CN106402915A - Method and mechanism for increasing temperature of primary air of boiler pulverizing system - Google Patents
Method and mechanism for increasing temperature of primary air of boiler pulverizing system Download PDFInfo
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- CN106402915A CN106402915A CN201611047497.8A CN201611047497A CN106402915A CN 106402915 A CN106402915 A CN 106402915A CN 201611047497 A CN201611047497 A CN 201611047497A CN 106402915 A CN106402915 A CN 106402915A
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- Prior art keywords
- air
- superheater
- low temperature
- air channel
- door
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
- F23K2201/103—Pulverizing with hot gas supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/20—Drying
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a method for increasing the temperature of primary air of a boiler pulverizing system. The primary air is further heated by utilizing superheated steam of a boiler, so that the drying capability of the primary air is increased. On a pipeline from a low-temperature superheater outlet header to a next superheater header, a steam-gas heat exchanger is added, and a part of or all primary air from an outlet of an air preheater is heated by using steam. The invention further provides a mechanism used by the method. According to the method and the mechanism which are disclosed by the invention, the temperature of the primary air can be independently controlled, so that the requirement of drying capacity is satisfied, and the pulverizing system is safely and reliably operated; the temperature of the primary air is increased, so that the problem of serious imbalance of the primary air and secondary air can be preferably solved, and the proportion of the primary air to the secondary air is kept within a reasonable design range; and the interference of unreasonable distribution of the primary air and the secondary air on a combustion organization is reduced, so that the problems of unreasonable distribution of furnace box temperature, overtemperature of furnace outlet gas and ultrahigh exhaust gas temperature are solved at the same time.
Description
Technical field
The invention belongs to heating art, belong to boiler performance design field.It is related to a kind of raising boiler milling system once
The method of pathogenic wind-warm and mechanism.It is related to a kind of controller of coal mill of boiler, especially medium-speed pulverizer.
Background technology
The station boiler ature of coal of coal dust burning is just gradually deteriorated, and (moisture is big, 15- for the coal of high-moisture, particularly brown coal
60%) used more and more in station boiler, this proposes new requirement to the safety and economic operation of boiler.Coal moisture
After rising, in order to meet the needs of pulverized coal preparation system First air drying capacity increasing, medium-speed pulverizer pulverized coal preparation system can be taken
Measure is to improve pathogenic wind-warm of coal pulverizer inlet, or increases primary air flow.
In existing boiler technology, when ature of coal moisture increases, mainly to be met once by the way of increasing primary air flow
Wind drying capacity, that is, increase primary air ratio to improve drying capacity.But the effect of this method of operation adjustment is limited, sternly
The requirement of powder drying capacity processed cannot be met during weight, have influence on the ability of boiler on-load.For example with medium-speed pulverizer burning
The combustion system of higher moisture (less than 35%) brown coal, when using moisture and increasing to more than 38%, improves once in actual motion
Although wind rate drying capacity increases, but still will be unable to meet the requirement of First air drying capacity, and with primary air ratio
Increase, primary and secondary air ratio substantial deviation design conditions, highly impact the pneumatic condition furnace in burner hearth and its burner
Condition, cause retarded by combustion, after-flame variation, upper furnace water-cooling wall overtemperature, burner hearth coking tendency increase, Stream temperature degree reduce, then
A series of problems, such as steam temperature rise, exhaust gas temperature increase.
Content of the invention
The shortcoming of prior art in view of the above, the technical problem to be solved in the present invention is to provide a kind of raising boiler
The method of pathogenic wind-warm of pulverized coal preparation system and mechanism, a pathogenic wind-warm for solving burning high-moisture coal boiler milling system cannot
Meet the technical problem of drying capacity of pulverizer.
The invention solves the problems that first technical problem be to provide a kind of side improving pathogenic wind-warm of boiler milling system
Method, First air is delivered to coal pulverizer after being heated by air preheater, heats First air air further using boiler overheating steam,
Improve First air drying capacity, be connected on the pipeline of next stage superheater header in low temperature superheater outlet header, increase vapour-
Gas heat exchanger, the part or all of First air being exported from air preheater by steam heating, to improve the drying of First air
Ability.
