CN208372813U - Smoke processing system for waste incineration combined power generation plant - Google Patents
Smoke processing system for waste incineration combined power generation plant Download PDFInfo
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- CN208372813U CN208372813U CN201820524669.4U CN201820524669U CN208372813U CN 208372813 U CN208372813 U CN 208372813U CN 201820524669 U CN201820524669 U CN 201820524669U CN 208372813 U CN208372813 U CN 208372813U
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- flue gas
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- white
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Abstract
The utility model provides a kind of smoke processing system for waste incineration combined power generation 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 remove sour gas and moisture in the flue gas, the flue gas is made to be changed into de- white cigarette gas；UTILIZATION OF VESIDUAL HEAT IN subsystem is configured to take off white cigarette gas described in the waste-heat using cooling water in biomass incinerator；Flue gas-flue gas heat-exchange unit is configured to make the flue gas by the gas cleaning subsystem processes and the de- white cigarette gas by UTILIZATION OF VESIDUAL HEAT IN subsystem heating to carry out heat exchange, and the de- white cigarette gas after the flue gas-flue gas heat-exchange unit by chimney by being discharged.Smoke processing system according to the present utility model for waste incineration combined power generation plant has recycled the waste heat in biomass incinerator, saves extraction flow of steam, improves the economic benefit of combined power generation plant.
Description
Technical field
The utility model relates to flue gas of refuse burning processing techniques, in particular to one kind for waste incineration joint hair
The smoke processing system of power plant.
Background technique
With making rapid progress for new energy power generation technology, the power save mode of new energy power plant is also more and more diversified.At present
It has been proposed that " biomass direct-fired and waste incinerator working medium combined generating system ", i.e., is by the carbonated drink of waste incinerator
System is combined with biomass direct-fired unit, realizes that working medium is generating integrated.In existing flue gas of garbage furnace treatment process,
There are after a large amount of thermal loss, especially wet process depickling and de- Cynanchum glaucescens, this is because before wet process depickling and Tuo Bai, original 110
DEG C or so flue gas to 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
Heat exchanger is heated to 120 DEG C or more to SGH (steam-flue gas), and the SGH heat exchanger in process system needs to extract in steam turbine
Steam is heated, therefore reduces the generating efficiency in power plant.
Therefore, it is necessary to a kind of smoke processing system for waste incineration combined power generation plant be proposed, to overcome 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 one kind to be used for waste incineration combined power generation plant
Smoke processing 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；
UTILIZATION OF VESIDUAL HEAT IN subsystem, the UTILIZATION OF VESIDUAL HEAT IN subsystem are configured to the waste heat using cooling water in biomass incinerator
Heat the de- white cigarette gas；
Flue gas-flue gas heat-exchange unit, the flue gas-flue gas heat-exchange unit are configured to make by the gas cleaning subsystem processes
Flue gas and by the UTILIZATION OF VESIDUAL HEAT IN subsystem heating de- white cigarette gas carry out heat exchange, further to heat the de- white cigarette
Gas, the de- white cigarette gas after the flue gas-flue gas heat-exchange unit by chimney by being discharged, 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.
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.
In one embodiment of the utility model, the UTILIZATION OF VESIDUAL HEAT IN subsystem includes:
Absorption heat pump, the absorption heat pump are configured to the cooling in the water-cooled grate using the biomass incinerator
The waste heat for generating steam of water；
Afterheat heat exchanger, the afterheat heat exchanger are configured to the steam for generating the absorption heat pump and the de- white cigarette
Gas carries out heat exchange, and to heat the de- white cigarette gas, the steam is changed into water after completing heat exchange.
In one embodiment of the utility model, the UTILIZATION OF VESIDUAL HEAT IN subsystem further include:
Low-pressure heater, the low-pressure heater is configured to heat the water being changed by the steam, after heating
Water return to the water-cooled grate that the biomass incinerator is again introduced into the absorption heat pump and by circulation line, with benefit
Steam is again transformed into the waste heat of the cooling water.
In one embodiment of the utility model, the absorption heat pump is second-kind absorption-type heat pump.
Smoke processing system according to the present utility model for waste incineration combined power generation plant, using absorption heat pump benefit
Heated with the medium temperature waste heat of water-cooled grate cooling water in biomass incinerator take off it is white after flue gas, then take off it is white after flue gas again
It is discharged into atmosphere after the heating of GGH (flue gas-flue gas) heat exchanger by chimney, so on the one hand, passes through waste heat and GGH (flue gas-
Flue gas) after heat exchanger heats twice, flue gas can be raised to discharge required temperature, be initially positioned at GGH (cigarette so as to eliminate
Gas-flue gas) after heat exchanger, SGH (steam-flue gas) heat exchanger before chimney saves extraction flow of steam, improves hair
The generating efficiency of power plant；On the other hand, due to having recycled the waste heat in biomass incinerator, waste incineration cogeneration is improved
The economic benefit of factory.
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 is shown according to the smoke processing system for waste incineration combined power generation plant of an embodiment of the present invention
Structural schematic diagram.
Description of symbols:
1 waste incinerator
2 extracting towers
3 dust-extraction units
4 steam-flue gas heat-exchange unit
5 denitrification apparatus
6 flue gases-flue gas heat-exchange unit
7 take off white device
8 afterheat heat exchangers
9 absorption heat pumps
10 low-pressure heaters
11 biomass incinerators
12 water-cooled grates
13 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, detailed structure and step will be proposed in following description, to illustrate
The utility model proposes technical solution.The preferred embodiment of the utility model is described in detail as follows, however in detail in addition to these
Description is outer, and 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.
The utility model proposes a kind of smoke processing system for waste incineration combined power generation plant based on this, with sufficiently benefit
With the heat of combined power generation plant, below with reference to Fig. 1 to an embodiment of the present invention for waste incineration combined power generation plant
Smoke processing system is described in detail.
Smoke processing system 100 provided in this embodiment for waste incineration combined power generation plant is used for combined power generation plant
The flue gas that waste incinerator generates is handled, and to reduce environmental pollution, and is improved the heating efficiency of combined power generation plant, is mentioned
The economic benefit in high power plant.
As shown in Figure 1, the smoke processing system 100 provided in this embodiment for waste incineration combined power generation plant includes de-
Acid tower 2, dust-extraction unit 3, steam-flue gas heat-exchange unit 4, denitrification apparatus 5, flue gas-flue gas heat-exchange unit 6, take off white device 7, waste heat changes
Hot device 8, absorption heat pump 9 and low-pressure heater 10.
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 handled by extracting tower 2
Enter bag filter afterwards, processing is dusted in bag filter, removes the particulate matters such as the flying dust in flue gas.Bag-type dust
Device 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 45 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-
Flue gas-flue gas heat-exchange unit 6 is set between white device 7, the not de- white cigarette gas from denitrification apparatus 5 with carry out the de- of the white device 7 of autospasy
White cigarette gas carries out heat exchange in flue gas-flue gas heat-exchange unit 6, after heat exchange, does not take off white flue-gas temperature from denitrification apparatus 5
About 100 DEG C are reduced to by about 170 DEG C, about 70 DEG C of white flue-gas temperature is taken off and increases greater than 125 DEG C, and pass through 13 row of chimney
Out.
Further, in the present embodiment, in order to make full use of the heat of combined power generation plant, it is additionally provided with UTILIZATION OF VESIDUAL HEAT IN
System, the UTILIZATION OF VESIDUAL HEAT IN subsystem are configured to using the waste-heat of cooling water in biomass incinerator 11 come the white device of autospasy
7 de- white cigarette gas.
Specifically, UTILIZATION OF VESIDUAL HEAT IN subsystem includes afterheat heat exchanger 8, absorption heat pump 9 and low-pressure heater 10.
Circulation line is set between the water-cooled grate 12 in absorption heat pump 9 and biomass incinerator 11, and recirculated water enters
When water-cooled grate 12, heat exchange is carried out with the cooling water in water-cooled grate 12, is changed into steam using the medium temperature waste heat of cooling water,
Steam subsequently enters in afterheat heat exchanger 8 and carries out heat exchange with the de- white cigarette gas for carrying out the white device 7 of autospasy, to heat de- white cigarette gas,
The temperature of the de- white cigarette gas rises to 70 DEG C or so by 45 DEG C or so.Flue gas-flue gas heat exchange is gone successively to after de- white cigarette gas lift temperature
Device 6 carries out heat exchange with white flue gas is not taken off, and rises to the temperature being suitable for from smoke stack emission, such as 120 DEG C or more of temperature.
After steam and de- white cigarette gas heat exchange, temperature reduction is changed into water, low-pressure heater 10 is subsequently entered, in low-pressure heater 10
Change the water formed by hot steam from afterheat heat exchanger using the steam Calais for finishing function in steam turbine, to increase its temperature,
Form low add-back water.Low add-back water is logical to be back in the circulating water outlet of absorption heat pump 9, to be again introduced into life by circulation line
In the water-cooled grate 12 of substance incinerator 11, steam is again transformed into the waste heat using the cooling water in water-cooled grate 12, from
And carry out circulation next time.
Illustratively, in the present embodiment, absorption heat pump 9 uses second-kind absorption-type heat pump.
