CN206281365U - A kind of high-temp waste gas afterheat utilizing system - Google Patents
A kind of high-temp waste gas afterheat utilizing system Download PDFInfo
- Publication number
- CN206281365U CN206281365U CN201621364340.3U CN201621364340U CN206281365U CN 206281365 U CN206281365 U CN 206281365U CN 201621364340 U CN201621364340 U CN 201621364340U CN 206281365 U CN206281365 U CN 206281365U
- Authority
- CN
- China
- Prior art keywords
- boiler
- waste heat
- thermal power
- power generation
- generation unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a kind of high-temp waste gas afterheat utilizing system, it is related to energy saving technology in metallurgy field, and boiler design and manufacture field, including waste heat boiler and thermal power generation unit, it is characterised in that：Waste heat boiler is direct current waste heat boiler, exhaust pipe is sequentially communicated waste heat boiler and after-treatment system, thermal power generation unit water supply system is communicated to the feed-water intake of waste heat boiler through supply line, and the steam (vapor) outlet of waste heat boiler is communicated to steam-turbine entrance after steam pipework and thermal power generation unit boiler export are overheated or reheated steam pipeline converges.The selection of high-temp waste gas waste heat boiler steam design parameter and thermal power generation unit boiler matching are shared Major Systems by the utility model with thermal power generation unit, are simplifying waste heat machine set system, while investment reduction and operating cost, improve utilization rate of waste heat.
Description
Technical field
The utility model is related to energy saving technology in metallurgy field, and boiler design and manufacture field.
Background technology
The smelting exhaust temperature of modern metal smelting furnace (such as polysilicon refines stove) up to 650 DEG C -1200 DEG C, if will
Directly discharge will cause huge energy waste to the heat, typically be recycled by waste heat boiler.Due to waste heat total amount
Not high, the cogeneration unit parameter being commonly designed is relatively low, and utilization rate of waste heat is not high, and needs well-equipped electricity generation system.
According to increasingly strict environmental requirement, fume environment protection system may be also needed to, system complex, investment and operation expense compared with
It is high.
Lian Kuang factories are typically simultaneously large electricity consumer, are often equipped with thermal power generation unit (such as Thermal generation unit) for plant area supplies
Electricity, current thermal power generation unit widely used large and super-critical parameter generating set, the postcritical coal dust of such as more than 350MW
Stove or CFBB, with efficiency higher.
Utility model content
The purpose of this utility model is：Individually designed waste heat is used for the common waste gas heat utilization of prior art
Boiler simultaneously configures the Turbo-generator Set for corresponding to parameter, and its system complex, investment are higher, and suffers from the limitation of waste heat total amount,
Unit capacity is small, parameter is relatively low, cogeneration utilization ratio is relatively low.This patent is by high-temp waste gas waste heat boiler steam design parameter
Selection and thermal power generation unit boiler matching, and Major Systems are shared with thermal power generation unit, simplifying waste heat machine set system, section
About invest while with operating cost, improve utilization rate of waste heat.
The purpose of this utility model is realized by following technical proposals：
A kind of high-temp waste gas afterheat utilizing system, including waste heat boiler and thermal power generation unit, waste heat boiler are more than direct current
Heat boiler, exhaust pipe is sequentially communicated waste heat boiler and after-treatment system, and thermal power generation unit water supply system connects through supply line
The feed-water intake of waste heat boiler is passed to, the steam (vapor) outlet of waste heat boiler is overheated through steam pipework and thermal power generation unit boiler export
Or reheated steam pipeline converge after be communicated to steam-turbine entrance.
Alternatively, after-treatment system includes thermal power generation unit boiler and its smoke processing system, waste heat boiler it is useless
Gas outlet is through one and/or Secondary Air air supply device of exhaust pipe connection thermal power generation unit boiler to burner hearth.
Used as further selection, thermal power generation unit boiler is CFBB, and the waste gas outlet of waste heat boiler is passed through
The First air air supply device of exhaust pipe communication loop fluidized-bed combustion boiler is to burner hearth.
Used as another further selection, thermal power generation unit boiler is pulverized-coal fired boiler, and the waste gas outlet of waste heat boiler is through useless
The Secondary Air air supply device of air pipe connection pulverized-coal fired boiler is to burner hearth.
As another further selection, also including on the exhaust pipe between waste heat boiler and thermal power generation unit boiler
Dust pelletizing system.
