CN108253401A - Heat recovery steam produces boiler circuit - Google Patents
Heat recovery steam produces boiler circuit Download PDFInfo
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- CN108253401A CN108253401A CN201810048943.XA CN201810048943A CN108253401A CN 108253401 A CN108253401 A CN 108253401A CN 201810048943 A CN201810048943 A CN 201810048943A CN 108253401 A CN108253401 A CN 108253401A
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- economizer
- water
- boiler
- heat recovery
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
- F22G5/123—Water injection apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
- F22G7/12—Steam superheaters characterised by location, arrangement, or disposition in flues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to heat recovery steams to produce boiler circuit, has burning boiler, to water unit and steam production unit.Include raw water softening desalination processing unit and deaerating plant to water unit, steam production unit includes economizer, water-cooling wall and superheater.Economizer includes higher level's economizer, intermediate economizer and subordinate's economizer, water-cooling wall is arranged on the inboard wall of burner hearth of burning boiler, superheater includes sequentially connected low temperature superheater, attemperator and high temperature superheater, subordinate's economizer is connect with deaerating plant, higher level's economizer is connect with water-cooling wall, and water-cooling wall is connect with low temperature superheater.The present invention to feedwater to water unit by carrying out softening desalination processing, it can avoid corroding, also, the present invention can enhance the contact area between flue gas and feedwater by setting three-level economizer, improve flue gas heat exchange ability, as a result, efficiently steam production cost is reduced using fume afterheat resource, be conducive to flue gas cool-down simultaneously, there is environment protecting.
Description
Technical field
The present invention relates to boiler combustion system fields, and boiler circuit is produced more particularly, to a kind of heat recovery steam.
Background technology
Use of the boiler in China is very universal, and China's about Industrial Boiler is ten thousand about more than 50 at present, separate unit boiler
Average size is small, and boiler overall energy consumption is horizontal high, and energy-saving and emission-reduction management level is low, and energy waste is serious.
Wherein, for conventional heating boiler, with a large amount of high-temperature flue gas, and the exhaust gas temperature of most of boilers is 300
DEG C or more, these heats without using being directly discharged in air, not only to fume afterheat resource in itself for be a kind of waste,
Also, environmental thermal pollution can be caused during temperature raising near smoke outlet.
Invention content
The present invention is to propose in view of the above problems, and its purpose is to provide a kind of heat recovery steam production carbonated drink systems
System, can reduce flue gas exit temperature, and residual heat from boiler fume resource is recycled.
The following technical scheme is adopted to achieve the purpose of the present invention.
The invention of technical solution 1 produces boiler circuit for a kind of heat recovery steam, there is burning boiler, to water unit and
Steam production unit.
It is described to include sequentially connected raw water softening desalination processing unit and deaerating plant, the steam production to water unit
Unit includes sequentially connected economizer, water-cooling wall and superheater.
The economizer include be arranged in the tail flue gas road of the burning boiler and it is from top to bottom sequentially connected on
Grade economizer, intermediate economizer and subordinate's economizer.
The water-cooling wall is arranged on the inboard wall of burner hearth of the burning boiler.
The superheater includes sequentially connected low temperature superheater, attemperator and high temperature superheater, the low temperature superheater
It is arranged in the hori-zontal flue gas road of the burning boiler, the high temperature superheater is arranged on the furnace outlet of the burning boiler
Place.
The water inlet of subordinate's economizer is connect by high-pressure hydraulic pump with the water outlet of the deaerating plant, the higher level
The water outlet of economizer is connect by the first drum with the water inlet of the water-cooling wall, and the water outlet of the water-cooling wall passes through second
Drum is connect with the water inlet of the low temperature superheater.
In addition, the heat recovery steam production boiler circuit of technical solution 2, gives birth in the heat recovery steam of technical solution 1
In water system of steaming, further include lag cooler and condensation water tank, the water outlet of the raw water softening desalination processing unit with it is described cold
The water inlet connection of slag machine, the water outlet of the lag cooler are connect with the water inlet of the condensation water tank, the condensation water tank
Water outlet is connect with the water inlet of the deaerating plant.