Preferably, setting bypass air channel by an air channel, on bypass air channel, setting vapour-gas heat exchanger heats once
Wind.The program can air temperature of independent operation, meet the requirement of drying capacity.
Preferably, the steam that vapour-gas heat exchanger is used is derived from the outlet header of low temperature superheater, in vapour-gas heat exchanger
Interior, heat First air further, the steam after heat exchange leads back to the entrance header of next stage superheater.It is particularly well-suited to coal dust
The technique of boiler medium-speed pulverizer hydrogenous coal powder.
Preferably, the air inlet setting shutoff door in bypass air channel, adjust door, with bypass air channel bifurcated after to again with side
Setting shutoff door, regulation door in air channel of this section before the merging of transportation work style road.
Preferably, in the air outlet setting insulated door in bypass air channel.
Preferably, the primary air flow in bypass air channel and its degree of heat by air channel and bypass air channel shutoff door,
Adjust door and heat-insulated gate control.
The invention solves the problems that second technical problem be to provide a kind of side improving pathogenic wind-warm of boiler milling system
The mechanism that method is used, including vapour system and wind model system, the air inlet of described wind model system is provided with air
Preheater, described wind model system includes an air channel, and a described air channel is provided with bypass air channel, on described bypass channel
It is sequentially provided with shutoff door, adjusted door, vapour-gas heat exchanger and insulated door by the flow direction of wind, described shutoff door and regulation door are located at institute
State the air inlet in bypass air channel, described insulated door is located at the air outlet in described bypass air channel, corresponding with described bypass air channel
It is sequentially provided with shutoff door, adjusted door by the flow direction of wind in air channel, a described air channel is connected with coal pulverizer；Described steam system
System is located at boiler internal, including low temperature superheater and high temperature superheater, the venthole of described low temperature superheater and vapour-gas heat exchanger
Air intake connect, the venthole of described vapour-gas heat exchanger is connected with high temperature superheater.
Preferably, described low temperature superheater includes low temperature superheater entrance header, described low temperature superheater entrance header
Venthole is connected with the air intake of horizontal low temperature superheater, the venthole of described horizontal low temperature superheater and vertical low temperature overheater
Air intake connect, the venthole of described vertical low temperature overheater is connected with the air intake of vapour-gas heat exchanger.
Preferably, described high temperature superheater includes pendant superheater entrance header, pendant superheater, pendant superheater outlet
Header and high temperature superheater, the venthole of described vapour-gas heat exchanger is connected with described pendant superheater entrance header, described screen formula
In succession pendant superheater entrance header in superheater one end, the other end is ined succession pendant superheater outlet header, described pendant superheater
The venthole of outlet header is connected with high temperature superheater.
Preferably, on a described air channel, the position of neighbouring described coal pulverizer is provided with automatically-controlled door.
Compared with original technology, the present invention can be by an air channel and shutoff door, regulation door and the insulated door bypassing air channel
Control the degree of primary air flow and its heating in bypass air channel, pathogenic wind-warm of independent operation, meet the requirement of drying capacity, and not
Affect the security reliability that existing pulverized coal preparation system runs.By improving a pathogenic wind-warm, solve primary and secondary air ratio well serious
A difficult problem for imbalance is so that primary and secondary air ratio Fertilizer Test of Regression Design condition.Decrease primary and secondary air unreasonable distribution good to burning
So that fire box temperature distribution tends to be reasonable, furnace outlet gas temperature is normal, and exhaust gas temperature is effectively reduced for the interference of tissue.
The method of the present invention and mechanism are applied to all kinds of pulverized-coal fired boilers, are particularly suitable for Large Copacity, high parameter boiler system
The design of powder system and transformation.Reply causes First air drying capacity wretched insufficiency to lead to boiler performance big because of the high-moisture of coal
The situation that width declines.The performance that boiler can be made is realized rapidly safe efficient, and shows good dynamic spy in varying duty
Property.Therefore, the present invention is also the innovation of dynamic properties design in boiler performance design.