Alternatively, after-treatment system is sequentially communicated including exhaust pipe dust arrester and desulfuring and denitrifying apparatus, dedusting
Device and/or desulfuring and denitrifying apparatus have heat exchange heat sink, the heat-absorbing medium pipeline connection of the heat sink that exchanges heat to refine ore deposit stove,
Plant area's heating installation, the high-pressure heater or low-pressure heater or oxygen-eliminating device of coal unit, boiler air preheater entrance cold wind, ore deposit heat
One or more in stove air heating device.Used as further selection, dust arrester is sack cleaner, its heat exchange cooling dress
In being set to, cryogenic heat exchanger, desulfurizer is wet desulphurization device, its heat exchange the grade low-temp heat exchanger of heat sink two.
Alternatively, thermal power generation unit water supply system enters through the feedwater that supply line and booster pump are communicated to waste heat boiler
Mouthful.
Alternatively, thermal power generation unit boiler is super critical boiler or more than 300MW boilers.
The foregoing main scheme of the utility model and its each further selection scheme can be with independent assortments to form multiple schemes,
For the utility model can be used and claimed scheme；And the utility model, (each non conflicting selection) selection between and
Can also independent assortment and other selections between.Those skilled in the art are after the present invention program is understood according to prior art and public affairs
Know that general knowledge can understand there is multiple combination, be the claimed technical scheme of the utility model, exhaustion is not done herein.
Workflow of the present utility model：
Lian Kuang factories are project assorted with thermal power generation unit (such as Thermal generation unit) in same plant area or adjacent near position,
Waste heat boiler use direct current waste heat boiler, waste heat boiler feedwater take from thermal power generation unit water supply system, through booster pump supercharging (depending on
Residual heat system pressure drop situation is matched) after, direct current waste heat boiler is sent into, water is carried out with high-temp waste gas in direct current waste heat boiler
Countercurrent flow, the steam for being heated to thermal power generation unit Stream temperature degree quite (such as 570 DEG C) sends thermal power generation unit back to,
For steam turbine power generation after converging with thermal power generation unit boiler export overheat or reheated steam.Waste gas is lowered the temperature through direct current waste heat boiler
To uniform temperature (as~250 DEG C) below after, visual actual conditions selection is processed by following scheme：
Scheme one：Waste gas after cooling passes through the mineral grain (if necessary) that dust pelletizing system is reclaimed in waste gas for newly setting, and removes
Waste gas after dirt carries out mixing burning with the former thermal power generation unit boiler of feeding in the form of primary and secondary air, and through former thermoelectric generator
Group boiler flue gas treatment system treatment pollutant heel row air.When thermal power generation unit boiler is CFBB, give up
Gas can be sent into the form of First air；When thermal power generation unit boiler be pulverized-coal fired boiler when, waste gas can in the form of Secondary Air
Sent between main burner and burnout degree, advantageously reduce emission of NOx of boiler.
Scheme two：Waste gas dust-removal device and desulfuring and denitrifying apparatus after cooling carry out pollutant process heel row air：For example
Again by being separately provided, cryogenic heat exchanger continue for EGT to be reduced to suitable bag-type dust temperature (~120 DEG C), then
Particulate matter in waste gas is reclaimed by sack cleaner, the waste gas after dedusting again reduces flue-gas temperature through two grade low-temp heat exchangers
To suitable wet desulphurization temperature, pollutant process heel row is carried out through other environmental protection facilities (such as wet desulphurization denitrification apparatus) big
Gas.Cryogenic heat exchanger can be used to be heated for refining ore deposit stove, plant area by the heat that the working medium such as water absorb according to the actual conditions of power plant,
The heat that draws gas of high-pressure heater, low-pressure heater or the oxygen-eliminating device of thermal power generation unit etc. is substituted, thermal power generation unit is heated
Boiler air preheater entrance cold wind, mineral hot furnace wind etc..
With thermal power generation unit (such as more than 300MW/overcritical) be combined high-temp waste gas UTILIZATION OF VESIDUAL HEAT IN by the art of this patent,
Increase substantially utilization rate of waste heat and reduce UTILIZATION OF VESIDUAL HEAT IN cost.Mainly using direct current waste heat boiler, and produced
Steam introduces thermal power generation unit boiler, makes full use of boiler circuit, steam turbine generator system and the flue gas of thermal power generation unit
Pollutant disposal system equipment, significantly simplifies afterheat utilizing system, reaches economic, efficient utilization and smelts high-temp waste gas waste heat
Purpose.