In addition, the heat recovery steam production boiler circuit of technical solution 3, gives birth in the heat recovery steam of technical solution 1
In water system of steaming, the attemperator is spray attemperator.
In addition, the heat recovery steam production boiler circuit of technical solution 4, gives birth in the heat recovery steam of technical solution 1
In water system of steaming, the water-cooling wall is fin panel casing.
In addition, the heat recovery steam production boiler circuit of technical solution 5, gives birth in the heat recovery steam of technical solution 1
In water system of steaming, loop branch pipe is provided between the water inlet of first drum and subordinate's economizer.
In addition, the heat recovery steam production boiler circuit of technical solution 6, gives birth in the heat recovery steam of technical solution 2
In water system of steaming, having heaters is set between the water outlet of the condensation water tank and the water inlet of the deaerating plant.
In addition, the heat recovery steam production boiler circuit of technical solution 7, gives birth in the heat recovery steam of technical solution 1
In water system of steaming, the deaerating plant is membrane deaerator.
In addition, the heat recovery steam production boiler circuit of technical solution 8, gives birth in the heat recovery steam of technical solution 1
In water system of steaming, higher level's economizer, the intermediate economizer and subordinate's economizer are respectively Membrane Economizer.
In addition, the heat recovery steam production boiler circuit of technical solution 9, gives birth in the heat recovery steam of technical solution 1
In water system of steaming, higher level's economizer, the intermediate economizer and subordinate's economizer are respectively with staggered arrangement
In the horizontal tail flue gas road for being arranged in the burning boiler of mode.
In addition, the heat recovery steam production boiler circuit of technical solution 10, gives birth in the heat recovery steam of technical solution 9
In water system of steaming, higher level's economizer, the intermediate economizer and subordinate's economizer it is respective from top to bottom
Preceding two layers of straight tube on be arranged with wearing bush respectively, and save in higher level's economizer, the intermediate economizer and the subordinate
The respective coiled pipe elbow of coal device is respectively arranged with abrasionproof backplate.
Compared with prior art, the present invention has the advantages that.
Use of the boiler in China is very universal, and China's about Industrial Boiler is ten thousand about more than 50 at present, separate unit boiler
Average size is small, and boiler overall energy consumption is horizontal high, and energy-saving and emission-reduction management level is low, and energy waste is serious.
Wherein, for conventional heating boiler, with a large amount of high-temperature flue gas, and the exhaust gas temperature of most of boilers is 300
DEG C or more, these heats without using being directly discharged in air, not only to fume afterheat resource in itself for be a kind of waste,
Also, environmental thermal pollution can be caused during temperature raising near smoke outlet.
In contrast, the present invention provides a kind of heat recovery steam production boiler circuit, with burning boiler, give
Water unit and steam production unit.
Wherein, include sequentially connected raw water softening desalination processing unit and deaerating plant to water unit.Steam production is single
Member includes sequentially connected economizer, water-cooling wall and superheater.Economizer includes being arranged in the tail flue gas road of burning boiler
And from top to bottom sequentially connected higher level's economizer, intermediate economizer and subordinate's economizer.Water-cooling wall is arranged on burning boiler
On inboard wall of burner hearth.Superheater includes sequentially connected low temperature superheater, attemperator and high temperature superheater, and low temperature superheater is arranged on
In the hori-zontal flue gas road of burning boiler, high temperature superheater is arranged at the furnace outlet of burning boiler.Subordinate's economizer enters water
It mouthful is connected by the water outlet of high-pressure hydraulic pump and deaerating plant, the water outlet of higher level's economizer passes through the first drum and water-cooling wall
Water inlet connects, and the water outlet of water-cooling wall is connected by the water inlet of the second drum and low temperature superheater.
In above-mentioned heat recovery steam production boiler circuit, first by the way that the raw water softening desalination of water unit is given to handle
Device carries out softening desalination to raw water, so as to which boiler feedwater be made to have smaller hardness and basicity.
Then, it by the way that the deaerating plant of water unit is given to remove or reduce the oxygen content in boiler feedwater, avoids in feedwater
The water supply system and component of oxygen corrosion boiler form corrosive substance iron oxide, enter in boiler, deposit or be attached to boiler
On tube wall and heating surface, indissoluble being formed and the undesirable iron dirt that conducts heat, inner wall of the pipe appearance point being caused to cheat, resistance coefficient is increased existing
As avoiding corrosive pipeline that pipeline explosion accident seriously occurs.