The method of the present invention and mechanism contribute to the restriction overcoming medium-speed pulverizer to grind hydrogenous coal, in preferably playing
Simple, the safe and reliable advantage of speed coal mill pulverized coal preparation system.
Brief description
Fig. 1 is a kind of scheme of installation of the method improving pathogenic wind-warm of boiler milling system.
Component label instructions
1. water-cooling wall
2. pendant superheater
30. pendant superheater entrance headers
31. pendant superheater outlet headers
4. high temperature superheater
5. high temperature reheater
6. vertical low temperature reheater
7. low-temperature reheater outlet header
8. vertical low temperature overheater
9. low temperature superheater outlet header
10. superheater connecting tube
11. vapour-gas heat exchangers
12. horizontal low-temperature reheaters
13. horizontal low temperature superheaters
14. low temperature superheater entrance headers
15. economizers
16. bypass air channels
17. low-temperature reheater entrance headers
18. flues
19. denitrification apparatus
20. air preheaters
21. secondary air ducts
220th, 221. regulation door
230th, 231. shutoff door
24. air channels
25. insulated doors
26. coal pulverizers
27. automatically-controlled doors
Specific embodiment
Hereinafter embodiments of the present invention are illustrated by particular specific embodiment, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure depicted in this specification institute accompanying drawings, ratio, size etc., all only in order to coordinate description to be taken off
The content shown, so that those skilled in the art understands and reads, is not limited to the enforceable qualificationss of the present invention, therefore
Do not have technical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting the present invention
Under the effect that can be generated by and the purpose that can reach, all should still fall and obtain, in disclosed technology contents, the model that can cover
In enclosing.Meanwhile, in this specification cited as " on ", D score, "left", "right", " middle " etc. term, be merely convenient to chat
That states understands, and is not used to limit the enforceable scope of the present invention, being altered or modified of its relativeness, changes skill in no essence
Hold in art, when being also considered as the enforceable category of the present invention.
According to Figure of description 1, low with certain calorific value of China in the present embodiment, as a example the higher brown coal of moisture, it is situated between
Continue a kind of arrangement of certain power plant's twin flue π type pulverized-coal fired boiler.Fig. 1 is boiler heating surface and vapour-gas heat exchanger is installed and illustrated
Sketch.Fig. 1 vapour-gas heat exchanger 11 arranges two, is separately mounted to the boiler left and right sides (in figure shows wherein side), left and right two
Side totally 7 medium-speed pulverizers 26, are all provided with automatically-controlled door 27 before every mill.Because each engineering respectively has its particularity, the tool shown in Fig. 1
Body installation site and pipe arrangement determine according to field condition, are not limited to this legend.
The present embodiment improves a pathogenic wind-warm with boiler and transform basis as, proposes the superheated steam using low temperature superheater outlet
The part or all of First air of heating air preheater outlet, and then improve a pathogenic wind-warm.
The mechanism that the method for the pathogenic wind-warm of boiler milling system that the present invention improves is used, including vapour system 100 He
Wind model system 200, the air inlet of described wind model system 200 is provided with air preheater 20, described wind model system
System 200 includes an air channel 24, and a described air channel 24 is provided with bypass channel 16, described bypass channel 16 is pressed the flow direction of wind
It is sequentially provided with shutoff door 230, adjusts door 220, vapour-gas heat exchanger 11 and insulated door 25, described insulated door 25 is near described bypass
The air outlet of passage 16, described shutoff door 230, adjust door 220 near described bypass channel 16 air inlet, with described bypass wind
It is sequentially provided with shutoff door 231 by the flow direction of wind in a corresponding air channel 24 of road and adjusts door 221, adjust door 220,221 and use
In the inlet adjusting First air, shutoff door 230,231 is used for blocking First air and passes through, a described air channel 24 and coal pulverizer 26
Connect.Described vapour system 100 is located at boiler internal, including low temperature superheater, high temperature superheater, the going out of described low temperature superheater
Steam ports is connected with the air intake of vapour-gas heat exchanger 11, and the venthole of described vapour-gas heat exchanger 11 is connected with high temperature superheater.