Waste heat boiler makes full use of the advantage of thermal power generation unit system equipment：
1) raising of waste heat boiler parameter can utilize thermal power generation unit high-parameter steam turbine, and steam turbine steam inlet condition is carried
Height, from the Rankine cycle on T-S figures, the efficiency of Rankine cycle will also be improved, and the efficiency of UTILIZATION OF VESIDUAL HEAT IN is just higher.
2) afterheat boiler system will be greatly simplified, and waste heat boiler is from relative complex double pressures or three discard heat boiler pipelines
System becomes direct current, the direct current afterheat boiler system without reheating, and cost is greatly reduced, and waste heat boiler start-stop is flexible, startup
Time significantly shortens.
3) in the access thermal power generation unit that steams of waste heat boiler, each equipment high efficiency rate of thermal power generation unit is made full use of
Advantage.
If 4) contain combustible and useful particulate matter in smelting exhaust, can lower the temperature through waste heat boiler, removing dust equipment is returned
In receipts waste gas after particulate matter, discharged after being processed by the follow-up environmental protection facility of waste heat boiler, can also be sent directly into thermal power generation
Burning is mixed in unit boiler, cancels the environment friendly system after waste heat boiler, afterheat utilizing system investment is greatly lowered.
5) the waste gas feeding thermal power generation unit Boiler Mixed Burning after dedusting, no longer afterburning CO, it is possible to decrease thermal power generation unit
Emission of NOx of boiler.
The beneficial effects of the utility model：
1) high-temp waste gas utilization rate of waste heat can be by the independent middle-size and small-size hair compared with low parameter cogeneration unit~20%
Electrical efficiency, brings up to (if the supercritical parameter unit for generally using at present is more than 40%) suitable with thermal power generation unit
Level, significantly energy saving consumption.If thermal power generation unit is supercritical unit, identical waste heat amount can multiple one times of electricity
Amount.Amount to 600,000 Nm with 6 refining silicon stoves3/ h, as a example by 1000 DEG C of waste gas, cogeneration power can increase~50MW, generate electricity more
~4 hundred million degree/year, equivalent to the coal consumption amount (~12 ten thousand tons of mark coal/years) for saving large-scale Thermal generation unit hair same charge.
2) afterheat boiler system will be become by more complicated double pressures generally used now or three discard heat boiler pipe-line systems
The once form without reheating of the direct current of direct current waste heat boiler, it is not necessary to configure turbine generator system, cost will be greatly reduced.
3) after waste gas is lowered the temperature through waste heat boiler, in removing dust equipment recovery waste gas after particulate matter, it is sent directly into thermal power generation
Unit boiler mixes burning, can cancel or use less the afterburning equipment of waste heat boiler, cancels supporting environment friendly system, and afterheat utilizing system is thrown
Money is greatly lowered.(scheme one)
4) cause that operation and maintenance also become simple after afterheat utilizing system simplifies, may be incorporated into the operation of thermal power generation unit
In maintenance management, operation and maintenance cost is reduced.
5) the waste gas oxygen content after dedusting is relatively low, can be as thermal power generation unit CFBB First air or coal dust
Reduction Secondary Air feeding thermal power generation unit boiler between boiler main burner and burnout degree, it is possible to decrease coal-fired boiler NOx is arranged
Put.
Brief description of the drawings
Fig. 1 is the device schematic flow sheet of the utility model embodiment 1；
In figure, 1- large and super-critical thermal power generation unit boiler circuits；2- large and super-critical thermal power generation unit cigarette wind
Gas system；3- direct current waste heat boilers；4- feedwater booster pumps；5- feed-regulating valves；6- feedwater shut-off valves；7- steam is turned off
Valve；8- waste gas dedusting equipment；9- booster fans；10- air channels；11- large and super-critical thermal power generation unit feed pumps；12-
Large and super-critical steam system of thermal power plant pipeline；13- large and super-critical thermal power generation unit steam turbines；21- is large-scale super
Critical thermal power generation unit boiler；22- mineral hot furnaces；23- superheaters；24- water-cooling walls；25- economizers；26- reheaters；27- is high
Plus；28- oxygen-eliminating devices；29- is low to be added；30- condensate pumps；31- condensers；32- denitrification apparatus；33- desulfurizing towers；34- electric bag dusts；
35- chimneys.