Further, the feedwater after deoxygenation enters steam production unit, first subordinate's economizer, intermediate economizer and
It is progressively heated in the process in higher level's economizer as saturated water, water-cooling wall is then flowed by the first drum and is heated to be in water-cooling wall
Saturated vapor, and then, saturated vapor are entered by the second drum in low temperature superheater, are heated to be in low temperature superheater
Cryogenic overheating steam, further, the Low Temperature Steam in low temperature superheater are entered through attemperator in high temperature superheater, are heated
For high temperature super heated steam.
High temperature super heated steam is passed into main steam pipe, you can pass through temperature-decreased pressure reducer according to the different demands of user
Carry out vapor transmission to each user after desuperheat, decompression or, desuperheat is sent to heating system again after desuperheat pressurizes
It is used.
In above structure, economizer is with subordinate's economizer, intermediate economizer and higher level's economizer, flow of flue gas direction
From top to bottom, the flow direction of boiler feedwater is from bottom to up, boiler feedwater sequentially enter subordinate's economizer, intermediate economizer and
Higher level's economizer absorbs high-temperature flue gas heat in economizer, so as to reduce flue gas exhaust gas temperature, while boiler feedwater is carried out
Heating, as a result, compared with only an economizer is set, the contact area bigger between flue gas, to the profit of fume afterheat
With rate higher, so as to which fume afterheat resource can be efficiently used.
In addition, in above structure, the setting of the first drum and the second drum can be to the pressure of steam production boiler circuit
It is adjusted, steam-water separation is carried out to the water heated, in addition, observation panel can be set on drum, conveniently further looks at water
Position；The steam that the setting of attemperator then can strictly control low temperature superheater to enter in high temperature superheater enters temperature, so as to protect
High temperature superheater is protected, the tube wall temperature of high temperature superheater is made to be no more than the operating temperature allowed, for example, stringent according to actual demand
Temperature range is between 420 DEG C -435 DEG C, to reach safe design requirement.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram for the specific embodiment for representing heat recovery steam production boiler circuit provided by the invention.
Specific embodiment
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Below according to the overall structure of heat recovery steam provided by the invention production boiler circuit, embodiment is carried out
Explanation.
The structure diagram of the specific embodiment of heat recovery steam production boiler circuit provided by the invention.
As shown in Figure 1, the heat recovery steam produces boiler circuit, there is burning boiler, produced to water unit and steam
Unit.
Membrane deaerator of the water unit including sequentially connected raw water softening desalination processing unit and as deaerating plant is given,
Steam production unit includes sequentially connected economizer, fin panel casing and superheater.
Economizer include be arranged in the tail flue gas road of burning boiler and from top to bottom sequentially connected higher level's economizer,
Intermediate economizer and subordinate's economizer, and higher level's economizer, intermediate economizer and subordinate's economizer are respectively Membrane Economizer.
The horizontal tail for being arranged in burning boiler of mode that higher level's economizer, intermediate economizer and subordinate's economizer are arranged respectively with staggered
In portion's gas flue.On respective top-down preceding two layers of straight tube of higher level's economizer, intermediate economizer and subordinate's economizer
It is arranged with wearing bush respectively, and in the respective coiled pipe elbow punishment of higher level's economizer, intermediate economizer and subordinate's economizer
It is not provided with abrasionproof backplate.
Fin panel casing is arranged on the inboard wall of burner hearth of burning boiler.
Superheater includes sequentially connected low temperature superheater, spray attemperator and high temperature superheater, and low temperature superheater is set
It puts in the hori-zontal flue gas road of burning boiler, high temperature superheater is arranged at the furnace outlet of burning boiler.
The water inlet of subordinate's economizer is connected by the water outlet of high-pressure hydraulic pump and deaerating plant, the water outlet of higher level's economizer
It mouthful is connected by the water inlet of the first drum and water-cooling wall, the water outlet of water-cooling wall is entered by the second drum and low temperature superheater
The mouth of a river connects.
