through the first cigarette in the second flue gas-flue gas heat-exchange unit 9
The de- white cigarette gas that gas-flue gas heat-exchange unit 6 heats carries out heat exchange, with the further temperature for increasing de- white cigarette gas, such as makes to take off white
The temperature of flue gas is increased to 140 DEG C or so by 110 DEG C or so, and the de- white cigarette gas after heating is expelled in atmosphere by chimney 11,
It high-temperature flue gas and is discharged directly in atmosphere after taking off white flue gas heat exchange.
The fume treatment process of the smoke processing system for waste incineration combined power generation plant of the present embodiment are as follows: flue gas from
Waste incinerator 1 come out after enter extracting tower 2 in, in extracting tower 2 carry out depickling reaction, subsequently into dust-extraction unit 3 into
Row dedusting in the subsequent steam-flue gas heat-exchange unit 4 of flue gas by dedusting, carries out heat exchange with the steam from steam turbine, so that
Temperature rises to the temperature for being adapted for denitration reaction, and then flue gas, which enters, carries out denitration process in denitrification apparatus 5, after denitration process
Flue gas heat exchange is carried out in the first flue gas-flue gas heat-exchange unit 6 with the de- white cigarette gas for carrying out the white device 7 of autospasy, complete heat exchange
Flue gas enter in acid deacidifying device 7 and carry out taking off white processing, to remove the moisture and sour gas in flue gas, form de- white cigarette
Gas, and complete heat exchange de- white cigarette gas enter the second flue gas-flue gas heat-exchange unit 9 in, with the high-temperature flue gas from gas fired-boiler 8 into
Row heat exchange is expelled to atmosphere by chimney 11 after de- white cigarette gas lift high-temperature further to increase temperature, and high-temperature flue gas is completed
It is also expelled in atmosphere after heat exchange.
The smoke processing system of garbage incinerating power plant according to the present utility model, by increasing gas fired-boiler and flue gas-
Flue gas heat-exchange unit generates biogas generation high-temperature flue gas using trash repository and reaches required smoke evacuation temperature to heat de- white cigarette gas
Degree, has saved extraction flow of steam, improves the economic benefit of burning power plant, and due to utilizing gas fired-boiler after-flame mesh
The preceding biogas for needing back to spray waste incinerator, in the same of the biogas safely and efficiently generated using trash repository in burning power plant
When, having saved the energy and having relieved biogas leads to the security risk of waste incineration furnace coking.
Unless otherwise defined, the technology of technical and scientific term used herein and the technical field of the utility model
The normally understood meaning of personnel is identical.Term used herein is intended merely to describe specifically to implement purpose, it is not intended that limit
The utility model processed.Terms such as herein presented " settings " can both indicate that a component was attached directly to another portion
Part can also indicate that a component is attached to another component by middleware.The spy described in one embodiment herein
Sign can be applied in combination another embodiment individually or with other feature, unless this feature is in another embodiment
It is not suitable for or is otherwise noted.
The utility model is illustrated through the foregoing embodiment, but it is to be understood that, above-described embodiment is
Purpose for illustrating and illustrating, and be not intended to limit the invention within the scope of described embodiment.Furthermore ability
Field technique personnel are it is understood that the utility model is not limited to above-described embodiment, and introduction according to the present utility model is also
More kinds of variants and modifications can be made, these variants and modifications all fall within the utility model range claimed with
It is interior.The protection scope of the utility model is defined by the appended claims and their equivalents.
Claims (5)
1. a kind of smoke processing system of garbage incinerating power plant characterized by comprising
Gas cleaning subsystem, the gas cleaning subsystem are configured to carry out at purification the flue gas that waste incinerator is discharged
Reason, to remove the pollutant in the flue gas；
Take off white device, it is described to take off white device and be configured to remove sour gas and moisture in the flue gas, change the flue gas
To take off white cigarette gas；
First flue gas-flue gas heat-exchange unit, the first flue gas-flue gas heat-exchange unit are configured to make by the gas cleaning subsystem
The flue gas of processing and the de- white cigarette gas carry out heat exchange, to heat the de- white cigarette gas, by the gas cleaning subsystem
The flue gas of processing and described take off take off white device into described after white flue gas heat exchange；
Gas fired-boiler, the gas fired-boiler are configured to generate high-temperature flue gas using the biogas combustion generated in trash repository；
Second flue gas-flue gas heat-exchange unit, the second flue gas-flue gas heat-exchange unit are configured to make from the first flue gas-flue gas
The de- white cigarette gas of heat exchanger carries out heat exchange with the high-temperature flue gas from the gas fired-boiler, so that the temperature of the de- white cigarette gas
It further increases, the de- white cigarette gas after heating is discharged by chimney.
2. system according to claim 1, which is characterized in that the gas cleaning subsystem includes:
Extracting tower, the extracting tower are configured to carry out at depickling the flue gas that the garbage incinerator grates go out using deacidification agent
Reason, to remove the sour gas in the flue gas；
Dust-extraction unit, the dust-extraction unit is configured to be dusted processing to the flue gas by extracting tower processing, with removal
Particulate matter in the flue gas；
Denitrification apparatus, the denitrification apparatus is configured to carry out denitration process to the flue gas Jing Guo the dust-extraction unit dedusting, to go
Except the nitrogen oxides in the flue gas.
3. system according to claim 2, which is characterized in that the gas cleaning subsystem further include:
Steam-flue gas heat-exchange unit, the steam-flue gas heat-exchange unit are configured to pass through using the steam heating in temperature of power plant steam turbine
The flue gas of the dust-extraction unit processing.
4. system according to claim 2, which is characterized in that the dust-extraction unit includes bag filter.
5. system according to claim 2, which is characterized in that the denitrification apparatus includes SCR denitration device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820524701.9U CN208372792U (en) | 2018-04-12 | 2018-04-12 | The smoke processing system of garbage incinerating power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820524701.9U CN208372792U (en) | 2018-04-12 | 2018-04-12 | The smoke processing system of garbage incinerating power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345504A (en) * | 2019-08-05 | 2019-10-18 | 大唐东营发电有限公司 | It is a kind of to remove white haze device for power plant |
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2018
- 2018-04-12 CN CN201820524701.9U patent/CN208372792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345504A (en) * | 2019-08-05 | 2019-10-18 | 大唐东营发电有限公司 | It is a kind of to remove white haze device for power plant |
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