Fig. 2 is the device schematic flow sheet of the utility model embodiment 2；
In figure, the middle temperature waste heat boilers of 1-；2- cleaners；3- boiler cold air heaters；4- cryogenic heat exchangers；5-
Desulphurization denitration equipment；6- air-introduced machines；7- chimneys；8- heat user heat transmission equipments；9- heat user heat transmission equipment inlet valves；10-
Heating low pressure feed water regulating valve；11- large and super-critical thermal power generation units are low to be added；12- large and super-critical thermal power generation units are given
Water pump；13- feedwater booster pumps；22- mineral hot furnaces；23- superheaters；24- water-cooling walls；25- economizers；26- reheaters；27- is high to be added；
28- oxygen-eliminating devices；29- direct current waste heat boilers；30- condensate pumps；31- condensers.
Specific embodiment
The utility model is further described with reference to specific embodiments and the drawings.
Embodiment 1：
With reference to shown in Fig. 1, a kind of typical high-temp waste gas waste heat recycling system, including large and super-critical thermal power generation
Unit Steam Water system 1, large and super-critical thermal power generation unit cigarette general mood system 2, direct current waste heat boiler 3, feedwater booster pump 4 (can
Be unworthy of), feed-regulating valve 5, feedwater shut-off valve 6, steam shut-off valve 7, waste gas dedusting equipment 8, booster fan 9, air channel 10 etc..
The outlet of large and super-critical thermal power generation unit system feed pump 11 takes boiler feedwater all the way (~200 DEG C ,~32MPa), through feedwater
After booster pump 4 (apolegamy of viewing system waste heat steam-water resistance situation), feed-regulating valve 5, feedwater shut-off valve 6, feeding direct current waste heat pot
Stove 3, waste gas of the feedwater with more than~650 DEG C carries out a countercurrent flow in direct current waste heat boiler 3, is heated to super with large-scale
Criticality benchmark Stream temperature degree quite~570 DEG C of steam, send large and super-critical thermal power generation unit back to after flowing through steam shut-off valve 7
Main steam line 12 supplies large and super-critical thermal power generation after converging with the outlet vapor of large and super-critical thermal power generation unit boiler 21
Power generator turbine 13 generates electricity.Adjusted by adjusting the aperture of feed-regulating valve 5 by the water and waste gas of direct current waste heat boiler 3
The ratio of flow, so as to control the outlet steam temperature of direct current waste heat boiler 3 to go out with large and super-critical thermal power generation unit boiler 21
Mouth vapor (steam) temperature is suitable.When the stopping of ore deposit stove is refined without high-temp waste gas, also can be by closing feedwater shut-off valve 6 and steam shut-off valve 7
By afterheat utilizing system off-the-line, the normal operation of large and super-critical thermal power generation unit is maintained.
Waste gas cooled to through supercritical DC waste heat boiler 3~less than 250 DEG C after, reclaim useless by waste gas dedusting equipment 8
Valuable mineral particle in gas, after waste gas after dedusting improves pressure through booster fan 9, by air channel 10 with one and/or secondary
Carry out mixing burning in the form feeding large and super-critical thermal power generation unit boiler 21 of wind, and through large and super-critical thermal power generation unit
Smoke processing system processes pollutant heel row air.
Except above example accident, can also further flexible configuration according to demand：
1), waste heat boiler feedwater comes from the large-scale thermal power machine group water supply system of plant area's outfit, and concrete engineering is not
Be may include with design：
A, waste heat boiler feedwater are taken from before and after large-scale thermal power machine any one-level low-pressure heater of group low pressure feed water system；
B, waste heat boiler feedwater are taken from before and after large-scale thermal power machine any one-level high-pressure heater of group high-pressure feed water system；
C, waste heat boiler feedwater take from any one-level heating surface entrance of large-scale thermal power machine group steam generator system or outlet collection
Case.
2), the steam (or hot water) after waste heat boiler heating sends the water supply system of large-scale thermal power machine group, main vapour system back to
System or reheat system, the different designs scheme of concrete engineering may include：
The steam (or hot water) that a, waste heat boiler are produced sends the main vapour of large-scale thermal power machine group steam turbine or reheater piping back to；
The steam (or hot water) that b, waste heat boiler are produced is sent any one-level heating surface of large-scale thermal power machine group boiler back to and is entered
Outlet header；
The steam (or hot water) that c, waste heat boiler are produced sends large-scale thermal power machine group heat regenerative system any position back to.