Further, heat recovery steam production boiler circuit further includes lag cooler and condensation water tank, and raw water softening is de-
The water outlet of salt treatment device and the water inlet of lag cooler connect, and the water outlet of lag cooler and the water inlet of condensation water tank connect,
The water outlet of condensation water tank and the water inlet of deaerating plant connect.
In addition, it is provided with loop branch pipe between the water inlet of the first drum and subordinate's economizer.
In addition, having heaters is set between the water outlet of condensation water tank and the water inlet of deaerating plant.
The structure of the specific embodiment of heat recovery steam provided by the invention production boiler circuit is said above
It is bright, illustrate its operational process below.
In above-mentioned heat recovery steam production boiler circuit, first by the way that the raw water softening desalination of water unit is given to handle
Device carries out softening desalination to raw water, so as to which boiler feedwater be made to have smaller hardness and basicity.
Then, it by the way that the deaerating plant of water unit is given to remove or reduce the oxygen content in boiler feedwater, avoids in feedwater
The water supply system and component of oxygen corrosion boiler form corrosive substance iron oxide, enter in boiler, deposit or be attached to boiler
On tube wall and heating surface, indissoluble being formed and the undesirable iron dirt that conducts heat, inner wall of the pipe appearance point being caused to cheat, resistance coefficient is increased existing
As avoiding corrosive pipeline that pipeline explosion accident seriously occurs.
Further, the feedwater after deoxygenation enters steam production unit, first subordinate's economizer, intermediate economizer and
It is progressively heated in the process in higher level's economizer as saturated water, water-cooling wall is then flowed by the first drum and is heated to be in water-cooling wall
Saturated vapor, and then, saturated vapor are entered by the second drum in low temperature superheater, are heated to be in low temperature superheater
Cryogenic overheating steam, further, the Low Temperature Steam in low temperature superheater are entered through attemperator in high temperature superheater, are heated
For high temperature super heated steam.
High temperature super heated steam is passed into main steam pipe, you can pass through temperature-decreased pressure reducer according to the different demands of user
Carry out vapor transmission to each user after desuperheat, decompression or, desuperheat is sent to heating system again after desuperheat pressurizes
It is used.
In above structure, economizer is with subordinate's economizer, intermediate economizer and higher level's economizer, flow of flue gas direction
From top to bottom, the flow direction of boiler feedwater is from bottom to up, boiler feedwater sequentially enter subordinate's economizer, intermediate economizer and
Higher level's economizer absorbs high-temperature flue gas heat in economizer, so as to reduce flue gas exhaust gas temperature, while boiler feedwater is carried out
Heating, as a result, compared with only an economizer is set, the contact area bigger between flue gas, to the profit of fume afterheat
With rate higher, so as to which fume afterheat resource can be efficiently used.
In addition, in above structure, the setting of the first drum and the second drum can be to the pressure of steam production boiler circuit
It is adjusted, steam-water separation is carried out to the water heated, in addition, observation panel can be set on drum, conveniently further looks at water
Position；The steam that the setting of attemperator then can strictly control low temperature superheater to enter in high temperature superheater enters temperature, so as to protect
High temperature superheater is protected, the tube wall temperature of high temperature superheater is made to be no more than the operating temperature allowed, for example, stringent according to actual demand
Temperature range is between 420 DEG C -435 DEG C, to reach safe design requirement.
In addition, in above-mentioned specific embodiment, heat recovery steam production boiler circuit is set to further include cold slag
Machine and condensation water tank can carry out the raw water after softened desalting processing by the heat of the hot stove slag in lag cooler low as a result,
Preheating, so as to be conducive to the efficient progress of oxygen removal process.
In addition, during burning boiler starts, since the cycle of its steam-water pipe is set up not yet, i.e. boiler
Feedwater stays cool, and the water in subordinate's economizer above-mentioned at this time, intermediate economizer and higher level's economizer, which is in, not to be flowed
State, with the reinforcement of burning boiler ignition temperature, flue-gas temperature improves, and subordinate's economizer, intermediate economizer and higher level save
Water in coal device is easy to vaporize, and makes subordinate's economizer, intermediate economizer and higher level's economizer locally in overtemperature state.