Preferably, described low temperature superheater includes low temperature superheater entrance header 14, described low temperature superheater entrance header
14 venthole is connected with the air intake of horizontal low temperature superheater 13, and the venthole of described horizontal low temperature superheater 13 is low with vertical
The air intake of warm superheater 8 connects, and the venthole of described vertical low temperature overheater 8 is connected with low temperature superheater outlet header 9, institute
The air intake stating low temperature superheater outlet header 9 with vapour-gas heat exchanger 11 is connected.
Preferably, described high temperature superheater includes pendant superheater entrance header 30, pendant superheater 2, pendant superheater
Outlet header 31 and high temperature superheater 4, the venthole of described vapour-gas heat exchanger 11 is with described pendant superheater entrance header 30 even
Connect, in succession pendant superheater entrance header 30 in described pendant superheater 2 one end, the other end is ined succession pendant superheater outlet header
31, the venthole of described pendant superheater outlet header 31 is connected with high temperature superheater 4.
Preferably, on a described air channel 24, the position of neighbouring described coal pulverizer 26 is provided with automatically-controlled door 27, controls for independent
Make the inlet of the First air of this coal pulverizer 26.
The present embodiment relates generally to two fluid flows：
Superheated steam flow process：
The water-cooling wall 1 of burner hearth be subject to thermogenetic steam through low temperature superheater entrance header 14, horizontal low temperature superheater 13,
Vertical low temperature overheater 8, low temperature superheater outlet header 9, then changed by the vapour-gas that superheater connecting tube 10 accesses arrangement outside stove
In hot device 11, for heating the First air of air preheater outlet to suitable temperature, the superheated steam after heat exchange guides to screen formula mistake
Hot device entrance header 30, pendant superheater 2, pendant superheater outlet header 31, high temperature superheater 4, then to steam output.
Steam after circulation returns to low-temperature reheater entrance header 17, horizontal low-temperature reheater 12, vertical low temperature reheater
6th, low-temperature reheater outlet header 7, high temperature reheater 5, then to steam output.
First air flow process：
The First air through an air channel 24 of air preheater 20 outlet, partially or completely through bypass air channel 16, passes through
Vapour-gas heat exchanger 11 is heated to suitable temperature, delivers in pulverized coal preparation system through automatically-controlled door 27 after the First air mixing after heating
Speed coal mill 26, it is achieved thereby that improving a pathogenic wind-warm and then improving the purpose of First air drying capacity.For independent operation one
Secondary pathogenic wind-warm, bypass air channel 16 in set regulation door 220, shutoff door 230, insulated door 25, set in an air channel regulation door 221,
Shutoff door 231 etc..It is equipped with automatically-controlled door 27 before each coal pulverizer, be beneficial to independently adjustable.
Air preheater 20 be arranged on denitrification apparatus 19 after flue 18 in, air preheater 20 is produced by boiler combustion
Flue gas after denitration.Economizer 15 is also set up in flue 18.
The air outlet of the secondary air duct 21 in the present invention is connected with boiler.
Improve a pathogenic wind-warm by being installed in addition with vapour-gas heat exchanger, the drying capacity of First air can be improved, it is to avoid existing powder system processed
System improves primary air ratio so that First air, secondary wind serious disproportion to increase drying capacity, leads to secondary air duct 21
Air quantity significantly reduces and affects burning in stove.
The technical scheme of above-described embodiment can pathogenic wind-warm of independent operation, meet the requirement of drying capacity, and do not affect existing
There is the security reliability that pulverized coal preparation system runs.By improving a pathogenic wind-warm, solve primary and secondary air serious disproportion well
A difficult problem is so that primary and secondary air ratio Fertilizer Test of Regression Design condition.Decrease primary and secondary air unreasonable distribution to burning good organization
So that fire box temperature distribution tends to be reasonable, furnace outlet gas temperature is normal, solves a difficult problem for exhaust gas temperature superelevation simultaneously for interference.