The present embodiment has the characteristics that：
1. the direct current waste heat boiler of simple structure, flexible arrangement；Direct current waste heat boiler is only that band working medium introduces, draws and must
The pipeline and the convection heating surface of valve wanted；
2. after feed pump of the waste heat boiler feedwater from large and super-critical thermal power generation unit system, waste heat boiler in itself may be used
Do not set water treatment system；
3. can be set on the feedwater piping between large-sized unit feed pump and waste heat boiler feedwater booster pump, feed-regulating valve and to
Water shut-off valve；
4. waste heat boiler does not match other energy transition equipments such as Turbo-generator Set, heat boiler outlet steam directly with
Large-sized boiler outlet vapor pipeline converges, directly by former Large Steam Turbine Sets using generating；
5. heat boiler outlet is to can set steam shut-off valve between large-sized unit live steam piping；Can be by waste heat boiler and large-sized unit
Isolated；
6. (such as less than~250 DEG C) removing dust equipment reclaims dust granules after the reduction of heat boiler outlet EGT；
7, the waste gas after dedusting can directly to mix burning in feeding large-sized boiler in the form of primary and secondary air；
8. Generator Set boiler can be CFBB, and oxygen content is less than the low temperature exhaust heat waste gas of air with one
The form feeding Large-scale machine set CFBB of secondary wind, advantageously reduces the NOx emission of former large circulating fluidized bed boiler,
And using the pollutant in the environment friendly system efficient process waste gas of former Large-scale machine set.
9. Generator Set boiler can be pulverized-coal fired boiler, and oxygen content is less than the waste gas of air in the form of reducing Secondary Air
Between burnout degree and main burner in feeding Large-scale machine set Combustion System of Boiler Burning Fine, waste gas can play a part of to reduce NOx,
The NOx emission of boiler is advantageously reduced, and using the pollutant in the environment friendly system efficient process waste gas of former Large-scale machine set.
10. for tail gas feeding Large-scale machine set it is combustion-supporting, mix burning, can not be set in waste heat boiler/do not come into operation elimination it is flammable
Property gas, the afterburning system of toxic gas.
Embodiment 2：
With reference to shown in Fig. 2, a kind of high temperatures typical waste gas residual heat is classified recycling system, and the waste heat of high-temp waste gas is divided into
High, medium and low temperature is multistage, is utilized according to optimal use efficiency respectively.Wherein high temperature part is substantially identical with embodiment one (is
Guarantee large-sized unit turbine efficiency, can be by high-temp waste gas waste heat boiler feedwater water intaking point selection after high-pressure heater).It is main
It is that EGT after the cooling of high-temp waste gas waste heat boiler can be properly increased to distinguish, and does not send back in large-sized boiler directly and mix
Burn, and proceed waste heat recovery and pollutant process in follow-up newly added equipment again.It is different or new on the basis of embodiment one
The equipment of increasing includes：The middle temperature waste heat boilers of 1-；2- cleaners；3- boiler cold air heaters；4- cryogenic heat exchangers；5-
The out of stock equipment of desulfurization；6- air-introduced machines；7- chimneys；8- heat user heat transmission equipments；9- heat user heat transmission equipment inlet valves；10-
Heating low pressure feed water regulating valve.
In the present embodiment, the waste gas of mineral hot furnace discharge is first cooled to through the high-temp waste gas waste heat boiler similar with embodiment one
250~350 DEG C (difference according to heat user needs selection).Following description is mainly the portion after the cooling of high-temp waste gas waste-heat oven
Part：
Waste gas after cooling continues to cool to temperature (such as bag-type dust~120 of suitable dedusting into middle temperature waste-heat oven 1
DEG C), then removing dust equipment 2 reclaims the mineral grain in waste gas, flows through cryogenic heat exchanger 4 and continues to cool to the dirts such as suitable desulfurization
The temperature (such as wet desulphurization~80 DEG C) of dye thing treatment, is entering after desulphurization denitration equipment 5 carries out pollutant process by air inducing
The row of machine 6 is to chimney 7.
Heat can be sent to heat user heat transmission equipment 8 in need by middle temperature waste heat boiler 1 by cycle fluids such as water, for
Family uses, and heat user, when heat user load fluctuation calorific requirement is smaller or is not required to heat, can pass through including heating and industrial use etc.