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 and carry out heat exchange in flue gas-flue gas heat-exchange unit 6 by the de- white cigarette gas that afterheat heat exchanger 8 heats, complete heat and hand over
The flue gas changed, which enters in acid deacidifying device 7, to carry out taking off white processing, and to remove the moisture and sour gas in flue gas, formation takes off white
Flue gas, de- white cigarette gas are introduced into heater heated by waste heat 8, with absorption heat pump 9 using in the water-cooled grate 12 of biomass incinerator 11
Cooling water waste heat formed steam carry out heat exchange, to increase temperature, completed in afterheat heat exchanger 8 heat exchange de- white cigarette
Gas enters flue gas-flue gas heat-exchange unit 6 and carries out heat exchange with white flue gas is not taken off, with the further temperature for increasing de- white cigarette gas, takes off
Atmosphere is expelled to by chimney 13 after white cigarette gas lift high-temperature.After steam completes heat exchange with de- white cigarette gas in afterheat heat exchanger 8
It is changed into water, subsequently enters and heated in low-pressure heater 10, forms that low add-back water is logical to be back to absorption heat pump 9 after heating
Then circulating water outlet is again introduced into the water-cooled grate 12 of biomass incinerator 11, to utilize cooling water in water-cooled grate 12
Waste heat be again transformed into steam.
Smoke processing system according to the present utility model for waste incineration combined power generation plant, using absorption heat pump benefit
Heated with the medium temperature waste heat of water-cooled grate cooling water in biomass incinerator take off it is white after flue gas, then take off it is white after flue gas again
It is discharged into atmosphere after the heating of GGH (flue gas-flue gas) heat exchanger by chimney, so on the one hand, passes through waste heat and GGH (flue gas-
Flue gas) after heat exchanger heats twice, flue gas can be raised to discharge required temperature, be initially positioned at GGH (cigarette so as to eliminate
Gas-flue gas) after heat exchanger, SGH (steam-flue gas) heat exchanger before chimney saves extraction flow of steam, improves hair
The generating efficiency of power plant；On the other hand, due to having recycled the waste heat in biomass incinerator, waste incineration cogeneration is improved
The economic benefit of factory.
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 (8)
1. a kind of smoke processing system for waste incineration combined power generation 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；
UTILIZATION OF VESIDUAL HEAT IN subsystem, the UTILIZATION OF VESIDUAL HEAT IN subsystem are configured to the waste-heat using cooling water in biomass incinerator
The de- white cigarette gas；
Flue gas-flue gas heat-exchange unit, the flue gas-flue gas heat-exchange unit are configured to make the cigarette by the gas cleaning subsystem processes
Gas and the de- white cigarette gas progress heat exchange heated by the UTILIZATION OF VESIDUAL HEAT IN subsystem, further to heat the de- white cigarette gas,
The de- white cigarette gas after the flue gas-flue gas heat-exchange unit by chimney by being discharged, at the gas cleaning subsystem
The flue gas of reason and described take off take off white device into described after white flue gas heat exchange.
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.
6. system according to claim 1, which is characterized in that the UTILIZATION OF VESIDUAL HEAT IN subsystem includes:
Absorption heat pump, the absorption heat pump are configured to the cooling water in the water-cooled grate using the biomass incinerator
Waste heat for generating steam；
Afterheat heat exchanger, the steam and the de- white cigarette gas that the afterheat heat exchanger is configured to make the absorption heat pump to generate into
Row heat exchange, to heat the de- white cigarette gas, the steam is changed into water after completing heat exchange.
7. system according to claim 6, which is characterized in that the UTILIZATION OF VESIDUAL HEAT IN subsystem further include:
Low-pressure heater, the low-pressure heater are configured to heat the water being changed by the steam, the water after heating
The water-cooled grate that the biomass incinerator is again introduced into the absorption heat pump and by circulation line is returned to, to utilize institute
The waste heat for stating cooling water is again transformed into steam.
8. system according to claim 6, which is characterized in that the absorption heat pump is second-kind absorption-type heat pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820524669.4U CN208372813U (en) | 2018-04-12 | 2018-04-12 | Smoke processing system for waste incineration combined power generation plant |
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| CN201820524669.4U CN208372813U (en) | 2018-04-12 | 2018-04-12 | Smoke processing system for waste incineration combined power generation plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433627A (en) * | 2019-07-03 | 2019-11-12 | 光大环保技术研究院（南京）有限公司 | Garbage incinerating power plant flue-gas purification equipment for limit for height area |
-
2018
- 2018-04-12 CN CN201820524669.4U patent/CN208372813U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433627A (en) * | 2019-07-03 | 2019-11-12 | 光大环保技术研究院（南京）有限公司 | Garbage incinerating power plant flue-gas purification equipment for limit for height area |
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