In this regard, in above-mentioned specific embodiment, set and follow between the water inlet of the first drum and subordinate's economizer
Ring branch pipe as recirculation conduit, can make the water in economizer be in flow regime, avoid its rapid vaporization as a result,.
In addition, in above-mentioned specific embodiment, between the water outlet of condensation water tank and the water inlet of deaerating plant
Having heaters is set, the temperature for entering the water in deaerating plant can be controlled by the heater as a result, so as to make oxygen removal process height
Efficiency stablizes progress.
In addition, in above-mentioned specific embodiment, higher level's economizer, intermediate economizer and subordinate's economizer are respectively with mistake
In the horizontal tail flue gas road for being arranged in burning boiler of mode of column arrangement.
Through this structure, the contact area between the pipeline and flue gas of economizers at different levels can be increased, so as to flue gas
Waste heat is made full use of.
In addition, in above-mentioned specific embodiment, in the respective of higher level's economizer, intermediate economizer and subordinate's economizer
Top-down preceding two layers of straight tube on be arranged with wearing bush respectively, and coal is saved in higher level's economizer, intermediate economizer and subordinate
The respective coiled pipe elbow of device is respectively arranged with abrasionproof backplate.
It can avoid as a result, in dust and the economizer contact processes at different levels in flue gas, it is straight to two layers before economizers at different levels
Pipe causes impact wear, meanwhile, it avoids rubbing between the respective coiled pipe elbow of economizers at different levels and exhaust gases passes inner wall
It collides and damages.
In addition, in above-mentioned specific embodiment, the concrete structure of the present invention is illustrated, but be not limited to
This.
For example, in above-mentioned specific embodiment, heat recovery steam production boiler circuit is set to further include cold slag
Machine and condensation water tank, but not limited to this, and heat recovery steam production boiler circuit can also be made not include above-mentioned cold slag
Machine and condensation water tank are equally reached fume afterheat utilizing status, still, according to the structure in specific embodiment, setting
Heat recovery steam production boiler circuit further includes lag cooler and condensation water tank, can pass through the hot stove slag in lag cooler as a result,
Heat the raw water after softened desalting processing is preheated, so as to, be conducive to the efficient progress of oxygen removal process.
In addition, in above-mentioned specific embodiment, set and follow between the water inlet of the first drum and subordinate's economizer
Ring branch pipe, but not limited to this, can not also set the loop branch pipe, is equally reached fume afterheat utilizing status, still,
According to the structure in specific embodiment, above-mentioned loop branch pipe is set, using the loop branch pipe as recirculation conduit, by
This, can make the water in economizer be in flow regime, avoid burning boiler start during water rapid vaporization in economizer.
In addition, in above-mentioned specific embodiment, between the water outlet of condensation water tank and the water inlet of deaerating plant
Having heaters is set, and but not limited to this, can not also set the heater, is equally reached above-mentioned fume afterheat and utilizes
Effect, still, according to the structure in specific embodiment, sets above-mentioned heater, can be controlled as a result, by the heater into
Enter the temperature of the water in deaerating plant, carried out so as to make oxygen removal process high efficiency, stablize.
In addition, in above-mentioned specific embodiment, higher level's economizer, intermediate economizer and subordinate's economizer are respectively with mistake
In the horizontal tail flue gas road for being arranged in burning boiler of mode of column arrangement.But not limited to this, above-mentioned grade economizer, middle rank
Economizer and subordinate's economizer can not also mutually arrange in stagger arrangement, be equally reached above-mentioned fume afterheat utilizing status, but
It is, according to the structure in specific embodiment, higher level's economizer, intermediate economizer and subordinate's economizer to be made to be arranged respectively with staggered
In the horizontal tail flue gas road for being arranged in burning boiler of the mode of cloth, can increase as a result, the pipelines of economizers at different levels and flue gas it
Between contact area, so as to being made full use of to fume afterheat.
In addition, in above-mentioned specific embodiment, in the respective of higher level's economizer, intermediate economizer and subordinate's economizer
Top-down preceding two layers of straight tube on be arranged with wearing bush respectively, and coal is saved in higher level's economizer, intermediate economizer and subordinate
The respective coiled pipe elbow of device is respectively arranged with abrasionproof backplate.