The regulation of heat user heat transmission equipment inlet valve 9 and heating low pressure feed water regulating valve 10, heating large generating set is used for by heat
Low pressure feed water, exclusion low-pressure heater draws gas, and increases the generated energy of Generator Set.
Heat can be sent to Generator Set boiler air preheater and entered by cryogenic heat exchanger 4 by cycle fluids such as water
Mouthful, pre- device entrance cold wind is heated by boiler cold air heaters 3, to prevent the blocking of preheater and save Generator Set pot
The coal consumption of stove.The heat of certain cryogenic heat exchanger also can partly be used to heat low pressure feed water etc..
The present embodiment has the characteristics that：
1. the direct current waste heat boiler of simple structure, flexible arrangement；Direct current waste heat boiler is only that band working medium introduces, draws and must
The pipeline and the convection heating surface of valve wanted；
2. after feed pump of the waste heat boiler feedwater from large and super-critical thermal power generation unit system, waste heat boiler in itself may be used
Do not set water treatment system；
3. can be set on the feedwater piping between large-sized unit feed pump and waste heat boiler feedwater booster pump, feed-regulating valve and to
Water shut-off valve；
4. waste heat boiler does not match other energy transition equipments such as Turbo-generator Set, heat boiler outlet steam directly with
Large-sized boiler outlet vapor pipeline converges, directly by former Large Steam Turbine Sets using generating；
5. heat boiler outlet is to can set steam shut-off valve between large-sized unit live steam piping；Can be by waste heat boiler and large-sized unit
Isolated；
6., by high-temp waste gas waste heat classified utilization, utilization ratio higher will be obtained in the project for have heat demand；Together
When low-pressure stage waste heat equipment can select different material and pressure ratings etc..
7. arrange that cleaner is reclaimed after the waste gas after being cooled down through cryogenic heat exchanger and receive dust granules；Cleaner is invested more
Low, efficiency of dust collection is higher；
8, it to be easy to that exhausting waste gas temperature is reduced into lower by special substance cryogenic heat exchanger, UTILIZATION OF VESIDUAL HEAT IN is more abundant.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of high-temp waste gas afterheat utilizing system, including waste heat boiler and thermal power generation unit, it is characterised in that：Waste heat boiler
It is direct current waste heat boiler, exhaust pipe is sequentially communicated waste heat boiler and after-treatment system, and thermal power generation unit water supply system is through giving
Water lines are communicated to the feed-water intake of waste heat boiler, and the steam (vapor) outlet of waste heat boiler is through steam pipework and thermal power generation unit boiler
Outlet superheat or reheated steam pipeline are communicated to steam-turbine entrance after converging.
2. high-temp waste gas afterheat utilizing system as claimed in claim 1, it is characterised in that：After-treatment system includes thermal power generation
Unit boiler and its smoke processing system, the waste gas outlet of waste heat boiler is through the one of exhaust pipe connection thermal power generation unit boiler
And/or Secondary Air air supply device is to burner hearth.
3. high-temp waste gas afterheat utilizing system as claimed in claim 2, it is characterised in that：Thermal power generation unit boiler is circulation
Fluidized-bed combustion boiler, the waste gas outlet of waste heat boiler is through the First air air supply device of exhaust pipe communication loop fluidized-bed combustion boiler to stove
Thorax.
4. high-temp waste gas afterheat utilizing system as claimed in claim 2, it is characterised in that：Thermal power generation unit boiler is coal dust
Boiler, the waste gas outlet of waste heat boiler is through the Secondary Air air supply device of exhaust pipe connection pulverized-coal fired boiler to burner hearth.
5. high-temp waste gas afterheat utilizing system as claimed in claim 2, it is characterised in that：Also include being located at waste heat boiler and fire
Dust pelletizing system between power generator group boiler on exhaust pipe.
6. high-temp waste gas afterheat utilizing system as claimed in claim 1, it is characterised in that：After-treatment system includes exhaust pipe
The dust arrester and desulfuring and denitrifying apparatus being sequentially communicated, dust arrester and/or desulfuring and denitrifying apparatus have heat exchange heat sink, change
To ore deposit stove, plant area's heating installation is refined, the high-pressure heater of coal unit, low pressure add the heat-absorbing medium pipeline connection of hot heat sink
Hot device or oxygen-eliminating device, one or more in boiler air preheater entrance cold wind, mineral hot furnace air heating device.