In sum, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment only principle of the illustrative present invention and its effect, not for the restriction present invention.Any ripe
The personage knowing this technology all can carry out modifications and changes without prejudice under the spirit and the scope of the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
All equivalent modifications becoming or change, must be covered by the claim of the present invention.
Claims (9)
1. a kind of method improving pathogenic wind-warm of boiler milling system, First air is delivered to coal-grinding after being heated by air preheater
Machine, it is characterised in that heating First air air further using boiler overheating steam, improves First air drying capacity, in low temperature
Super-heater exit case is connected on the pipeline of next stage superheater header, increases vapour-gas heat exchanger, is derived from by steam heating
The part or all of First air of air preheater outlet, to improve the drying capacity of First air.
2. the method improving pathogenic wind-warm of boiler milling system according to claim 1 is it is characterised in that in an air channel
Other setting bypass air channel, setting vapour-gas heat exchanger heating First air on bypass air channel.
3. the method improving pathogenic wind-warm of boiler milling system according to claim 2 is it is characterised in that vapour-gas heat exchange
The steam that device is used is derived from the outlet header of low temperature superheater, in vapour-gas heat exchanger, heats First air, heat exchange further
Steam afterwards leads back to the entrance header of next stage superheater.
4. the method improving pathogenic wind-warm of boiler milling system according to claim 2 is it is characterised in that bypassing air channel
Air inlet setting shutoff door, adjust door, with after bypass air channel bifurcated to again with bypass this section before air channel merges once
Setting shutoff door, regulation door in air channel.
5. the method improving pathogenic wind-warm of boiler milling system according to claim 4 is it is characterised in that bypassing air channel
Air outlet setting insulated door.
6. the method according to the arbitrary described raising pathogenic wind-warm of boiler milling system of claim 1-5 is it is characterised in that bypass
In air channel, the degree of primary air flow and its heating is by an air channel and shutoff door, regulation door and the heat-insulated gate control bypassing air channel.
7. the machine that a kind of method of the raising pathogenic wind-warm of boiler milling system any one of claim 1-6 is used
Structure it is characterised in that including wind model system (200) and vapour system (100), the entering of described wind model system (200)
It is provided with air preheater (20), described wind model system (200) includes an air channel (24), a described air channel at air port
(24) it is provided with bypass air channel (16), described bypass air channel (16) is sequentially provided with shutoff door (230), is adjusted door by the flow direction of wind
(220), vapour-gas heat exchanger (11) and insulated door (25), described shutoff door (230) and regulation door (220) are located at described bypass wind
The air inlet in road (16), described insulated door (25) be located at described bypass air channel (16) air outlet, a described air channel (24) with
Coal pulverizer (26) connects, and a described air channel (24) is provided with shutoff door (231) and adjusts door (221)；Described vapour system
(100) it is located at boiler internal, including low temperature superheater and high temperature superheater, the venthole of described low temperature superheater and vapour-gas change
The air intake of hot device (11) connects, and the venthole of described vapour-gas heat exchanger (11) is connected with high temperature superheater.
8. the mechanism that the method improving pathogenic wind-warm of boiler milling system according to claim 7 is used, its feature exists
In,
It is overheated that described low temperature superheater includes low temperature superheater entrance header (14), horizontal low temperature superheater (13), vertical low temperature
Device (8) and low temperature superheater outlet header (9), the venthole of described low temperature superheater entrance header (14) and horizontal cryogenic overheating
Air intake connection, the venthole of described horizontal low temperature superheater (13) and the air intake of vertical low temperature overheater (8) of device (13)
Connect, the venthole of described vertical low temperature overheater (8) is connected with low temperature superheater outlet header (9), described low temperature superheater
Outlet header (9) is connected with the air intake of vapour-gas heat exchanger (11).
9. the mechanism that the method improving pathogenic wind-warm of boiler milling system according to claim 8 is used, its feature exists
In described high temperature superheater includes pendant superheater entrance header (30), pendant superheater (2), pendant superheater outlet header
(31) and high temperature superheater (4), the venthole of described vapour-gas heat exchanger (11) is with described pendant superheater entrance header (30) even
Connect, in succession pendant superheater entrance header (30) in described pendant superheater (2) one end, the other end is ined succession pendant superheater outlet collection
Case (31), the venthole of described pendant superheater outlet header (31) is connected with the air intake of high temperature superheater (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047497.8A CN106402915A (en) | 2016-11-22 | 2016-11-22 | Method and mechanism for increasing temperature of primary air of boiler pulverizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611047497.8A CN106402915A (en) | 2016-11-22 | 2016-11-22 | Method and mechanism for increasing temperature of primary air of boiler pulverizing system |
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| Publication Number | Publication Date |
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| CN106402915A true CN106402915A (en) | 2017-02-15 |
Family
ID=58082296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611047497.8A Pending CN106402915A (en) | 2016-11-22 | 2016-11-22 | Method and mechanism for increasing temperature of primary air of boiler pulverizing system |
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| CN (1) | CN106402915A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110914594A (en) * | 2017-07-27 | 2020-03-24 | 住友重工福威能源有限公司 | Fluidized bed boiler plant and method for preheating combustion gas in a fluidized bed boiler plant |
| CN112944385A (en) * | 2021-04-09 | 2021-06-11 | 西安热工研究院有限公司 | Hot primary air heating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6414517A (en) * | 1987-07-03 | 1989-01-18 | Gadelius Kk | Recovery of waste heat of exhaust gas |
| CN204554865U (en) * | 2015-03-24 | 2015-08-12 | 东方电气集团东方锅炉股份有限公司 | A kind of system improving boiler using brown coal pulverized coal preparation system drying capacity |
| CN105485707A (en) * | 2015-12-16 | 2016-04-13 | 郝江平 | Powder manufacturing and air adjusting system utilizing waste heat and powder manufacturing and air adjusting method |
| CN105737129A (en) * | 2016-04-13 | 2016-07-06 | 华北电力大学 | Comprehensive waste heat utilization system for deep optimization of primary air preheating process |
-
2016
- 2016-11-22 CN CN201611047497.8A patent/CN106402915A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6414517A (en) * | 1987-07-03 | 1989-01-18 | Gadelius Kk | Recovery of waste heat of exhaust gas |
| CN204554865U (en) * | 2015-03-24 | 2015-08-12 | 东方电气集团东方锅炉股份有限公司 | A kind of system improving boiler using brown coal pulverized coal preparation system drying capacity |
| CN105485707A (en) * | 2015-12-16 | 2016-04-13 | 郝江平 | Powder manufacturing and air adjusting system utilizing waste heat and powder manufacturing and air adjusting method |
| CN105737129A (en) * | 2016-04-13 | 2016-07-06 | 华北电力大学 | Comprehensive waste heat utilization system for deep optimization of primary air preheating process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110914594A (en) * | 2017-07-27 | 2020-03-24 | 住友重工福威能源有限公司 | Fluidized bed boiler plant and method for preheating combustion gas in a fluidized bed boiler plant |
| US11079108B2 (en) | 2017-07-27 | 2021-08-03 | Sumitomo SHI FW Energia Oy | Fluidized bed boiler plant and a method of preheating combustion gas in a fluidized bed boiler plant |
| CN110914594B (en) * | 2017-07-27 | 2021-09-10 | 住友重机械福惠能源有限公司 | Fluidized bed boiler plant and method for preheating combustion gas in a fluidized bed boiler plant |
| CN112944385A (en) * | 2021-04-09 | 2021-06-11 | 西安热工研究院有限公司 | Hot primary air heating system |
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Application publication date: 20170215 |
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