But not limited to this, can not also set above-mentioned wearing bush and abrasionproof backplate, is equally reached above-mentioned cigarette
Gas exhaust heat utilization effect still, according to the structure in specific embodiment, sets above-mentioned wearing bush and abrasionproof backplate, can keep away
Exempt from the dust in flue gas in economizer contact processes at different levels, causing impact wear to two layers of straight tube before economizers at different levels, together
When, it avoids frictional impact between the respective coiled pipe elbow of economizers at different levels and exhaust gases passes inner wall and damages.
In addition, in above-mentioned specific embodiment, spray attemperator can be replaced the attemperator of other forms, example
Such as, spray attemperator is replaced with into non-contact attemperator that water and vapor is not directly contacted with etc., be equally reached above-mentioned
Temperature control effect, still, non-contact attemperator is complicated, fragile, and adjust it is dumb, be set to water jet desuperheat
Device then has many advantages, such as that simple in structure, adjusting is sensitive, time lag is small, the steam temperature amplitude of accommodation is big.
In addition, in above-mentioned specific embodiment, setting water-cooling wall is fin panel casing, and but not limited to this, water cooling
Wall can also be bare-tube wall or the water-cooling wall of other forms, be equally reached above-mentioned flue gas utilization effect, still, will
Water-cooling wall is set as fin panel casing, and in-site installation is more convenient, and light boiler setting can be used so as to save capital construction cost, together
When, burner hearth inleakage can be reduced, improves efficiency of combustion, and it has more rational water circulation pipeline.
In addition, in above-mentioned specific embodiment, setting deaerating plant is membrane deaerator, and but not limited to this, removes
Oxygen device can also be water drenching disc type oxygen-eliminating device or spray-filling type deaerator etc., as long as can reach above-mentioned deaerating effect i.e.
It can.
In addition, in above-mentioned specific embodiment, higher level's economizer, intermediate economizer and subordinate's economizer are respectively film
Formula economizer, but not limited to this, and Bare Tube Economizer can also be respectively adopted in economizers at different levels, is equally reached above-mentioned
Fume afterheat utilizes function, and still, it is respectively Membrane Economizer to set economizers at different levels, compared with Bare Tube Economizer, is had
Heating surface area can be increased, reduce the advantageous effects such as dust stratification and abrasion.
In addition, the heat recovery steam production boiler circuit of the present invention, can be combined by the various structures of the above embodiment
It forms, can equally play above-mentioned effect.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of heat recovery steam produces boiler circuit, which is characterized in that has burning boiler, is produced to water unit and steam
Unit,
It is described to include sequentially connected raw water softening desalination processing unit and deaerating plant, the steam production unit to water unit
Including sequentially connected economizer, water-cooling wall and superheater,
The economizer includes being arranged in the tail flue gas road of the burning boiler and from top to bottom sequentially connected higher level saves
Coal device, intermediate economizer and subordinate's economizer,
The water-cooling wall is arranged on the inboard wall of burner hearth of the burning boiler,
The superheater includes sequentially connected low temperature superheater, attemperator and high temperature superheater, the low temperature superheater setting
In the hori-zontal flue gas road of the burning boiler, the high temperature superheater is arranged at the furnace outlet of the burning boiler,
The water inlet of subordinate's economizer is connect by high-pressure hydraulic pump with the water outlet of the deaerating plant, and the higher level saves coal
The water outlet of device is connect by the first drum with the water inlet of the water-cooling wall, and the water outlet of the water-cooling wall passes through the second drum
It is connect with the water inlet of the low temperature superheater.
2. boiler circuit is produced according to the heat recovery steam described in claim 1, which is characterized in that further include lag cooler and
Condensation water tank,
The water outlet of the raw water softening desalination processing unit is connect with the water inlet of the lag cooler, the water outlet of the lag cooler
Mouth is connect with the water inlet of the condensation water tank, and the water outlet of the condensation water tank is connect with the water inlet of the deaerating plant.
3. boiler circuit is produced according to the heat recovery steam described in claim 1, which is characterized in that the attemperator is spray
Ability of swimming attemperator.
4. boiler circuit is produced according to the heat recovery steam described in claim 1, which is characterized in that the water-cooling wall is film
Formula water-cooling wall.
5. boiler circuit is produced according to the heat recovery steam described in claim 1, which is characterized in that in first drum
Loop branch pipe is provided between the water inlet of subordinate's economizer.
6. boiler circuit is produced according to the heat recovery steam described in claim 2, which is characterized in that in the condensation water tank
Water outlet and the deaerating plant water inlet between having heaters is set.
7. boiler circuit is produced according to the heat recovery steam described in claim 1, which is characterized in that the deaerating plant is
Membrane deaerator.
8. boiler circuit is produced according to the heat recovery steam described in claim 1, which is characterized in that the higher level saves coal
Device, the intermediate economizer and subordinate's economizer are respectively Membrane Economizer.
9. boiler circuit is produced according to the heat recovery steam described in claim 1, which is characterized in that the higher level saves coal
Device, the intermediate economizer and subordinate's economizer are arranged in the burning boiler so that the mode of staggered arrangement is horizontal respectively
Tail flue gas road in.
10. boiler circuit is produced according to the heat recovery steam described in claim 9, which is characterized in that save in the higher level
It is arranged with respectively on respective top-down preceding two layers of straight tube of coal device, the intermediate economizer and subordinate's economizer anti-
Grinding set, and in the respective coiled pipe elbow punishment of higher level's economizer, the intermediate economizer and subordinate's economizer
It is not provided with abrasionproof backplate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048943.XA CN108253401A (en) | 2018-01-18 | 2018-01-18 | Heat recovery steam produces boiler circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048943.XA CN108253401A (en) | 2018-01-18 | 2018-01-18 | Heat recovery steam produces boiler circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108253401A true CN108253401A (en) | 2018-07-06 |
Family
ID=62741182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810048943.XA Pending CN108253401A (en) | 2018-01-18 | 2018-01-18 | Heat recovery steam produces boiler circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108253401A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595538A (en) * | 2018-12-27 | 2019-04-09 | 苏州海陆重工股份有限公司 | Exhaust-heat boiler with self-made condensed water spraying temperature reducing device |
| CN111498807A (en) * | 2020-04-14 | 2020-08-07 | 四川建筑职业技术学院 | HCl synthesis furnace for producing steam, production system and production method |
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| CN201706510U (en) * | 2009-11-26 | 2011-01-12 | 创冠环保(中国)有限公司 | Waste incineration boiler afterheat recovering device |
| CN102635844A (en) * | 2012-05-14 | 2012-08-15 | 中江能源回收(上海)有限公司 | Boiler system using waste heat of flue gas of rotary hearth furnace |
| CN103343955A (en) * | 2013-07-25 | 2013-10-09 | 南京凯盛开能环保能源有限公司 | Comprehensive recycling boiler device of extra coal gas and saturated steam of steel plant |
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| CN101021308A (en) * | 2007-03-26 | 2007-08-22 | 上海喆能电力工程技术有限公司 | Waste heat power generating system for dry cement production line |
| CN201706510U (en) * | 2009-11-26 | 2011-01-12 | 创冠环保(中国)有限公司 | Waste incineration boiler afterheat recovering device |
| CN102635844A (en) * | 2012-05-14 | 2012-08-15 | 中江能源回收(上海)有限公司 | Boiler system using waste heat of flue gas of rotary hearth furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109595538A (en) * | 2018-12-27 | 2019-04-09 | 苏州海陆重工股份有限公司 | Exhaust-heat boiler with self-made condensed water spraying temperature reducing device |
| CN109595538B (en) * | 2018-12-27 | 2024-03-19 | 苏州海陆重工股份有限公司 | Waste heat boiler with self-made condensed water spray attemperator |
| CN111498807A (en) * | 2020-04-14 | 2020-08-07 | 四川建筑职业技术学院 | HCl synthesis furnace for producing steam, production system and production method |
| CN111498807B (en) * | 2020-04-14 | 2024-04-16 | 四川建筑职业技术学院 | HCl synthesis furnace for producing steam, production system and production method |
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