7. high-temp waste gas afterheat utilizing system as claimed in claim 6, it is characterised in that：Dust arrester is sack cleaner,
Its heat exchange heat sink be in, cryogenic heat exchanger, desulfurizer is wet desulphurization device, its heat exchange the grade low-temp of heat sink two change
Hot device.
8. high-temp waste gas afterheat utilizing system as claimed in claim 1, it is characterised in that：Thermal power generation unit water supply system is passed through
Supply line and booster pump are communicated to the feed-water intake of waste heat boiler.
9. high-temp waste gas afterheat utilizing system as claimed in claim 1, it is characterised in that：Thermal power generation unit boiler faces for super
Boundary's boiler or more than 300MW boilers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364340.3U CN206281365U (en) | 2016-12-13 | 2016-12-13 | A kind of high-temp waste gas afterheat utilizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364340.3U CN206281365U (en) | 2016-12-13 | 2016-12-13 | A kind of high-temp waste gas afterheat utilizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206281365U true CN206281365U (en) | 2017-06-27 |
Family
ID=59072271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621364340.3U Active CN206281365U (en) | 2016-12-13 | 2016-12-13 | A kind of high-temp waste gas afterheat utilizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206281365U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059517A (en) * | 2019-11-07 | 2020-04-24 | 宋阳 | Flue gas waste heat steam injection boiler and system for producing high-pressure saturated steam |
| CN114234205A (en) * | 2021-12-15 | 2022-03-25 | 四川川锅锅炉有限责任公司 | Afterburning system for improving steam parameters of waste incineration waste heat boiler |
-
2016
- 2016-12-13 CN CN201621364340.3U patent/CN206281365U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059517A (en) * | 2019-11-07 | 2020-04-24 | 宋阳 | Flue gas waste heat steam injection boiler and system for producing high-pressure saturated steam |
| CN114234205A (en) * | 2021-12-15 | 2022-03-25 | 四川川锅锅炉有限责任公司 | Afterburning system for improving steam parameters of waste incineration waste heat boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2217615C2 (en) | Combination-type electric power station with gas and steam turbines | |
| US9175851B2 (en) | Method of and an arrangement for recovering heat from bottom ash | |
| CN101392992B (en) | Silicon smelting electric furnace waste heat power generation process flow and configuration | |
| CN201103894Y (en) | Saturated steam heating stove | |
| CN103344124A (en) | Lime kiln waste gas waste heat electricity generating system with by-product coal gas afterburning function | |
| CN107388230A (en) | A kind of joint backheating system | |
| CN205156647U (en) | Power generation system is jointly retrieved to improved generation sintering waste heat | |
| CN206281365U (en) | A kind of high-temp waste gas afterheat utilizing system | |
| CN102865746A (en) | Improved waste heat power generation system for cement industry | |
| CN206222288U (en) | A kind of Steam Cooler System | |
| CN101865454B (en) | Method for overheating steam of cooler waste heat boiler and device used in same | |
| CN102589305B (en) | Sintering waste heat generating system | |
| CN106839790A (en) | A kind of electric converter gas afterheat generating system | |
| CN207180391U (en) | A kind of sintering circular-cooler waste-heat recovery device | |
| JP5818307B2 (en) | Boiler equipment and method for controlling gas temperature at outlet thereof | |
| CN106524127A (en) | Steam cooler system and method for decreasing steam-extraction superheat degree of steam cooler system | |
| CN104930485B (en) | A kind of flue gas waste heat recovery system and its recovery method and purposes | |
| CN105371267A (en) | Double-reheat steam turbine heat regenerative energy utilizing system for primary air and secondary air of heating boiler | |
| CA2109938A1 (en) | Environmentally acceptable electric energy generation process and plant | |
| CN105387729A (en) | Material cooling waste heat power generation system | |
| CN108680040A (en) | The efficient Distribution utilization system of sintering mine sensible heat and distribution method | |
| CN206479052U (en) | A kind of electric converter gas afterheat generating system | |
| JP7455781B2 (en) | Ammonia supply unit for power generation plants, ammonia vaporization treatment method for power generation plants, and power generation plants | |
| CN205424888U (en) | Double reheat steam turbine backheat utilization of energy system of heating boiler no. 1, overgrate air | |
| CN205482405U (en) | Flue gas waste heat recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |